多项选择题

Which of the following services use TCP?（）

A.DHCP
B.SMTP
C.SNMP
D.FTP
E.HTTP
F.TFTP

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多项选择题

Refer to the router topology shown in the graphic. Assuming that all routers are running OSPF, which statements correctly describe how the routers exchange routing information?（）

A. Denmark exchanges with Utah, Paris, and Berlin.
B. Utah exchanges only with Denmark.
C. Berlin exchanges with Denmark, Utah, and Paris.
D. Paris exchanges only with Denmark.
E. Denmark exchanges with only Paris and Utah.

多项选择题

Which of the following are characteristics of named access lists?（）

A. Individual statements in a named access list may be deleted.
B. They require a numbered range from 1000 to 1099.
C. When created, they must be specified as standard or extended.
D. They are created with the ip access-list command.
E. The entire access list must be deleted before editing.
F. They are applied with the ip name-group command.

单项选择题

A default Frame Relay WAN is classified as what type of physical network?（）

A. point-to-point
B. broadcast multi-access
C. nonbroadcast multi-access
D. nonbroadcast multipoint
E. broadcast point-to-multipoint

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