COMPUTER NETWORKING

WIRELESS NETWORKS AND MOBILE IP

WIRELESS NETWORKS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why do computers need a MAC address?
A
So the internet knows where to deliver data
B
So the postman knows where to deliver a letter
C
So a network knows where to send data
D
So the servers know where to deliver letters to
Explanation: 

Detailed explanation-1: -MAC addresses are used to identify machines within the same broadcast network on layer 2, while IP addresses are used on layer 3 to identify machines throughout different networks.

Detailed explanation-2: -MAC Addresses handle the physical connection from computer to computer while IP Addresses handle the logical routeable connection from both computer to computer AND network to network.

Detailed explanation-3: -To communicate with a Wi-Fi network, a device must identify itself to the network using a unique network address called a Media Access Control (MAC) address.

Detailed explanation-4: -A router doesn’t know nor does it care about the MAC address of a remote destination. MAC addresses are used only for delivery in layer-2 segments like Ethernet within a directly attached network. Those addresses are of no consequence to any node outside that segment.

There is 1 question to complete.