Class 8 computer BLE model question

 

BLE Model Question (Solved)

Issued By CDC 2071

 

Time: 1:30 Hrs	Full marks: 50
Subject: Computer	Pass marks: 20

 

Candidates are required to answer in their own words as far as possible. Credit will be given to originally, not to rote learning.

 

All questions are compulsory

Group "A"

 

Very Short Answer Questions (10×1=10)

1) Who is known as father of computer?

Ans: The father of computer science is Charles Babbage.

 

2) What is the name of first electro-mechanical computer?

Ans: Mark-I is the first electro-mechanical computer.

 

3) Which network is known as network of networks?

Ans: Internet is known as network of networks.

 

4) What do you called the first page of website?

Ans: First page of website is known as Homepage.

 

5) In which number system do the digital computer works.

Ans: In binary number system the digital computer works.

 

6) How many numbers in binary number system? Write it.

Ans: There are two numbers in binary number system. They are 0 and 1.

 

7) Write down ay two photo editing software.

Ans: Adobe In Design and CorelDraw are the two photo editing software.

 

8) What is multimedia?

Ans: Multimedia is the combination of text, graphics, animation, audio and video.

 

9) Write the full name:

 i. WWW: World Wide Web

ii. GUI: Graphical User Interface    

iii. UNIVAC: Universal Automatic Computer

 iv. Ms-Word: Microsoft Word

Group "B"

Short Answer Questions    7×4=28

1) What is an I.P.O. cycle? Describe with figure.

Ans: The IPO Cycle is termed as Input-Processing-Output cycle. A computer receives data as input, processes it, stores it and then produces output.

This Input-Process-Output (I - P - O) cycle is represented in the following figure:

 Input: The devices that allows data and instructions to be entered in a computer (such as keyboard, mouse, scanner)

Process: The computer performs useful operations by manipulating the data in many ways. This manipulation is called processing.

Output: The devices that allows information to be represented (i.e., given: - out) to the user, such as display screen or printer.

 

2) List out the components of Ms-Excel.

Ans: Following are the components of MS-Excel.

Microsoft Excel is the spreadsheet application used to work with texts and numbers and organize information. Following are the components of MS-Excel.

i) Workbook

ii) Row headings

iii) Column headings

iv) Name box

v) Cell

vi) Formula bar

vii) Sheet tabs and navigation buttons

viii) Worksheets

ix) Cells

x) Quick Access Toolbar

 

 

3) Write down the any five provisions of cyber ethics.

Ans: Following are the provision of cyber ethics.

i) Do not spread malware and computer virus.

ii) Do not cyber bully.

iii) Do not plagiarize.

iv) Do not break into someone else’s computer

v) Do not use someone else’s password without permission.

vi) Do not use internet for spreading illegal information.

 

 

4) List out the devices requirement to connect the internet.

Ans: Following are the devices required to connect the internet.

i) A Computer.

ii) Modem and Telephone Line

iii) Router

iv) An Internet Browser (Software) and Software

v) An account with an Internet Service Provider (ISP)

 

5) Write the features of page layout.

Ans: Following are the features of page layout software.

i) Easy to work with text and paragraphs.

ii) Effective way to work with graphics and picture.

iii) Easy to set different types of page format.

iv) Easy to work with columns.

v) You can set the page number, header and footer.

vi) You can use page layout software for website.

vii) Easy to publish the book.

viii) Easy to design newspaper and magazine.

 

6) Write short notes on:

i. Photoshop:

Photoshop is a photo modifying and raster image design software which permits users to create, edit, and manage various photos as well as virtual art. It also allows creating and editing raster pictures with multiple layers and importing the snap shots in numerous report formats. Photoshop is advanced by adobe systems for each home windows and macos.

 

ii. Adobe InDesign

Indesign is software for creating and enhancing web page designing and format association device used for arranging the contents in making posters, brochures, magazines, newspapers, books, displays, and ebooks. It may also publish illustrations, graphs, tables, and other expert usages.

 

7. a. Convert decimal number into binary addition

i. 75    

ii. 100

    b. Perform the following binary addition.

i. 101+111     

ii. 111+100

 

Group "C"

Long Answer Questions (2×6=12)

1) What is flowchart? Draw the symbols used in flowchart and write its work.

Ans: Diagrammatical representation of a problem is known as flowchart.

Following are the different symbols of flowchart with their functions.

 

2) What is an operating system? Write its types and describe in brief.

Ans: Operating system is software that acts as an interface between the user and the computer hardware. The main purpose of the operating system is to make the computer system easy to use and the computer hardware efficient. The operating system performs basic tasks, such as receiving keyboard input, processing instructions, and sending output to the screen. Examples: Windows, MS-DOS, Linux, Unix, Mac etc.

Following are the types of operating system.

i) Mobile Operating System

The mobile OS controls mobile devices and the design supports wireless communication and mobile applications. It has in-built support for mobile multimedia formats. Tablet PCs and smartphones use mobile operating systems.

 ii) Network Operating system

Network operating systems are systems that run on a server and manage all network functions. They allow user to share various resources of computer system like files, applications, printers, security, and other network functions over a small network of computers, such as a LAN as a private network.

 iii) Distributed operating system

An operating system that manages a group of independent computers and makes them look like a computer is called a distributed operating system. The development of computer networks that can be interconnected and communicated with each other has given rise to distributed computers.

 iv) Character User interface (CUI) operating system

CUI operating system is a text-based operating system that is used to interact with software or files by entering commands for specific tasks. The command line operating system uses only the keyboard to enter commands. DOS and UNIX are the examples of CUI based operating system.

Also Read: Basic Level (Class 8) Final Examination 2078

 v) Graphical User Interface (GUI) operating system

An operating system interface in graphical mode instead of a mouse-based operating system, where the user performs tasks or operations without typing commands from the keyboard. Files or icons can be opened or closed by clicking the mouse button. Window is the best example of GUI based operating system

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