Which of the following statements about ARP request and ARP response messages is TRUE?

• A.An ARP request is a broadcast message, while an ARP response is a unicast message.
• B.An ARP request is a unicast message, while an ARP response is a broadcast message.
• C.Both ARP request and response messages are broadcast messages.
• D.Both ARP request and response messages are unicast messages.

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Public IP addresses are globally coordinated by which organization?

• A.IEEE
• B.IANA
• C.Network Solutions INC
• D.IETF
• E.ITU-T

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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 unreliable 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 reliable communications between application services.

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Which of the following best describes the function of an ARP cache within the same subnet?

• A.Used by IP to map an unknown IP address to the known hardware address of the distant host.
• B.Adds only an IP address entry for an unknown device on the same subnet.
• C.Transmits ICMP messages to multiple hosts with unknown IP addresses.
• D.Resolves the MAC address of a host device given its IP address.

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How does the Transport Layer identify which application is to receive the data?

• A.Using the IP address of the packet.
• B.Using the MAC address of the frame.
• C.Using port numbers.
• D.Using Connection Identifier Numbers (CIN).

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