Bài tập tiếng Anh chuyên ngành điện tử viễn thông

t triển cùng với việc mở rộng 
hợp tác với các tổ chức trong khu vực và quốc tế. Các tri thức hoạt động trên mạng như tài chính 
điện tử, trao đổi thông tin... sẽ tăng lên. 
Exercise 7. Translate into English. 
To meet the demands on managing the Internet, Vietnam needs to carry out these 6 main tasks: 
• To set up perfect legal documents for Internet development. 
• To continue to set up a legal environment and actively participate in the development 
of Internet. 
• To enhance the examination and investigation of infraction activities. 
• To facilitate activities of businesses in customer service, to allow for pilot plans of 
new services; to reconsider of Internet access tariffs. 
• To study and apply new services based on the Internet, such as e-commerce. 
• To enhance international cooperation; develop technology studies about Internet to 
quickly apply and deploy new technologies in Vietnam. 
Exercise 8. Fill in the blanks with suitable form of the words. 
1. accustomed 2. integration 3. applications 4. digital 
5. processing 6. devices 7. switches 8. generation 
Exercise 9. A. Give the short form for these phrases. 
1. CO 2. ga. 3. VBD 4. DAVIC 
5. RADSL 6. VDSL 7. xDSL 8. HDSL 
9. SLICE 10. FSK 11. QAM 12. ADSL 
13. ANSI 14. DMT 
B. Match the names with the characteristics. 
1. e 2. a 3. c 4. b 
5. f 6. g 7. d 
UNIT 8 
Exercise 1. Separate the two texts and put them in the correct order. 
Written instructions: 1. h 2. f 3. j 
 4. a 5. e 6. m 7. g 
Spoken instructions: 1. l 2. k 3. n 
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 4. d 5. b 6. i 7. c 
Exercise 2. Choose the appropriate form of the words to complete the sentences. 
1. a. B b. A c. C 2. a. B b. C c. A 
3. a. B b. C c. A 4. a. B b. C c. A 
5. a. B b. A 
Exercise 3. Choose the one option - a, b, c or d - that best completes the passage. 
1. b 2. d 3. c 4. a 5. c 
6. c 7. a 8. d 9. b 10. d 
Exercise 4. Match these suggestions for extensions to their meanings. 
Extension Meaning 
.coop 
.edu (.ac in UK) 
.gov 
.info 
.int 
.museum 
.name 
.net 
.org 
.pro 
.firm 
.store 
.web 
.arts 
. rec 
.nom 
cooperatives 
educational and research 
government 
informative 
international organisation 
museums 
individuals 
gateway or host 
non-profit organisation 
professionals 
firm or agency 
online retail store 
Web-related 
cultural or entertainment 
recreational 
personal 
Exercise 5. Read the text then match the beginnings and endings to make complete 
sentences. 
1. d 2. f 3. i 4. g 5. b 
6. h 7. a 8. c 9. e 
Exercise 6. Reading text 
A. Complete the text with suitable forms of the given words. 
1. connection 2. devices 3. operating 4. modification 5. relatively 
6. useful 7. solutions 8. equipment 9. applications 10. operators 
B. Match the two columns to make phrases. 
CompactPCI systems telecommunications network 
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system design transfer mode 
CompactPCI bus individual components 
operate) systems network interfaces 
CompactPCI backplane peripheral chips 
Exercise 7. Read the text then choose the most suitable answer. 
1. b 2. a 3. b 4. b 5. a 
 6. b 7. a 8. c 9. c 10. c 
UNIT 9 
Exercise 1. A. Match the right with one on the left. 
 1. d 2. b 3. e 4. c 5. a 
B. Find a word which means the opposite of the following words and expressions. 
1. higher 2. national 3. far/ distant 4. mobile 5. safety 
6. giant/ big 7. cheaper 8. allow/ permit 9. landing 10. earth 
Exercise 2. Fill in each blank with ONE suitable preposition. 
1. over … to 2. about 3. up 4. by 5. to 
6. of … in 7. as … in 8. of 9. of 10. to 
Exercise 3. Fill in each blank with ONE suitable preposition. 
1. satellites 2. based 3. channels 4. system 
5. end-user 6. antenna 7. receiver 8. digital 
9. computer 10. use 
Exercise 4. Read the passage then answer the questions. 
1. Instant connections and clearer conversations 
2. To make a phone call, to do one’s banking, to rent videos, to buy things. People use their 
telephone to connect their home computers to computerized information centers. People 
also send letters and documents through phone by fax. And new systems may be available 
shortly for sending video pictures over the telephone. 
3. No. 
4. A call from a mobile phones travels along radio waves to stations located in different 
places. From there, the radio signal is connected to the regular phone system 
5. Less wasted time. You don’t have to look for a phone booth or use coins to make a call. 
Exercise 5. Match the two columns. 
1. EMF: extremely high frequency 
2. GSM: Global System for Mobile Communication 
3. HDTV: High Density TV 
4. IF: Intermediate frequency 
5. ITU: International Telecommunication Union 
6. TU-R: ITU - Regulated 
7. LEO: Low earth orbit satellite 
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8. LOS: Loss of signal 
9. MCA: Multi-channel Access 
10. pls: please 
11. PM: Phase Modulation 
12. PTO: Public Telephone Operator 
13. SS7: Signalling System No.7 
14. VF: Voice frequency 
Exercise 6. Read the text then match the two columns. 
• A 2 GHz system has a range of approximately 50 kilometres 
• The passive link station generally consists of two directly interconnected parabolic 
antennas without any amplifying electronics between them. 
• The active link station links, amplifies or regenerates the signal. 
• The distance between the link stations is called the hop length. 
• The hop length depends on output power, antenna type, climate and on the frequency 
• The link station may be either active or passive. 
• An 18 GHz system has a range of 5 - 10 km 
• Each radio link needs two radio channels. 
Exercise 7. Read the text then decide whether the sentences are true or false. Correct the 
false ones. 
1. T 
2. F. Radio can be used locally and intercontinentally. 
3. T 
4. F. Infrared, visible and ultraviolet light, and X-ray frequencies are other ranges. 
5. T 
6. F. The radio spectrum is divided into eight frequency bands, form VLF (very low 
frequency) to VHF (extremely high frequency). 
7. T 
8. Radio link systems use frequencies between 2 and 14 GHz. 
UNIT 10 
Exercise 1. A. Give the full forms of the abbreviations. 
LEO: low earth orbit CDMA: code division multiple access 
GSM: global system for mobile communications 
AMPS: advanced mobile phone service FDMA: frequency division multiple access 
IMTS: improved mobile telephone service TDMA: time division multiple access 
B. Answer the questions. 
 1. a 2. b 3. a 4. b 
 5. a 6. b 7. a 8. b 
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C. Match the two columns to make suitable phrases. 
metropolitan area telecommunications technology 
satellite system geosynchronous satellites 
frequency band voice communications 
cell site copper pairs 
transmission technology digital transmission 
dial tone electronic equipment 
Exercise 2. Fill in the blanks with suitable prepositions. 
1. c 2. a 3. b 4. c 
5. a 6. a 7. c 
Exercise 3. A. Fill in the blanks with suitable numbers. 
1. 24 2. 80,000 35,800 3. IV 
4. 0.5 5. 100 
B. Find out what the words in BOLD typeface refer to. 
1. They (line 2): satellites used for telecommunications/ geostationary satellites 
2. which (line 3): having an orbiting time of 24 hours 
3. them (line 3): satellites used for telecommunications/ geostationary satellites 
4. which (line 10): a 240 ms delay 
5. who (line 14): Intelsat 
6. that (line 17): the few stations 
7. which (line 18): Intelsat IV 
C. Decide whether the sentences are true or false. Correct the false ones. 
1. F. Approximately one third of the earth’s surface is covered by an antenna with global 
radiation. 
2. F. Intercontinental use of satellites has decreased in favour of optical submarine cables. 
3. T 
4. F. Satellite links are used in national as well as international telecommunications 
networks. 
5. F. The long distance between terrestrial stations via the satellite causes a 240 ms delay. 
6. T 7. T 
7. One of Intelsat’s satellites is Intelsat IV which has 80,000 voice channels. 
Exercise 4. Match the stems and affixes with their definitions. 
1.g 2.d 3.c 4.f 
5.h 6.e 7.a 8.b 
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MỤC LỤC 
UNIT 1 ....................................................................................................................................... 3 
UNIT 2 ....................................................................................................................................... 9 
UNIT 3 ..................................................................................................................................... 15 
UNIT 4 ..................................................................................................................................... 18 
UNIT 5 ..................................................................................................................................... 26 
UNIT 6 ..................................................................................................................................... 32 
UNIT 7 ..................................................................................................................................... 37 
UNIT 8 ..................................................................................................................................... 48 
UNIT 9 ..................................................................................................................................... 58 
UNIT 10 ................................................................................................................................... 63 
KEY ......................................................................................................................................... 69 
MỤC LỤC ............................................................................................................................... 85 
BÀI TẬP 
TIẾNG ANH 
CHUYÊN NGÀNH ĐTVT 
Mã số: 491ANH213 
Chịu trách nhiệm bản thảo 
TRUNG TÂM ÐÀO TẠO BƯU CHÍNH VIỄN THÔNG 1