LANs and WANs

Warm up
Try to answer these questions
1. A computer network is simply two or more computers linked to gether
2. The benefits of connecting computers and peripherals in a network are:
- Sharing information easily without printing, copying, telephoning, or posting.
- Saving money
Reading
Read the text on page 134, then match the technical terms on the left with the explanations on the right
1. b
2. c
3. g
4. f
5. a
6. e
7. d
Writing
A. Read the decription of the office are network. Then write similar descriptions of the other two areas.
Writing
B. If you use a network write a short description of it, with details of its architecture and protocol. Say what you and your colleagues use the network for
Wans and worldwide communications
Try to answer these questions
1. WANs is a network which can link computers across the world
2. They can be linked up over a long distances by telephone lines or fibre-optic cables
Wans and worldwide communications
Try to answer these questions
3. Transmitting digital text, sound, voice, and video data over telephone lines
4. Connecting networks on different continents
Speaking
In a small groups, study and dicuss the illustration. Then prepare a description and give an oral report to the class
1. Los Angeles
2. telephone lines
3. Barcelona
4. fibre-optic cable
5. client
6. PC
7. dish aerrial
8. satellite relay