Digital Learning

Tuesday, May 2, 2023

Computer-Science Class-6 Exercise-2(2023-24):

Computer Science
Class-VI
Chapter-2  More about Windows 7

A. Tick the correct answer:
1. Which of the following allows you to search files, folders and any other information?
a. MS Word        b. Search tool        c. Windows media player        d. None of these
Answer: Search tool

2. Which of the following features allows us to make the opened windows transparent to make the desktop visible?
a. aero peek        b. Taskabar            c. Jump list                                d. none of these
Answer: Aero peek

3. Disk defragmenter option is available in:
a. System tools    b. Windows media player    c. Disk cleanup        d. none of these
Answer: System tools

4. Which of the folloiwng is used for recognizing errors in order to enhance the performance of the system?
a. Ripping            b. Disk cleanup       c. Disk scanner                        d. None of these
Answer: Disk Scanner

B. Fill in the blanks:
1. _________ is used to remove unnecessary files which are not being used for a long time.
Answer: Disk cleanup

2. ________ takes the user directly to the desired documents, pictures, songs, etc. that we use frequently.
Answer: Jump list

3. __________ is an application that helps us play and organize various media files on a computer.
Answer: Windows Media Player

4. __________ is copying the audio files from a CD into our computer by using windows media player.
Answer: Ripping

5. Estimate _________ developers worked on windows 7.
Answer: 1000

C. Write True or False:
1. We can use calculator in our computer for mathematical calculation.
Answer: T

2. Disk defragmentation is a program that rearranges the files stored in a hard disk.
Answer: T

3. Burning a CD and ripping a CD is one and the same thing.
Answer: F

4. We cannot display two windows side by side at a time in windows 7.
Answer: F

5. We cannot record our voice with the help of a microphone into our computer.
Answer: F

D. Answer the following questions:
1. Is it possible to display two windows simultaneously? If yes, how?
Answer: It is possible to display two windows simultaneously.
1. Open both the application windows one by one.
2. Suppose the MS word window is active. Press the Ctrl key and right click on the paint window taskbar.
3. Click on show windows side by side option.
4.Both the application windows will be displayed side by side.

2. What is windows media player?
Answer: The Windows Media Player is an application available in windows 7 that is used for entertainment purpose.

3. What is the use of jump list?
Answer: Jump list is a new feature in windows 7. It takes us directly to the desired documents, pictures, songs, etc.

4. Write the steps for defragmenting disk drives.
Answer: Steps for degragmentation disk drives:
1. Click on start button.
2. Click on all program.
3. Click on Accessories.
4. Click on System tools.
5. Click on Disk Defragmenter.
5. Describe the Disk Cleanup process.
6. Click on configure schedule.
7. Click on the check box of run.
8. Select the respective frequency, day and time.
9. Click on OK Button.
10. Click on defragment disk button.
11. Click on close button.

5. Describe the Disk Cleanup process.
Answer: Disk cleanup is used to remove unnecessary files which are not being used for a long time. It is used to free the disk space so that the computer can run faster.


Monday, May 1, 2023

Computer-Science Class-7 Exercise-2(2023-24):

Computer Science
Class-VII
Chapter-2 Network and Communication

A. Tick the correct answer.
1. A computer network enables two or more computers to share_____ and resources.
a. data        b. information            c. memory            d. option
Answer: data

2. Networking of computers is a basic need of today's:
a. era          b. world                        c. day                    d. children
Answer: world

3. One of the advantages of computer networks is:
a. internet    b. accuracy                c. speed                d. service
Answer: speed

4. Computer networks save a lot of ______ for any organizations in different ways.
a. energy       b. time                        c. money              d. cost
Answer: cost

5. One of the major drawbacks of computer networks is the _____ issues.
a. electricity    b. password             c. time                 d. security
Answer: security

6. Resource sharing is another important benefit of a ____ network.
a. area                b. mobile                c. computer        d. bluetooth
Answer: computer

7. A server is the ______ that controls functioning of other computers.
a. protector       b. administrator    c. manager        d. client
Answer: administrator

8. A network interface card more commonly referred to as a:
a. NIC            b. LAN                        c. GUI                   d. ALU
Answer: NIC

9. It is difficult to make the _______ secure from hackers, movices or industrial espionage.
a. system        b. network                c. viruses               d. data
Answer: system

10. In _____ two or more computers and peripheral devices are connected within a small are.
a. MAN            b. WAN                    c. LAN                    d. NIC
Answer: LAN

Saturday, April 29, 2023

Computer-Science Class-7 Exercise-1(2023-24):

Computer Science
Class-VII
Chapter-1  Computer Language

A.Tick the correct answer:
1. Today, much purchased software, shareware and freeware is downloaded from the _____.
a. internet            b. computer        c. hardware        d. system
Answer: Internet

2. Digital computer represents all kinds of information and data in the ___ system.
a. octal                  b. binary              c. decimal           d. hexadecimal
Answer: Binary

3. _____ number system consists of two digits i.e., 0 and 1.
a. decimal            b. octal                c. binary                d. dexadecimal
Answer: Binary

4. The base of decimal number system is _____.
a. 16                       b. 15                    c.  A to F                d. 10
Answer: 10

5. Octal number system uses fewer ______ than conventional number system.
a. symbols            b. decimals        c. instructions       d. devices
Answer: Symbols

6. _____ number system consists of 16 digits.
a. decimal            b. hexadecimal   c. octal                    d. binary
Answer: Hexadecimal

7. The alphabets ________ represent decimal numbers from 10 to 15.
a. A to D                b. A to G              c. A to F                  d. A to E
Answer: A to F

B. Fill in the blanks:
1. Computer system consists of hardware and software_____.
Answer: Component

2. ________ refers to objects that we can actually touch.
Answer: Hardware

3. ______ refers to the computer instructions or data.
Answer: Software

4. Anything that can be stored_________ is software.
Answer: Electronically

5. Software can be purchased or ______________.
Answer: Download

6. Software is often packaged on CD-ROMs and ______.
Answer: Disk

7. Computers can understand only___________.
Answer: Machine language

C. Write true or false:
1. We can feel and touch the software.
Answer: False

2. Hardware is not an essential part of computer systems.
Answer: False

3. Software and hardware are different to each other.
Answer: True

4. Motherboard is an internal hardware.
Answer: True

5. Keyboard is an external hardware.
Answer: True

6. Graphics software is used by a graphic designer.
Answer: True

D. Answer the following questions:
1. What is a computer system?
Answer: A computer system consists of hardware and software components, they work together to operate the programs.

2. What is hardware? Name any two internal hardware and external hardware.
Answer: All physical parts of computer are called hardware.
Internal hardware: RAM and Motherboard
External hardware: Keyboard and Mouse.

3. What is software? Explain in brief.
Answer: Set of programs is called software.
Software refers to the computer instructions or data. Software is stored on CD, DVD  etc.
Example: MS Office, CAD/CAM software, Game software, Antivirus etc.

4. What are some general kinds of application that software includes?
Answer: Some general kinds of application that software includes:
* Productivity software- MS Word, MS Excel, MS PowerPoint
* Presentation software
* CAD/CAM software
* Graphics software
* Software for banking, insurance etc.

5. What is Binary number system?
Answer: Binary number system consists of two digits i.e., 0 and 1. Its base is 2. Digital computer represents all kinds of information and data in the binary system.

6. What is decimal number system?
Answer: The decimal number system consists of ten digits i.e. 0 to 9. Its base is 10. It is probably the most commonly used number system.