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
1
What does IP stand for in the context of computer networking?
Answer:
Internet Protocol
IP stands for Internet Protocol. It is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet.
2
X.25 standard defines:
Answer:
DTE/DCE interface
X.25 specifies the connection between terminal and communications equipment.
3
The mail server uses which protocol?
Answer:
POP
POP (Post Office Protocol) is a standard protocol used by local email clients to retrieve email from a remote server. SMTP is used for sending.
4
HTTPS stands for___________?
Answer:
Hypertext Transfer Protocol Secure
HTTPS stands for Hypertext Transfer Protocol Secure. It is an extension of HTTP used for secure communication over a computer network, and is widely used on the Internet. In HTTPS, the communication protocol is encrypted using Transport Layer Security (TLS) or, formerly, its predecessor, Secure Sockets Layer (SSL).
5
Which protocol defines how internet-connected computers exchange control and confirmation messages?
Answer:
Transmission Control Protocol
TCP is responsible for establishing connections and ensuring reliable data exchange, including acknowledgments and error correction.
6
Which transmission method uses start and stop bits to frame each byte?
Answer:
Asynchronous serial
In asynchronous serial transmission, each byte of data is framed by a start bit and one or more stop bits for synchronization.
7
In Bluetooth, which layer corresponds to the physical layer of the Internet model?
Answer:
Radio
The Bluetooth Radio layer specifies the details of the air interface, including frequency, modulation, and transmission power, similar to the OSI physical layer.
8
What protocol is used to access the World Wide Web?
Answer:
HTTP
Hypertext Transfer Protocol (HTTP) governs data exchange across web browsers and servers.
9
\_\_ control refers to methods used to limit the volume of data a sender can transmit before waiting for acknowledgment.
Answer:
Flow
Flow control is a mechanism that prevents a fast sender from overwhelming a slow receiver with too much data.
10
The Simplest Protocol and Stop-and-Wait Protocol are designed for \_\_ channels.
Answer:
Either B or C
These basic protocols operate under the ideal assumption of a noiseless, error-free channel where data frames are never lost or corrupted.