In an IP datagram, which of the following fields identifies the receiving application?

• A.The protocol field of the transport layer header.
• B.The port field of the transport layer header.
• C.The protocol field of the network layer header.
• D.The port field of the network layer address.

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What command could be used to verify proper configuration of a static route in an Nokia 7750 SR router?

• A.Show router routing-table
• B.Show route-table
• C.Show static
• D.Show router route-table

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A router receives an OSPF database description packet from a neighbor that references an LSA, which is already in the router's LSDB. The sequence number in the DBD packet is lower than the sequence number of the LSA in the LSDB.
What action does the router take?

• A.The router updates the information in its LSDB with the information received from its neighbor.
• B.The router takes no action.
• C.The router sends a link-state request to its neighbor.
• D.The router sends a link-state acknowledgement to its neighbor.
• E.The router sends a link-state update to its neighbor.

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Click the exhibit button.

The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?

• A.The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.
• B.The adjacency state is two way because both routers have received a database description packet.
• C.The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.
• D.The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.

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