1.)Explain the operation of the Address Resolution Protocol? 2.)Discuss the trad
ID: 3603309 • Letter: 1
Question
1.)Explain the operation of the Address Resolution Protocol?
2.)Discuss the trade-offs between bus-based and switched Ethernet. State the various
conditions under which one or the other would be preferred and explain why?
3.)Before effective Ethernet switching existed, some network designers used an
alternative bus collision avoidance protocol known as the token bus protocol.
With the token bus protocol, a ‘‘token’’ made up of a short, standard string of 1s and 0s was circulated constantly in a round robin fashion among the NIUs
attached to the bus. NIUs did not hold the token; they simply passed it without
delay to the next NIU in the chain. An NIU was only allowed to place a message
on the bus when it possessed the token. After the message was delivered, the
token was again put into circulation. No NIU was allowed to use the token again
until the token had circulated to every other NIU at least once.
Underwhat conditionswould this protocol performmore satisfactorily than
CSMA/CD? Explain. Under what conditions is CSMA/CD preferable? Explain.
answer all of them please
Explanation / Answer
Address Resolution Protocol (ARP):
Operation:
1. When a device want to communicatie with another device, First soruce device will check its ARP cache in MAC Address of destination device. If is found it will use MAC Address for communication.
To check local ARP cache, type arp -a in command prompt.
2. If ARP is not local cache, Now source machine will generate ARP request message and it puts sender hardware address its own data link layer address and sender protcol address as IPv4 Address.
3. Soruce broadcast the ARP request message to local network.
4. Now the message will be recieved by all the devices in the LAN. Now each device will compare with target protocol address with its own protocol address.
Device will drop who do not match.
5. If the target device is found, it will generate an ARP reply message. It takes sneder hardwar adress and send protocol address from ARP message request and will use to this values to send message.
6. Now destination device will update its ARP cache.
7. Destination device send ARP reply message and it is unicast but not broadcast.
8. Now soruce machine will process ARP reply from destionation and store destination Hard war address as Layer 2 address.
9. Soruce machine will update ARP cache..
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