Chapter AE, Problem AE6.3

Explanation of Solution

a.

Browse the link www.7-zip.org. The web page looks like the image given below:

Screenshot of 7-Zip

Explanation of Solution

b.

Click download.

Screenshot of 7-Zip

• Click “Install”...

Explanation of Solution

c.

Go to downloads folder and select any large file.

Screenshot of Downloads

...

Explanation of Solution

d.

Right click on the large file. For example, right click on the file “sample”.

Screenshot of D...

Explanation of Solution

e.

Click 7-Zip and then click “Add to archive”.

Screenshot of Downloads...

f.

Explanation of Solution

Rename the file as “PresillaDora.7z”.

Screenshot of Add to Archive

Explanation of Solution

g.

In the encryption section enter the password.

Screenshot of Add to Archive

...

Explanation of Solution

h.

Screenshot after entering the password.

Screenshot of Add to Archive

Explanation of Solution

i.

Then, click “OK”.

Screenshot of Add to Archive

Explanation of Solution

j.

Right-click and select 7-Zip after the file has been compressed. Then select the Extract to “PresillaDora\”...

Explanation of Solution

k.

Enter the password and then click “OK”.

Screenshot of Password dialog box

Explanation of Solution

l.

Necessity of Third-party encryption:

Computer security mainly deals with protecting data in the computer by preventing unauthorized access.

• It is a protection given to the information system such as computer to achieve the following objectives:
  • Integrity
  • Availability
  • Confidentiality
• If the third-person tries to access the data, then the confidential data may get hacked...

Explanation of Solution

l.

Benefits of compressing large files when using cloud-storage:

• Compressing large files will help in shrinking the size of the data...