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.
21. What is the name given to the technique of connecting computers?
[A] Node
[B] Topology
[C] Architecture
[D] Ring
Show Answer
Correct Answer: B [Topology]
Notes:
Computer networks can be broken down historically into topologies, which is a technique of connecting computers. The most common topology today is a collapsed ring.
22. Which one of the below is known as the Multi-Port Repeater?
[A] Firewall
[B] HIDS
[C] Hub
[D] Switch
Show Answer
Correct Answer: C [Hub]
Notes:
A hub, in the context of networking, is a hardware device that relays communication data. A hub sends data packets to all devices on a network.
23. Which of the following represents a nibble data?
[A] 2 bits
[B] 4 bits
[C] 6 bits
[D] 8 bits
Show Answer
Correct Answer: B [4 bits]
Notes:
Nibble refers to the half of an eight-bit byte or four binary digits. Byte is a group of bits (8 bits) used to represent a character. A byte is considered as the basic unit of measuring memory size in computer.
24. What is the alteration of the signal due to differing propagation speeds of each of the frequencies called as?
[A] Distortion
[B] Attenuation
[C] Noise
[D] None of the above
Show Answer
Correct Answer: A [Distortion]
Notes:
Distortion is the change in the waveform of the signal due to noise. It is the alteration of the signal due to differing propagation speeds of each of the frequencies.
25. Which of these networks usually have all the computers connected to a hub?
[A] Ring
[B] Tree
[C] Star
[D] Bus
Show Answer
Correct Answer: C [Star]
Notes:
In Star topology, all the computers are connected to a single hub through a cable. This hub is the central node and all others nodes are connected to the central node.
26. Which of the following cables work on the properties of light?
[A] Coaxial cables
[B] Twisted pair
[C] Fiber optics
[D] None
Show Answer
Correct Answer: C [Fiber optics]
Notes:
Fiber Optic works on the properties of light. When light ray hits at critical angle it tends to refracts at 90 degree. This property is the basis of fiber optics.
27. What does the number ’10’ depict in 10BASE-T?
[A] 10 Kbps
[B] 10 Mbps
[C] 10 Gbps
[D] 10 Tbps
Show Answer
Correct Answer: B [10 Mbps]
Notes:
Traditional Ethernet uses 10BASE-T specifications. The number ’10’ depicts 10Mbps speed, BASE stands for baseband, and T stands for Thick Ethernet.
28. What does NIC stand for?
[A] Network Inside Computer
[B] Network inter-connection
[C] Network Interface call
[D] Network Interface card
Show Answer
Correct Answer: D [Network Interface card]
Notes:
NIC stands for Network Interface card. A network interface card (NIC) is a hardware component which is installed on a computer so that it can connect to a network.
29. What role does fibers play in Optical Fiber cables?
[A] Prevent loss of signals
[B] Provide immunity against electromagnetic interference
[C] Both a and b
[D] None
Show Answer
Correct Answer: C [Both a and b]
Notes:
Fibers are used instead of metal wires because signals travel along them with less loss. Also, fibers are immune to electromagnetic interference, a problem from which metal wires suffer excessively. In addition, Fibers are also used for illumination and imaging.
30. Which country funded the ARPANET project?
[A] United Kingdom
[B] United States of America
[C] France
[D] Russia
Show Answer
Correct Answer: B [United States of America]
Notes:
ARPANET was developed under the direction of the U.S. Advanced Research Projects Agency (ARPA) in 1969. It was the network that became the basis for the Internet.
