Information and Communication Technology MCQ

1221. A special kind of electric switch with low and high settings that can be used to represent numbers, words, pictures, ect.

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

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

Difficulty: Easy

Concept notes: Transistors are semiconductor devices that can act as switches with low and high settings, which can represent binary data (0s and 1s) used in computing.

Common Mistakes: Students may confuse transistors with bits, which are units of information rather than physical components.

Explanations: Transistors are fundamental components in digital electronics that can be used to represent binary data. They can switch between two states, typically referred to as "on" and "off," which correspond to the binary digits 1 and 0. This ability to switch between two states makes transistors ideal for representing numbers, words, and pictures in digital form.

Option Analysis:

Option A: Bits are units of information, not physical switches.
Option B: Software is a set of instructions for computers, not a physical switch.
Option C: Transistors are semiconductor devices that can act as switches with low and high settings.
Option D: This option is incorrect as transistors are the correct answer.

Mnemonic: Transistors Toggle, Transcribe, Transmit

1222. Which computer was considered the first electronic computer until 1973 when court invalidated the patent?

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

Exam Relevance: Computer Science, History of Technology, Patent Law

Difficulty: Moderate

Concept notes: ENIAC (Electronic Numerical Integrator and Computer) was considered the first electronic computer until 1973 when a court invalidated its patent.

Common Mistakes: Students may confuse ENIAC with other early computers like the Z3 or MARK I, which were also significant in the history of computing.

Explanations: ENIAC was a significant milestone in the history of computing, being one of the first fully electronic computers. It was developed during World War II and was operational in 1945. Until 1973, ENIAC was widely recognized as the first electronic computer. However, in 1973, a court invalidated the patent for ENIAC, recognizing the ABC (Atanasoff-Berry Computer) as the first electronic computer. Despite this, ENIAC remains a crucial part of computing history due to its scale and impact.

Option Analysis:

Option A: ENIAC was considered the first electronic computer until 1973 when its patent was invalidated.
Option B: MARK I was an early electromechanical computer, not electronic.
Option C: Z3 was an early computer but was not fully electronic.
Option D: ABC was recognized as the first electronic computer after the 1973 court ruling.

Mnemonic: ENIAC: Electronic Numerical Integrator and Computer, First until 1973.

1223. Which of the following Excel screen components can NOT be turned on or off?

Correct Answer: Correct answer is: (D) None of above.

Exam Relevance: Microsoft Office Specialist, CompTIA A+, Certified Administrative Professional

Difficulty: Easy

Concept notes: In Excel, all the mentioned screen components (Formula Bar, Status Bar, Tool Bar) can be turned on or off through the View tab or the Excel options menu.

Common Mistakes: Students might mistakenly believe that one of the components is permanently fixed and cannot be toggled.

Explanations: Excel allows users to customize their interface by turning on or off various screen components. The Formula Bar, Status Bar, and Tool Bar can all be toggled through the View tab or Excel options. Therefore, none of the listed components are permanently fixed and cannot be turned on or off.

Option Analysis:

Option A: The Formula Bar can be turned on or off.
Option B: The Status Bar can be turned on or off.
Option C: The Tool Bar can be turned on or off.
Option D: This option correctly states that none of the above components are permanently fixed.

1224. Which of the following refers to too much electricity and may cause a voltage surge.....

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

Exam Relevance: Physics exams, Electrical Engineering exams, Safety and Health exams

Difficulty: Easy

Concept notes: A spike refers to a sudden, brief increase in voltage that can damage electrical equipment.

Common Mistakes: Students may confuse a spike with a shock, which is a sudden flow of electricity through a person's body.

Explanations: A spike is a brief, excessive voltage surge that can occur in electrical systems. It is different from a shock, which involves a flow of electricity through a person. A virus is unrelated to electrical phenomena. Therefore, the correct term for too much electricity causing a voltage surge is a spike.

Option Analysis:

Option A: Shock refers to an electric current passing through a person, not a voltage surge.
Option B: Spike is the correct term for a sudden, brief increase in voltage.
Option C: Virus is unrelated to electrical phenomena and refers to malicious software.
Option D: None of these is incorrect as spike is the correct term.

Mnemonic: Spike = Short, Powerful Increase in Voltage

1225. The very top of the page in a document is known as.....

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

Exam Relevance: GED, SAT, ACT

Difficulty: Very Easy

Concept notes: The header is the topmost section of a document page, often used for titles, dates, or other identifying information.

Common Mistakes: Students may confuse the header with the footer, which is located at the bottom of the page.

Explanations: The header is defined as the topmost section of a document page. It is commonly used to display information such as the title of the document, the date, or the author's name. This section is distinct from the footer, which is located at the bottom of the page.

Option Analysis:

Option A: Correct. The header is the topmost section of a document page.
Option B: Incorrect. A tab stop is a setting in a word processor that defines where text will begin on a line, not a section of the page.
Option C: Incorrect. This option is not applicable as the header is the correct answer.
Option D: Incorrect. This option is not applicable as the header is the correct answer.

Mnemonic: Top of the page, think "Head" for Header.

1226. What is the maximum cable length for STP?

Correct Answer: Correct answer is: (C) 100 meters.

Exam Relevance: CCNA, CompTIA Network+, CIW Network Specialist

Difficulty: Moderate

Concept notes: Shielded Twisted Pair (STP) cables are designed to reduce electromagnetic interference and have a maximum recommended length of 100 meters for optimal performance.

Common Mistakes: Students often confuse the maximum length of STP cables with other types of cables, such as unshielded twisted pair (UTP) or coaxial cables, which have different length limitations.

Explanations: STP cables are used in structured cabling systems and are designed to minimize interference. The maximum length of 100 meters is a standard guideline to ensure reliable data transmission. This length is based on the cable's ability to maintain signal integrity over the distance, which is crucial for network performance.

Option Analysis:

Option A: 100 feet is incorrect because it is a shorter distance and does not align with the standard length for STP cables.
Option B: 150 feet is incorrect as it exceeds the recommended length for optimal performance of STP cables.
Option C: 100 meters is the correct length for optimal performance of STP cables.
Option D: 1000 meters is incorrect as it far exceeds the recommended length for STP cables.

1227. Which is an instant messenger that is used for chatting?

Correct Answer: Correct answer is: (A) Google Talk.

Exam Relevance: GRE, GMAT, IT Certification Exams

Difficulty: Easy

Concept notes: Google Talk is an instant messaging service that allows users to chat with each other in real-time.

Common Mistakes: Students may confuse Google Talk with other Google services like Google Search or Google Drive, which are not instant messaging platforms.

Explanations: Google Talk is an instant messaging service that enables users to send and receive text messages, voice messages, and video calls. It is designed specifically for real-time communication, making it a valid instant messaging tool.

Option Analysis:

Option A: Google Talk is an instant messaging service, which is correct.
Option B: AltaVista is a search engine, not an instant messaging service.
Option C: MAC is a brand of personal computers, not an instant messaging service.
Option D: Microsoft Office is a suite of productivity software, not an instant messaging service.

Mnemonic: G for Google, G for Gchat.

1228. IV Generation Computers contain.

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

Exam Relevance: Computer Science Fundamentals, Computer Architecture, Undergraduate Computer Science Exams

Difficulty: Easy

Concept notes: LSI stands for Large Scale Integration, which is a key feature of IV Generation Computers.

Common Mistakes: Students may confuse the generations of computers and their key features, leading to incorrect selection of options related to earlier generations.

Explanations: IV Generation Computers are characterized by the use of LSI (Large Scale Integration) technology. LSI allows for the integration of thousands of transistors on a single chip, significantly increasing the processing power and efficiency of these computers. The other options, Vaccum Tube and Transistor, are associated with earlier generations of computers (I and II generations respectively).

Option Analysis:

Option A: Correct. LSI is a key feature of IV Generation Computers.
Option B: Incorrect. Vaccum Tube is associated with the first generation of computers.
Option C: Incorrect. Transistor is associated with the second generation of computers.
Option D: Incorrect. This option suggests all of the above, which is not correct as only LSI is a feature of IV Generation Computers.

1229. Charles Babbage was awarded by Royal Society for his

Correct Answer: Correct answer is: (A) Difference Engine.

Exam Relevance: GRE, GATE, CSIR NET

Difficulty: Easy

Concept notes: Charles Babbage is known for his contributions to the development of mechanical computers. The Royal Society recognized his work on the Difference Engine, which was a mechanical calculator designed to tabulate polynomial functions.

Common Mistakes: Students may confuse the Difference Engine with the Analytic Engine, as both were significant contributions by Babbage. However, the Royal Society specifically awarded him for the Difference Engine.

Explanations: Charles Babbage was awarded by the Royal Society for his Difference Engine, a mechanical calculator designed to tabulate polynomial functions. This invention was a significant step towards the development of modern computing. The Analytic Engine, while also important, was not the focus of the Royal Society's award.

Option Analysis:

Option A: Correct. The Royal Society recognized Babbage for his work on the Difference Engine.
Option B: Incorrect. The Analytic Engine was not the focus of the Royal Society's award.
Option C: Incorrect. The binary system in the Analytic Engine was not the basis for the award.
Option D: Incorrect. While these concepts are part of Babbage's work, they were not the specific focus of the Royal Society's recognition.

Mnemonic: Difference Engine, Royal Society, Mechanical Calculator

1230. What is a low-level language?

Correct Answer: Correct answer is: (A) A programming language close to the computer's instruction set.

Exam Relevance: Computer Science, Programming Fundamentals, Software Engineering

Difficulty: Easy

Concept notes: Low-level languages are programming languages that are closer to the hardware and the computer's instruction set, making them more difficult for humans to read and write but more efficient for the computer to execute.

Common Mistakes: Students often confuse low-level languages with high-level languages, which are closer to human language and easier to understand.

Explanations: Low-level languages are designed to be close to the computer's instruction set, allowing for direct manipulation of hardware resources. This makes them more efficient for the computer to execute, but less intuitive for programmers. High-level languages, in contrast, are designed to be closer to human language, making them easier for programmers to write and understand, but less efficient for the computer to execute.

Option Analysis:

Option A: Correct. Low-level languages are close to the computer's instruction set.
Option B: Incorrect. This describes high-level languages, which are closer to human language.
Option C: Incorrect. Low-level languages are not typically used by beginners due to their complexity.
Option D: Incorrect. This is unrelated to programming languages.

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3 thoughts on “Information and Communication Technology MCQ - Set 123”

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 123”

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