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    PDF Notes: AITU_2ndTerm_CompNet_L2_Lect2

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    What is the role of a MAC address?

    Used for NIC to NIC communications on the same Ethernet network.

    What is the purpose of ARP?

    Associates IPv4 addresses with MAC addresses.

    How does ARP function when sending a frame?

    Searches ARP table for destination IPv4 and MAC address.

    What happens if an ARP table entry is not found?

    An ARP request is sent to discover the MAC address.

    How does the MAC address differ from the IP address?

    MAC is a physical address; IP is a logical address.

    What is the consequence of ARP broadcasting?

    Can reduce network performance due to excessive traffic.

    What command displays the ARP table on a Cisco router?

    show ip arp

    What is the function of the ARP cache timer?

    Removes entries after a specified period.

    What does the ping command test?

    Connectivity between hosts using ICMP messages.

    What is a potential issue with ARP replies?

    They can be spoofed in ARP poisoning attacks.

    What does ICMPv6 do in relation to IPv6?

    Associates IPv6 addresses with MAC addresses.

    What command displays the ARP table on a Windows 10 PC?

    arp -a