Router R5 receives four route updates for the same prefix 10.10.10.1/32. Which of the four routes will be installed in R5's routing table?

• A.Route learned from router R4.
• B.Route learned from router R2.
• C.Router learned from router R3.
• D.Route learned from router R1.

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What problems was Spanning Tree Protocol (STP) primarily designed to solve? (Choose two):

• A.Providing path redundancy.
• B.Preventing loops.
• C.Handling collisions.
• D.Allowing flooding of multicast traffic.

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What happens when a switch receives an Ethernet frame with unknown source and destination MAC addresses?

• A.The frame is silently discarded.
• B.The source MAC address is saved in the MAC FDB, and the frame is discarded.
• C.The source MAC address is saved in the MAC FDB, and the frame is flooded to all ports except the receiving port.
• D.The source and destination MAC addresses are saved in the MAC FDB, and the frame is flooded to all ports.

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Which of the following is TRUE regarding routers R2 and R3 in the pictured MPLS network?

• A.Router R2 pushes labels for LSP A, and R3 swaps labels for LSP A.
• B.Router R2 swaps labels for LSP A, and R3 pops labels for LSP A.
• C.Router R2 and R3 swap labels for LSP A and LSP B.
• D.Router R2 and R3 push labels for LSP A and LSP B, respectively.

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What happens when a switch receives an Ethernet frame with unknown source and destination MAC addresses?

• A.The source and destination MAC addresses are saved in the MAC FDB, and the frame is flooded to all ports.
• B.The source MAC address is saved in the MAC FDB, and the frame is discarded.
• C.The source MAC address is saved in the MAC FDB, and the frame is flooded to all ports except the receiving port.
• D.The frame is silently discarded.

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