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2703A1 Discussion Sheet

2703A1 Discussion Sheet - 2703A1 Discussion Sheet SHORT...

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2703A1 Discussion Sheet SHORT ANSWER 1. ANS: Source port - Indicates the port number at the source node. Destination port - Indicates the port number at the destination node. Sequence number - Identifies the data segment’s position in the stream of data segments already sent. Acknowledgment number (ACK) - Confirms receipt of the data via a return message to the sender. REF: 158 2. ANS: Differentiated Services (DiffServ) Field - Informs routers what level of precedence they should apply when processing the incoming packet. Total length —Identifies the total length of the IP datagram, including the header and data, in bytes. Flags - Indicates whether a message is fragmented and, if it is fragmented, whether this datagram is the last in the fragment. Time to Live (TTL) - Indicates the maximum time that a datagram can remain on the network before it is discarded. REF: 164 3. ANS: The main difference between the two protocols is that RARP requests and responses are not routable. Thus, if you wanted to use RARP to issue IP addresses, you would have to install a separate RARP server for every LAN. BOOTP, on the other hand, can traverse LANs. Also, RARP is only capable of issuing an IP address to a client; BOOTP has the potential to issue additional information, such as the client’s subnet mask. REF: 173 4. ANS: To reduce the time and planning spent on IP address management - Central management of IP addresses eliminates the need for network administrators to edit the TCP/IP configuration on every network workstation, printer, or other device. To reduce the potential for errors in assigning IP addresses - With DHCP, almost no possibility exists that a workstation will be assigned an invalid address or that two workstations will attempt to use the same IP address.
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