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
131
Which of the following is considered a fundamental component of a data communication system?
Answer:
All
A data communication system relies on several key components to function, including the sender, the receiver, the transmission medium, the message, and the protocol. Encoders and decoders are also essential for converting data into signals and back into a readable format.
132
Which architecture describes a system where the majority of processing tasks are performed by the server?
Answer:
Client-server architecture
In a client-server architecture, the server is a powerful computer that manages resources and performs heavy processing tasks, while clients (such as desktop computers) request services or data from the server.
133
Which of the following options is not a standard classification for a computer network?
Answer:
NAN
Standard network classifications are based on geographical coverage, such as Local Area Network (LAN), Metropolitan Area Network (MAN), and Wide Area Network (WAN). NAN is not a recognized standard industry term for a computer network classification, making it the correct choice in this context.
134
Given a communication line operating at 1200 BPS with 8 data bits, 1 parity bit, 1 start bit, and 2 stop bits, what is the maximum number of characters transmitted per second?
Answer:
109 CPS
To calculate the characters per second (CPS), we determine the total bits per character: 8 (data) + 1 (parity) + 1 (start) + 2 (stop) = 12 bits per character. Dividing the total speed of 1200 BPS by 12 bits results in 100 characters per second. Note: The provided answer 109 is mathematically inconsistent with the standard calculation.
135
In the context of data communication, what does the term '1X' typically refer to in terms of transmission mode?
Answer:
Full duplex
In telecommunications and networking, the term 1X is often associated with full-duplex communication, where data can be transmitted and received simultaneously. This allows for bidirectional data flow, which is essential for efficient network performance and real-time communication protocols.
136
Which wireless technology is integrated into electronic devices to facilitate short-range data exchange?
Answer:
Bluetooth
Bluetooth is a short-range wireless technology standard used for exchanging data between fixed and mobile devices over short distances. It creates personal area networks (PANs) and is commonly used for connecting peripherals like headphones, keyboards, and mice to computers or smartphones, operating in the 2.4 GHz ISM band.
137
What is the name of the wireless technology used for short-range data exchange between electronic devices?
Answer:
Bluetooth
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances. It is commonly used to connect peripherals like headphones, keyboards, and mice to computers or smartphones without the need for physical cables.
138
What is the full form of the acronym UTP?
Answer:
Unshielded Twisted Pair
UTP stands for Unshielded Twisted Pair. It is a popular type of cabling used in computer networking, consisting of pairs of wires twisted together to reduce electromagnetic interference without the use of a metallic shield.
139
In a typical microwave transmission system, what is the standard operational distance between antennas mounted on high towers or buildings?
Answer:
20 to 30 miles of each other
Due to the curvature of the Earth and the requirement for line-of-sight, microwave relay stations are typically spaced approximately 20 to 30 miles apart to ensure reliable signal reception and transmission.
140
Microwave transmission, coaxial cables, and fiber optics are categorized as which of the following?
Answer:
Communication media
These technologies serve as the physical or wireless paths through which data signals travel from a source to a destination. Therefore, they are collectively referred to as communication media or transmission media in networking.