多项选择题

Which of the following ports would have to be allowed through a firewall to allow SNMP traffic topass on its default port?（） (Select TWO).

A.22
B.23
C.143
D.161
E.162
F.8080

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单项选择题

Which of the following wiring standards would MOST likely be used to interconnect two devices without the use of a hub or switch?（）

A.568A
B.568B
C.Crossover
D.Loopback

单项选择题

After a baseline check was completed it was noted that the network was working far below the level of the last baseline.
Which of the following should the technician do NEXT to determine where the network problems are occurring?（）

A. Upgrade the firmware on all routers and switches
B. Reboot the entire network one device at a time
C. Conduct a network traffic analysis
D. Rerun the baseline to ensure the results were correct

单项选择题

Which of the following uses a ring topology?（）

A.DSL
B.Ethernet
C.DOCSIS
D.SONET