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
281
Which device would you use to segment a large LAN into smaller, more manageable parts?
Answer:
Router
A router can be used to create subnets, which are smaller logical divisions of a network, to improve performance and security.
282
The Internet is the largest example of a:
Answer:
WAN
The Internet is a global system of interconnected computer networks, making it the ultimate Wide Area Network (WAN).
283
Which of these network types is the most expensive to set up and maintain?
Answer:
WAN
WANs are the most expensive because they cover large distances and often require leasing communication lines from service providers.
284
In the highway analogy for networking, latency is the:
Answer:
Time it takes for a single car to travel from the start to the end of the highway
Latency represents the travel time for a single piece of data, regardless of how much other data is being sent.
285
A network connecting a city's government buildings would be a:
Answer:
MAN
A MAN would be used to connect government buildings that are spread across a city.
286
Which device is concerned with frames?
Answer:
Switch
A switch operates at the Data Link layer, which deals with data in the form of frames.
287
Which device can perform Network Address Translation (NAT)?
Answer:
Router
NAT is a function of a router that allows multiple devices on a private network to share a single public IP address.
288
Why might a video streaming service use a protocol like UDP?
Answer:
Because retransmitting a lost packet of video data from a few seconds ago is pointless.
For real-time streaming, it is better to just drop a lost frame and continue with the live stream rather than waiting for a retransmission and causing a delay.
289
A home Wi-Fi network is an example of a:
Answer:
LAN
A home Wi-Fi network connects devices within a home, which is a small geographical area, so it is a LAN.
290
Which device is used to connect a LAN to the internet?
Answer:
Router
A router is the gateway between a local area network (LAN) and a wide area network (WAN) like the internet.