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SMTP工作在OSI哪一层（）
A.会话层
B.表示层
C.传输层
D.应用层
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更多 “ SMTP工作在OSI哪一层（）A.会话层B.表示层C.传输层D.应用层 ” 相关考题
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On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)A. The destination host sends a request to the source for retransmission.B. The jam signal indicates that the collision has been cleared.C. The hosts will attempt to resume transmission after a time delay has expired.D. An electrical pulse indicates that the collision has cleared.E. The router on the segment will signal that the collision has cleared.F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.
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Which of the following correctly describe the various functions and virtues of a router? (Select all valid answer choices)A. Packet switchingB. Collision prevention on a LAN segment.C. Packet filteringD. Broadcast domain enlargementE. Broadcast forwardingF. Internetwork communicationG. None of the above
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You are unable to telnet to a router at address 203.125.12.1 from a workstation with the IP address 203.125.12.23. You suspect that there is a problem with the IP protocol stack in your PC. Which of the following actions is most likely to confirm your diagnosis?A. ping 127.0.0.0B. ping 203.125.12.1C. telnet 127.0.0.1D. ping 127.0.0.1E. tracert 203.125.12.1F. None of the above
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你使用命令copy running－config startup－config保存路由器的配置,并重启路由器,但路由器启动后没有任何运行配置。请问可能出现了什么问题?()
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