单项选择题

You would like to configure an Ethernet interface with the following characteristics: Fast

Which set of configuration commands accurately completes this task?（）

A.A
B.B
C.C
D.D

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单项选择题

Which CLI command displays FECN and BECN information on a Frame Relay interface configured on serial interface 4/0:3/1 ?（）

A.A
B.B
C.C
D.D

多项选择题

Which two services protect the ERX Edge Router from unauthorized CLI logins?（）

A.A
B.B
C.C
D.D

多项选择题

Which two features protect the ERX Edge Router from denial-of-service attacks?（）

A.A
B.B
C.C
D.D