cal address EtherAddr. What would happen if, when you manually added an entry, you entered the correct IP address, but the wrong Ethernet address for that remote interface

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The Address Resolution Protocol ARP cache maintained by ARP keeps a record of IP addresses and their corresponding Media Access Control, MAC address

The correct response to what would happen if the wrong EtherAddr is

entered into the arp-s InetAddr EtherAddr command is that;

The system will not be able to connect to the IP address linked to the wrong Ethernet address.

The reason the above response is correct is as follows:

Characteristics of the ARP protocol;

The ARP protocol is a protocol that has a high level of control such that

the reply is trusted and can be used to redirect traffic through spoofing of

the responses to ARP which are then stored in the cache.

Functioning of the arp -s InetAddr EtherAddr command;

The command arp -s InetAddr EtherAddr command inputs a manual entry

into the ARP cache that works to assign the inputted IP address in InetAddr

to the MAC physical address in EtherAddr.

The ARP provides the translation from physical MAC addresses of Layer 2

to  the IP address of Layer 3 by mapping the MAC address to the IP

address.

Solution:

What would happen if, when you manually added an entry, you entered the correct IP address, but the wrong Ethernet address for that remote interface is as follows;

When the wrong Ethernet address is entered in the arp -s command, the

IP-address is resolved as belonging to the wrong Ethernet  or MAC

address, and if the address does not exist, it will not be possible to

connect to the correct or desired IP address.

Learn more about ARP here:

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