COMPUTER FUNDAMENTALS

COMPUTER NETWORKS AND COMMUNICATIONS

NETWORK TOPOLOGIES AND PROTOCOLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A bank uses a local area network to connect all the computers in its head office.Computers in the network can be identified using both IP addresses and MAC addresses.Describe the difference between IP addresses and MAC addresses.
A
-IP addresses can be changed / are allocated as needed-MAC addresses can’t be changed / every device has a fixed MC address
B
-IP(v4) addresses are 4 bytes long-MAC addresses are 6 bytes long
C
-IP(v4) addresses are normally written in denary-MAC addresses are normally written in Hex
D
-IP addresses are configured by software-MAC addresses are configured in hardware
E
-IP addresses are used for routing across a WAN / internet-MAC addresses are only used within the LAN
Explanation: 

Detailed explanation-1: -The physical address–which is also called a media access control, or MAC, address–identifies a device to other devices on the same local network. The internet address–or IP address–identifies the device globally. A network packet needs both addresses to get to its destination.

Detailed explanation-2: -MAC Address stands for Media Access Control Address. IP Address stands for Internet Protocol Address. MAC Address ensure that physical address of the computer is unique. IP Address is a logical address of the computer and is used to uniquely locate computer connected via a network.

Detailed explanation-3: -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-4: -MAC address is a 6-bytes hexadecimal address. IP address is a 4-bytes (IPv4) or 6-bytes(IPv6) address. The MAC address of a device can be figured out using ARP Protocol. The IP address of a device is figured out using RARP protocol.

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