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
6071
A network of ATMs in a city is an example of a:
Answer:
MAN
ATMs across a city would be connected using a MAN.
6072
What is the typical range of a PAN?
Answer:
Up to 10 meters
PANs, especially those using Bluetooth, have a very limited range, typically around 10 meters.
6073
Which network type has the lowest data transfer rates?
Answer:
PAN
PANs, while convenient for personal devices, typically have lower data transfer rates than LANs, MANs, and WANs.
6074
What is a potential health concern associated with wireless networks?
Answer:
Exposure to radiofrequency (RF) radiation
While there is no scientific consensus on the health effects, some people are concerned about long-term exposure to the radio waves emitted by wireless devices.
6075
Which device can reduce network traffic by not forwarding broadcasts?
Answer:
Router
By default, routers do not forward broadcast traffic from one network to another, which helps to contain broadcast storms.
6076
What is packet switching?
Answer:
A method of grouping data into packets for transmission over a digital network
Packet switching breaks down a message into smaller pieces called packets, which are then sent independently over the network and reassembled at the destination.
6077
Which device would you use to connect two separate LANs?
Answer:
Router
A router is the device specifically designed to connect different networks.
6078
Which model is more expensive to implement initially?
Answer:
Client-server model
The client-server model requires the purchase of a dedicated server and specialized server software, making it more expensive upfront.
6079
If you have high bandwidth but also high latency, what would be the effect?
Answer:
You could download large files quickly, but web browsing would feel slow.
High bandwidth allows for a large volume of data transfer, but high latency means there is a significant delay for each individual request, making interactive tasks like web browsing feel sluggish.
6080
Which type of cable is most commonly used in modern wired Ethernet networks?
Answer:
Twisted-pair cable
Unshielded Twisted Pair (UTP) cables, such as Cat5e and Cat6, are the standard for most wired LANs.