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
311
How do you perform a hard refresh in most browsers?
Answer:
By pressing Ctrl+F5 or Shift+F5
The exact key combination may vary depending on your browser and operating system.
312
Which Web browser is included with Microsoft Windows operating systems?
Answer:
Internet Explorer
For many years, Internet Explorer was the default web browser bundled with every version of the Microsoft Windows operating system. In recent versions of Windows, it has been replaced by Microsoft Edge.
313
The "Grammarly" browser extension helps you to:
Answer:
Check your grammar and spelling
Grammarly is a popular tool for improving your writing.
314
Which technology would be used for a PAN (Personal Area Network)?
Answer:
Bluetooth
Bluetooth is a short-range wireless technology that is ideal for creating PANs.
315
Does UDP retransmit lost packets?
Answer:
No, it is a "best effort" protocol
UDP does not provide the reliability mechanisms of TCP, such as retransmission of lost packets. It is faster but less reliable.
316
In packet switching, do all packets in a single message have to take the same route?
Answer:
No, they can take different routes.
This is a key feature of packet switching. Each packet is routed independently, which allows the network to adapt to changing conditions and route around failures or congestion.
317
What is the browser cache used for?
Answer:
To temporarily store parts of web pages, such as images and scripts, to make them load faster on subsequent visits
The cache helps to improve the performance of your browser by reducing the amount of data that needs to be downloaded from the internet.
318
The feature that shows all the web pages you have visited is called the:
Answer:
History list
The history list records and displays websites previously accessed.
319
Who is often credited with the invention of the World Wide Web?
Answer:
Tim Berners-Lee
While working at CERN in 1989, British scientist Tim Berners-Lee invented the World Wide Web. He wrote the first web browser, web server, and the first web page.
320
What is your browser history?
Answer:
A list of all the websites you have visited
Your browser history can be useful for finding a page that you have visited before, but it can also be a privacy concern.