Complete the following sentence: The introduction of the subnet address added another:

• A.Layer of hierarchy in the addressing structure.
• B.16-bit number to accompany the IP address.
• C.Class to the classful addressing system.
• D.4,294,967,296 addresses to the IP address space.

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What next-hop address should router R2 use to reach a host on 192.168.2.0/24?

• A.10.2.3.1
• B.10.1.1.2
• C.10.1.1.1
• D.10.2.3.2

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In the diagram, R3 receives an LSA with the sequence number 111 from R7 and then receives another copy of the LSA with a sequence number 112 from R1. What does R3 do with the LSA from R1?

• A.R3 installs the LSA received from R1 in its link state database and floods a copy to its neighbors.
• B.R3 discards the LSA received from R1 and sends a copy of the LSA from its link state base to R1.
• C.R3 installs the LSA received from R1 in its link state database, sends an ACK to R1 and floods a copy to its neighbors.
• D.R3 discards the LSA received from R1 and sends an ACK to R1.

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Based on the network diagram (click on exhibit), Router 1 installs the network D in its routing table, based on a dynamic routing update from Router 2. Which of the following describes the information that will be installed in the routing table?

• A.172.16.9.0/24 next-hop 10.10.10.1
• B.172.16.9.0.24 next-hop 10.10.10.3
• C.Any of the above
• D.172.16.9.0/24 next-hop 10.10.10.2

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Which statement accurately explains the purpose of the TCP protocol and what it provides?

• A.The primary purpose of TCP is to define the correct format for the application layer such as JPEG or HTML.
• B.The primary purpose of TCP is to provide reliable communications between application services.
• C.The primary purpose of TCP is to provide IP routing between application services.
• D.The primary purpose of TCP is to provide unreliable communications between application services

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