Solved Board Paper For CBSE Class 9 Computer Applications

a. Data is unorganized fact that required to be processed to make it meaningful whereas information is known as useful data.
b. An Embedded Computer is a microprocessor based system devised for specific function or task. For example AC, Microwave
c. The two basic types of disks in storage devices are floppy disk and hard disk.
d. Wired transmission media is also known as guided transmission media.For example fiber optics.
e. Encryption/Decryption software is used to send the data safely on internet.

a.

b. Some of the limitations of internal memory are:
i. Limited memory
ii.It is a volatile memory

c. The mobile operating systems are:
i. Android
ii.Symbian
iii. Apple IOS
iv. Windows

d. The internet can be used without revealing personal data by private browsing. In this type of browsing users can view website without revealing their own information like their IP address.

e. Communication channel is the one which carries the message from sender computer to the receiver computer.

a.
i. Intranet: An intranet is a private network within an organization that is used to securely share information and computing resources among employees.
ii. Server: A server is a program or a device which provide functionality to other programs or device.
iii. LAN: LAN is Local Area Network that interconnects within a limited area like within a building, campus or university.

b. The advantages for employees due to computer technology are:
i. They have flexible schedule
ii. No office distraction
iii. Money is saved by not commuting.

c. The three damage caused by Malware are:
i. It deletes the files automatically
ii. Changes the PC settings own their own
iii. Slow down computer

d.

e. The advantages of antivirus are:
i. Protect the computer from hacking
ii. It blocks the ads and spam websites
iii. It also provide password protection

a. Utilities are applications program that help, analyze and optimize the computer.
b. The two features of word processor are:
i. Typing in word processor is fast and easy.
ii. The feature of spell check is very helpful in word processor.
c. The different views are:
Print layout view, Full screen reading view, Web layout view, Outline view and Draft view.
d.We can enter the data in three types
i. Numbers
ii. Text
iii. Formulas

e. The two views of PowerPoint slide are:
i. Normal view
ii. Reading view

a. Mail merge means combining a letter with the contents of database i.e. name and address list and sending it to the multiple people.

b. The basic elements of a slide in PowerPoint are:
i. Title
ii. Clip Art

c. i. Cut:Ctrl+X
ii. To justify paragraph: Ctrl+J
iii. To make single spacing of paragraphs: Ctrl+1
iv. To center the paragraph: Ctrl+E

d. The steps to insert a picture from a file are:
i. Click the document where the picture is to be pasted
ii. Click on insert then on picture from file command
iii. Find the graphic file and then click open picture will be inserted.

e.
i. 22
ii. 20

a. There are two important part of function:
i. Argument: The values passed to the function are known as arguments using which function perform the task.
ii. Structure: It begins with function name with opening parenthesis and end by closing parenthesis.

b. Cell pointer: It is a cell-boundary which tells about the active cell.
Current cell: The active cell is known as the Current cell.

c. The steps to impress the presentation are:
i. Create the presentation by creating the slides
ii. Customizing the presentation
iii. Add illustration to the slide by adding images
vi. Make the slide show

d. The steps to add Header and Footer via slide master are:
i. Click on view, then on master afterwards click on slide master.
ii. After that apply the header and footer to the slide and will appear on all slide once master is left.

e. The cell is intersection of rows and columns. It is referred by its address. It contains the number, text and formulas.

The steps to draw a triangle in scratch are:
i. Pen down i.e. in drawing position
ii. Point towards right direction
iii. Move some steps
iv. Turn by 120 degrees
v. Move some steps
vi. Turn at 120 degrees
vii. Move some steps

i.Set pen shade to 50 means to set the pen shade light or dark to specified amount. pen shade 50 means to set it in mid not so dark nor so light, in mid.

ii.Stamp leaves the impression of the sprite’s image onto the shape.

iii. Pen up pull up the sprite’s pen, so that no image is drawn

iv. Set pen colour to set the pen color on choice from colour picker

v. Set pen size to 1 set the thickness of the pen as 1

The steps to draw the square are:
i. First pen down should be there
ii. Point in right direction (value 90)
iii. Move some steps
iv. Point in up direction(value 0)
v. Move some steps
vi. Point in left (value -90)
vii. Move some steps
viii. Point in down direction (value 180)
ix. Move some steps

i. Stage is the background on which animation and other actions take place.
ii. Sprite is a graphic image which moves around and is animated.
iii. Block Palette is the command area that contains all types of commands.
iv. Script is the program in scratch that begins with HAT block.
v. Loop is the multiple execution of the statements.

i. The commands used to draw are:
a. Stamp
b. Pen Down
c. Pen Up

ii. The directions used in Scratch are:
i. For right 90 degree
ii. For Up direction 0 degree
iii. For left firection value -90
iv. For down direction value -180

The steps to draw a hexagon are:

i. Pen down should be there
ii. Point in direction 90
iii. Repeat 6
iv. Move 120 steps
v. Turn 360/6=60 degree

a=10

b=20

sum=a+b

mul=a*b

div=b/a

print 'sum=', sum

print 'mul=', mul

print 'div=', div

Output:

a. side=10

area= side*side

print ('area of the square is:', area)

Output:


b. Output of the following code will be:

a. The size of constants is:
i. 5
ii. 2
iii. 1
iv. 4
v. 1

b.