This field specifies the network link protocol type.
Arp translates IP numbers into hardware addresses.
All hosts on the physical network receive this packet, and the one with the given IP number responds. Then the original querring host knows the physical address of the target host.
Does not use IP; uses's physical frames. Keep a cache of recently received translations.
Remember that these addresses are quite small, and the space needed to store them is also small. Then every host who receives a broadcast ARP request can know the address translation of the sender. This is especially imporant for the receiver of the broadcast.
There are two parts. The second part fills the cache with mapping upon request from the first part. Can you fool ARP software. Yes, by poluting the network with your own answers. To send machine A some data, you broadcast seeking machine A. Would it not be easier just to broadcast the data.
That would for sure reduce the total number of packets sent, at the cost of changing many unicasts to broadcasts. What if someone answers an ARP request for you, and lies about who they are?
Diskless clients don't have a place to store there IP number. Rarp translates machines addresses into IP numbers. The client broadcasts a RARP packet with an ethernet broadcast address, and it's own physical address in the data portion.
The server responds by telling the client it's IP address. Note there is no name sent. Also note there is no security. Don't let an RARP client retry indefinitlly.
That just causes wasted broadcasts. Have a backup RARP server or two, on random time delays. When should the server broadcast the answer instead of target it? What gets put in the rest of the packet since there is a large minimum packet length? Bootp translates machines addresses into IP numbers.
Because it uses IP packets, application level programmers can write bootp servers. The client broadcasts a BOOTP packet with source and destination IP broadcast addresses all 1'sand it's own physical address in the data portion.
The server responds by telling the client it's actual IP address, and some other info see page Buy Brocade TurboIron 24X TIX-AC Managed Switch: Switches - attheheels.com FREE DELIVERY possible on eligible purchases. Answer C is correct. ff:ff:ff:ff:ff:ff is the ethernet broadcast address used in ARP and RARP requests.
Answer A is incorrect because this represents a netmask. Answer B is incorrect because this is an example of a specific ethernet address that would identify a single interface.
Answer D is. First, there was RARP (Reverse ARP), later came BOOTP (Bootstrap Protocol). RARP is an old protocol and we don’t use it anymore to assign IP addresses to hosts. It . Reverse Address Resolution Protocol (RARP) – Reverse ARP is a networking protocol used by a client machine in a local area network to request its Internet Protocol .
The Reverse Address Resolution Protocol (Reverse ARP or RARP), like InARP, translates Layer 2 addresses to Layer 3 addresses. However, in ARP the requesting station queries the Layer 3 address of another node, whereas RARP is used to obtain the Layer 3 address of the requesting station itself for address configuration purposes.
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