This section provides 100 questions on Computer Awareness for various competitive examinations in India.
1. A network that is connected to the Internet, but uses encryption to scramble all the data sent through the Internet is called ?
[A] My network
[B] Virtual Private Network
[C] Social Network
[D] None of the above
Show Answer
Correct Answer: B [Virtual Private Network ]
Notes:
A virtual private network (VPN) extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. Applications running on a computing device, e.g., a laptop, desktop, smartphone, across a VPN may therefore benefit from the functionality, security, and management of the private network. Encryption is a common, though not an inherent, part of a VPN connection.
2. The word bandwidth is also used to mean ________?
[A] width of the data cable
[B] amount of data transferred
[C] number of the computers on a particular network
[D] none of the above
Show Answer
Correct Answer: B [amount of data transferred ]
Notes:
Bandwidth refers to the amount of data that can be transmitted in a fixed amount of time. For digital devices, the bandwidth is usually expressed in bits per second(bps) or bytes per second.
3. NetBIOS was introduced in 1983 by which company as an improvement to the standard BIOS used by Windows-based computers?
[A] Dell
[B] IBM
[C] Compaq
[D] SyteK Inc
Show Answer
Correct Answer: D [SyteK Inc]
Notes:
Sytek Inc. which is now known as Hughes LAN Systems Inc. had created the NetBIOS protocol in 1983, later used by Microsoft to make its early networks.
4. DDL is used to define the structure of a database, including the tables, columns, and data types that it contains. Its full form is?
[A] Data Definition Language
[B] Data Definition Link
[C] Determination Language.
[D] None of these
Show Answer
Correct Answer: A [Data Definition Language]
Notes:
A data definition or data description language (DDL) is a syntax similar to a computer programming language for defining data structures, especially database schemas. DDL statements create and modify database objects such as tables, indexes, and users. Common DDL statements are CREATE, ALTER, and DROP.
5. A DSLAM is a device used by Internet Service Providers (ISPs) to route incoming DSL connections to the Internet. What is its correct full form?
[A] Digital Subscriber Line Access Multiplexer
[B] Digital Subscriber Line Access Multiplier
[C] Digital Service Line Access Multiplexer
[D] None of these
Show Answer
Correct Answer: A [Digital Subscriber Line Access Multiplexer ]
6. Microsoft first introduced an operating environment named Windows in which year?
[A] 1977
[B] 1980
[C] 1985
[D] 1990
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7. A hybrid computer is the one which exhibits the features of __?
[A] analog computer
[B] digital computer
[C] both analog and digital computer
[D] mainframe computer
Show Answer
Correct Answer: C [both analog and digital computer ]
Notes:
Hybrid computers are those computers which exhibit features of both the analog computers and digital computers.
8. Structured programming languages such as C, COBOL and FORTRAN were used in which of the following computers?
[A] First Generation Computers
[B] Second Generation Computers
[C] Third Generation Computers
[D] Fourth Generation Computers
Show Answer
Correct Answer: C [Third Generation Computers ]
9. In a computer file systems which among the following is top or first in hierarchy?
[A] root directory
[B] parent directory
[C] home directory
[D] working directory
Show Answer
Correct Answer: A [root directory ]
Notes:
In computer systems (particularly UNIX and UNIX like OS), root directory is the first and top-most directory in the hierarchy.
10. Which among the following is used for removing a software bug / defect which is available for free of cost from the software provider?
[A] Version
[B] update
[C] help
[D] patch
Show Answer
Correct Answer: D [patch]
Notes:
A patch is a collective name of all the changes to a computer program aimed to update, fix, or improve it including addressing the security vulnerabilities and other bugs.
