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B. Fill in the blanks.
1. ................................ software is designed to keep your computer safe from harmful and potentially undesirable
malware.
2. Websites utilise ................................ to upload and download files from their servers.
3. A ................................ is a computer that is connected to a network.
4. ................................ connects two networks that may use different networking models.
5. The higher the data transfer rate, ................................ the bandwidth of a given medium.
6. Two or more computers connected to each other for information exchange form a .................................
[CBSE Handbook]
7. A technique in which a dedicated and complete physical connection is established between two nodes for
communication is ................................ switching. [CBSE Handbook]
8. ................................ is a means of gaining unauthorised access to a computer with the goal of causing harm.
9. ................................ is the network of networks.
10. ................................ is defined as a crime in which a computer or the internet is utilised in an unauthorised manner to
harm a user.
Ans. 1. Anti-virus 2. FTP 3. node 4. Gateway 5. greater
6. Network 7. Circuit 8. Cracking 9. Internet 10. Cybercrime
C. State whether the following statements are true or false:
1. Point-to-Point Protocol helps transfer hypertext files over the internet. .................
2. Viruses cause the system to slow down or even stop working. .................
3. Peer to Peer networks are small networks that use dedicated server. .................
4. Voice band is used for regular telephone communication. .................
5. Telnet allows you to connect to a remote machine. .................
6. Broadband is the fastest and is used for transmitting large amounts of data at high speeds. .................
7. In packet switching, user has direct access to internal memory. .................
8. In MAN, transmission speed is lower than WAN. .................
Ans. 1. False 2. True 3. False 4. True 5. True
6. True 7. False 8. False
Section B
(Subjective Type Questions)
A. Short answer type questions.
1. Differentiate between the following:
i. Circuit Switching and Packet Switching
Ans.
Circuit Switching Packet Switching
Data is processed at source system All intermediary nodes, including the source system,
process data.
The whole path’s address provided by the source is Each data unit only knows the end destination
known by each data unit. address; the routers choose the intermediate routing.
More wastage of resources Less wastage of resources
User has direct access to internal memory’s User has no direct access to ROM
148 Touchpad Web Applications-XI

