题目内容
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.
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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. 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.
In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (61) between sending the notification and notification arriving at the source, thousands of additional (62) may arrive. In ATM network, a major tool for preventing (63) is (64) control. When a host wants a new virtual (65) , it must describe the traffic to be offered and the service expected.
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.
简述社会保险基金投资应当遵循的原则。
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