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
131
Which of the following is not a characteristic of a WAN?
Answer:
High speed
While WAN speeds are improving, they are generally slower than LANs due to the long distances involved.
132
Which network type is generally the most secure?
Answer:
LAN
LANs are generally more secure than WANs because they are privately owned and have a smaller, more controlled area to protect.
133
What happens to a packet when it arrives at a router?
Answer:
The router examines the packet's destination address and sends it on the best path.
This is the fundamental process of routing in a packet-switched network.
134
How many collision domains does a 12-port hub create?
Answer:
1
A hub creates a single collision domain because all ports are part of the same shared bandwidth.
135
What is a "thin client"?
Answer:
A client computer that relies heavily on the server for processing
A thin client is a lightweight computer that has its processing and data storage done on a central server.
136
What is the main function of a switch?
Answer:
To forward data based on MAC addresses
A switch's primary role is to forward data frames to their destination within a LAN using MAC addresses.
137
Which model is generally more secure?
Answer:
Client-server model
Security is centralized and easier to manage on a client-server network. In a P2P network, security is the responsibility of each individual user.
138
Another name for a shared network is:
Answer:
Hub
A hub is a simple networking device that shares bandwidth among all connected devices, making it a shared network medium.
139
The Internet is:
Answer:
A large network of networks
Fundamentally, the Internet is a vast, global network of interconnected computer networks.
140
Which of the following is measured in bits per second (bps)?
Answer:
Bandwidth
Bandwidth is a measure of data rate, and its units are bits per second (e.g., Mbps for megabits per second, Gbps for gigabits per second).