Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
251
Which card is required to connect a computer to a network?
Answer:
NIC
A Network Interface Card (NIC) is a hardware component necessary for a computer to connect to a network.
252
Which network type is most susceptible to interference?
Answer:
PAN
PANs, often being wireless and short-range, can be susceptible to interference from other wireless devices.
253
To secure a wireless network, you should:
Answer:
a) Change the default router password.
These are all good practices for securing a wireless network.
254
What is necessary for connecting two computers?
Answer:
All of the above, plus access to a transmission medium
Software, hardware, a protocol, and a communication medium are essential for computer communication.
255
What is the main disadvantage of a PAN?
Answer:
Limited range
The primary limitation of a PAN is its very short range, which restricts its use to a small personal area.
256
Which network type would be used to provide internet access to a whole city?
Answer:
MAN
A city-wide internet service would be provided over a Metropolitan Area Network (MAN).
257
What does "full-duplex" mean in the context of a wired network?
Answer:
Data can be sent and received simultaneously.
Full-duplex communication, common in wired Ethernet, allows for two-way data transmission at the same time.
258
What is a "peer" in a P2P network?
Answer:
A computer that can be both a client and a server
The defining feature of a P2P network is that each peer has equivalent capabilities and can share and request resources.
259
More hops generally lead to:
Answer:
Higher latency
Each hop adds a small amount of processing delay, so a path with more hops will have a higher overall latency.
260
What is a packet?
Answer:
A small unit of data that is routed through a network
In packet switching, messages are broken down into these small, manageable units called packets.