38 Computer -- Computer Security

State whether the following statements are true or false.

1 Answers

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a. When a hard disk of a computer system get damage or lost, we don't lose any data and information.
- False

b. Sometime by mistake user can delete important files.
- True

c. Hardware securing means securing hard disk from being damaged.
- True

d. Dust, fluctuation of electricity and overheat can damage hardware of the computer.
- True

e. The regular check up of computer system helps us to keep computer system in good working condition.
- True

f. Volt guard and stabilizer can supply back up electric power to a computer system when there is power cut off.
- True

g. A UPS supplies steady voltage and provides electric power to a computer system for a short time.
- True

h. When we set a password to a file an unauthorized person cannot delete a file.
- True

i. Scan disk is a application like Ms-word.
- False

j. Defragmentation rearranges the fragmented files in the contiguous spaces on the disk.
- True

What is computer security?

The protection of computer's data, information, softwareand hardware from being damagedor lost is calledcomputer security.

Why do you need to apply computer security measures?

We need to apply computer security measuresbecause of the following reasons:
-For normal functioning of computer system.
- For increasing the working speed and expectancyof a computer.
-For proper security of computers.
-For protection of computer hardware and software resources.

What is meant by hardware security?

The hardware security refers to the protection of computerhardware from factors likedust, over heat, fluctuationof electricity and other intentional harm.

What are hardware security measures?

The hardware security measures are:
-Regularmaintenance.
-Insurance.
-Free from dust.
- Fire protection.

How do you keep your computer in working conditions?

The hardware components of computer system are verydelicate devices and they may get damaged if the propercare has not been done regularly. Theregularmaintenanceof computerhelps us to find the problems in hardware.So, theycan be repaired in time before they causeseveraldamage. Hence, application of safetyand regularmaintenancehelps us to keep our computerworking condition.

Why is a system password used in a computer?

A password is a secret word that gives gives a user orblocks an unauthorized users to access to particularfile, program or a system. A system password helpsto protect the files and programs from being used byan unauthorized person. So, the unauthorized users cannotmakeany changes in content of a computer. It helps to stopthe spreading of computer viruses, and makes differentsoftwaresecure. So, system password is used in acomputer.

Why does the computer system need a power protection device? Name any four power protection devices.

The hardware is sensitive to electric voltage. Itseeds normalelectric voltage for functioning. Thefrequentfailure of electric power can damagecomputer hardware,corruptsfiles, operating system, etc. So, to preventthis problems by providing the computer the constant voltageof power using paper protection devices, we need powerprotection devices fora computer.
Any four power protection devices are:
- Volt guard.
-Constant Voltage transformers.
-Stabilizer.
-Spikeguard.

Mention the importance of UPS.

The importance of UPS are:
-It used as power protection devices.
-It reduces/controls the fluctuation of electricvoltage.
-It saves the hardware/software from being damaged.
-It provides backup electric power.

What is meant by data and software security?

Data and software security refers to the process ofsecuring data andsoftwarefrom being lost or damaged due to accidental or intentional harm.

Why do we need to backup data and software?

The backup system helps to make the duplicate copyof data & software. If data and software get lost ordamaged due to fluctuation of electric voltage, powerfailure , viruses or intentional then backup system helpsus to recover the lost or damaged data or software fromthe backup copy of data and software. Hence, we needto backup data and software.

How can you keep the hard disk and floppy disk in good condition?

We can keep the hard disk and floppy disk in good condition by the following ways:
-By using scan disk and antivirus programs.
-By defragmenting the disks.
-By keeping it in dust free environment.
-Using power protection devices that prevents the damageof the disks.

What is defragmentation?

Theprocess of consolidating fragmented files byrearranging the fragmented files in the contiguous spaceson the diskthat helps in normal functioning of a computersystem is called defragmentation.

Why do we need to defrag a hard disk?

We need to defrag a hard disk because:
-To analyze the disk and rearrange the fragmented files.
-To reduce/control fragmentation.
-To increase theperformance of diskoperation.
-To increase the contiguous spaces on the disks.

Write the technical terms for the following statement.

a.An electric device that supply steady electric powerwhen electricity is cut off.
- UPS

b. An electric device that supplies electric power whenelectricity is cut off.
- UPS

c. A secret word that gives a user access to a particularfile, program or system.
- Password

d. A program that disinfects virus.
- Scan disk

e. Acopy of file orprogramthat is used whenoriginalfile is corrupted.
- Backup copy

f. A programthat checks and keepshard disk in goodcondition.
- Scan disk

g. A program...

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