Information and Communication Technology MCQ

421. A precise series of instructions written in a computer language that tells the computer what to do and how to do it. Programs are also called software or applications.

Correct Answer: Correct answer is: (A) Program.

Exam Relevance: AP Computer Science, SAT Subject Test in Computer Science

Difficulty: Easy

Concept notes: A program is a set of instructions written in a computer language that directs the computer to perform specific tasks.

Common Mistakes: Students may confuse a program with a programming language, which is the tool used to write the program.

Explanations: A program is a precise series of instructions written in a computer language that tells the computer what to do and how to do it. Programs are also called software or applications. This definition aligns with the description provided in the question, making "Program" the correct answer.

Option Analysis:

Option A: Correct. A program is a set of instructions written in a computer language that directs the computer to perform specific tasks.
Option B: Incorrect. A programming language is the tool used to write the program, not the program itself.
Option C: Incorrect. Ethernet is a networking technology used to connect devices, not a series of instructions for a computer.
Option D: Incorrect. The correct answer is provided in the options.

422. A file ..... is a utility that performs functions related to file management.

Correct Answer: Correct answer is: (B) Manager.

Exam Relevance: GRE, GMAT, IT Certification Exams

Difficulty: Easy

Concept notes: A file manager is a utility that performs functions related to file management.

Common Mistakes: Students may confuse a file manager with other utilities like a monitor or a scanner, which do not perform file management functions.

Explanations: A file manager is a utility designed to perform functions related to file management, such as organizing, moving, copying, and deleting files. This makes it the correct choice for the given question.

Option Analysis:

Option A: A monitor is a display device and does not perform file management functions.
Option B: A manager, specifically a file manager, is a utility that performs file management functions.
Option C: A scanner is a device used for digitizing documents and does not perform file management functions.
Option D: A controller is typically associated with hardware control and does not perform file management functions.

423. Which one of the following software applications would be the most appropriate for performing numerical and statistical calculations?

Correct Answer: Correct answer is: (D) Spreadsheet.

Exam Relevance: GRE, GMAT, CPA, CFA

Difficulty: Easy

Concept notes: Spreadsheets are designed for numerical and statistical calculations, making them the most appropriate choice for such tasks.

Common Mistakes: Students may mistakenly choose a database or document processor, as these tools are also used for data management and text processing, but they lack the specialized functions for numerical and statistical analysis.

Explanations: Spreadsheets are specifically designed to handle numerical data and perform complex calculations, including statistical analysis. They offer a wide range of built-in functions and formulas that are essential for numerical and statistical tasks. Other options like databases, document processors, and graphics packages are not primarily designed for these types of calculations.

Option Analysis:

Option A: Databases are used for storing and managing large sets of structured data but are not optimized for numerical and statistical calculations.
Option B: Document processors are designed for text processing and formatting, not for numerical or statistical analysis.
Option C: Graphics packages are used for creating and editing visual content, not for numerical or statistical calculations.
Option D: Spreadsheets are the most appropriate for numerical and statistical calculations due to their built-in functions and formulas.

424. A reliability& flow control technique where the source sends one packet starts a timer and waits for an acknowledgment before sending a new packet is called.....

Correct Answer: Correct answer is: (A) Positive Acknowledgement Retransmission (PAR).

Exam Relevance: Computer Networks, Data Communication, Network Fundamentals

Difficulty: Easy

Concept notes: Positive Acknowledgement Retransmission (PAR) is a technique used in data communication to ensure reliable transmission. It involves the sender transmitting a packet, starting a timer, and waiting for an acknowledgment from the receiver before sending the next packet.

Common Mistakes: Students may confuse PAR with other flow control mechanisms like sliding window or stop-and-wait, which also involve acknowledgments but have different mechanisms.

Explanations: Positive Acknowledgement Retransmission (PAR) is the correct answer because it describes a technique where the source sends one packet, starts a timer, and waits for an acknowledgment before sending a new packet. This ensures that each packet is successfully received before the next one is sent, providing reliability and flow control.

Option Analysis:

Option A: Correct. PAR fits the description given in the question.
Option B: Incorrect. Routing is a different concept that involves determining the path for data to travel across a network.
Option C: Incorrect. This option is not applicable as only one technique is described in the question.
Option D: Incorrect. This option is not applicable as one of the given options is correct.

425. The brain of the computer that processes info and carries out commands.

Correct Answer: Correct answer is: (D) CPU.

Exam Relevance: AP Computer Science Principles, SAT Subject Test in Computer Science

Difficulty: Easy

Concept notes: The CPU, or Central Processing Unit, is the primary component of a computer responsible for processing information and executing commands.

Common Mistakes: Students may confuse the CPU with other components like the motherboard, RAM, or hard drive, which have different functions.

Explanations: The CPU is the brain of the computer, responsible for processing data and executing instructions. It performs calculations, manages data flow, and controls the operation of other components. The other options, such as the motherboard, RAM, and hard drive, have different roles in the computer system.

Option Analysis:

Option A: The motherboard is the main circuit board of a computer, but it does not process information or carry out commands.
Option B: RAM, or Random Access Memory, stores data temporarily for quick access but does not process information or execute commands.
Option C: The hard drive stores data permanently but does not process information or carry out commands.
Option D: The CPU processes information and carries out commands, making it the correct answer.

Mnemonic: CPU: Central Processing Unit, the brain that computes.

426. What word is missing from the line below?SELECT *..... CUSTOMER;

Correct Answer: Correct answer is: (A) FROM.

Exam Relevance: SQL Server Certification, Oracle Certification, MySQL Certification

Difficulty: Easy

Concept notes: The SQL statement requires a FROM clause to specify the table from which to retrieve data.

Common Mistakes: Students often forget the FROM clause, leading to syntax errors.

Explanations: In SQL, the SELECT statement is used to retrieve data from a database. The FROM clause is essential as it specifies the table from which the data is to be retrieved. Without the FROM clause, the SQL statement is incomplete and will result in a syntax error.

Option Analysis:

Option A: FROM is the correct clause to specify the table from which to retrieve data.
Option B: WHERE is used to filter rows based on a condition, not to specify the table.
Option C: SELECT is already present in the statement and is used to specify the columns to retrieve.
Option D: ORDER BY is used to sort the result set, not to specify the table.

Mnemonic: Remember: "FROM" is the "Foundation" of your data retrieval.

427. A single channel is shared by multiple signals by .....

Correct Answer: Correct answer is: (C) Multiplexing.

Exam Relevance: GATE, ECE, EE, Telecommunications Engineering

Difficulty: Moderate

Concept notes: Multiplexing is a technique used to share a single communication channel among multiple signals or data streams.

Common Mistakes: Students may confuse multiplexing with other signal processing techniques like modulation or switching, which do not directly address the sharing of a single channel among multiple signals.

Explanations: Multiplexing allows multiple signals to be transmitted over a single channel by dividing the channel into multiple sub-channels or time slots. This technique is essential in communication systems where efficient use of bandwidth is critical. Analog modulation and digital modulation are methods of encoding information onto a carrier signal, while switching is a method of connecting different communication channels. These methods do not inherently address the sharing of a single channel among multiple signals.

Option Analysis:

Option A: Analog modulation is a method of encoding information onto a carrier signal but does not address the sharing of a single channel among multiple signals.
Option B: Digital modulation is also a method of encoding information onto a carrier signal but does not address the sharing of a single channel among multiple signals.
Option C: Multiplexing is the correct answer as it is the technique used to share a single communication channel among multiple signals or data streams.
Option D: Switching is a method of connecting different communication channels but does not inherently address the sharing of a single channel among multiple signals.

Mnemonic: Mnemonic: MUX for Multiple Signals on a Single Channel

428. This is used to type in text.

Correct Answer: Correct answer is: (C) Keyboard.

Exam Relevance: Computer Basics, IT Literacy, Digital Literacy

Difficulty: Very Easy

Concept notes: A keyboard is a device used to input text and commands into a computer.

Common Mistakes: Students might confuse a keyboard with a touchpad, which is used for navigating the cursor.

Explanations: A keyboard is specifically designed for typing in text. It contains keys for letters, numbers, and symbols, making it the primary tool for text input on computers.

Option Analysis:

Option A: A touchpad is used for moving the cursor and performing gestures, not for typing text.
Option B: A joystick is typically used for controlling games or other applications that require directional input, not for typing text.
Option C: A keyboard is the device used for typing in text.
Option D: A scanner is used to digitize physical documents or images, not for typing text.

Mnemonic: Type with Keys, Not Pads or Scans.

429. Large computer system typically uses:

Correct Answer: Correct answer is: (A) Line printers.

Exam Relevance: Computer Science, Information Technology, Systems Engineering

Difficulty: Moderate

Concept notes: Line printers are commonly used in large computer systems due to their high-speed printing capabilities and ability to handle large volumes of data.

Common Mistakes: Students may confuse line printers with other types of printers, such as ink-jet or dot-matrix printers, which are more commonly used in smaller systems.

Explanations: Line printers are designed for high-speed printing and are capable of printing an entire line of text at once, making them ideal for large computer systems that require rapid and continuous printing of large volumes of data. This makes them more suitable for environments where speed and volume are critical, such as in mainframe and server environments.

Option Analysis:

Option A: Line printers are the correct choice for large computer systems due to their high-speed printing capabilities and ability to handle large volumes of data.
Option B: Ink-jet printers are typically used for color printing and are not suitable for high-volume, high-speed printing required in large computer systems.
Option C: Dot-matrix printers are slower and less efficient for high-volume printing compared to line printers, making them less suitable for large computer systems.
Option D: Daisy wheel printers are slower and less efficient for high-volume printing compared to line printers, making them less suitable for large computer systems.

Mnemonic: LIPS - Line Printers for Instant Speed

430. Which is device that interconnect two or more network, enabling data transfer to be made between them.....

Correct Answer: Correct answer is: (B) Gateway.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: A gateway is a device that interconnects two or more networks, enabling data transfer between them.

Common Mistakes: Students may confuse a gateway with other network devices like routers or switches, which have different primary functions.

Explanations: A gateway is a network device that serves as an entry point to another network. It is used to connect networks that use different protocols, enabling data transfer between them. This makes it the correct choice for a device that interconnects two or more networks.

Option Analysis:

Option A: A joystick is an input device used for controlling video games or other applications, not for interconnecting networks.
Option B: A gateway is the correct device for interconnecting two or more networks, enabling data transfer between them.
Option C: A path is a route taken by data packets in a network, not a device.
Option D: This option is incorrect as a gateway is the correct device for interconnecting networks.

Mnemonic: GATE: Gateway Acts To Enable

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3 thoughts on “Information and Communication Technology MCQ - Set 43”

Peter Ross April 8, 2020

The MCQ is quite entertaining and will help in increasing knowledge also.
Reyaz Ahmad khan December 26, 2020

plz help me in regard with current Affairs
Eshita Nandpal April 11, 2021

Plz give make a part of unit wise

3 thoughts on “Information and Communication Technology MCQ - Set 43”

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