Page 70 - CA 165 ver 1.0 Class 9
P. 70
Solved Exercise
PART A
A. Very short answer type questions.
1. Name the crime which involves use of the Internet to harass or threaten other people on the network, by
following them online.
2. What is misuse of data and resources available online called?
3. Name the malware that replicates itself inside the computer’s memory and slows down the functioning of
the computer.
4. What is an unwanted computer program which can be injected into a network to infect and slow down the
systems called?
5. Name the malware that intrudes into a computer and quietly steals the data without the user’s consent.
6. What is unwanted and unsolicited messages sent for the purpose of advertisement or promotion called?
7. Give an example of a spyware.
Ans. 1. Cyberstalking 2. Cyber Crime 3. Worms 4. Virus 5. Spyware 6. Spam
7. Keylogger
B. Fill in the blanks.
1. .................................... is a measure to prevent oneself from cyber crimes or cyber attacks.
2. .................................... refers to the safety practices followed to prevent theft of personal information.
3. .................................... is the hardware or software component that keeps a network secure.
4. .................................... are meant to store information related to the activities performed during web browsing.
5. A ................................. is a key of codes that keeps our content secure by authenticating a person before
granting access.
6. .................................... means to keep the data secure by restricting unauthorised access.
Ans. 1. Cyber Safety 2. Identity Protection 3. Firewall 4. Cookies 5. Password
6. Confidentiality
C. Case Based MCQs
Malware refers to infectious programs that hampers the functioning of a computer system. It is unwanted
software which is designed to damage a computer system.
1. Which computer programs or algorithms slow down the functioning of a computer?
i. Virus ii. Worms
iii. Trojan Horse iv. None of the above
2. Which one is the example of a spyware?
i. Keylogger ii. Byte Bandit
iii. Mydoom iv. Infostealer.Kronbank
3. .................................... refers to an unwanted and unsolicited message which is received in the inbox of a
person’s e-mail account or in newsgroups.
i. Boot Sector Virus ii. Program File Virus
iii. Spam iv. Spyware
68 Touchpad Computer Applications-IX

