In the diagram, R7 receives a new LSA from R3 and installs it in its link state database. 10 ms. later it receives another copy of the LSA with the same sequence number from R8. What does R7 do with the LSA received from R8?

• A.R7 silently discards the LSA received from R8.
• B.R7 installs the LSA received from R8 in its link state database and floods a copy to its neighbors.
• C.R7 discards the LSA received from R8 and sends an ACK to R8.
• D.R7 installs the LSA received from R8 in its link state database, sends an ACK to R8 and floods a copy to its neighbors.

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The sequence numbers are used by TCP to ensure that the data receive is provided to the application in
the correct order.

• A.TRUE
• B.FALSE

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Network address: 200.12.30.0
Network mask: 255.255.255.0
Use the information above. You need to create 12 subnetworks supporting 10 host addresses each.
Which extended prefix will meet this requirement?

• A./24
• B./26
• C./30
• D./12
• E./28

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Where would you expect to find a P router in a service provider's network?

• A.At the edge of the provider's network facing the customer.
• B.At the edge of the customer's network facing the provider.
• C.On the customer premises.
• D.In the core of the providers network.

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In an MPLS network, which device is responsible for taking an unlabeled packet and encapsulating it with an MPLS label?

• A.Ingress Label Edge Router
• B.Egress Label Edge Router
• C.Label Switching Router
• D.Next Hop Router

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