Table of Contents
- 1 What maps IP addresses into its corresponding MAC addresses?
- 2 Why do hosts have both IP addresses and MAC addresses?
- 3 What is used for converting IP to MAC address?
- 4 What are MAC addresses used for?
- 5 Is MAC Address Layer 2 or Layer 3?
- 6 What is the classless IP address notation for the wireless subnet?
What maps IP addresses into its corresponding MAC addresses?
Address Resolution Protocol (ARP) The Address Resolution Protocol is a layer 2 protocol used to map MAC addresses to IP addresses. All hosts on a network are located by their IP address, but NICs do not have IP addresses, they have MAC addresses. ARP is the protocol used to associate the IP address to a MAC address.
How do MAC addresses and IP addresses work together?
A Media Access Control (MAC) address identifies a unique “network interface” in a device. While IP addresses are assigned by ISPs and can be re-assigned as devices connect and disconnect, MAC addresses are tied to a physical adapter and are assigned by manufacturers.
Why do hosts have both IP addresses and MAC addresses?
So again, IP Addresses are logical and routeable addresses. And that’s why computers have both MAC Addresses and IP Addresses. 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.
What is router MAC?
A router generally has three MAC addresses: LAN address, WAN address, and the address displayed on the main router’s web-based management page. The LAN MAC address is printed on the router’s information label and used to communicate with computer when the router is connected to the computer with an Ethernet cable.
What is used for converting IP to MAC address?
Address Resolution Protocol (ARP) is used to convert IP address to Mac Address.
What is IP address vs MAC address?
MAC Address and IP Address
| MAC Address | IP Address |
|---|---|
| MAC address is a unique identifier that is assigned to a Network Interface Controller/ Card. | An IP address is an address that helps you to identify a network connection. |
What are MAC addresses used for?
A media access control address (MAC address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth.
Which MAC address belongs to a certain IP address?
MAC addresses are on Layer-2, IP on Layer-3 of the OSI model. For IPv4 ARP is used to find out which MAC (Layer-2) address belongs to a certain IP (Layer-3) address. For IPv6 ICMPv6 (Neighbor Discovery) is used.
Is MAC Address Layer 2 or Layer 3?
MAC addresses are layer-2 addresses, IP addresses are layer-3 addresses, and ports are layer-4 addresses. MAC addresses are not in the packet headers, they are in the frame headers. Only layer-3 addresses are in the packet headers. Ports are in the segment headers.
What is the difference between a MAC address and a port?
Ports are in the segment headers. MAC addresses are only significant on a LAN. They are in the frame headers, and frames are stripped at layer-3 boundaries (routers).
What is the classless IP address notation for the wireless subnet?
The classless IP address notation is 128.198.80.0/24. How many IP addresses can be assigned to machines in the wireless subnet (assume one is used by the router for the grateway interface, one used for broadcast, and one used for identifying the subnet itself)? Ans: 2^(32-24) – 3=256-3=253.