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
431
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.
432
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.
433
The first email was sent in:
Answer:
1971
Ray Tomlinson sent the first email on the ARPANET in 1971.
434
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.
435
What is a "third-party cookie"?
Answer:
Both b and c
Third-party cookies are often used for advertising and tracking purposes.
436
IP addresses are converted to:
Answer:
Hierarchy of domain names
Domain names are human-readable versions mapped to IP addresses.
437
What is a "datagram"?
Answer:
Another name for a packet in a connectionless network
In the context of the IP protocol, which is connectionless, the packets are often referred to as datagrams.
438
What is "cybersquatting"?
Answer:
The practice of registering a domain name that is the same as, or confusingly similar to, a well-known trademark
Cybersquatters often try to sell the domain name to the trademark owner for a profit.
439
Which device can create Virtual LANs (VLANs)?
Answer:
Managed switch
VLANs are a feature of managed switches that allow you to segment a LAN into multiple logical networks.
440
A URL specifies the following: (i) Protocol used (ii) Domain name of server hosting web page (iii) Name of folder with required information (iv) Name of document formatted using HTML (v) Name of ISP
Answer:
i, ii, iii, iv
A URL consists of the protocol, domain, folder path, and document name; the ISP name is not part of the URL structure.