Information and Communication Technology MCQ

1101. Which of the following computer is not invented by J.P. Eckert and John Mauchly?

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

Exam Relevance: CS101, Computer Architecture, History of Computing

Difficulty: Moderate

Concept notes: EDSAC was not invented by J.P. Eckert and John Mauchly. It was developed by Maurice Wilkes and his team at the University of Cambridge.

Common Mistakes: Students may confuse the inventors of early computers, as many were developed around the same time and by different teams.

Explanations: J.P. Eckert and John Mauchly are known for inventing the ENIAC, EDVAC, and UNIVAC. EDSAC, on the other hand, was developed by Maurice Wilkes and his team at the University of Cambridge. This makes EDSAC the correct answer as it was not invented by Eckert and Mauchly.

Option Analysis:

Option A: ENIAC was invented by J.P. Eckert and John Mauchly.
Option B: EDVAC was also invented by J.P. Eckert and John Mauchly.
Option C: UNIVAC was invented by J.P. Eckert and John Mauchly.
Option D: EDSAC was not invented by J.P. Eckert and John Mauchly, but by Maurice Wilkes and his team.

Mnemonic: E for Eckert and Mauchly, EDSAC for Wilkes.

1102. What is a constant?

Correct Answer: Correct answer is: (A) Data values that stay the same every time a program is executed.

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

Difficulty: Easy

Concept notes: A constant is a value that remains unchanged throughout the execution of a program.

Common Mistakes: Students may confuse constants with variables, which can change their values during program execution.

Explanations: A constant is defined as a data value that does not change during the execution of a program. This means that every time the program runs, the value of the constant remains the same. This is in contrast to variables, which can hold different values at different points in the program.

Option Analysis:

Option A: Correct. Constants are data values that remain unchanged during program execution.
Option B: Incorrect. A variable is a data value that can change during program execution.
Option C: Incorrect. A series of characters is a string, not a constant.
Option D: Incorrect. A data value that can change is a variable, not a constant.

1103. A character is represented in EBCDIC by.....

Correct Answer: Correct answer is: (B) Eight bits.

Exam Relevance: Computer Science Exams, IBM Certification Exams

Difficulty: Easy

Concept notes: EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8-bit character encoding used primarily in IBM mainframe and IBM midrange computer operating systems.

Common Mistakes: Students may confuse EBCDIC with ASCII, which also uses 8 bits but is more commonly used in modern computing systems.

Explanations: EBCDIC is an 8-bit character encoding scheme, meaning each character is represented by a unique combination of 8 bits. This encoding is used in IBM mainframe and midrange systems, and each character requires exactly 8 bits to be represented.

Option Analysis:

Option A: Four bits is incorrect because EBCDIC uses 8 bits to represent a character.
Option B: Eight bits is correct as EBCDIC uses 8 bits to represent a character.
Option C: Sixteen bits is incorrect because EBCDIC uses 8 bits, not 16 bits, to represent a character.
Option D: None of the above is incorrect because 8 bits is the correct representation for EBCDIC.

Mnemonic: EBCDIC Eight Bits, IBM's Code

1104. When the Language bar is....., it means that you do not see it on the screen but it will be displayed the next time you start your computer.

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

Exam Relevance: Computer Science, Information Technology, Digital Literacy

Difficulty: Easy

Concept notes: The Language bar can be hidden from view but remains available for use upon restarting the computer.

Common Mistakes: Students may confuse "hidden" with "closed" or "minimized," thinking the Language bar is permanently removed or not accessible.

Explanations: When the Language bar is hidden, it is not visible on the screen but remains stored in the system settings. This means it will reappear automatically the next time the computer is started, ensuring that the user can still access it without needing to manually restore or reopen it.

Option Analysis:

Option A: "Restored" implies the Language bar is brought back to its previous state, which is not the case when it is hidden.
Option B: "Hidden" correctly describes the state where the Language bar is not visible but will reappear upon restarting the computer.
Option C: "Minimized" suggests the Language bar is reduced in size but still visible, which is not the case when it is hidden.
Option D: "Closed" implies the Language bar is permanently removed, which is incorrect as it will reappear upon restarting the computer.

1105. The data controller is

Correct Answer: Correct answer is: (C) A person or company who decides how personal data will be stored or processed.

Exam Relevance: GCSE Computer Science, A-Level Computer Science, GDPR Compliance Exams

Difficulty: Moderate

Concept notes: The data controller is the entity that determines the purposes and means of processing personal data.

Common Mistakes: Students may confuse the data controller with the data processor, who actually performs the data processing on behalf of the controller.

Explanations: The data controller is responsible for making decisions about how personal data is stored and processed. This includes determining the purposes for which the data is collected and the methods used to process it. The data controller is ultimately accountable for compliance with data protection laws and regulations.

Option Analysis:

Option A: This describes a data subject, not a data controller.
Option B: This describes a data processor, not a data controller.
Option C: This correctly defines a data controller.
Option D: An accountant is not specifically related to data processing decisions.

Mnemonic: Data Controller: "Decides Data Destiny"

1106. A database component that contains descriptive information about the data stored in the physical data store is called.....

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

Exam Relevance: Database Management Systems, Computer Science Exams, Information Systems Exams

Difficulty: Easy

Concept notes: A schema in a database is a collection of definitions that describe the structure of the data, including tables, fields, relationships, and constraints.

Common Mistakes: Students may confuse a schema with a table, thinking that a table alone contains all the necessary descriptive information.

Explanations: A schema is the correct answer because it is the component that contains the descriptive information about the data stored in the physical data store. It defines the structure and organization of the data, including the tables, fields, and relationships. A table, on the other hand, is a specific part of the schema that holds the actual data.

Option Analysis:

Option A: Correct. A schema contains the descriptive information about the data stored in the physical data store.
Option B: Incorrect. A table is a part of the schema that holds the actual data, not the descriptive information.
Option C: Incorrect. The schema is the correct answer, not none of the above.
Option D: Incorrect. The schema is the correct answer, not all of the above.

Mnemonic: Schema: Structure, Metadata, Architecture

1107. Which one is not an input device?

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Very Easy

Concept notes: Input devices are hardware components that allow users to enter data or commands into a computer. Speakers, on the other hand, are output devices that convert digital signals into sound for the user to hear.

Common Mistakes: Students may confuse speakers with input devices because they are part of the computer hardware and are often used alongside other devices like keyboards and mice.

Explanations: Speakers are not input devices because they do not provide data or commands to the computer. Instead, they receive audio signals from the computer and convert them into sound. Input devices, such as keyboards and mice, are used to send data or commands to the computer.

Option Analysis:

Option A: Keyboard is an input device used to enter text and commands into a computer.
Option B: Mouse is an input device used to control the cursor and interact with the graphical user interface.
Option C: Speaker is an output device used to produce sound from the computer.
Option D: Scanner is an input device used to digitize images and documents.

1108. A technique used to reduce the speed mismatch between slow speed I/O devices and fast CPU is called

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

Exam Relevance: Operating Systems, Computer Architecture, System Programming

Difficulty: Easy

Concept notes: Spooling is a technique used to manage the speed mismatch between slow I/O devices and a fast CPU by temporarily storing data in a buffer.

Common Mistakes: Students may confuse spooling with other memory management techniques like paging or segmentation, which are not directly related to I/O speed mismatch.

Explanations: Spooling is a technique that allows a fast CPU to send data to a buffer (spool file) instead of directly to a slow I/O device. The I/O device then processes the data from the buffer at its own speed. This technique effectively reduces the speed mismatch between the CPU and the I/O device, allowing the CPU to continue executing other tasks while the I/O device processes the data.

Option Analysis:

Option A: Spooling is the correct answer as it is a technique used to manage the speed mismatch between slow I/O devices and a fast CPU.
Option B: Paging is a memory management technique that divides memory into fixed-size blocks called pages, which is not related to managing I/O speed mismatch.
Option C: Segmentation is another memory management technique that divides memory into variable-sized segments, which is also not related to managing I/O speed mismatch.
Option D: This option is incorrect as Spooling is the correct technique for managing the speed mismatch between slow I/O devices and a fast CPU.

Mnemonic: SPOOL - Speeds Processing Of Output and Input

1109. Software that translates and executes a high level language program one line at a time is known as a?

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

Exam Relevance: GRE, TOEFL, Programming Competitions

Difficulty: Easy

Concept notes: An interpreter is a software that translates and executes a high-level language program one line at a time.

Common Mistakes: Students often confuse interpreters with compilers, which translate the entire program at once before execution.

Explanations: An interpreter translates and executes a high-level language program one line at a time. This means that the interpreter reads the source code, translates each line into machine code, and then executes it immediately. This process is repeated for each line of the program. This is in contrast to a compiler, which translates the entire program into machine code before execution.

Option Analysis:

Option A: A compiler translates the entire program into machine code before execution, not one line at a time.
Option B: An interpreter translates and executes a high-level language program one line at a time, making it the correct answer.
Option C: An assembler translates assembly language into machine code, not high-level language.
Option D: An executor is not a standard term in this context; it does not describe the process of translating and executing code.

1110. Produces output in the form of solid objects.

Correct Answer: Correct answer is: (D) A 3D printer.

Exam Relevance: GRE, GMAT, Engineering Entrance Exams

Difficulty: Easy

Concept notes: A 3D printer is a device that produces physical objects from digital designs by adding material layer by layer.

Common Mistakes: Students may confuse a 3D printer with other types of printers that produce only 2D outputs, such as inkjet or laser printers.

Explanations: A 3D printer is specifically designed to create solid objects by building them up layer by layer from a digital model. This process, known as additive manufacturing, results in tangible, three-dimensional products. Other options like an interpreter, compiler, and numeric keypad do not produce solid objects.

Option Analysis:

Option A: An interpreter is a program that translates and executes code line by line, not a device that produces solid objects.
Option B: A compiler is a program that translates source code into machine code, not a device that produces solid objects.
Option C: A numeric keypad is a device used for inputting numbers, not for producing solid objects.
Option D: A 3D printer is a device that produces solid objects by adding material layer by layer, making it the correct answer.

Mnemonic: 3D prints, not 2D prints.

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3 thoughts on “Information and Communication Technology MCQ - Set 111”

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 111”

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