COMPUTER NETWORKING

DATA LINK LAYER WIRED NETWORKS

WIRED LANS ETHERNET PROTOCOL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If the encapsulated data within an Ethernet broadcast frame is an IPv4 packet, the host portion of the destination address contains ____
A
All 1s in binary
B
All 0s in binary
C
No value
D
Every address in the LAN
Explanation: 

Detailed explanation-1: -What will a host on an Ethernet network do if it receives a frame with a unicast destination MAC address that does not match its own MAC address? It will discard the frame.

Detailed explanation-2: -This 6-byte field identifies the originating NIC or interface of the frame. This 2-byte field identifies the upper-layer protocol encapsulated in the Ethernet frame.

Detailed explanation-3: -The switch makes its forwarding decisions based solely on the Layer 2 Ethernet MAC addresses. An Ethernet switch examines its MAC address table to make a forwarding decision for each frame, unlike legacy Ethernet hubs that repeat bits out all ports except the incoming port.

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