English For telecommunications

A modern telephone often includes a bell so it can ring and a keypad and frequency generator. There is an electronic microphone, amplifier and circuit. The mechanical bell is often replaced by a speaker and a circuit to generate a pleasant ringing tone. But a regular telephone remains one of the simplest devices ever. The telephone network startsin your house. A pair ofcopper wires runs from a box at the road to a box at your house. From there, the pair of wires is connected to each phone jack in your house (usually using red and green wires). If your house has two phone lines, then two separate pairs of copper wires run from the road to your house. The second pair is usually colored yellow and black inside your house. Along the road runs a thick cable packed with 100 ormore copper pairs. Depending on where you are located, this thick cable will run directly to the phone company's switch in your area or it will run to a box about the size ofa refrigerator that acts as a digital concentrator.

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1 Name: ............................................................ Ngày sinh ............................... Class: ............................................................. Mã sinh viên .............................. Test: English For telecommunications Test 1 (Time: 90 minutes - Do not use dictionary) I. Answer the questions, basing on the passage. Telephones: Wires and Cables A modern telephone often includes a bell so it can ring and a keypad and frequency generator. There is an electronic microphone, amplifier and circuit. The mechanical bell is often replaced by a speaker and a circuit to generate a pleasant ringing tone. But a regular telephone remains one of the simplest devices ever. The telephone network starts in your house. A pair of copper wires runs from a box at the road to a box at your house. From there, the pair of wires is connected to each phone jack in your house (usually using red and green wires). If your house has two phone lines, then two separate pairs of copper wires run from the road to your house. The second pair is usually colored yellow and black inside your house. Along the road runs a thick cable packed with 100 or more copper pairs. Depending on where you are located, this thick cable will run directly to the phone company's switch in your area or it will run to a box about the size of a refrigerator that acts as a digital concentrator. Questions: 1. What does a modern telephone often contain? ............................................................................................................................ 2. Where does the telephone network start? ............................................................................................................................ 3. What happens if your house has two phone lines? ............................................................................................................................ 4. What is the usual colour of the pair of wires connected to the phone jack in your house? ............................................................................................................................ ............................................................................................................................ 5. How large is a digital concentrator? ............................................................................................................................ 2 II. Translate the passage into Vietnamese. (A modern telephone… red and green wires). ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... III. Write complete sentences using the suggested words or phrases. 1. There / three major entities / provision / Internet service. ............................................................................................................................ 2. basic purpose / provide / means / synchronous data transmission. ............................................................................................................................ 3. Telecommunication / be / transmission / signals over / distance for / purpose/ communication. ............................................................................................................................ ............................................................................................................................ 4. Where line networks / set up / can be / classified / indoor and outdoor. ............................................................................................................................ 3 5. Bell / make / lot / inventions / but / telephone / most important. ............................................................................................................................ IV. Translate the following sentences into English. 1. Trong thông tin quang, các tín hiệu điện được biến đổi thành các xung ánh sáng. ............................................................................................................................ 2. Cáp kim loại có thể sử dụng cho cả hai loại kênh thoại - tương tự và số. ............................................................................................................................ 3. Các trạm lặp đầu cuối có thể được đặt trong trạm mặt đất hay các tổng đài chuyển tiếp. ............................................................................................................................ ............................................................................................................................ 4. Trước đây lưu lượng truyền trên mạng Internet chủ yếu là thông tin trên cơ sở văn bản. ............................................................................................................................ ............................................................................................................................ 5. Mạng LAN đặc biệt hữu dụng trong các công ty, trường đại học… ............................................................................................................................ V. Write about the importance and usefulness of Internet services. (about 100 words). ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... 4 Name: ............................................................ Ngày sinh ............................... Class: ............................................................. Mã sinh viên .............................. Test: English For telecommunications Test 2 (Time: 90 minutes - Do not use dictionary) I. Answer the questions, basing on the passage. What is a Satellite? A satellite is basically any object that revolves around a planet. The moon is Earth's original, natural satellite, and there are many artificial satellites, usually closer to Earth. • The path a satellite follows is an orbit. In the orbit, the farthest point from Earth is the apogee, and the nearest point is the perigee. • Artificial satellites generally are not produced a lot. Most satellites are custom built. Yet, the GPS satellites (with over 20 copies in orbit) and the Iridium satellites (with over 60 copies in orbit). • Approximately 23,000 items of space junk which are floating above Earth. The actual number varies depending on which agency is counting. This online catalog of satellites has almost 26,000 entries! Although anything that is in orbit around Earth is technically a satellite, the term "satellite" is typically used to describe a useful object placed in orbit to perform some specific task. We often hear about weather satellites, communication satellites and scientific satellites. New words: - perigee: cận điểm, điểm gần trái đất nhất - artificial: nhân tạo - apogee: điểm xa trái đất nhất - custom built: sản xuất theo đơn đặt hàng - orbit: quỹ đạo - space junk: những vật thể bay trong vũ trụ Questions: 1. What is a satellite basically? ............................................................................................................................ 2. What do apogee and perigee mean? ............................................................................................................................ 3. How many copies of Iridium satellites are there in orbit? ............................................................................................................................ 4. What is the term "satellite" typically used to describe ? ............................................................................................................................ 5 5. Give one example of artificial satellites. ............................................................................................................................ II. Translate the passage into Vietnamese. (A satellite is basically … 60 copies in orbit). ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... III. Write complete sentences using the suggested words or phrases. 1. quality / speech transmitted /by satellite / good. ............................................................................................................................ 2. technique used / exchange / be / space division switching. ............................................................................................................................ 3. data network / consist / number / components /which / interconnected. ............................................................................................................................ 4. Today/ telecommunication devices / such as / television / radio / telephone / be / common / many parts / world. ............................................................................................................................ 6 ............................................................................................................................ 5. Voice communications / seldom / carried by / geosynchronous satellites. ............................................................................................................................ IV. Translate the following sentences into English. 1. Các nhà cung cấp dịch vụ cung cấp truy cập Internet. ............................................................................................................................ 2. Nhiệm vụ của hệ thống chuyển mạch là để thiết lập một kênh tạm thời giữa người gọi và thuê bao được gọi. ............................................................................................................................ ............................................................................................................................ 3. Viễn thông đóng một vai trò quan trọng trong nền kinh tế thế giới. ............................................................................................................................ 4. Nguồn sáng có thể là đi ốt phát quang hay laser. ............................................................................................................................ 5. Một trong những cách phân lọai cáp thông tin là theo chất liệu. ............................................................................................................................ V. Write about the history of telephone exchanges. (about 100 words) ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... 7 Name: ............................................................ Ngày sinh ............................... Class: ............................................................. Mã sinh viên .............................. Test: English For telecommunications Test 3 (Time: 90 minutes - Do not use dictionary) I. Answer the questions, basing on the passage. Perhaps the telephone you have in your house is one of the most amazing devices ever created. If you want to talk to s
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