COMPUTER SECURITY

Computer Security

Questions – Answers

1.     What is computer security? What is the importance of computer security?

Ans: Computer security is the protecting of computer system and the data that they store or access.

OR

The security given to the computer data, information, software and hardware is called computer security.

The importances of computer security are:

a.     Protect important files from being stolen (protect from hackers).

b.      protect computers from being stolen or damaged physically.

c.     Computer security helps keep information safe.

d.     Computer security can help protect the invaluable data stored on a hard drive.

e.     Credit card information can be stolen online if a computer isn’t secure.

f.      Tablets and other computers can be easily hacked on public Wi-Fi networks unless strong security measures are utilized

2.     List all the hardware and software security measures to protect the computer.

Ans: Hardware security measures are:

a.     Regular maintenance

b.     Insurance

c.     Free from dust

d.     Fire protection

e.     Power protecting devices

f.      Protection from theft

g.     Air conditioning system

Software security measures are:

a.     Use of password

b.     Virus free environment

c.     Backup data

d.     Scandisk

e.     Defragmentation

f.      Use of original software

3.     What is hardware security?

Ans: Protecting physical components of computer from physical damage, loss, theft or other threats is called hardware security.

4.     What is the importance of UPS in the computer system?

Ans: A UPS system or Uninterrupted Power Supply system is the best bet in order to protect our computers from power issues. Often, power cuts not only lead to the loss of data, they may also damage the internal hardware components of the computer. The recovery of the lost data is often impossible, and also leads to waste of precious time, money and energy.

5.     Define backup? Why do we need backup? Or What is backup? why backup is vital to computer security?

Ans: Backup is a copy of a file or other item of data made in case the original is lost or damaged.

Data backup involves the storing of files from your computer in another location. In this way, if there is ever any loss of data on your primary machine, you still have your data in backup in order to restore those files. In the world of computers loss of data can be devastating, and while there are possibilities for recovery of data after a disaster it is far easier to restore your files from backup than to attempt to find your data on a crashed hard drive. That’s why we need backup.

6.     What is a password? Why do we prefer to keep the password containing alphanumeric as well as special characters?

Ans: Password is a secret word or phrase (a string of characters) that is used to gain access to a computer, interface, or system.

We prefer to keep the password containing alphanumeric as well as special character because the greater variety of characters that we have in our password, the harder it is to guess.

7.     What is fragmentation?

Ans: Fragmentation is the storing of a file in several separate areas of memory scattered throughout a hard disk.

8.     Why does fragmentation cause slow disk access and degrading disk performance?

Ans: Disk fragmentation is a result of how a computer uses storage on a hard drive. As time goes on, files on a hard disk drive will most certainly start to fragment. When a file is ‘fragmented’, parts of it are stored at various locations on a hard disk drive. The end result is that in order to access a file, a computer needs to access different parts of a hard disk drive, the need to access different parts can dramatically slow down the overall performance.