CBSE Class VIII : FA Exam


Mathematics
FA-I
Class VIII
Note: All Questions are compulsory:

Que1: What is Rational and Irrational Numbers?
Que2: Write about Even, odd, whole and Natural numbers?
Que3: Write the additive inverse of:
a)  2/8                                      b)   -5/2
Que4: Write multiplicative inverse of:
a)  -5/3 x -3/7                         b)  -1
Que5: Represent the number line:
a)  7 / 4                          b)  8 / 3
Que6: Solve:
a)  x -2 = 5                             b)  y – 10 = -3
c) 1.6 =  y / 1.5
Que7: Three consecutive numbers are such that they are taken in increasing order x and multiply by 2, 3 and 4 respectively. If they add up to 74. Find these numbers.

CBSE Book Computer Practice Middle Classes

Practical Work For class VIII

Notice for all students that they should start the
computer in proper manner and in gentle way.

All students should do algorithms and flow chart practices
on Microsoft Word and Notepad.

Algorithms is a step by step process.

So, make an example of an algorithms in their own way.

CBS E Computer Book Chapter : Algorithm

        Class VIII

        Chapter 1

        Aglorithms

Que: What is algorithms?
Ans:
1. Algorithms are the pseudo code. That are used to
make a blue print of software program and applications.
2. It is also a step by step process.

Que: What is pseudo code?
Ans: Pseudo code is a code that is written in user's
laguage.

Que: What is Software Program?
Ans: A software Program is written in any computer
programming language.

Que: What is Programming Langauges?
Ans: Programming Langauges are the code that is used to
make software for hardware access.

Que: Write some examples of programming languages?
Ans: C, C++, Java, .NET, PHP, Basic, etc.

Que: Write an algo to add a number?
Ans: Step1: Take three No. a, b and c.
    Step2: Add a and b
    Step3:    put result in c.
    Step4: Print c (i.e, Result of a+b)

CBSE computer book chapter : virus and antivirus

            Chapter 2

A. Multiple Choice Questions:

1. Which of the following is an anti-virus program
(a) Norton
(b) Quick heal
(c) K7
(d) All of these
? (d) All of these

2. All of the following are examples of real security
and privacy threats except:
(a) Hackers
(b) Spam
(c) Virus
(d) Worm
? (a) Hackers

3. Trojan horses are very similar to virus in the
matter that they are computer programs that replicate
copies of themselves.
(a) True
(b) False
? (b) False

4._____________ monitors user activity on internet
and transmit that information in the background to
someone else.
(a) Malware
(b) Adware
(c) Spyware
(d) None of these
? (c) Spyware

5. Viruses are__________.
(a) Man made
(b) Naturally occur
(c) Machine made
(d) All of the above
? (a) Man made

6. Firewall is a type of ____________.
(a) Virus
(b) Worm
(c) Security threat
(d) None of the above
?(d) None of the above

7. Unsolicited commercial email is known as ____________.
(a) Spam
(b) Virus
(c) Malware
(d) Spyware
? (a) Spam

B. Match the following

(1)     Virus         (a)     “Get Rich Quick” Scheme
(2)     Worm         (b)     Cool Web Search
(3)     Trojan Horse     (c)     I Love You
(4)     Spyware     (d)     Jerusalem
(5)     Spam         (e)     Wazzo

Answer

(1)     Virus         (a)     Wazzo
(2)     Worm         (b)     Jerusalem
(3)     Trojan Horse     (c)     I Love You
(4)     Spyware     (d)     Cool Web Search
(5)     Spam         (e)     “Get Rich Quick” Scheme

C. Answer the following questions:

1. While working on the computer, you notice that the
system is working very slowly, files are corrupted,
default home page on the web browser has changed, lot
memory is consumed, and unnecessary pop-ups are coming.
 What can be the probable reason?

Answer

The computer gets infected from Spyware. It monitors user
activity on the Internet and transmits that information
in the background to someone else. Spyware can also
gather information  about e-mail addresses and even
passwords and credit card numbers. It also sends
information back to the spy ware’s home base via the
user’s Internet connection, thus it eats user’s internet
bandwidth.

2. You have very important data on your computer. How
will you ensure that this data remainssafe?

Answer
We can make our important data safe on computer through below steps:
1. Using Security software such as Norton antivirus,
Symantec etc.
2. Beware of email attachments form unknown sources
3. Do not randomly download material from websites
which has not been checked for security.
3. Never propagate hoax or chain emails.
4. Frequently back up important data and files.
5. Use encryption or sites that use encrypted data.

3. Differentiate between virus, worms and Trojan horses.

Answer
Virus- A computer virus is a program usually hidden with
in another simple program. It produces copies of itself
and inserts them into other programs or files, in turn
destroying the data and performing other malicious
 actions. Computer viruses are never naturally
occurring; they are always man-made.

Worms- Worms are very similar to viruses in the manner
that they are computer programs that replicate copies
of themselves (usually to other computer systems via
network connections). Unlike viruses, worms exist as
separate entities; they do not attach themselves to
other files or programs.

Torjan Horses- A Trojan horse is a program that claims
to rid your computer of viruses but instead introduces
viruses into the system. The Trojan program does not
attach itself to the files like a virus nor replicate
itself like a worm but it does provide unauthorized
access to user’s computer. They are mostly spread
through internet downloads and online gaming programs.
They mostly affect the targeted computers.

4. How is a hacker different from a cracker?

Answer

Hackers were the gifted programmers who gain access to the systems or network to show case the security loopholes to the administrators.
Cracker was activist who had intentions of doing malicious activities. Crackers have an end goal of destroying data and network for personal monetary gains.

Define MS word

Q. No. (1) How you will create and save file?
Suppose we are creating a file of MS Word, it will
 done as
(1) Open MS Word as Start       
Programs      
MS Word
(2) Now type which you want to keep in file
(3) Now save the file as following procedure
File
Save       
Select location where to save file         
click on save button

Q.No. (2)  What does copy/Paste Command do?
Copy / paste moves the duplicate of original file
or folder to new location.

Q.No. (3)  What does cut/past command do?
Cut / paste moves the original file / folder completely,
 removing it from its original location.

Q. No. (4)  What is procedure for Copy / paste and cut
/paste 
(1) Right click the file or folder you want to copy
(2) Select the copy from right click menu
(3)  Go to location where you want to past/cut file
and right click
(4)  Select paste/cut from the right click menu

Q.No. (18)   What Is Dragging and how can u do?
Dragging is quick method to copy/paste a file/folder
from one location to other. It will do as
 (1)   Move the mouse to the file to be dragged and
 keep the left button pressed
(2)   Drag the file by moving mouse to new location
 and release the left button
Q.No.(19)  What does Delete command do and how can
u do it?
Delete command is use to delete or erase a file
or folder, you can do it as
Right click the file / folder and select Delete
from right menu    or
Single click the file / folder when its color
got blue press Delete Key from Keyboard.

Q.No. (6)  What do you know about typing tutor?
Typing tutor is software, used to teach typing. The knowledge of typing is necessary for using computer

Q.No. (7)  Provide brief note on keyboard?
Keyboard is input device used to enter data into computer. There are about 101-105 keys are on it.
Commonly used keyboard is known as QWERTY, QWERTY define the arrangements of keys
There are 4 types of keys are on keyboard. Function keys, numeric keys, alpha-numeric and cursor control key
Typing speed is measured in WPM or CPM

Q.No. (8)  What do know about MS Word?
MS word is used to create text documents like applications. There are many feature of MS Word.

Q. No. (9)  How you will open MS Word?
We will open it by this procedure  
Start            
Programs           
MS Word

Q.No. (10)  What are the components of MS Word Window?
When you open MS Word, its window consist of these components
1) Title Bar    
2) Menu Bar    
3) Standard Tool Bar    
4) Formatting Bar    
5) Rulers    
6) Status Bar

Q. No. (11)  How you will create a document in MS Word?
Open the MS word,
create you work like application,
table and then save the file for late use.

Q.No. (12) How you can select text in MS Word?
There are two different method for selecting a text from MS Word document, by keyboard and by mouse
By Keyboard you can select the text as
1)     Place the cursor before or after the text to be selected
2)     Press the appropriate arrow key until the text is highlighted
By Mouse you can select the test as
1)     Place the cursor before or after the text to be selected
2)     Hold down left click of mouse and drag the mouse on text to be selected
Note: if you want to select the whole document then press shift+a

Q.No. (13) How you will use copy/past command in Word?
(1)  Select the text either by mouse or keyboard
(2)  Right click on selected text and click on copy
(3)  Right click on the area where u want to past it
(4)  Click paste, hence copy /paste will done

Q. No. (14)  How you will delete text in MS Word ?
There are 3 different method to delete the text in word
1)     Place the cursor on left side of text to be deleted and press back space key until the text removed
2)     Place the cursor on right side of text to be deleted and press Delete key until the text removed.
3)     Select the text to be deleted by mouse or keyboard and press delete key. 

Q.No. (14)  What do you know about font?
Font means a complete character set of a single size and style of a particular typeface.
Typeface is physical appearance of characters. Formatting tool bar is use to change these characters
You can change font name, font size and can do Bold, Italic, under line and align the text left, right etc

Q.No. (15)  How you will change the font?
Select the text by keyboard or mouse and click on the desired button in formatting tool bar

Q.No. (16) How many option for changing case available in Word?
Text can be written in lower case, upper case, sentence case, title case, and toggle case.

Q.No. (17) How you will change the case of text?
Select the text           
format menu           
change case            
select the desire option

Q.No. (18)  What is procedure for saving in file in Word? ….
File menu            
 save          
give file name            
click on save button

Q. No. (19) How many mistake or error comes in MS Word?
Normally two type of errors come across while working in MS Word
(1) Spelling error:       the text under lined with red color
2) Grammar error:    the text under lined with green color