Computer Science - IT MCQs
Topic Notes: Computer Science - IT
<p>MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.</p>
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
91
What term describes the capacity of a connection to transmit information over a specific period?
Answer:
Bandwidth
Bandwidth refers to the maximum rate of data transfer across a given path. It measures how much information can be transmitted over a network connection in a set amount of time, usually expressed in bits per second.
92
Which technique is employed to transmit high-volume data, such as voice and video, over long distances using modulation?
Answer:
Broadband
Broadband is the standard technique for high-capacity, long-distance communication. By using modulation, it can handle the high bandwidth requirements of multimedia content like voice and video, which baseband signaling cannot support effectively over long distances.
93
Which of the following options is classified as a type of guided transmission media?
Answer:
Fiber optic cable
Guided media, also known as bounded media, refers to physical paths through which signals are directed, such as copper wires or fiber optic cables. Fiber optic cable uses light pulses to transmit data within a physical glass or plastic core.
94
What is the term for the information intended to be transmitted between locations?
Answer:
Data
In the context of communication systems, data refers to the information, facts, or concepts that are being communicated. This information is encoded into signals to be sent from a source to a destination over a communication channel.
95
What type of conductive material is commonly used to transmit electrical signals in networking?
Answer:
Twisted-pair
Twisted-pair cabling consists of pairs of insulated copper wires twisted together to reduce electromagnetic interference. It is the most common medium used for local area network (LAN) connections due to its cost-effectiveness and ease of installation.
96
Which of the following is NOT considered a type of communication media?
Answer:
Satellite-based, Microwave
While satellite and microwave are transmission technologies, they are often classified as transmission systems or methods rather than physical media cables. This question highlights a distinction in networking terminology.
97
What term describes a device that establishes a network connection without utilizing physical cabling?
Answer:
none of these
A device that connects to a network without the use of cables is typically referred to as a wireless device. Since 'wireless' is not listed among the provided options, 'none of these' is the correct choice.
98
What term defines a communication link between two endpoints that allows data to travel in both directions simultaneously?
Answer:
Duplex
A full-duplex connection allows data to be transmitted and received in both directions at the same time. This is a fundamental concept in networking, distinguishing it from half-duplex, where communication can only occur in one direction at any given moment.
99
How is a specific computer uniquely identified when connected to the internet?
Answer:
IP address
An IP address (Internet Protocol address) is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. It serves as the identifier for the device's location on the network.
100
What is the full form of the telecommunications term PSTN?
Answer:
Public Switched Telephone Network
PSTN stands for Public Switched Telephone Network. It refers to the aggregate of the world's circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication.