CBSE SOLUTIONS-2025-26
CLASS-9
UNIT-III-ICT Skills-I
Chapter-3 Basic Computer Operations
A. Fill in the blanks.
1.
.........................controls and co-ordinates the computer's hardware and
software and it is the backbone of a computer.
Answer: System Software
2. The programs written in
English language is called a.................... program or code.
Answer: Source
3.
......................translates each line of program as it goes through the
program and produce the object code.
Answer: Interpreter
4. If the original file is
crashed, damaged or corrupt, ................. is utilized and the
backup files can be stored in CD,DVD.
Answer: Backup file
5.......................consists of programs that
direct computers to perform specific tasks.
Answer: Application software
B. Write (T) for true and (F)
for false statements.
1. Compiler is a type of
software, which translates source program written in high-level language into
machine language.
Answer: T
2. Utility programs are often
provided as a part of operating system, although they may be bought separately.
Answer: T
3. Backup utilities are used
to scan for computer viruses among files and folders.
Answer: F
4. File Explorer was called
Windows Explorer in Windows 7 and earlier versions.
Answer: T
5. Operating system is not
required on some computer.
Answer: F
C. Choose the correct answer.
1. Which utility can compress
or uncompress the contents of a disk thus increasing the capacity of the disk?
(a) Disk compression
(b) Disk defragmenter
(c) Backup utility
(d) Virus scanner
Answer: Disk compression
2. Which utility divides the
large file into pieces and stores in different locations on the disk?
(a) Disk compression
(b) Disk defragmenter
(c) Backup utility
(d) Virus scanner
Answer: Disk defragmenter
3. What is a piece of
information and it is referred by its file name?
(a) Folder
(b) File
(c) Operating system
(d) Software
Answer: File
4. A file name can have up to
...... characters including a period (.) and file extension up to .....
characters.
(a) 256; 8
(b) 255; 5
(c) 255; 8
(d) 244; 6
Answer: 255;8
5. Which pane is on the left
side of the File Explorer window and the folders are arranged like a tree
structure?
(a) Navigation Pane
(b) Preview pane
(c) Notification pane
(d) Right pane
Answer: Navigation Pane
D. Answer the following (short
answer) questions.
1. Why operating system is the
most important software?
Answer: System software controls and co-ordinates the computer's hardware and software. It is the backbone of a computer. Operating system is the most important software because of the following reasons:
1. Interface between user and hardware.
2. Manages hardware resources
3. Controls software execution
4. File and data management
5. Ensures security and access control.
6. Multitasking and process management
7. Networking
8. Provides a platform for Applications
2. Briefly describe the types
of system software.
Answer: Types of system software:
1. Operating System(OS): Manages hardware and software resources. Provides a user interface and runs applications.
2. Device Drivers: Allow the operating system to communicate with hardware devices.
3. Utility Programs: Maintian and optimize the computer system. Tasks include antivirus scanning, disk cleanup, and file management.
4. Firmware: Software permanently stored in a device's ROM. Controls hardware functions at a basic level.
5. Language Translators: Convert programming code into machine code. Types- compilers, interpreters and assemblers.
3. Briefly describe the types
of application software.
Answer: Types of application software:
1. General purpose application software: Examples- MS Word, MS Excel, MS PowerPoint etc.
2. Customized Application Software: Developed for specific user or organization needs.
3. Mobile Applications: Designed for smartphones and tablets. Available through app stores.
4. Business software: Helps in running business operations. Example- CRM, ERP.
5. Multimedia software: Used to create, play, edit multimedia files.
4. Define the terms: file,
folder
Answer:
File: A file is a collection of data or information stored on a computer. It can contain text, images, videso, software or any type of content.
Folder: A folder is used to organize and store multiple files or other folders. It helps keep files neatly arranged and easy to find.
5. How can you delete a
folder?
Answer: Steps to delete folder on windows:
1. Right-click the folder you want to delete.
2. Select Delete from the menu.
3. The folder will move to the recycle bin.
4. To permanently delete it, righ click the recycle bin and select Empty recycle bin.
E. Answer the following (long
answer) questions.
1. What is the difference
between drive and folder?
Answer:
Drive: A storage location on a computer or device. It stores all type of data. Example- C: drive, D: drive, USB drive etc. It is a higher level storage unit.
Folder: A container used to organize files. It stores groups related files or folders. Example- Document, Pictures etc.
2. Write the steps to view
large icons in a folder.
Answer: Steps to view large icons in a folder:
1. Open the folder where you want to change the icon view.
2. On the top menu bar, click on view.
3. A drop-down or ribbon will appear.
4. Select large icons from the list.
5. The folder will now display files and folders as large icons.
3. Write down the steps to
copy files from one folder to another.
Answer: Steps to copy files from one folder to another:
1. Open the folder that contains the file you want to copy.
2. Right click on the file you want to copy.
3. Click on copy from the context menu.
4. Now, open the destination folder where you want to paste the file.
5. Right click inside the folder.
6. Click on paste.
4. Why you should not edit or
delete someone else's file/folder?
Answer:
1. Respect for others work: The file or folder may contain important work that someone else created or needs.
2. Loss of important data: Deleting or editing can cause permanent loss of valuable information.
3. Privacy violation: The content may be personal or confidential, and accessing it without permission in unethical.
4. Creates confusion or problems: Changing files without knowledge can lead to errors or misunderstandings.
5. Against rules or policies: Most schools, offices, and systems have rules that prohibit tampering with others data.
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