Information and Communication Technology MCQ

1231. Physical security is concerned with protecting computer hardware from human tampering& natural disasters and..... security is concerned with protecting software from unauthorized tampering or damage.

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

Exam Relevance: CISSP, CompTIA Security+, CISA

Difficulty: Easy

Concept notes: Physical security focuses on protecting hardware from physical threats, while data security focuses on protecting software and information from unauthorized access or damage.

Common Mistakes: Students may confuse data security with other types of security, such as network security or internet security, which are more focused on protecting against digital threats rather than protecting software and information.

Explanations: Physical security is concerned with safeguarding the physical components of a computer system, such as servers, workstations, and storage devices, from theft, damage, or unauthorized access. Data security, on the other hand, is concerned with protecting the software and information stored on these devices from unauthorized access, tampering, or damage. This includes measures such as encryption, access controls, and backups to ensure the integrity and confidentiality of the data.

Option Analysis:

Option A: Data security is the correct answer as it deals with protecting software and information from unauthorized tampering or damage.
Option B: Internet security is incorrect as it focuses on protecting against digital threats over the internet, not software protection.
Option C: Metaphysical security is not a recognized term in the context of computer security.
Option D: None of these is incorrect as data security is a valid and recognized form of security.

1232. A trial balance is a.....

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

Exam Relevance: CPA, ACCA, CMA

Difficulty: Easy

Concept notes: A trial balance is a list of all the accounts in the ledger with their respective debit or credit balances.

Common Mistakes: Students may confuse a trial balance with a ledger, journal, or individual account.

Explanations: A trial balance is a list that summarizes all the accounts in the ledger, showing their balances. It is used to check the equality of debit and credit balances and to prepare financial statements. It is not a ledger, journal, or individual account.

Option Analysis:

Option A: A ledger is a collection of accounts, not a list of balances.
Option B: A journal is a record of transactions, not a list of balances.
Option C: An account is a record of transactions for a specific item, not a list of balances.
Option D: A trial balance is indeed a list of all accounts with their balances.

1233. To access a device over the Internet, you must use its unique IP address. Which network protocol enables you to associate a text-based name with that IP address?

Correct Answer: Correct answer is: (A) Domain Name System (DNS).

Exam Relevance: AP Computer Science Principles, CompTIA Network+, CCNA

Difficulty: Easy

Concept notes: The Domain Name System (DNS) is a hierarchical and distributed naming system for computers, services, or other resources connected to the Internet or a private network. It translates domain names into IP addresses.

Common Mistakes: Students may confuse DNS with DHCP, which is used for assigning IP addresses to devices on a network, rather than translating domain names to IP addresses.

Explanations: DNS is the protocol that associates text-based names with IP addresses. When you type a website's name into a browser, DNS servers translate that name into the IP address needed to connect to the website's server. This makes it easier for users to remember website addresses.

Option Analysis:

Option A: Correct. DNS translates domain names into IP addresses.
Option B: Incorrect. DHCP is used for assigning IP addresses to devices, not for translating domain names.
Option C: Incorrect. HTTP is a protocol used for transferring web pages and other content over the Internet, not for translating domain names.
Option D: Incorrect. TCP/IP is a suite of protocols for transmitting data over the Internet, not for translating domain names.

Mnemonic: DNS: Domain Names to Numbers

1234. The device used to carry digital data on analogue lines is called as.....?

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

Exam Relevance: Computer Networks, Telecommunications, Data Communication

Difficulty: Easy

Concept notes: A modem is a device that modulates and demodulates signals to enable digital data to be transmitted over analog communication lines.

Common Mistakes: Students may confuse a modem with a multiplexer, which combines multiple signals into one for transmission over a single line, rather than converting digital data to analog signals.

Explanations: A modem is the correct answer because it is specifically designed to convert digital data into analog signals for transmission over analog lines, and then convert the analog signals back into digital data at the receiving end. This process is essential for transmitting digital data over traditional telephone lines or other analog communication channels.

Option Analysis:

Option A: Correct. A modem is used to convert digital data into analog signals and vice versa.
Option B: Incorrect. A multiplexer combines multiple signals into one for transmission, but does not convert digital data to analog.
Option C: Incorrect. A modulator only converts digital data to analog signals, but does not handle the reverse process.
Option D: Incorrect. A demodulator only converts analog signals back to digital data, but does not handle the initial conversion from digital to analog.

Mnemonic: Modem: Modulate and Demodulate

1235. Which of these is Not an early computer?

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

Exam Relevance: AP Computer Science, SAT Subject Tests, High School Computer Science Exams

Difficulty: Easy

Concept notes: NASA is an acronym for the National Aeronautics and Space Administration, which is a government agency and not an early computer.

Common Mistakes: Students may confuse NASA with early computing systems due to its historical involvement in space technology and computing.

Explanations: NASA is a government agency established in 1958 to oversee U.S. space exploration and aeronautics research. It is not an early computer. SAGE, UNIVAC, and ENIAC are all examples of early computing systems.

Option Analysis:

Option A: NASA is a government agency, not an early computer.
Option B: SAGE (Semi-Automatic Ground Environment) was an early computer system used for air defense.
Option C: UNIVAC (Universal Automatic Computer) was one of the first commercial computers.
Option D: ENIAC (Electronic Numerical Integrator and Computer) was one of the earliest electronic computers.

Mnemonic: NASA: Not A Single Acronym for a computer

1236. Icon is used to provide

Correct Answer: Correct answer is: (C) A symbolic representation of any system.

Exam Relevance: AP Computer Science Principles, IB Computer Science

Difficulty: Easy

Concept notes: Icons are graphical symbols used to represent various systems, applications, or functions in a user interface.

Common Mistakes: Students may confuse icons with interactive elements or window titles, which are different aspects of user interface design.

Explanations: Icons are primarily used to provide a visual, symbolic representation of systems, applications, or functions. They are not designed for direct interaction with the user, nor do they represent the name of a window. Therefore, the correct answer is that icons provide a symbolic representation of any system.

Option Analysis:

Option A: Icons do not provide direct interaction with the user; they are visual symbols.
Option B: The name of a window is typically displayed in the title bar, not represented by an icon.
Option C: Icons are used to symbolically represent systems, applications, or functions.
Option D: This option is incorrect as icons do have a specific function.

1237. These devices convert the output from a computer into sound; digital data is converted.

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Speakers are devices that convert digital data from a computer into sound waves.

Common Mistakes: Students may confuse speakers with other output devices like printers, which do not convert digital data into sound.

Explanations: Speakers are designed to take digital data from a computer and convert it into sound waves that can be heard. This process involves the digital data being processed by the computer's sound card and then sent to the speakers, which convert the digital signals into sound waves. Other options like 3D printers, dot matrix printers, and regular printers do not have this capability as they are designed to produce physical output rather than sound.

Option Analysis:

Option A: Correct. Speakers convert digital data into sound waves.
Option B: Incorrect. 3D printers create physical objects, not sound.
Option C: Incorrect. Dot matrix printers print text and images on paper, not sound.
Option D: Incorrect. Printers produce physical output, not sound.

Mnemonic: SPEAK - Sound Producing Equipment And Kinetic

1238. IC chips used in computers are made of

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

Exam Relevance: SAT, ACT, AP Physics, A-Level Physics

Difficulty: Easy

Concept notes: IC chips, or integrated circuits, are primarily made from silicon due to its semiconductor properties.

Common Mistakes: Students may confuse silicon with other metals or materials used in electronics, such as silver or lead.

Explanations: Silicon is used in IC chips because it is a semiconductor material that can be easily doped to create p-type and n-type materials, which are essential for the creation of transistors and other electronic components. This property makes silicon ideal for the fabrication of IC chips.

Option Analysis:

Option A: Correct. Silicon is the primary material used in the fabrication of IC chips due to its semiconductor properties.
Option B: Incorrect. Chromium is a metal and does not have the semiconductor properties required for IC chips.
Option C: Incorrect. Lead is a metal and is not used in the fabrication of IC chips.
Option D: Incorrect. Silver is a metal and does not have the semiconductor properties required for IC chips.

1239. In a database record, When the user changes existing values then it is called.....

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Editing refers to the process of making changes to existing data in a database record.

Common Mistakes: Students may confuse editing with other database operations such as inserting or deleting records.

Explanations: When a user changes existing values in a database record, the process is called editing. This is because the user is modifying the current data rather than adding new data or removing it.

Option Analysis:

Option A: Correct. Editing is the process of changing existing data.
Option B: Incorrect. Mining refers to extracting useful information from large datasets, not changing existing values.
Option C: Incorrect. Re-storing is not a standard term in database operations and does not accurately describe the process of changing existing values.
Option D: Incorrect. The correct term for changing existing values is editing.

Mnemonic: E for Editing, E for Existing.

1240. Which term means that multiple users can work on the same document at the same time?

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Collaborating refers to the process where multiple users can work on the same document simultaneously.

Common Mistakes: Students may confuse collaborating with editing, which only refers to making changes to a document, not necessarily by multiple users at the same time.

Explanations: Collaborating means that multiple users can work on the same document at the same time, which is the correct term for this scenario. Editing refers to making changes to a document, but it does not necessarily involve multiple users working simultaneously. Saving and formatting are actions that can be performed on a document but do not involve multiple users working together.

Option Analysis:

Option A: Correct. Collaborating means multiple users can work on the same document at the same time.
Option B: Incorrect. Editing refers to making changes to a document, but it does not involve multiple users working simultaneously.
Option C: Incorrect. Saving refers to storing changes to a document, not working on it with others.
Option D: Incorrect. Formatting refers to the layout and design of a document, not working on it with others.

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3 thoughts on “Information and Communication Technology MCQ - Set 124”

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 124”

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