Information and Communication Technology MCQ

821. What is the difference between a flowchart and pseudocode?

Correct Answer: Correct answer is: (C) A flowchart is a diagrammatic description of an algorithm whilst pseudocode is a textual description of an algorithm.

Exam Relevance: AP Computer Science, IB Computer Science, A-Level Computing

Difficulty: Easy

Concept notes: Flowcharts use graphical symbols to represent the steps of an algorithm, making it a visual tool. Pseudocode, on the other hand, uses a combination of natural language and programming constructs to describe the steps of an algorithm in a more structured, text-based format.

Common Mistakes: Students may confuse flowcharts with actual programming code or think that pseudocode is a specific programming language.

Explanations: A flowchart is a visual representation of an algorithm using standardized symbols and arrows to show the flow of control. Pseudocode, in contrast, is a textual representation that uses a mix of natural language and programming constructs to describe the logic of an algorithm. This distinction makes flowcharts diagrammatic and pseudocode textual.

Option Analysis:

Option A: Incorrect because pseudocode is not written in a specific programming language like Pascal or Java; it is a mix of natural language and programming constructs.
Option B: Incorrect because flowcharts are diagrammatic, not textual, and pseudocode is textual, not diagrammatic.
Option C: Correct because it accurately describes the nature of flowcharts and pseudocode.
Option D: Incorrect because flowcharts and pseudocode are different tools for representing algorithms.

Mnemonic: Flowchart = Diagram, Pseudocode = Text

822. In most Microsoft programs, what does 'alt+f4' do.....

Correct Answer: Correct answer is: (A) Ends the program.

Exam Relevance: Microsoft Office Specialist, CompTIA A+

Difficulty: Very Easy

Concept notes: The 'Alt+F4' key combination is a standard shortcut in Microsoft programs to close the active window or application.

Common Mistakes: Students may mistakenly believe 'Alt+F4' performs other functions such as running or modifying the program.

Explanations: In Microsoft programs, 'Alt+F4' is a widely recognized shortcut that immediately closes the active window or application. This function is consistent across many Microsoft applications, making it a reliable method to end a program.

Option Analysis:

Option A: Correct. 'Alt+F4' ends the program.
Option B: Incorrect. 'Alt+F4' does not run the program; it closes it.
Option C: Incorrect. 'Alt+F4' does not modify the program; it closes it.
Option D: Incorrect. 'Alt+F4' has a specific function in Microsoft programs.

823. Which of the following are advantages of using a zip file? (Choose two)

Correct Answer: Correct answer is: (D) Only (A) & (B).

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

Difficulty: Easy

Concept notes: Zip files are compressed files that reduce the size of the original files, making them smaller and quicker to transfer.

Common Mistakes: Students may mistakenly believe that zip files inherently provide password protection, which is not true unless specifically set up.

Explanations: Zip files reduce the size of the original files, which means they take up less hard drive space. Additionally, because they are smaller, they can be transferred more quickly over networks or the internet. However, zip files do not inherently prevent unauthorized access; they do not provide password protection unless configured to do so.

Option Analysis:

Option A: Zip files are indeed smaller, so they take up less hard drive space.
Option B: Zip files can be transferred more quickly due to their smaller size.
Option C: Zip files do not prevent unauthorized access unless password-protected.
Option D: Only (A) & (B) are correct.

824. What is meant by computer literacy?

Correct Answer: Correct answer is: (A) Knowing what a computer can and cannot do.

Exam Relevance: SAT, ACT, GED

Difficulty: Easy

Concept notes: Computer literacy refers to the ability to understand and use computers effectively.

Common Mistakes: Students may confuse computer literacy with the ability to write programs or assemble computers, which are more specialized skills.

Explanations: Computer literacy involves a foundational understanding of what computers can and cannot do, including basic operations, software usage, and digital communication. It does not necessarily require advanced programming skills or hardware assembly knowledge.

Option Analysis:

Option A: This is the correct definition of computer literacy. It encompasses the basic understanding of computer capabilities and limitations.
Option B: Writing computer programs is a specialized skill that goes beyond basic computer literacy.
Option C: Knowing computer-related vocabulary is part of computer literacy but does not fully encompass the concept.
Option D: Assembling computers is a technical skill that is not required for basic computer literacy.

825. In this computer science The term that refers to computers that provide resources toother computers in a network is:

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

Exam Relevance: CompTIA Network+, CISSP, CCNA

Difficulty: Easy

Concept notes: A server is a computer or system that provides resources, data, services, or programs to other computers, known as clients, over a network.

Common Mistakes: Students may confuse a server with a mainframe, which is a large and powerful computer used for bulk data processing, or with a platform, which refers to the hardware or software environment in which a program runs.

Explanations: In a network, a server is the central computer that provides resources to other computers. This aligns with the definition of the term "server" in computer science, making it the correct answer.

Option Analysis:

Option A: Correct. A server provides resources to other computers in a network.
Option B: Incorrect. A mainframe is a large computer used for bulk data processing, not specifically for providing network resources.
Option C: Incorrect. A platform refers to the hardware or software environment, not a resource provider in a network.
Option D: Incorrect. While "resource provider" is a general term that could apply, "server" is the specific term used in computer science for this role.

Mnemonic: S-P-R: Server Provides Resources

826. Which among the following has been standardized in the IEEE 802.3 specification?

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

Exam Relevance: CCNA, CompTIA Network+, IEEE certification exams

Difficulty: Easy

Concept notes: The IEEE 802.3 specification standardizes Ethernet, a widely used technology for wired local area networks (LANs).

Common Mistakes: Students may confuse Ethernet with other wireless standards like WiMAX or Bluetooth, which are not covered under the IEEE 802.3 specification.

Explanations: The IEEE 802.3 specification is specifically designed for Ethernet, which is a standard for wired local area networks. It defines the physical layer and data link layer specifications for Ethernet networks. Bluetooth and WiMAX are not covered under this specification, as they are different technologies with their own standards.

Option Analysis:

Option A: Bluetooth is a wireless technology standard for exchanging data over short distances, not covered by IEEE 802.3.
Option B: Ethernet is the correct answer as it is standardized in the IEEE 802.3 specification.
Option C: WiMAX is a wireless broadband technology, not covered by IEEE 802.3.
Option D: Not all of the above are standardized in IEEE 802.3; only Ethernet is.

Mnemonic: E for Ethernet, E for 802.3.

827. Data integrity

Correct Answer: Correct answer is: (A) Refers to maintaining the validity of data which can be compromised in a number of ways, e.g. by data entry errors, viruses, hardware malfunctions, etc. The risks can be minimised by security systems, backing up data and by having interfaces with built-in error traps.

Exam Relevance: CISSP, CISA, CompTIA Security+

Difficulty: Moderate

Concept notes: Data integrity is the maintenance of accuracy, completeness, and consistency of data over its entire lifecycle.

Common Mistakes: Students may confuse data integrity with data security, which focuses more on protecting data from unauthorized access rather than maintaining its accuracy and consistency.

Explanations: Data integrity ensures that data remains accurate and reliable throughout its lifecycle. It can be compromised by various factors such as data entry errors, viruses, and hardware malfunctions. To maintain data integrity, security systems can prevent unauthorized access, regular backups can restore data in case of loss, and interfaces with error traps can prevent incorrect data entry.

Option Analysis:

Option A: Correctly defines data integrity and the measures to maintain it.
Option B: Describes a data type used in Microsoft Access, not data integrity.
Option C: Describes a type of optical storage device, not data integrity.
Option D: Refers to a network, which is unrelated to data integrity.

828. A collection of complete programs, subroutines, and program modules that have already been developed, tested and documented to be used by programming projects.

Correct Answer: Correct answer is: (B) Program library.

Exam Relevance: ACM, IEEE, CompTIA

Difficulty: Easy

Concept notes: A program library is a collection of pre-written, tested, and documented code that can be reused in various programming projects.

Common Mistakes: Students may confuse a program library with a program counter, which is a hardware component that keeps track of the next instruction to be executed.

Explanations: A program library is a repository of complete programs, subroutines, and program modules that have already been developed, tested, and documented. These components can be reused in different programming projects, saving time and effort. This matches the description given in the question.

Option Analysis:

Option A: A program counter is a hardware component that keeps track of the next instruction to be executed in a computer's CPU. It is not a collection of code.
Option B: A program library is a collection of pre-written, tested, and documented code that can be reused in various programming projects. This matches the description in the question.
Option C: A programmer is a person who writes computer programs. It does not refer to a collection of code.
Option D: This option is not applicable as the correct answer is provided in the other options.

829. A(n) ....., which is one billionth of a second, is used by some manufacturers to state access times.

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

Exam Relevance: GRE, MCSE, CompTIA A+

Difficulty: Moderate

Concept notes: Ns stands for nanoseconds, which are units of time equal to one billionth of a second. This unit is commonly used in the context of computer hardware specifications, particularly for measuring access times in memory and storage devices.

Common Mistakes: Students may confuse nanoseconds (Ns) with other units of time such as milliseconds (Ms) or microseconds (μs), which are larger units.

Explanations: Ns stands for nanoseconds, which is a unit of time equal to one billionth of a second. In the context of computer hardware, particularly memory and storage devices, manufacturers often use nanoseconds to specify access times. This unit is precise enough to measure the very short durations involved in these operations.

Option Analysis:

Option A: Ns is the correct unit for nanoseconds, which is one billionth of a second.
Option B: Gs is not a standard unit for time and does not represent one billionth of a second.
Option C: Ms stands for milliseconds, which is one thousandth of a second, not one billionth.
Option D: Ts is not a standard unit for time and does not represent one billionth of a second.

Mnemonic: Nanoseconds, Notably Short, Ns

830. In Excel which symbol must all formula begin with?

Correct Answer: Correct answer is: (A) =

Exam Relevance: Microsoft Office Specialist, Excel certification exams

Difficulty: Very Easy

Concept notes: In Excel, all formulas must begin with the equals sign (=).

Common Mistakes: Students often forget that the equals sign is required to start a formula in Excel.

Explanations: In Excel, the equals sign (=) is used to indicate that a cell contains a formula or function. Without the equals sign, Excel will treat the input as text rather than a calculation. Therefore, all formulas in Excel must begin with the equals sign.

Option Analysis:

Option A: Correct. The equals sign (=) is the correct symbol to start a formula in Excel.
Option B: Incorrect. The plus sign (+) is used for addition within a formula but does not start a formula.
Option C: Incorrect. The opening parenthesis ( is used within formulas but does not start a formula.
Option D: Incorrect. The at symbol (@) is not used to start a formula in Excel.

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3 thoughts on “Information and Communication Technology MCQ - Set 83”

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 83”

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