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
351
Among services available on the World Wide Web are
Answer:
HTTP and HTML
HTTP (Hypertext Transfer Protocol) and HTML (Hypertext Markup Language) are foundational services and standards for accessing and structuring information on the Web[previous answers].
352
What is the law enforcement field called that specializes in retrieving and analyzing deleted or damaged files from computers?
Answer:
Computer forensics
Computer forensics involves recovering and examining data from digital devices for legal evidence, often pertaining to crimes.
353
The "omnibox" in Google Chrome is a combination of which two browser elements?
Answer:
The address bar and the search bar
The omnibox in Chrome functions as both an address bar for typing in URLs and a search bar for entering search queries.
354
What is the primary function of a router?
Answer:
To connect different networks together
A router's main purpose is to route traffic between different networks, such as a home network and the internet.
355
The connection of devices around a person's desk is a:
Answer:
PAN
A PAN is used to connect personal devices such as a laptop, mouse, keyboard, and printer in a small area.
356
Why are wireless networks often "half-duplex"?
Answer:
Because devices on a Wi-Fi network must take turns to transmit to avoid collisions.
In a wireless network, all devices share the same frequency, so they use a system (CSMA/CA) to listen and wait for the channel to be clear before transmitting, which is a half-duplex operation.
357
A network operating system (NOS) like Windows Server is required for which model?
Answer:
Client-server model
A network operating system is specialized software that runs on the server to manage network resources and security.
358
Which model offers better performance when many users access the same resource?
Answer:
Client-server model
A powerful, dedicated server can handle simultaneous requests from many clients more efficiently than a peer computer that is also being used for other tasks.
359
Which is NOT a physical medium for a wired network?
Answer:
Air
Air is the medium for wireless networks, not wired ones.
360
The concept of packet switching was developed by:
Answer:
Donald Davies and Paul Baran
The concept of packet switching, which is fundamental to how data is transmitted over the Internet, was independently developed by Donald Davies and Paul Baran in the 1960s.