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
The primary provider of \_\_ is the local cable TV company.
Answer:
Broadband
Cable companies are major providers of broadband internet access, typically delivered over coaxial cable networks.
2
Arrangement of Computer is called?
Answer:
Topology
In networking, topology refers to the physical or logical arrangement of nodes (like computers and switches) and connections within a network. Examples include bus, star, ring, and mesh topologies.
3
The receive equalizer reduces signal delay distortion using:
Answer:
Tapped delay lines
Tapped delay lines are used in equalizers to correct delay distortion.
4
Which type of media carries electromagnetic waves without a physical conductor?
Answer:
Unguided
Unguided media, or wireless media (e.g., radio waves, microwaves), transport electromagnetic waves without using a physical conductor.
5
What is the term for a network topology that combines multiple topologies?
Answer:
Hybrid
A hybrid topology is a network topology that integrates two or more different standard topologies, such as a star-bus or star-ring topology. This is done to leverage the advantages of different topology types in a single network.
6
What does MODEM stand for?
Answer:
Modulator And Demodulator
MODEM is a portmanteau of Modulator-Demodulator. It is a hardware device that converts digital data from a computer into an analog signal that can be transmitted over a telephone line (modulation) and converts incoming analog signals back into digital data (demodulation).
7
What is an advantage of fiber optic data transmission?
Answer:
All of the above
Fiber optics provide quick data rates, are difficult to tap, and have low noise.
8
What device helps improve mobile signals in low-coverage areas?
Answer:
Booster
Signal boosters amplify weak cellular signals for better connectivity.
9
To increase network length and preserve signal quality, you should use a:
Answer:
Repeater
A repeater regenerates signals, allowing the network to cover longer distances without degradation.
10
What method is commonly used to establish a connection with a remote computer over a phone line?
Answer:
Dialup
Dial-up is a form of Internet access that uses the facilities of the public switched telephone network (PSTN) to establish a connection to an Internet service provider (ISP) by dialing a telephone number on a conventional telephone line. This process requires a modem.