单项选择题

Acknowldgement, Sequencing, and Flow control are characteristics of which OSI layer?（）

A.Layer 2
B.Layer 3
C.Layer 4
D.Layer 5
E.Layer 6
F.Layer 7

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The administrator is unable to establish connectivity b...

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A.Authentication needs to be changed to PAP for both routers.
B.Serial IP addresses of routers are not on the same subnet.
C.Username/password is incorrectly configured.
D.Router names are incorrectly configured.

Exhibit: Which of the following are true regarding the ...

多项选择题

Exhibit: Which of the following are true regarding the command output shown in the display (Choose two.)（）。

A.There are at least two routers participating in the RIP process.
B.A ping to 192.168.168.2 will be successful.
C.A ping to 10.0.15.2 will be successful.
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B.#delete vlan.dat
C.#novtp domain
D.#vtp domain null

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Acknowldgement, Sequencing, and Flow control are characteristics of which OSI layer?（）