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
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.
52
What is a "guest network" on a wireless router?
Answer:
A network for visitors that is separate from the main network
A guest network provides internet access to visitors without giving them access to the main network's files and devices.
53
Which describes a file server best?
Answer:
Manages files and is shared by network users
A file server stores and manages data for networked users and devices.
54
Which network type connects a user's smartphone to their wireless earbuds?
Answer:
PAN
The short-range wireless connection between a smartphone and earbuds is a Personal Area Network (PAN).
55
Which device operates at the Physical layer (Layer 1) of the OSI model?
Answer:
Hub
A hub is a simple device that operates at the Physical layer, simply repeating all incoming signals to all connected ports.
56
In a client-server network, what is the role of the client?
Answer:
To request services from the server
The client is the computer that requests resources or services (like files, web pages, or printing) from the server.
57
What is a major disadvantage of the client-server model?
Answer:
There is a single point of failure (the server).
If the central server goes down, the entire network may become unusable.
58
Which model is better for collaboration on a single, shared document?
Answer:
Client-server model, with the document stored on the server
Centralized storage on a server (like with Google Docs) ensures that everyone is working on the same, most up-to-date version of the document.
59
Which of the following is NOT a type of computer network?
Answer:
NAN
NAN is not a standard acronym for a type of computer network. LAN, WAN, and PAN are all standard network types.
60
What is a "connection-oriented" protocol?
Answer:
A protocol that establishes a connection (a "handshake") before sending data
TCP is a connection-oriented protocol. It establishes a reliable session between the sender and receiver before any data is transmitted.