What is the protocol number for OSPF in the IP header?

• A.OSPF uses UDP, so the protocol number is 17.
• B.OSPF has its own protocol number of 89.
• C.OSPF uses TCP, so the protocol number is 6.
• D.OSPF does not use IP.

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Which of the following commands can be used to display the number of SPF computations that have been performed on a router?

• A.show router ospf status
• B.show router ospf area <area-id>
• C.show router ospf neighbor
• D.show router ospf interface

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A BGP session is in OpenConfirm state. Which of the following messages must be received to transition to Established state?

• A.Keepalive
• B.Open
• C.Notification
• D.Update

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Which of the following statements regarding Internet Exchange Points is FALSE?

• A.They provide services at the local, regional and continental levels.
• B.They provide both peering and transit services.
• C.They provide services only to Tier 1 service providers.
• D.They can be either public or private.

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What class of attribute is Originator_ID?

• A.Well-known mandatory.
• B.Well-known discretionary.
• C.Optional transitive.
• D.Optional non-transitive.

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