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
241
Which of the following is an example of a wireless network technology?
Answer:
Wi-Fi
Wi-Fi is a wireless networking technology that uses radio waves to provide wireless high-speed internet and network connections.
242
A network in a single room or building is a:
Answer:
LAN
A Local Area Network (LAN) is confined to a small area, such as a single room, a building, or a campus.
243
What is the main job of the server in a client-server network?
Answer:
To listen for and respond to requests from clients
A server's primary function is to wait for requests from clients and then fulfill those requests.
244
"Tethering" your phone to your laptop creates a:
Answer:
Wireless PAN
Tethering creates a small, personal wireless network to share your phone's internet connection.
245
Which device operates at the Data Link layer (Layer 2) of the OSI model?
Answer:
Switch
A switch operates at the Data Link layer and uses MAC addresses to forward data to the specific port of the destination device.
246
The method in public switched telephone systems that creates a direct link between devices is called \_\_\_\_.
Answer:
Circuit switching
Circuit switching establishes a dedicated, end-to-end communication path for the duration of a connection.
247
A "domain" in Windows is an example of a:
Answer:
Client-server network
A domain is a client-server network that is controlled by a central server called a domain controller.
248
What is bandwidth?
Answer:
The maximum amount of data that can be transmitted over a network in a given amount of time
Bandwidth is a measure of the capacity of a network connection, often expressed in bits per second (bps). It's like the width of a highway.
249
What is the main disadvantage of a hub?
Answer:
It creates a single collision domain.
Because a hub broadcasts all data to all ports, it creates a single collision domain, which can lead to network congestion and poor performance.
250
Which network type typically uses public infrastructure like telephone lines or fiber optic cables provided by a third party?
Answer:
WAN
WANs often rely on the infrastructure of telecommunication companies to connect locations over long distances.