which statement is true?

In reference to the network topology diagram shown in the exhibit, which statement is true?

In reference to the network topology diagram shown in the exhibit, which statement is true?

A.
The network is using a two-layer hub-and-spoke hierarchical design.

B.
The network is using a two-layer full-mesh hierarchical design.

C.
Routers R1,R2,R3,R4,R5 and R6 are the access layer routers.

D.
To improve security, packet filtering that uses ACLs at Routers A and B must be implemented.

E.
To improve scalability, route summarization at Routers R1,R2,R3,R4,R5,R6 must be
performed.

F.
Routers A and B are the distribution layer routers.



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