Kips IT Beans Class 7 Chapter 12 Solutions THE VIRUS

|
TextbookKips IT Beans
Class7
SubjectComputer
Chapter12 THE VIRUS
Other ChaptersChapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11

Kips IT Beans Class 7 Chapter 12 Solutions THE VIRUS

Brain Developer

A. Fill in the blanks:

1. A computer virus disrupts the normal operation of a computer.

2. Computer virus results in loss of Speed and Destruction of data.

3. Virus Enters the computer without the permission or knowledge of the user.

4. A computer virus causes harm to the Data and Programs stored in a computer by overwriting them with garbage.

5. Virus enters through an infected Pen Drive or CD.

6. Virus programs are Self-replicating.

7. Some virus programs monitor the Clock in the host computer and trigger on a certain day, like Friday the 13th.

8. Anti-virus Software are designed to identify, prevent and remove virus from a computer.

B. State True or False:

1. A computer virus is similar to a biological virus. – TRUE

2. All virus programs cause harm to data or programs. – FALSE

3. The virus, Friday the 13th gets activated on 25th December. – FALSE

4. The Creeper virus was first detected on ARPANET in the year 2002. – FALSE

5. We should equip our computer with anti-virus programs. – TRUE

6. Trojan Horses are self replicating. – FALSE

7. Virus can enter our computer through an infected pen drive. – TRUE

8. Virus has no effect on the speed of a computer. – FALSE

9. Virus increases the memory of a computer. – FALSE

10. VIRUS stands for Vital Information Resources Under Seize. – TRUE

C. Application Based Questions:

Varsha’s computer has got infected with a virus, which led to the frequent hanging of the system. Which software will you suggest her to install in order to solve this problem?

I suggest her to install McAfee Virus Scan.

Sumit’s computer is not working properly. The executable files and programs with extensions, like.com,.exe, .ovl, .drv.sys on his PC have got infected. What type of virus has entered into his computer?

Program File Viruses

D. Multiple Choice Questions:

1. Which virus infects the boot record or master boot record?

  • Worm
  • Boot Virus
  • Spyware

2. Which virus is named after the wooden horse used by the Greek Army to conquer the city of Troy?

  • Dark Avenger
  • Stoned Virus
  • Trojan Horse

3. When was the first PC virus released?

  • 1987
  • 1985
  • 1897

4. Which one of the following is the name of a virus?

  • Jan First
  • April First
  • May First

5. Who released the first PC virus?

  • Duke Brothers
  • Wright Brothers
  • Farooq Alvi Brothers

E. Answer the following:

What is a computer virus? Name its types.

A computer virus is a program or a set of programs that disrupts the normal operation of a computer. Virus infects or destroys data. It enters in the computer without the permission or knowledge of the user.

The full form of VIRUS is Vital Information Resources Under Seize. The essential resources of the computer, like memory, processing speed, data and programs, etc., cannot have normal operations and can be harmed, when virus spreads.

Write any three possible symptoms of virus in a computer.

Three possible symptoms of virus in a computer are:
• Frequent hanging of the system.
• Reformatting the hard disk.
• Deleting or damaging files.

What do you understand by the term Spyware?

SPYWARE is a type of malware that is installed on computers and collects information about users without their knowledge.

Spyware programs secretly monitor the user’s computing. They can collect various types of personal information, such as internet surfing habits, visited web pages, and transmits that information in the background to someone else. Sometimes they also change computer settings that result in slow connection speed and wrong functionality of other programs. Spyware can also collect information about e-mail addresses, passwords, and even credit card numbers.

Explain the term Trojan Horse.

TROJAN HORSE is a simple program that pretends to be a useful application, whereas it always do something destructive – mostly it damages a computer, like erasing a disk. It is not self replicating. A Trojan can spread only when it is copied to another system. The name ‘Trojan Horse’ is derived from the wooden horse used by the Greek Army to conquer the city of Troy.

Write any three ways that can help in preventing a virus infection.

To prevent virus attack, follow the given tips:
• Every PC should be equipped with some anti virus program.
• Always scan the pen drive before copying files.
• Scan the hard disk twice a month.

Briefly explain Antivirus software. Name the antivirus software that is used in your school computers.

Antivirus software are computer programs which are designed to identify, prevent and remove viruses from a computer. They perform the following tasks in a computer:
• Scan the computer files to look for known viruses matching definitions from virus dictionary.
• Identify suspicious behaviour from any computer program which might indicate infection.
My school uses some of popular antivirus softwares such as McAfee Virus Scan, AVG Antivirus.

Other Chapter Solutions

Leave a comment