Computers and IT MCQs
Computer Awareness Questions and Quiz for Banking, IBPS, RRB, RBI, SBI, NABARD examinations of 2024-2025. Computer Awareness MCQs for Competitive Exams. GKToday Computer Awareness for IBPS PO, IBPS Clerk, Bank PO, Bank Clerk and other entrance / competitive examinations.
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. 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.
3. Which among the following has been standardized in the IEEE 802.3 specification?
[A] Bluetooth
[B] Ethernet
[C] WiMAX
[D] All of the above
Show Answer
Correct Answer: B [Ethernet]
Notes:
Ethernet is a system for connecting a number of computer systems. It forms as LAN(local area network) with standard protocols. It was standardized in the IEEE.
4. ©Brain also known as the first computer virus for MS-DOS was written by two brothers belonging to which among the following countries?
[A] Malaysia
[B] India
[C] Pakistan
[D] Iran
Show Answer
Correct Answer: C [Pakistan]
Notes:
Brain is the first PC virus in the world. It began infecting 5.2″ floppy disks in 1986. It was the work of two brothers, Basit and Amjad Farooq Alvi of Pakistan.
5. One nibble is equal to_?
[A] 4 Bits
[B] 4 Bytes
[C] 8 Bytes
[D] 8 Kilo Bytes
Show Answer
Correct Answer: A [4 Bits]
Notes:
In computing, a nibble (often nybble or even nyble to simulate the spelling of byte) is a four-bit aggregation, or half an octet. As a nibble contains 4 bits, there are sixteen possible values, so a nibble corresponds to a single hexadecimal digit (thus, it is often referred to as a “hex digit” or “hexit”).
6. Which of the following is the first example of an electromechanical relay computer?
[A] Differential Analyzer
[B] Torpedo Data Computer
[C] Z2
[D] Jacquard Loom
Show Answer
Correct Answer: C [Z2]
Notes:
The Z2, created by a German Engineer Konrad Zuse in 1939, was one of the foremost examples of an electromechanical relay computer.
7. Which of the following is not an input device of the computer?
[A] Trackball
[B] Image Scanner
[C] Joystick
[D] Sound Card
Show Answer
Correct Answer: D [Sound Card]
Notes:
A sound card is not an input device of the computer. A trackball is a pointing device which consists of a ball held by a socket.
8. Which of the following can change the sequence of instructions to be fetched by the processor?
[A] Jumps
[B] Subroutine Calls
[C] Returns
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Processors usually get instructions from memory but the sequence is usually changed by placing of a new value in the PC like branches also called jumps, subroutine calls and returns.
9. Which of the following is a single integrated circuit on which a CPUs are typically constructed?
[A] Microprocessor
[B] Memory
[C] Motherboard
[D] Hard Disk
Show Answer
Correct Answer: A [Microprocessor]
Notes:
CPUs are typically constructed on a single integrated circuit known as the microprocessor.
10. What was the name of the first vacuum tube invented by Lee de Forest in 1906?
[A] Colossus
[B] Leedion
[C] Audion
[D] Radion
Show Answer
Correct Answer: C [Audion]
Notes:
Audion was the first vacuum tube invented in 1906 by Lee de Forest. It was the size of a person’s thumb and glowing red hot like a tiny electric light bulb. This bagged him the nickname as “the father of radio”.
