Information and Communication Technology MCQ

871. ..... is a tool that searches for and removes unnecessary files.

Correct Answer: Correct answer is: (A) Disk cleanup.

Exam Relevance: Microsoft Office Specialist, CompTIA A+

Difficulty: Easy

Concept notes: Disk cleanup is a utility that searches for and removes unnecessary files from a computer's hard drive to free up space and improve performance.

Common Mistakes: Students may confuse disk cleanup with disk defragmenter, which organizes files to improve access speed rather than removing unnecessary files.

Explanations: Disk cleanup is designed to identify and remove temporary files, system cache, and other unnecessary data that can accumulate over time. This utility helps in freeing up disk space and improving system performance by removing files that are no longer needed.

Option Analysis:

Option A: Correct. Disk cleanup is a tool that searches for and removes unnecessary files.
Option B: Incorrect. Disk defragmenter organizes files to improve access speed, not remove unnecessary files.
Option C: Incorrect. This option is not correct as Disk cleanup is the correct answer.
Option D: Incorrect. This option is not correct as Disk cleanup is the correct answer.

872. An operating system version designed for use with a media center PC is Microsoft Windows XP

Correct Answer: Correct answer is: (B) Media center edition.

Exam Relevance: IT Essentials, CompTIA A+, Microsoft Certified: Windows Operating System Fundamentals

Difficulty: Easy

Concept notes: Microsoft Windows XP Media Center Edition is a specialized version of Windows XP designed for media center PCs, which are computers that are used primarily for entertainment purposes, such as playing music, videos, and photos.

Common Mistakes: Students may confuse the Media Center Edition with the Home Edition, which is a more general-purpose version of Windows XP.

Explanations: The Media Center Edition of Windows XP is specifically tailored for media center PCs, which are designed to function as entertainment hubs. This version includes features and interfaces optimized for media playback and management, making it the correct choice for the given question.

Option Analysis:

Option A: Home edition is a general-purpose version of Windows XP, not specifically designed for media center PCs.
Option B: Media center edition is the correct choice as it is designed for media center PCs.
Option C: Tablet PC edition is designed for tablet devices, not media center PCs.
Option D: None of the above is incorrect because the Media Center Edition is a valid option.

Mnemonic: Media Center Edition: MCE for Media Center Entertainment

873. Which of the following is the shortcut key to format number in Scientific format in MS-Excel?

Correct Answer: Correct answer is: (D) Ctrl + Shift + 6.

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

Difficulty: Easy

Concept notes: In Microsoft Excel, the shortcut key combination Ctrl + Shift + 6 is used to format numbers in Scientific format.

Common Mistakes: Students often confuse the various shortcut keys for different number formats in Excel.

Explanations: The correct answer is Ctrl + Shift + 6 because this specific key combination is designed to apply the Scientific format to selected cells in Excel. This format displays numbers in scientific notation, which is useful for very large or very small numbers.

Option Analysis:

Option A: Ctrl + Shift + 4 is not the correct key combination for Scientific format.
Option B: Ctrl + Shift + 3 is not the correct key combination for Scientific format.
Option C: Ctrl + Shift + 5 is not the correct key combination for Scientific format.
Option D: Ctrl + Shift + 6 is the correct key combination for Scientific format.

Mnemonic: Six for Science: Ctrl + Shift + 6 for Scientific format.

874. Shortcut cut command for save

Correct Answer: Correct answer is: (A) Ctrl+s.

Exam Relevance: Computer proficiency tests, IT certification exams, competitive coding exams

Difficulty: Very Easy

Concept notes: The shortcut Ctrl+s is universally recognized for saving files in most software applications.

Common Mistakes: Students often confuse Ctrl+s with other common shortcuts like Ctrl+v (paste) or Ctrl+d (bookmark or duplicate).

Explanations: Ctrl+s is the standard keyboard shortcut for saving files in most applications. It is designed to be a quick and efficient way to save work without having to navigate through menus. This shortcut is widely used across different operating systems and software, making it a fundamental skill for anyone working with digital documents.

Option Analysis:

Option A: Correct. Ctrl+s is the standard shortcut for saving files.
Option B: Incorrect. Ctrl+v is the shortcut for paste, not save.
Option C: Incorrect. Ctrl+d is typically used for bookmarking or duplicating, not saving.
Option D: Incorrect. Ctrl+b is often used for bolding text, not saving.

Mnemonic: Save: S for Save, S for Shortcut.

875. What is the Super Computer developed in India

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

Exam Relevance: GATE, UPSC, SSC, CSIR NET

Difficulty: Easy

Concept notes: The PARAM series of supercomputers was developed in India by the Centre for Development of Advanced Computing (C-DAC).

Common Mistakes: Students may confuse CRAY with PARAM, as CRAY is also a well-known supercomputer brand, but it was not developed in India.

Explanations: PARAM is the correct answer because it is the name of the supercomputer series developed in India. CRAY, on the other hand, is a brand of supercomputers developed by Cray Inc., which is an American company.

Option Analysis:

Option A: CRAY is a brand of supercomputers developed by an American company, not in India.
Option B: PARAM is the correct answer as it is the name of the supercomputer series developed in India.
Option C: Both A and B is incorrect because CRAY is not a supercomputer developed in India.
Option D: None of these is incorrect because PARAM is the correct answer.

876. A reflective marker that indicates the end of the usable tape is

Correct Answer: Correct answer is: (B) End-of-tape.

Exam Relevance: IT Essentials, Computer Science Exams

Difficulty: Easy

Concept notes: The end-of-tape marker is a reflective marker used to indicate the end of the usable tape in magnetic tape storage systems.

Common Mistakes: Students may confuse the end-of-tape marker with other types of markers or signals used in data storage systems.

Explanations: The end-of-tape marker is a reflective marker that is placed at the end of the usable tape to signal the end of the tape. This marker helps prevent the tape from being overwound and ensures that the tape drive knows when it has reached the end of the usable tape.

Option Analysis:

Option A: End user is not a marker but refers to the person using the tape system.
Option B: End-of-tape is the correct term for the reflective marker indicating the end of the usable tape.
Option C: Optical mark reader is a device used to read marks on paper, not a marker on tape.
Option D: FAX is a communication device and not related to tape markers.

877. Kikutaro is the network administrator for his company. He is in charge of supervising multiple LANs. Which network hardware device can he use to connect the LANs together, and also use as a firewall?

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

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Moderate

Concept notes: A router is a network hardware device that can connect multiple LANs together and also function as a firewall.

Common Mistakes: Students may confuse a router with a switch or a bridge, which do not have the capability to act as a firewall.

Explanations: A router is capable of connecting multiple LANs by routing data packets between them. Additionally, routers often include firewall capabilities to protect the network from unauthorized access. A bridge and a switch are primarily used for connecting devices within a single LAN and do not have firewall functionalities. A hub is a simple device that broadcasts data to all connected devices and does not have the capability to connect multiple LANs or act as a firewall.

Option Analysis:

Option A: A router can connect multiple LANs and also function as a firewall.
Option B: A bridge connects two LANs but does not have firewall capabilities.
Option C: A switch connects devices within a single LAN and does not have firewall capabilities.
Option D: A hub broadcasts data to all connected devices and does not have the capability to connect multiple LANs or act as a firewall.

Mnemonic: Routers Route and Protect (RRP)

878. What two statements are true about using a cloud service to store backups? (Choose two)

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

Exam Relevance: CCNA, CISSP, CompTIA A+

Difficulty: Moderate

Concept notes: The correct answer involves understanding the practical aspects of using a cloud service for backups.

Common Mistakes: Students may mistakenly believe that cloud services are only useful for large amounts of data, or that transferring data to a cloud service is as fast as transferring to an external hard drive.

Explanations: Cloud services require an internet connection to store backups, making option A true. Transferring large files to a cloud service is generally slower than transferring them to an external hard drive due to network limitations, making option B true. Option C is incorrect because cloud services can be useful for any amount of data, not just large amounts.

Option Analysis:

Option A: True, as the computer must be connected to the Internet to upload backups to a cloud service.
Option B: True, as transferring large files to a cloud service is generally slower due to network bandwidth limitations.
Option C: False, as cloud services can be useful for any amount of data, not just large amounts.
Option D: True, as it correctly identifies options A and B as the correct statements.

Mnemonic: Clouds need internet, slow like a snail.

879. What is the term that refers to an ad hidden inside software that you downloaded from an internet site.....

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

Exam Relevance: CISSP, CompTIA Security+, CEH

Difficulty: Easy

Concept notes: Adware is a type of software that displays advertisements on a user's computer, often without their consent. It is commonly bundled with other software downloaded from the internet.

Common Mistakes: Students may confuse adware with other types of malware, such as spyware or viruses, which have different primary functions.

Explanations: Adware is the correct term for advertisements hidden within software downloaded from the internet. It is designed to generate revenue for the software developer by displaying ads to the user. The other options do not fit this description: Phish refers to phishing attacks, Cookie refers to small data files stored on a user's device, and None of these is incorrect as adware is the correct term.

Option Analysis:

Option A: Phish refers to phishing attacks, which are fraudulent attempts to obtain sensitive information. This is not related to hidden advertisements.
Option B: Cookie refers to small data files stored on a user's device to track browsing activity. This is not related to hidden advertisements.
Option C: Adware is the correct term for advertisements hidden within software downloaded from the internet.
Option D: None of these is incorrect as adware is the correct term.

Mnemonic: A for Advertisements, A for Adware.

880. Which uses magnetic fields?

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Hard disk drives (HDDs) use magnetic fields to store and retrieve data.

Common Mistakes: Students may confuse HDDs with SSDs, which do not use magnetic fields.

Explanations: HDDs store data on spinning platters coated with magnetic material. Magnetic fields are used to write data by aligning the magnetic particles on the platters and to read data by detecting the orientation of these particles. This makes HDDs distinct from other storage devices like USB memory, CD-ROMs, and RAM, which do not rely on magnetic fields for data storage and retrieval.

Option Analysis:

Option A: USB memory uses flash memory technology, not magnetic fields.
Option B: HDDs use magnetic fields to store and retrieve data.
Option C: CD-ROMs use laser technology to read data from a reflective surface, not magnetic fields.
Option D: RAM uses electrical charges to store data, not magnetic fields.

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3 thoughts on “Information and Communication Technology MCQ - Set 88”

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 88”

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