[1] Which among the following is software application commonly used to prepare a presentation/slide show?
A.
Adobe
B.
Power Point
C.
Outlook Express
D.
Internet Explorer
Ans:
Power Point
Explanation :
PowerPoint is used to make presentations/slide shows.
[2] A CD player can access data/information using which method?
A.
Sequential access
B.
Random access
C.
Multivariate access
D.
All of these
Ans:
All of these
Explanation :
All are memory access mechanism which a CD Player can use.
[3] Each box in a spreadsheet is called a _.
A.
Cell
B.
Block
C.
Field
D.
Table
Ans:
Cell
Explanation :
Each box in a spreadsheet is called a cell.
[4] Which of the following specialized programs is used in locating information on the Web?
A.
Search engine
B.
Information finder
C.
Web browser
D.
Search query
Ans:
Search engine
Explanation :
The search engine searches the Internet for the information you want and displays it on your computer screen. Some popular search engines are Google, Yahoo, Bing, Ask, AOL, Look Smart, and Netscape Search.
[5] Which is of the following terms is used for unsolicited e-mail?
A.
News Group
B.
Usenet
C.
Backbone
D.
Spam
Ans:
Spam
Explanation :
Spam is unsolicited e-mail that is mostly sent by an electronic messaging system used by various commercial organizations to send bulk messages to a large number of addresses.
[6] What does P2P stands for?
A.
Peer To Peer
B.
Peek to peek
C.
Past to past
D.
Pair to pair
Ans:
Peer To Peer
Explanation :
P2P stands for Peer To Peer.
[7] Which of the following was used to program the first computer?
A.
High Level language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
Earliest computers used Machine language.
[8] Who is the chief of Microsoft?
A.
Babbage
B.
Bill Gates
C.
Bill Clinton
D.
Bush
Ans:
Bill Gates
Explanation :
Bill Gates is the chief of Microsoft.
[9] ODBC stands for .
A.
Object Database Connectivity
B.
Oral Database Connectivity
C.
Oracle Database Connectivity
D.
Open Database Connectivity
Ans:
Open Database Connectivity
Explanation :
Open Database Connectivity (ODBC) is an open standard application programming interface (API) for accessing a database.
[10] Which among the following are valid filters available in MS Access?
A.
Filter by form
B.
Filter by selection
C.
Common Filter
D.
All of the above
Ans:
All of the above
Explanation :
Common filters: To filter for specific values or a range of values. Filter by Selection: To filter all the rows in a table that contains a value that matches a selected value in a row by filtering the datasheet view.
[11] From which version Microsoft introduced Backstage View for Access Interface?
A.
Access 2003
B.
Access 2007
C.
Access 2010
D.
Access 2000
Ans:
Access 2007
Explanation :
In Microsoft Office applications (Word, Excel, PowerPoint, Outlook, Access), versions 2007 and later there is an option for the backstage view that allows you to manipulate aspects of a file.
[12] Which of the following elements are used in an e-mail to express emotions of feelings clearly?
A.
Acronyms
B.
Abbreviations
C.
Rich text
D.
Emoticons or smileys
Ans:
Emoticons or smileys
Explanation :
Emoticons or smileys are elements that help you express your emotions or feelings more clearly in your e-mail. They provide a more direct and funny way to express yourself in addition to the words you use in your e-mail message.
[13] Which of the following forms a part of a search engine?
A.
Spiders or Web crawlers
B.
Indexing software
C.
Search algorithm
D.
All of these
Ans:
All of these
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
PowerPoint is used to make presentations/slide shows.
[2] A CD player can access data/information using which method?
A.
Sequential access
B.
Random access
C.
Multivariate access
D.
All of these
Ans:
All of these
Explanation :
All are memory access mechanism which a CD Player can use.
[3] Each box in a spreadsheet is called a _.
A.
Cell
B.
Block
C.
Field
D.
Table
Ans:
Cell
Explanation :
Each box in a spreadsheet is called a cell.
[4] Which of the following specialized programs is used in locating information on the Web?
A.
Search engine
B.
Information finder
C.
Web browser
D.
Search query
Ans:
Search engine
Explanation :
The search engine searches the Internet for the information you want and displays it on your computer screen. Some popular search engines are Google, Yahoo, Bing, Ask, AOL, Look Smart, and Netscape Search.
[5] Which is of the following terms is used for unsolicited e-mail?
A.
News Group
B.
Usenet
C.
Backbone
D.
Spam
Ans:
Spam
Explanation :
Spam is unsolicited e-mail that is mostly sent by an electronic messaging system used by various commercial organizations to send bulk messages to a large number of addresses.
[6] What does P2P stands for?
A.
Peer To Peer
B.
Peek to peek
C.
Past to past
D.
Pair to pair
Ans:
Peer To Peer
Explanation :
P2P stands for Peer To Peer.
[7] Which of the following was used to program the first computer?
A.
High Level language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
Earliest computers used Machine language.
[8] Who is the chief of Microsoft?
A.
Babbage
B.
Bill Gates
C.
Bill Clinton
D.
Bush
Ans:
Bill Gates
Explanation :
Bill Gates is the chief of Microsoft.
[9] ODBC stands for .
A.
Object Database Connectivity
B.
Oral Database Connectivity
C.
Oracle Database Connectivity
D.
Open Database Connectivity
Ans:
Open Database Connectivity
Explanation :
Open Database Connectivity (ODBC) is an open standard application programming interface (API) for accessing a database.
[10] Which among the following are valid filters available in MS Access?
A.
Filter by form
B.
Filter by selection
C.
Common Filter
D.
All of the above
Ans:
All of the above
Explanation :
Common filters: To filter for specific values or a range of values. Filter by Selection: To filter all the rows in a table that contains a value that matches a selected value in a row by filtering the datasheet view.
[11] From which version Microsoft introduced Backstage View for Access Interface?
A.
Access 2003
B.
Access 2007
C.
Access 2010
D.
Access 2000
Ans:
Access 2007
Explanation :
In Microsoft Office applications (Word, Excel, PowerPoint, Outlook, Access), versions 2007 and later there is an option for the backstage view that allows you to manipulate aspects of a file.
[12] Which of the following elements are used in an e-mail to express emotions of feelings clearly?
A.
Acronyms
B.
Abbreviations
C.
Rich text
D.
Emoticons or smileys
Ans:
Emoticons or smileys
Explanation :
Emoticons or smileys are elements that help you express your emotions or feelings more clearly in your e-mail. They provide a more direct and funny way to express yourself in addition to the words you use in your e-mail message.
[13] Which of the following forms a part of a search engine?
A.
Spiders or Web crawlers
B.
Indexing software
C.
Search algorithm
D.
All of these
Ans:
All of these
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
Each box in a spreadsheet is called a cell.
[4] Which of the following specialized programs is used in locating information on the Web?
A.
Search engine
B.
Information finder
C.
Web browser
D.
Search query
Ans:
Search engine
Explanation :
The search engine searches the Internet for the information you want and displays it on your computer screen. Some popular search engines are Google, Yahoo, Bing, Ask, AOL, Look Smart, and Netscape Search.
[5] Which is of the following terms is used for unsolicited e-mail?
A.
News Group
B.
Usenet
C.
Backbone
D.
Spam
Ans:
Spam
Explanation :
Spam is unsolicited e-mail that is mostly sent by an electronic messaging system used by various commercial organizations to send bulk messages to a large number of addresses.
[6] What does P2P stands for?
A.
Peer To Peer
B.
Peek to peek
C.
Past to past
D.
Pair to pair
Ans:
Peer To Peer
Explanation :
P2P stands for Peer To Peer.
[7] Which of the following was used to program the first computer?
A.
High Level language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
Earliest computers used Machine language.
[8] Who is the chief of Microsoft?
A.
Babbage
B.
Bill Gates
C.
Bill Clinton
D.
Bush
Ans:
Bill Gates
Explanation :
Bill Gates is the chief of Microsoft.
[9] ODBC stands for .
A.
Object Database Connectivity
B.
Oral Database Connectivity
C.
Oracle Database Connectivity
D.
Open Database Connectivity
Ans:
Open Database Connectivity
Explanation :
Open Database Connectivity (ODBC) is an open standard application programming interface (API) for accessing a database.
[10] Which among the following are valid filters available in MS Access?
A.
Filter by form
B.
Filter by selection
C.
Common Filter
D.
All of the above
Ans:
All of the above
Explanation :
Common filters: To filter for specific values or a range of values. Filter by Selection: To filter all the rows in a table that contains a value that matches a selected value in a row by filtering the datasheet view.
[11] From which version Microsoft introduced Backstage View for Access Interface?
A.
Access 2003
B.
Access 2007
C.
Access 2010
D.
Access 2000
Ans:
Access 2007
Explanation :
In Microsoft Office applications (Word, Excel, PowerPoint, Outlook, Access), versions 2007 and later there is an option for the backstage view that allows you to manipulate aspects of a file.
[12] Which of the following elements are used in an e-mail to express emotions of feelings clearly?
A.
Acronyms
B.
Abbreviations
C.
Rich text
D.
Emoticons or smileys
Ans:
Emoticons or smileys
Explanation :
Emoticons or smileys are elements that help you express your emotions or feelings more clearly in your e-mail. They provide a more direct and funny way to express yourself in addition to the words you use in your e-mail message.
[13] Which of the following forms a part of a search engine?
A.
Spiders or Web crawlers
B.
Indexing software
C.
Search algorithm
D.
All of these
Ans:
All of these
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
Spam is unsolicited e-mail that is mostly sent by an electronic messaging system used by various commercial organizations to send bulk messages to a large number of addresses.
[6] What does P2P stands for?
A.
Peer To Peer
B.
Peek to peek
C.
Past to past
D.
Pair to pair
Ans:
Peer To Peer
Explanation :
P2P stands for Peer To Peer.
[7] Which of the following was used to program the first computer?
A.
High Level language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
Earliest computers used Machine language.
[8] Who is the chief of Microsoft?
A.
Babbage
B.
Bill Gates
C.
Bill Clinton
D.
Bush
Ans:
Bill Gates
Explanation :
Bill Gates is the chief of Microsoft.
[9] ODBC stands for .
A.
Object Database Connectivity
B.
Oral Database Connectivity
C.
Oracle Database Connectivity
D.
Open Database Connectivity
Ans:
Open Database Connectivity
Explanation :
Open Database Connectivity (ODBC) is an open standard application programming interface (API) for accessing a database.
[10] Which among the following are valid filters available in MS Access?
A.
Filter by form
B.
Filter by selection
C.
Common Filter
D.
All of the above
Ans:
All of the above
Explanation :
Common filters: To filter for specific values or a range of values. Filter by Selection: To filter all the rows in a table that contains a value that matches a selected value in a row by filtering the datasheet view.
[11] From which version Microsoft introduced Backstage View for Access Interface?
A.
Access 2003
B.
Access 2007
C.
Access 2010
D.
Access 2000
Ans:
Access 2007
Explanation :
In Microsoft Office applications (Word, Excel, PowerPoint, Outlook, Access), versions 2007 and later there is an option for the backstage view that allows you to manipulate aspects of a file.
[12] Which of the following elements are used in an e-mail to express emotions of feelings clearly?
A.
Acronyms
B.
Abbreviations
C.
Rich text
D.
Emoticons or smileys
Ans:
Emoticons or smileys
Explanation :
Emoticons or smileys are elements that help you express your emotions or feelings more clearly in your e-mail. They provide a more direct and funny way to express yourself in addition to the words you use in your e-mail message.
[13] Which of the following forms a part of a search engine?
A.
Spiders or Web crawlers
B.
Indexing software
C.
Search algorithm
D.
All of these
Ans:
All of these
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
Earliest computers used Machine language.
[8] Who is the chief of Microsoft?
A.
Babbage
B.
Bill Gates
C.
Bill Clinton
D.
Bush
Ans:
Bill Gates
Explanation :
Bill Gates is the chief of Microsoft.
[9] ODBC stands for .
A.
Object Database Connectivity
B.
Oral Database Connectivity
C.
Oracle Database Connectivity
D.
Open Database Connectivity
Ans:
Open Database Connectivity
Explanation :
Open Database Connectivity (ODBC) is an open standard application programming interface (API) for accessing a database.
[10] Which among the following are valid filters available in MS Access?
A.
Filter by form
B.
Filter by selection
C.
Common Filter
D.
All of the above
Ans:
All of the above
Explanation :
Common filters: To filter for specific values or a range of values. Filter by Selection: To filter all the rows in a table that contains a value that matches a selected value in a row by filtering the datasheet view.
[11] From which version Microsoft introduced Backstage View for Access Interface?
A.
Access 2003
B.
Access 2007
C.
Access 2010
D.
Access 2000
Ans:
Access 2007
Explanation :
In Microsoft Office applications (Word, Excel, PowerPoint, Outlook, Access), versions 2007 and later there is an option for the backstage view that allows you to manipulate aspects of a file.
[12] Which of the following elements are used in an e-mail to express emotions of feelings clearly?
A.
Acronyms
B.
Abbreviations
C.
Rich text
D.
Emoticons or smileys
Ans:
Emoticons or smileys
Explanation :
Emoticons or smileys are elements that help you express your emotions or feelings more clearly in your e-mail. They provide a more direct and funny way to express yourself in addition to the words you use in your e-mail message.
[13] Which of the following forms a part of a search engine?
A.
Spiders or Web crawlers
B.
Indexing software
C.
Search algorithm
D.
All of these
Ans:
All of these
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
Open Database Connectivity (ODBC) is an open standard application programming interface (API) for accessing a database.
[10] Which among the following are valid filters available in MS Access?
A.
Filter by form
B.
Filter by selection
C.
Common Filter
D.
All of the above
Ans:
All of the above
Explanation :
Common filters: To filter for specific values or a range of values. Filter by Selection: To filter all the rows in a table that contains a value that matches a selected value in a row by filtering the datasheet view.
[11] From which version Microsoft introduced Backstage View for Access Interface?
A.
Access 2003
B.
Access 2007
C.
Access 2010
D.
Access 2000
Ans:
Access 2007
Explanation :
In Microsoft Office applications (Word, Excel, PowerPoint, Outlook, Access), versions 2007 and later there is an option for the backstage view that allows you to manipulate aspects of a file.
[12] Which of the following elements are used in an e-mail to express emotions of feelings clearly?
A.
Acronyms
B.
Abbreviations
C.
Rich text
D.
Emoticons or smileys
Ans:
Emoticons or smileys
Explanation :
Emoticons or smileys are elements that help you express your emotions or feelings more clearly in your e-mail. They provide a more direct and funny way to express yourself in addition to the words you use in your e-mail message.
[13] Which of the following forms a part of a search engine?
A.
Spiders or Web crawlers
B.
Indexing software
C.
Search algorithm
D.
All of these
Ans:
All of these
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
In Microsoft Office applications (Word, Excel, PowerPoint, Outlook, Access), versions 2007 and later there is an option for the backstage view that allows you to manipulate aspects of a file.
[12] Which of the following elements are used in an e-mail to express emotions of feelings clearly?
A.
Acronyms
B.
Abbreviations
C.
Rich text
D.
Emoticons or smileys
Ans:
Emoticons or smileys
Explanation :
Emoticons or smileys are elements that help you express your emotions or feelings more clearly in your e-mail. They provide a more direct and funny way to express yourself in addition to the words you use in your e-mail message.
[13] Which of the following forms a part of a search engine?
A.
Spiders or Web crawlers
B.
Indexing software
C.
Search algorithm
D.
All of these
Ans:
All of these
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
The three important elements of a search engine are spiders or Web crawlers, indexing software and search algorithm.
[14] The process of connecting/ accessing to an account is called as:
A.
Login
B.
Logout
C.
Sign up
D.
Sign Out
Ans:
Login
Explanation :
Login is the process of connecting/ accessing to an account.
[15] The first computers were programmed using which of the following language.
A.
Assembly language
B.
Machine language
C.
Source code
D.
Object code
Ans:
Machine language
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
First computers were programmed using machine language.
[16] Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
A.
Candidate key
B.
Sub key
C.
Super key
D.
Foreign key
Ans:
Super key
Explanation :
Super key is a set of one or more attributes taken collectively to uniquely identify a record
[17] In the relational model, a cardinality is termed as _.
A.
Number of tuples
B.
Number of attributes
C.
Number of tables
D.
Number of constraints
Ans:
Number of tuples
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
In the relational model, cardinality is termed as Number of tuples.
[18] Name the type of memory which clears everything when the power of a computer gets switched off.
A.
Volatile
B.
Non-volatile
C.
ROM
D.
Flash memory
Ans:
Volatile
Explanation :
Volatile memory is a type of memory that clears everything when the power of a computer gets switched off, whereas nonvolatile memory retains the data even when the power gets switched off. Moreover, ROM and flash memory also retain the data in case the power gets switched off.
[19] A handheld device that allows you to control your computer without typing instructions from a keyboard is known as _.
A.
Tablet
B.
PDA
C.
Mouse
D.
Mike
Ans:
Mouse
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
A mouse is a handheld device that allows you to control your computer without typing the instructions from the keyboard. By using a mouse, you can select icons, open programs, and select, commands, present in a program by moving the pointer.
[20] What does DOS stands for?
A.
Digital Operating Session
B.
Disk Operating System
C.
Digital Operating System
D.
Disk Opening System
Ans:
Disk Operating System
Explanation :
DOS stands for Disk Operating System. It is the first operating system developed by Microsoft.
[21] What acts as master software that works as a mediator between a computer user and the hardware of a computer?
A.
Application Program
B.
Motherboard
C.
Antivirus
D.
Operating System
Ans:
Operating System
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
Operating system provided an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
[22] Which of the following number systems is considered as a base-10 number system?
A.
Decimal number system
B.
Binary number system
C.
Octal number system
D.
Hexadecimal number system
Ans:
Decimal number system
Explanation :
Decimal number system has unique 10 digits, that is, from 0 to 9, to represent a number and its base (or radix) is 10. The decimal number system is also called a base-10 system as it has 10 digits.
[23] The hexadecimal number system represents symbols and _.
A.
0-9, A-E
B.
0-9, A-F
C.
1-10, A-E
D.
1-10, A-F
Ans:
0-9, A-F
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
The hexadecimal number system has 16 possible digits represented by the symbols 0 to 9 and the alphabets A, B, C, D, E and F.
[24] Which of the following gates is a complement of the X-OR gate?
A.
NOT gate
B.
NOR gate
C.
AND gate
D.
X-NOR gate
Ans:
X-NOR gate
Explanation :
X-NOR gate is a complement of the X-OR gate. The truth table of the X-NOR gate is the complement (opposite) to the X-OR gate.
[25] The conversion of the binary number 10100111011 into its decimal form is _.
A.
133910
B.
134910
C.
139310
D.
193910
Ans:
133910
Explanation :
The required conversion is as follows:
Explanation :
The required conversion is as follows: