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
What is the purpose of the "robots.txt" file on a website?
Answer:
To provide instructions to search engine crawlers about which pages to index
The robots.txt file is a simple text file that website owners can use to manage crawler traffic to their site.
282
"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.
283
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.
284
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).
285
What is the rendering engine used by Google Chrome?
Answer:
Blink
Blink is a web browser engine developed by Google as part of the Chromium project. It is used by Chrome, Edge, Opera, and other Chromium-based browsers.
286
What is packet loss?
Answer:
When a packet fails to reach its destination
Packet loss occurs when network congestion, hardware errors, or other problems cause a packet to be dropped and not delivered.
287
Which search engine is known for its focus on user privacy?
Answer:
DuckDuckGo
DuckDuckGo does not track its users' searches or personalize search results.
288
What is "WHOIS"?
Answer:
A protocol that is used to query databases that store information about registered domain names
WHOIS data typically includes the name and contact information of the domain registrant.
289
A school's computer lab network is a:
Answer:
LAN
The network in a single computer lab is a classic example of a LAN.
290
Unsolicited email is commonly called:
Answer:
Spam
Spam is unwanted bulk email.