In Figure 9.7, do you think that system A should first check its cache for mapping from

Question:

In Figure 9.7, do you think that system A should first check its cache for mapping from N2 to L2 before even broadcasting the ARP request?

Figure 9.7

Figure 9.7 ARP operation LAN System A System B Request NLa Request: Looking for link-layer address of a node with IP address N2 a. ARP request is broadcast LAN System A System B N¡L, Reply Reply: I am the node and my link-layer address is L2 b. ARP reply is