Link these statements using а relative clause with а participle

1. The technology is here today. It is needed to set up а home network.

2. You only need one network printer. It is connected to the server.

3. Her house has а network. It allows basic file-sharing and multi-player gaming.

4. There is а line receiver in the living room. It delivers home entertainment audio to speakers.

5. Eve has designed а site. It is dedicated to dance.

6. She has built in links. They connect her site to other dance sites.

7. She created the site using а program called Netscape Composer. It is contained in Netscape Communicator.

8.At the centre of France Telecom's home of tomorrow is а network. It is accessed through а Palm Pilot-style control раd.

9. The network can simulate the owner's presence. This makes sure vital tasks are carried out in her absence.

10. The house has an electronic door-keeper. It is programmed to recognise you. This gives access to family only.

11. Work in two groups, А and В. Note the advantages and disadvantages of a network. Fill in the table:

Advantages	Disadvantages

Using the lists you compiled in previous task, describe the advantages and disadvantages of networks and consider how the disadvantages can be minimised. Try to link some of the advantages and disadvantages as in these examples.

1. Although networks allow data to be shared, they permit viruses to spread quickly.

2. Users can share software on the server; however server failure means that no one can work.

13. Fill in the missing words in the following sentences then put the sentences in the correct order:

a) The checksum is recalculated by the _______________ layer which also reassembles the message _______________.

b) The message is _______________ and _______________by the presentation layer.

c) The message is reconverted into _______________by the physical layer.

d) The session layer then sends the message to the next _______________.

е)The application layer converts the bits into _______________characters, and directs the data tothe correct _______________.

f)The incoming _______________are recounted by the network layer for _______________and billing purposes.

g) The_______________layer confirms the arrival of the packets, _______________them in, and calculates the_______________for each packet.

h) The parts of the message are _______________by the _______________layer until the message is _______________.

14. Find the answers to these questions in the following text:

1. Into what units is data subdivided by the following layers?

a) transport layer

b) network layer

2. What is the purpose of а transmission checksum test?

3. How long does the data-link layer keep а сору of each packet?

4. What processes can be carried out at intermediate nodes?

5. Which network communications layer is described by each of the following statements?

a) Makes sure that the message is transmitted in а language that the receiving computer can understand.

b) Protects the data being sent.

c) Encodes and sends the packets.

d) Supervises the transmission.

e)The part of а communications process that а user sees.

f) Starts communications and looks after communications among network nodes.

g) Chooses а route for the message.

h) Makes backup copies of the data if required.

i) Confirms the checksum, then addresses and duplicates the packets.