Virus Symptoms:

1- The computer shuts down without reason.

2- The increase or decrease in the size of files without a clear reason.

3- Strange letters appeared on pressing the keyboard.

4- The appearance of some strange figures or signs.

5- The computer slows down in a noticeable way.

The causes that help in virus spreading:

1- All types of media storing .

- Hard disks - CDs and the Flash Memory

2- Dealing with the internet

- Downloading files.

- Receiving e-mails.

Viruses and ways of protection:

1-Taking special precautions for protection against virus .

2- Using detecting virus programmes.

3- Remove the virus quickly and make a virus scan regularly .

Special precautions for virus prevention: ( Prevention is better than cure)

Use original copies for programmes. -

Make extra copies from the orignal programmes.

Watch the files and their expansion from now and then.

Watch the executive files .

Use anti-virus programmes to detect and delete the viruses.

Virus detecting programmes:

They are the programmes used to scan the computer ( programmes- files data-

storing media available on the set) They have the ability to detect the

viruses if they are found.

Protection against virus

Every computer user should look for updated programmes to detect viruses.

The booting CD should be virus free.

Question

Choose the correct answer:

1-Viruses are………….. that have the ability of reproduction and

spreading.

(Programmes- orders- ways of protection)

2- Virus programme contains a group of………….that will destroy,

delete the programmes.

(Programme- orders- ways of protection)

3-The computer may be infected with a…... but it is inactive.

(Virus- orders- ways of protection)

4- Mention three causes for computer viruses?

1-……………………………………………………

2-………………………………………………………..

3-…………………………………………………

5- Mention three properties for the viruses ?:

1-……………………………………………..

2-………………………………………………..

3-……………………………………………………….

6-Mention two of the virus symptoms ?

1-………………………………………………..

2-…………………………………………………

7-Mention two of the reasons that cause the virus to spread ?

1-……………………………………………………………

2-………………………………………………………….

8-Mention two ways of precautions against viruses?

1-………………………………………………..

2-……………………………………………………..

9-Choose the correct answer:

a -The programmes that are used to detect viruses are …….

(Paint - WordPad - Norton )

b- Anti-viruses programmes have the ability to…………the viruses if

they are found .

( detection - discover and get rid - enhance the set )

84Mr.Khaled Anwar 01003340348