COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK PROTOCOLS AND STANDARDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is never passed on when a packet is routed?
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TCP port number
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IP address
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MAC address
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None of the above
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Explanation:
Detailed explanation-1: -MAC address never crosses its broadcast domain. If ARP is not resolved then ARP will be resolved first. If the destination host is present in the same network, then the packet is delivered directly to the destination host.
Detailed explanation-2: -If MAC were to be used for routing, your routing table would contain routes to each node on network because MAC addresses are different for every manufacturer. IP is like a standard platform for network devices from different manufacturers to communicate.
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