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
6051
What is the benefit of using a switch instead of a hub?
Answer:
Both a and b
By reducing collisions, a switch significantly increases the overall performance of the network.
6052
A satellite internet connection generally has:
Answer:
High bandwidth and high latency
While satellite can provide decent bandwidth, it has very high latency due to the immense distance the signal must travel to the satellite and back.
6053
What is a "dedicated server"?
Answer:
A server that performs only one specific function (e.g., a web server)
A dedicated server is optimized for a single purpose, which improves its performance and reliability for that task.
6054
Nortel is a manufacturer of:
Answer:
Network equipment
Nortel was a major manufacturer of telecommunications and data networking equipment.
6055
In which network model is there a central, dedicated server?
Answer:
Client-server model
The client-server model is defined by having a central server that provides resources and services to client computers.
6056
Which model is considered "decentralized"?
Answer:
Peer-to-peer model
P2P is a decentralized architecture where there is no single point of control.
6057
Which device learns the MAC addresses of connected devices?
Answer:
Switch
A switch builds a MAC address table to learn which devices are on which ports.
6058
In a home network, the device provided by your ISP that connects to the internet is a:
Answer:
Modem
A modem (modulator-demodulator) is the device that converts the signal from your ISP into a format that your computer can understand.
6059
Which device works in full-duplex mode, allowing devices to send and receive data simultaneously?
Answer:
Switch
Switches operate in full-duplex mode, which means each port can send and receive data at the same time, eliminating collisions.
6060
Communication channels that send data in both directions, but not at once, are operating in:
Answer:
Half duplex mode
Half duplex allows data in both directions, but only one direction at a time.