XII -Computer Network Worksheet- Module 1 Network Devices-converted PDF

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Description

Computer Networks

Worksheet

Max Marks: 20

1. What do you mean by a modem? Why is it used? 2. Explain the following devices:

1 1x7 = 7

a. Switch b. Hub c. Repeater d. Bridge e. Router f. Gateway e. Wi-Fi Card 3. Ms. Anu Srivastav, in charge of Knowledge centre in XYZ school, recently discovered that the communication between his centre and the primary block of the school is extremely slow and signals drop quite frequently. The distance between these two blocks is 160 meters. Name the device which may be used for smooth communication. 1 4. Answer the following questions in the context of a computer lab with 100 computers. Answer the following questions. 2 a. Which device is used to connect all computers inside the lab? b. Which device is used to connect all computers to the internet using telephone wire? 5. Name the device that establishes an intelligent connection between a local network and external network with completely different structures.

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6. Name the network device that works like a bridge to establish connection between two networks but it can also handle networks with different protocols.

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7. Nancy Software company ltd. has set up its new Branch at Bangalore for its office and web based activities. It has four wings of buildings namely A , K, R , S. The distance between the wings are as follows : Wing A to K 40 M Wing K to R

120 M

Wing R to S

60 M

Wing A to S

170 M

Wing K to S

150 M

Wing A to R

70 M

The number of computers in each wing is shown below: Wing A

25

Wing K

50

Wing R

125

Wing S

10

i) Suggest the placement of the following devices with justification. a) Repeater b) Switch

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ii) The organization is planning to link its head office situated in Delhi with the offices at Srinagar. Suggest an economic way to connect it; the company is ready to compromise on the speed of the connectivity. Justify your answer. 1 iii) The company changed its mind due to some unforeseen developments and want to connect its head office situated in Delhi with the offices at Srinagar. The Company wants a secure system with high speed connectivity, even if it is costly. Suggest the way to connect it. 1 8. Differentiate between Bridge and Router

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9. Name the device which also serves as a Proxy Server.

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10. Differentiate between Router and Gateway.

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