单项选择题
A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server. What is the highest layer of the protocol stack that the nework administrator is using for this operation?（）
A. application
B. presentation
C. session
D. transport
E. internet
F. data link
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相关考题
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单项选择题
Refer to the exhibit, Host A pings interface S0/0 on router 3, what is the TTL value for that ping?（）
A. 253
B. 252
C. 255
D. 254 -
单项选择题
Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication?（）
A.transport
B.network
C.presentation
D.session
E.application -
多项选择题
Refer to the exhibit. Which three statements correctly describe Network Device A（）
A.With a network wide mask of 255.255.255.128, each interface does not require an IP address.
B.With a network wide mask of 255.255.255.128, each interface does require an IP address on a unique IP subnet.
C.With a network wide mask of 255.255.255.0, must be a Layer 2 device for the PCs to communicate with each other.
D.With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to communicate with each other.
E.With a network wide mask of 255.255.254.0, each interface does not require an IP address.
