Computer Security/Class 10

 Answer the following questions:

a. What is meant by Computer Security?

Ans: The protection of computer data, information, program, and hardware from malicious attackers is known as computer security.

b. What is a computer security threat? List its types.

Ans: Computer Security threat is anything that causes loss or corruption of data, information, software, or physical damage to the computer hardware.

Its types are as follows:

• Physical threat
• Non-physical threat

c. What is malicious code? List any two examples of it?

Ans: Malicious code is harmful computer code that is intended to cause undesired effects or damage to a computer system. Its two examples are as follows:

• Computer viruses
• Worms

d. What are computer viruses? List any two destruction tasks of it.

Ans: A computer virus is a destructive computer program that disturbs the normal functioning of a computer system. Its two destructive tasks are as follows:

• It displays unnecessary messages and images
• It runs unwanted programs

e. What are the routes of computer viruses
transmission?

Ans: The two routes of computer viruses transmission are as follows:

• Using pirated software
• By sharing of infected portable storage device
• By downloading files from unreliable websites
• By exchange of data on the network
• By Opening virus infected email 

f. List any four symptoms of computer viruses.

Ans: The four symptoms of computer viruses are as follows:

• Changes in the size of files
• Missing files or folders
• Appearing of unusual error messages
• Programs hang or frequently

g. Write four preventive ways to protect the computer system from computer viruses.

Ans: The four preventive ways to protect the computer system from computer viruses are as follows:

• Stop using Pirated software
• Install antivirus software
• Scan the Computer for viruses regularly
• Install the latest security patch program

h. Define computer worm and trojan horse?

Ans: Computer Worms are malicious codes that do not hide in any file and spread from one computer to another while exchanging files through email, the internet, and portable storage disk.
The Trojan horse is a destructive program that pretends to be useful but performs malicious actions.

i. What is information security? What does it do?

Ans: Information Security is the protection of data, information, and software from being lost or damaged due to accidental or intentional harm.
It controls or prevents the unauthorized
accessing of data and information.

j. List any four data and software security measures. 

Ans: The four data and software security measures are as follows:

•  firewall
• Antivirus Software
• Authentication system: Password and Biometric
•  Backing up data and software

k. What is a password? Why do we need to apply a password for a file?

Ans: A password is a secret word or a sequence of characters that provides accessibility to a user to access a file or computer system.
We need to apply passwords for bile to protect them from unauthorized users.

l. What is cryptography? Explain with a diagram.

Ans: Cryptography is the method of protecting data and information by converting contents using codes into a

format that is unreadable to unauthorized users.

m. What is a firewall? List any four purposes of using a firewall.

Ans: A firewall is an information Security measure that works like a barrier between a Computer and the internet which prevents computers from unauthorized users.

The four purposes of using a firewall program are as follows: 

• To block unwanted network traffic
•  To protect the private network from unwanted access
• To block the unsuitable content of the site.
• To prevent the entry of viruses, Warms, etc.

n. What is antivirus? List any antiviruses.

Ans: Antivirus is a program that detects and removes Viruses, worms, trojan horses, etc. from the Computer system.

The four antiviruses are as follows:

• Kaspersky Antivirus
• Avira Antivirus
• Avast Antivirus
• AVG Antivirus

o. What is a backup? Mention the importance of a backup system.

Ans: A backup is a duplicate copy

of data, information, and software. 

The importance of a backup system is as follows:

• It helps to protect the data and information of a computer
• It helps to recover files if the operating system is crashed
• It helps to protect data ga against power failure.

p. What is hardware security? List four hardware security measures.

Ans: Hardware Security refers to the protection of Computer hardware from being damaged or lost.

The four hardware Security measures are as follows:

• Regular maintenance
• Insurance
• Protection from fire and thieves
• Air Condition system

q. How does regular maintenance help to protect computer hardware?

Ans: Regular maintenance helps to find out problems in hardware and correct the problem before it causes several damage. It helps to keep the computer hardware in good working condition. 

r. What is a power protection device? List
any four protection devices. 

Ans: Power Protection device is a device that protects Computer hardware from the fluctuation of electric voltage, frequent power failure, and high voltage.

The four devices for power protection

are as follows:-

• Volt guard
• Spike guard
• Stabiliser 
•  Constant Voltage Transformer

s. What is the role of Ups in Computer Security?

Ans: The role of ups in computer security is to protect computer hardware, files, and Operating system from the fluctuation of electric voltage and frequent
Power failure.