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
4021
What is a "breadcrumb trail"?
Answer:
A navigation aid that shows you your current location within a website's hierarchy
Breadcrumb trails are often found on websites with a deep and complex structure.
4022
What is a disadvantage of packet switching?
Answer:
It can have variable delays (jitter).
Because packets can take different routes and experience different levels of congestion, they can arrive with inconsistent delays, which is a problem for real-time communication.
4023
Which browser is developed by Apple and is the default browser on its devices?
Answer:
Safari
Safari is a graphical web browser developed by Apple, based on the WebKit engine. It is the default browser on Apple devices.
4024
What is the purpose of the "password manager" in a web browser?
Answer:
All of the above
A password manager can be a very useful tool for improving your online security.
4025
What is "deep linking"?
Answer:
Linking to a specific page or piece of content on a website, rather than the home page
Deep linking is a common practice on the web.
4026
What is the main difference between 2.4 GHz and 5 GHz Wi-Fi?
Answer:
5 GHz is faster but has a shorter range.
The 5 GHz frequency band offers higher speeds but is more easily obstructed and has a shorter range than the 2.4 GHz band.
4027
Which model typically has higher ongoing maintenance costs?
Answer:
Client-server model
The client-server model requires a skilled administrator to maintain the server and network, which adds to the cost.
4028
The first email was sent in:
Answer:
1971
Ray Tomlinson sent the first email on the ARPANET in 1971.
4029
What is the primary advantage of packet switching over circuit switching?
Answer:
It is more efficient in its use of network resources.
Packet switching allows multiple users to share the same network connection, as packets can be interleaved, which is much more efficient than dedicating a circuit for each communication.
4030
What is a "third-party cookie"?
Answer:
Both b and c
Third-party cookies are often used for advertising and tracking purposes.