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
3801
What is the typical range of a PAN?
Answer:
Up to 10 meters
PANs, especially those using Bluetooth, have a very limited range, typically around 10 meters.
3802
A network for a single person is a:
Answer:
PAN
A Personal Area Network (PAN) is a network that is used by a single individual.
3803
What is "clickjacking"?
Answer:
A malicious technique of tricking a user into clicking on something different from what the user perceives, thus potentially revealing confidential information or taking control of their computer while clicking on seemingly innocuous web pages
Clickjacking is a deceptive attack that can be difficult to detect.
3804
The first webcam was used to monitor a:
Answer:
Coffee pot
In 1991, researchers at the University of Cambridge set up a camera to monitor the coffee pot in their main computer lab, making it the first webcam.
3805
What is a "URL shortener"?
Answer:
A service that creates a short, unique URL that redirects to a longer URL
URL shorteners are often used on social media, where character limits are a concern.
3806
Who invented the programming language JavaScript?
Answer:
Brendan Eich
JavaScript was created by Brendan Eich in 1995 while he was working at Netscape Communications.
3807
A device that forwards data packets along networks is a:
Answer:
Router
This is another way of describing the function of a router.
3808
What is a "man-in-the-middle" (MITM) attack?
Answer:
An attack where the attacker secretly relays and possibly alters the communication between two parties who believe they are directly communicating with each other
MITM attacks are a serious threat to your privacy and security.
3809
What is a "data breach"?
Answer:
An incident in which sensitive, protected, or confidential data has been accessed, disclosed, or used by an unauthorized individual
Data breaches are a serious threat to your privacy and security.
3810
The first emoticon :-) was used by:
Answer:
Scott Fahlman
In 1982, Scott Fahlman proposed the use of :-) and :-( as emoticons on the Carnegie Mellon University computer science general board.