单选题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?()AapplicationBpresentationCsessionDtransportEinternetFdata link

单选题
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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