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C. Advantages of 3G

D. Expanded Networking

XV 1 b, 2 c, 3 b, 4 c, 5 b, 6 b, 7 a, 8 b, 9 a, 10 c, 11 b, 12 a, 13 c, 14 b, 15 a

Grammar

XVI 1-e; 2-g; 3-b; 4 -f; 5-a; 6-h; 7-c; 8-d;

XVII

If I were you, I would use wireless Internet.

2. What would you do if you got a virus in your computer.

3. If there were no Internet, people wouldn’t have any access to news sites that tells us more about world wide events.

4. Would the Internet have appeared If the ARPAnet had not developed in the late 1960^th an experimental network of computers?

If you CTRL X press you will cut the highlighted text.

If the domain name your are looking for is taken, you can click WHOIS to find out who registered it, or click Visit to see the site

7. If the computer engineer named Ray Tomlinson had not sent the first e-mail message in 1971, people probably would not have communicated across the network for a long time.

If you used search engine more effectively, you could find more relevant results.

Speaking

XIX

1. Who is your current ISP?

2. Have you had any problems with them? If so, what?

3. What type of internet connection do you have?

4. Is it fast enough for your requirements? If not, how would a faster connection be useful to you?

5. From where do you usually access the internet?

6. On average, how many hours a week do you spend online?

7. Have you ever done these things?

a. sent and received emails

b. chatted in real time

c. booked a flight online

d. used your credit or debit card to pay for something over the internet

e. had a virus on your computer

f. had a problem with identity theft

g. downloaded a photo from a bulletin board

h. connected to the internet over a wireless connection

I. set up a wireless network in your own home or office

XX 1-e; 2-a; 3-j; 4-d; 5-f; 6-b; 7-h; 8-I; 9-c; 10-g

XXIII. Quiz

1. False. They are similar, but there are some minor differences.

2. True

3. True

4. False – they can be deleted (in Internet Explorer, go to Tools / Internet Options / Delete Files)

5. True

6. True

7. False. Many are advertisements, but information about program updates etc. is also sometimes displayed

as pop-ups.

True

XXV 1) a line graph 2) a bar chart; 3) a pie chart;

UNIT 7

Signal – sign, indication (n) Processing - progress , advance (n) Transmission – transportation (n) Channel – pathway, route (n) Communicate – interact, exchange information (v) Antenna – receiver, wire (n) Noisy – loud (adj) Network – chain, grid (n) Design – develop (v) Challenge - dispute, question (n) Synchronize - coordinate (adj) Estimate – value (v) Represent - perform Consider - think, suppose

VIII.

1) analog-to-digital converter 2) compression. 3) Encryption 4) channel coding 5) Modulation 6) backward error correction. 7) transmission channel 8) Synchronisation

· LAN - Local Area Network · WLAN - Wireless Local Area Network · WAN - Wide Area Network · MAN - Metropolitan Area Network · SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network · CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network · PAN - Personal Area Network · DAN - Desk Area Network LAN and WAN were the original categories of area networks, while the others have gradually emerged over many years of technology evolution.

1 - network; 2 - TCP/IP; 3- subnet; 4 -operating; 5 - organization; 6- technologies; 7- Token Ring 8-distance ; 9- Internet ; 10- router; 11 -IP; 12 - ownership; 13 - technology; 14 - ATM

1-d; 2-e; 3-a; 4-c; 5-b

XII

Network topologies:1 star, 2 hierarchical, 3 ring, 4 line or bus Text 1 -Bus Topology Text 2 Ring topology Text 3 Star topology Text 4 tree topology

XIII

1-b; 2-a; 3-c; 4-a; 5-c; 6-b

	You usually have to allow at least two working days for (1) delivery
	Choose an item, and (2) add it to your (3) shopping basket.
	Click "(4) confirm". Now it's too late to change your mind!
	When you have finished shopping, click "proceed to (5) checkout".
	Usually, you will receive an (6) invoice by email.
	Enter your name, address and card (7) details.
	Before you can start shopping, you usually have to (8) sign in to the site. (If you don't already have an (9) account, you have to create one.)
	(10) browse the website, and decide what you want to buy.

XVI

1 over, 2 to, 3 in, 4 of, 5 by, 6 into, 7 on, 8 out

Speaking

Date: 2016-03-03; view: 1193

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