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
51
What is a potential health concern associated with wireless networks?
Answer:
Exposure to radiofrequency (RF) radiation
While there is no scientific consensus on the health effects, some people are concerned about long-term exposure to the radio waves emitted by wireless devices.
52
What is "incognito mode" or "private browsing"?
Answer:
A mode that prevents your browser from saving your history, cookies, and other data
Incognito mode can be useful for privacy, but it does not make you anonymous. Your ISP and the websites you visit can still see your activity.
53
What is "sexting"?
Answer:
The sending of sexually explicit photos, images, text messages, or e-mails via a mobile phone or other electronic device
Sexting can have serious consequences, including legal and social ramifications.
54
What is a hybrid model?
Answer:
A network that combines elements of both client-server and P2P models
Some systems, like Skype, use a central server for authentication (client-server) but establish direct connections between users for calls (P2P).
55
Which of the following is measured in bits per second (bps)?
Answer:
Bandwidth
Bandwidth is a measure of data rate, and its units are bits per second (e.g., Mbps for megabits per second, Gbps for gigabits per second).
56
Which network type is more energy-efficient?
Answer:
Wired network
Transmitting data over a wire generally consumes less power than broadcasting a wireless signal.
57
What is a "strong password"?
Answer:
A password that is long and complex, and includes a mix of uppercase and lowercase letters, numbers, and symbols
A strong password is much more difficult for hackers to guess or crack.
58
When is it safe to accept a self-signed certificate?
Answer:
When you are connecting to a device on your local network, such as a router or a printer
In this case, you can be reasonably sure that you are connecting to the correct device.
59
Which network type is more prone to signal degradation over distance?
Answer:
Both b and c
Both copper cables and wireless signals lose strength over distance, although fiber optic cables are much less susceptible to this.
60
Which device would you use to segment a large LAN into smaller, more manageable parts?
Answer:
Router
A router can be used to create subnets, which are smaller logical divisions of a network, to improve performance and security.