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
301
The first online purchase was made in:
Answer:
1994
One of the earliest known online transactions was a Sting CD sold by Dan Kohn through his website NetMarket in 1994.
302
What is the name of a text management system that links references across multiple documents?
Answer:
Hypertext
Hypertext allows linking and referencing between documents using clickable elements.
303
Which network type connects a user's smartphone to their wireless earbuds?
Answer:
PAN
The short-range wireless connection between a smartphone and earbuds is a Personal Area Network (PAN).
304
What is the "local storage" feature in web browsers?
Answer:
A way for websites to store larger amounts of data on your computer than they can with cookies
Local storage is often used for web applications that need to work offline.
305
What is a "user agent" in the context of web browsers?
Answer:
A string of text that a browser sends to a web server to identify itself
The user agent string contains information about the browser, its version number, and the operating system it is running on.
306
Which model is easier to manage and administer?
Answer:
Client-server model
Centralized administration makes it much easier to manage user accounts, permissions, and security policies.
307
Which of the following is the most popular search engine in the world?
Answer:
Google
Google dominates the global search engine market with a market share of over 90%.
308
What is a collision domain?
Answer:
A network segment where data packets can collide
A collision domain is a part of a network where packet collisions can occur when two devices try to send data at the same time.
309
What is a "persistent cookie"?
Answer:
A cookie that is stored on your computer for a long period of time
Persistent cookies are used to remember your preferences and settings for future visits.
310
The "reader mode" in some browsers is designed to:
Answer:
Remove clutter like ads and sidebars from articles
Reader mode simplifies the layout of a webpage, making it easier to read long articles by removing distracting elements.