题目内容
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. Open Shortest Path First (OSPF) is a (36) routing algorithm that (37) work clone on the OSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing, requires (38) processing power. The (39) algorithm is used to calculate routes. OSPF routing table updates only take place when necessary, (40) at regular intervals.
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采用可变长子网掩码技术可以把大的网络分成小的子网，例如把子网掩码为 255.255.0.0的网络40.15.0.0分为两个子网，假设第一个子网为40.15.0.0/17,则第二个子网为 (1) 。假设用户X1有2000台主机，则至少应给他分配 (2) 个C类网络，如果分配给用户X1的网络号为196.25.64.0，则指定给X1的子网掩码为 (3) ；假设给用户X2分配的C类网络号为196.25.16.0～196.25.31.0，则X2的子网掩码应为 (4) ；如果路由器收到一个目标地址为11000100.00011001.01000011.00100001的数据报，则该数据报应送给 (5) 用户。 4（）
For each blank, choose the best answer from the four choices and write down on the answer sheet. (11) is a protocol that a host uses to inform a router when it joins Or leaves an Internet multicast group. (12) is an error detection code that most data communication networks use. (13) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information. (14) is a transfer mode in which all types of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media. (15) is an identifier of a web page.
For each blank, choose the best answer from the four choices and write down on the answer sheet. (11) is a protocol that a host uses to inform a router when it joins Or leaves an Internet multicast group. (12) is an error detection code that most data communication networks use. (13) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information. (14) is a transfer mode in which all types of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media. (15) is an identifier of a web page.
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. The key to SNMP (76) is its simplicity. It has a small command set that does a good job of collecting information from (77) any network device. In a SNMP environment, (78) of the work is handled by the network management system. Devices that are being managed are not (79) with processing (80) that might affect their performance.
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