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Computer Awareness Mixed Quiz: Set 12

  • 20 questions
  • 20 minutes
  • Difficulty: Medium
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About this quiz

Set 12 of the Computer Awareness mixed quiz has 20 multiple-choice questions from 10 different topics of the subject: MS PowerPoint, CPU, Motherboard and Computer Architecture, Internet and Email and more. 8 of them were asked in real previous-year papers. A topic quiz checks one chapter; this set revises the whole subject at once, the way an exam paper does, where the next question can come from any chapter. Every question carries an explanation of why the correct option is right and why the others are wrong. Keep to the timer, read the explanations at the end, and go back to the notes of any topic where you slipped.

Questions in this quiz

20 questions with answers and explanations

Q3.Computer AwarenessHard

What is the default port number of HTTPS?

  1. A.21
  2. B.80
  3. C.110
  4. D.443
Show answer
Correct answer: D. 443

HTTPS is HTTP wrapped in encryption, and web servers listen for it on port 443. When an address begins with https, the browser opens a secure channel on that port, and the padlock shown beside the address means the traffic on it is coded.

Q4.Computer AwarenessAsked in: RRB JE · 29 Aug 2019Medium

What is the full form of EBCDIC?

  1. A.Extended Binary Control Decimal Interchange Code
  2. B.Enhanced Binary Control Data Interchange Code
  3. C.Extended Binary Coded Decimal Interchange Code
  4. D.Enhanced Binary Coded Data Integration Code
Show answer
Correct answer: C. Extended Binary Coded Decimal Interchange Code

EBCDIC is an 8-bit character encoding scheme developed by IBM in 1963 for its mainframe and midrange computers. Because it uses 8 bits for each character it can represent 256 different characters, twice as many as the 7-bit ASCII code, which handles 128.

Q6.Computer AwarenessAsked in: RRB JE · 30 Aug 2019Easy

Which of the following communication modes supports two-way traffic, but in only one direction at a time?

  1. A.Simplex
  2. B.Half-duplex
  3. C.Three-quarters duplex
  4. D.All of these
Show answer
Correct answer: B. Half-duplex

Data can travel between two devices in three modes. In half-duplex mode both devices can send and receive, but only one of them may transmit at any given moment, so the traffic takes turns; a walkie-talkie is the standard example, and older hubs and CB radio worked the same way.

Q8.Computer AwarenessAsked in: RRB NTPC · 06 Jun, 2025, Shift 2Medium

Consider a hierarchical file system. If a user attempts to delete a non-empty directory using a standard 'delete directory' command without any recursive options, what is the most likely outcome?

  1. A.The operating system will automatically delete all files and subdirectories within it.
  2. B.Only the directory structure will be removed, leaving the files and subdirectories orphaned.
  3. C.The operating system will prompt the user for confirmation to delete each item within the directory.
  4. D.The operating system will return an error indicating that the directory is not empty
Show answer
Correct answer: D. The operating system will return an error indicating that the directory is not empty

The plain remove-directory command is built to delete an empty folder only. In Windows it is rmdir, also written rd, and in Linux it is rmdir; both stop with a message such as "The directory is not empty" when anything is still inside.

Q9.Computer AwarenessHard

In which view of MS PowerPoint should you work if you want the title font and the background of every slide in the presentation to change at once?

  1. A.Normal View
  2. B.Slide Sorter View
  3. C.Outline View
  4. D.Slide Master View
Show answer
Correct answer: D. Slide Master View

The slide master holds the formatting that every slide built on it inherits — title font, body font, bullet style, background, colour scheme and the position of a logo — so one edit there updates the whole deck.

Q10.Computer AwarenessAsked in: RRB JE · 01 Sep 2019, Shift 2Medium

In an E-R diagram, multivalued attributes are represented by-

  1. A.Rectangle
  2. B.Dashed ellipse
  3. C.Double ellipse
  4. D.Diamond
Show answer
Correct answer: C. Double ellipse

In an entity relationship diagram each symbol has a fixed meaning, and an attribute that can hold more than one value for the same entity, such as a person's several phone numbers, is drawn as a double ellipse.

Q14.Computer AwarenessAsked in: Rajasthan · RSSB Informatics Assistant 2018 OfficialEasy

Use of internet to connect a wide variety of devices, machines and sensors for empowering brick and mortar stores by giving them the same access to data that online stores have is a facility falls under which of the following technologies?

  1. A.Artificial Intelligence
  2. B.Deep Learning
  3. C.Machine Learning
  4. D.Internet of Thing
Show answer
Correct answer: D. Internet of Thing

The Internet of Things means giving everyday objects — machines, sensors, meters, shelves, vehicles — an address on the internet so that they can report what they sense and be controlled from a distance.

Q16.Computer AwarenessAsked in: Rajasthan · 9 Sept 2018Medium

National Digital Library of India is a project of which one of the following ministries?

  1. A.Ministry of Finance
  2. B.Ministry of Education, Science and Technology
  3. C.Ministry of Information Technology
  4. D.Ministry of Education
Show answer
Correct answer: D. Ministry of Education

The National Digital Library of India is a single window that brings together lakhs of learning resources, from school books to research papers, and lets a student search them free of cost in many Indian languages.

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