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
3981
What is a "generic top-level domain" (gTLD)?
Answer:
All of the above
Examples of gTLDs include ".com", ".net", ".org", and ".info".
3982
What are "paid search results"?
Answer:
The search results that are advertisements
Paid search results are usually displayed at the top or bottom of the SERP and are labeled as "Ad" or "Sponsored".
3983
The IEEE 802.11 standard refers to:
Answer:
Wireless networks (Wi-Fi)
The IEEE 802.11 family of standards defines the protocols for wireless local area networks.
3984
What is a packet?
Answer:
A small unit of data that is routed through a network
In packet switching, messages are broken down into these small, manageable units called packets.
3985
What is the name of the browser developed by the Vivaldi Technologies company?
Answer:
Vivaldi
Vivaldi is a freeware, cross-platform web browser developed by Vivaldi Technologies, a company founded by the co-founder and former CEO of Opera, Jon Stephenson von Tetzchner.
3986
Which application is most sensitive to jitter?
Answer:
Voice over IP (VoIP)
For real-time conversations like a phone call, inconsistent packet delays (jitter) can cause the audio to sound choppy and distorted.
3987
What does a switch do when it receives a frame with an unknown destination MAC address?
Answer:
It floods the frame to all ports except the one it came in on.
When a switch doesn't know where a destination MAC address is, it acts like a hub and floods the frame to all ports to ensure it reaches its destination.
3988
Which of the following is a valid website address?
Answer:
[www.it.com](https://www.it.com)
A valid website address, or URL, typically consists of a subdomain (like `www`), a domain name (like `it`), and a top-level domain (like `.com`). `www.it.com` follows this structure. The other options are missing a component or contain invalid characters.
3989
What is the "General Data Protection Regulation" (GDPR)?
Answer:
A law in the European Union that regulates the collection and use of personal data
The GDPR has had a major impact on how websites handle cookies and other user data.
3990
How do you register a service worker?
Answer:
By using the `navigator.serviceWorker.register()` method in JavaScript
This is the first step in using a service worker.