COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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IP address
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ARP address
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Post code
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MAC address
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Detailed explanation-1: -The switch uses the MAC address to identify which device’s outgoing packets are being sent, and where to deliver incoming packets. The MAC address identifies the physical device and doesn’t change, while the network layer (Layer 3) IP address, can be assigned dynamically to a device and change over time.
Detailed explanation-2: -As the switch receives a data packet, it reads the source address and maps the port number to the MAC address in that source field. The following diagram shows what a MAC Address Table entry looks like if Workstation A is plugged into Port 1 of our switch and sends a frame.
Detailed explanation-3: -When the IPv4 broadcast packet is encapsulated in the Ethernet frame, the destination MAC address is the broadcast MAC address FF-FF-FF-FF-FF-FF in hexadecimal (or 48 1s in binary). DHCP for IPv4 is an example of a protocol that uses Ethernet and IPv4 broadcast addresses.