软件水平考试（中级）网络工程师上午（基础知识）试题模拟试卷2
-
(13)
- A．material
- B．equipment
- C．medium
- D．channel
-
(14)
- A．repeaters
- B．radars
- C．telephones
- D．antennas
-
(12)
- A．transmitted
- B．transformed
- C．converted
- D．delivered
-
(11)
- A．reflex
- B．distort
- C．bend
- D．absorb
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In the following essay, each blank has four choices. Choose the best answer and write-down on the answer sheet.
Microwave communication uses high-frequency(71)waves that travel in straightlines through the air. Because the waves cannot(72)with the curvature of the earth, they can be(73)only over short distance. Thus, microwave is a good(74)for sending data between buildings in a city or on a large college campus. For longer distances, the waves must be relayed by means of "dishes" or(75). These can be installed on towers, highbuildings, and mountain tops.
- A．optical
- B．radio
- C．electrical
- D．magnetic
-
(9)
- A．message and packet
- B．packet and frame
- C．stream and datagram
- D．flow and block
-
(8)
- A．full-duplex
- B．half-duplex
- C．simplex
- D．complex
-
(6)
- A．is made of
- B．composed of
- C．is composed of
- D．is consisted of
-
(7)
- A．Email address and IP address
- B．MAC address and port address
- C．MAC address and IP address
- D．port number and IP address
-
(4)
- A．medium
- B．media
- C．matter
- D．plastid
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In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
- A socket is basically an end point of a communication link between two applications. Sockets that extend over a network connect two or more applications running on(66)computers attached to the network. A socket(67)two addresses:(68). Sockets provide a(69)
- A．unique
- B．separate
- C．same
- D．dependent
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ATM when referring to computers is a dedicated, connection switching technology that organizes digital data into 53-byte(69)units and transmits them over a physical(70)using digital signal technology. ATM is capable oftransniitfing at speeds of 155 or 622 MBit/s and faster.
- A．minuteness
- B．toothful
- C．cell
- D．spot
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在双绞线布线后要进行测试，一般情况，下面(64)不是测试的项目。光纤测试的内容不包括(65)项目。
- A．近端串扰
- B．拓扑结构
- C．开路或短路
- D．错对
-
(2)
- A．衰励损耗
- B．长度
- C．近端串扰
- D．时延