Computer Knowledge Practice Question and Answer

Q:

Which device is designed to send packets using package addresses?

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  • 1
    Specialty Hub
    Correct
    Wrong
  • 2
    switching hub
    Correct
    Wrong
  • 3
    Port Hub
    Correct
    Wrong
  • 4
    filtering hub
    Correct
    Wrong
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Answer : 2. "switching hub"
Explanation :

A switching hub, also known as a network switch, is designed to send packets using package addresses. A network switch operates at the data link layer of the OSI model and uses MAC addresses to forward data frames to specific devices within a local area network (LAN). Unlike a hub, which simply broadcasts data to all devices in the network, a switch intelligently forwards packets only to the device intended to receive the data, increasing network efficiency and reducing unnecessary network traffic.

Q:

Computer language FORTRAN is useful in which field?

837 0

  • 1
    business
    Correct
    Wrong
  • 2
    Drawing
    Correct
    Wrong
  • 3
    Science
    Correct
    Wrong
  • 4
    Commerce
    Correct
    Wrong
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Answer : 3. "Science"
Explanation :

FORTRAN (short for "Formula Translation") is a high-level programming language that is particularly well-suited for scientific and engineering applications. It was developed for numeric and scientific computing and is widely used in fields such as physics, engineering, mathematics, and other scientific disciplines. FORTRAN allows for efficient processing of mathematical and scientific computations, making it a popular choice for complex scientific simulations, mathematical modeling, and computational research.

Q:

Which is the fastest printer?

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  • 1
    Laser Printer
    Correct
    Wrong
  • 2
    Jet printer
    Correct
    Wrong
  • 3
    Thermal Printer
    Correct
    Wrong
  • 4
    Daisy wheel printer
    Correct
    Wrong
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Answer : 1. "Laser Printer"
Explanation :

Laser printers are generally known for their speed and efficiency, making them one of the fastest types of printers available for everyday office use. They use laser technology to print text and images, which allows for high-speed printing without compromising print quality. Laser printers are especially well-suited for printing large volumes of text documents quickly and are commonly used in office environments where fast and high-quality printing is required.


Q:

What is Oracle?

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  • 1
    an operating system
    Correct
    Wrong
  • 2
    word processor software
    Correct
    Wrong
  • 3
    Database software
    Correct
    Wrong
  • 4
    none of these
    Correct
    Wrong
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Answer : 3. "Database software"
Explanation :

Oracle is a multinational computer technology corporation that specializes in developing and marketing database software and technology, cloud-engineered systems, and enterprise software products. One of its primary offerings is the Oracle Database, which is a widely used relational database management system (RDBMS). Oracle Database is designed to handle large volumes of data and complex transactions, making it popular among enterprises for various applications, including online transaction processing (OLTP), data warehousing, and business intelligence.

Q:

What is the computer language COBOL useful for?

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  • 1
    Professional work
    Correct
    Wrong
  • 2
    Graphic work
    Correct
    Wrong
  • 3
    Scientific work
    Correct
    Wrong
  • 4
    none of these
    Correct
    Wrong
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Answer : 1. "Professional work"
Explanation :

COBOL (Common Business Oriented Language) is a high-level programming language primarily used for business, finance, and administrative systems within companies and governments. It is particularly useful for handling large-scale, data-centric applications in areas such as accounting, payroll, inventory management, and other business-related tasks. COBOL is known for its readability and ease of use, making it suitable for professionals working on applications that require extensive data processing and business logic. Despite being an older language, COBOL continues to be used in many legacy systems, especially in industries where stability and reliability are paramount.


Q:

Which language is called 'foundation stone' for teaching languages like FORTRAN, ALGOL, PASCAL etc.?

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  • 1
    BASIC
    Correct
    Wrong
  • 2
    COBOL
    Correct
    Wrong
  • 3
    FORTRAN
    Correct
    Wrong
  • 4
    none of these
    Correct
    Wrong
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Answer : 1. "BASIC"
Explanation :

The language considered the "foundation stone" for teaching languages like FORTRAN, ALGOL, PASCAL, and many others is ALGOL (Algorithmic Language). ALGOL was a significant early programming language that influenced the design of subsequent programming languages, providing important concepts and structures used in the development of languages like FORTRAN, PASCAL, and C. While BASIC is also a widely used beginner-friendly programming language, ALGOL had a substantial impact on the development of programming language theory and design.


Q:

What is the key combination to move down one paragraph in MS PowerPoint? 

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  • 1
    down arrow
    Correct
    Wrong
  • 2
    shift+down arrow
    Correct
    Wrong
  • 3
    ctrl+down arrow
    Correct
    Wrong
  • 4
    Alt+Down Arrow
    Correct
    Wrong
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Answer : 3. "ctrl+down arrow "
Explanation :

Actually, in MS PowerPoint (and most other word processing applications), the key combination to move down one paragraph is "Enter". Pressing the "Enter" key moves the cursor to the next paragraph. If you want to move the cursor down one line within the same paragraph, you can use the "Down Arrow" key. There isn't a specific default key combination to move down one paragraph in PowerPoint; it's more about using the "Enter" key to start a new paragraph.

Q:

Which command is used to remove a table from the database in SQL?

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  • 1
    DELETE TABLE
    Correct
    Wrong
  • 2
    DROP TABLE
    Correct
    Wrong
  • 3
    ERASE TABLE
    Correct
    Wrong
  • 4
    UNATTACH TABLE
    Correct
    Wrong
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Answer : 2. "DROP TABLE "
Explanation :

In SQL, the DROP TABLE command is used to remove a table from the database. When you execute DROP TABLE, it deletes the table along with all its data, indexes, triggers, constraints, and permissions. It should be used with caution as it permanently removes the table and all associated objects from the database.


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