计算机网络教考分离试卷（Computer network teaching test separation test paper）.docVIP

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计算机网络教考分离试卷（Computer network teaching test separation test paper）.doc

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计算机网络教考分离试卷（Computer network teaching test separation test paper）

计算机网络教考分离试卷（Computer network teaching test separation test paper） 1: first, a multiple choice (2 points per day, a total of 20 points) One to four correct answers in four answers to each of the following items in the correct answer, please select all Leave the letters in the brackets of the questions. One When using decimal notation to represent IP addresses, for the C class network segment, the first byte is planned for C CC C). (A) 1~126 B) 128~223 C) 192~223 D) 1~192 2. provide the protocol conversion between the transport layer and the transport layer above, also known as protocol converter equipment D DD D). A) forwarder B) bridge C) router D) gateway 3. computer networks commonly used communication transmission medium AB ABAB AB). (A) fiber optic B) twisted pair C) D) network card 4. in an address block prefixed with /21 (21 bit network address), the number of host addresses available is (B BB B). A) 254, B) 2046, C) 1024, D) 512 5. in the following protocols, the commonly used routing protocol is (CD CDCD CD ). A) TCP/IP protocol B) ICMP protocol C) OSPF protocol D) RIP protocol 6. each host must be in (C) CC C Registration. A) local domain name server B) root DNS server C) domain name server D) top-level domain server 7., when you use subnet masks to set up subnets, you can play the network CD CDCD CD) role. A) change the IP address B) and cancel the IP address C) improve the security of the network D) determine the network address. 8. these are the three elements of the computer network communication protocol (AC ACAC AC ). (A) semantic B) instruction C) temporal D) annotation 9.. Manage the Internet domain name and network address in the following organizations (D DD D). (A) IETF B) IRTF C) ISO D) ICANN 10. the following protocol data units are ( A AA A ). A) PDU B) PCI C) IDU D SAP (two), fill in the blanks to match each 2 points, each 1 points or 0.5 points, a total of 20 points) 11 The Ethernet standard bandwidth is 10MB/S, and the bandwidth of the fast