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
201
What is a "subdomain"?
Answer:
A domain that is part of a larger domain
For example, in "https://www.google.com/search?q=blog.example.com", "blog" is the subdomain.
202
XLL definition is used along with XML to specify
Answer:
The structure of XML document
XLL (likely a confusion with XML Schema or DTD) defines the structural rules of XML documents.
203
Which company develops the Chrome web browser?
Answer:
Google
Google Chrome is a freeware web browser developed by Google.
204
A web address uniquely identifies a specific:
Answer:
Website
Each website has a unique web address to identify it on the Internet.
205
What is a "drive-by download"?
Answer:
The unintentional download of a virus or malicious software to your computer
Drive-by downloads can occur when you visit a malicious website or click on a malicious advertisement.
206
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.
207
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.
208
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.
209
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.
210
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.