Question 1

Click the exhibit.

When router A receives the BGP update for the 192.168.0.1/27 prefix, it propagates it to routers B and C. What action is taken by router B when it receives the update?

Options :

A : Router B propagates the BGP update to routers D and C.

B : Router B propagates the BGP update to router D.

C : Router B detects duplicates in its BGP database and discards the update.

D : Router B propagates the update to routers A, C and D.

Answer: B

Question 2

Click the exhibit.

Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between ISP 1 and the other ISPs?

Options :

A : ISP 1 has a peering relationship with ISP 2 and ISP 4.

B : ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.

C : ISP 1 has a peering relationship with ISP 2 and ISP 3.

D : ISP 1 has a transit relationship with ISP 2 and ISP 4.

E : ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.

Answer: B

Question 3

Which of the following comparisons between E-pipes and VPLSes is FALSE?

Options :

A : They both function as a Layer 2 switch from the service provider-s perspective.

B : They both support SAP encapsulations of null, dot1Q and Q-in-Q.

C : They both use SAPs as the demarcation point between the customer and the provider.

D : MAC addresses are learned by VPLSes, but not by E-pipes.

Answer: A

Question 4

Identify two attributes of Distance Vector Protocols: (Choose two)

Options :

A : Use split horizon by default.

B : Send information about directly connected links to neighbors at periodic intervals.

C : Use holddown timers when topologies change to allow for convergence.

D : Maintain multiple databases: neighbor, topology and routing.

Answer: A,C

Question 5

Assuming that 'client1' and 'client2' are directly-connected networks, what is the result of executing the following BGP export policy?

Options :

A : 'client1' routes will be tagged with communities 'North' and 'West'.

B : 'client1' routes will be tagged with community 'West'.

C : 'client1' routes will be tagged with community 'North'.

D : 'client1' routes will be rejected.

Answer: C