Why physical address is needed when ip address is present?

Savion Kutch asked a question: Why physical address is needed when ip address is present?
Asked By: Savion Kutch
Date created: Tue, Jul 6, 2021 10:10 AM

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Those who are looking for an answer to the question «Why physical address is needed when ip address is present?» often ask the following questions:

💻 Is ip address is a physical address?

The _____ address, also known as the link address, is the address of a node as definedby its LAN or WAN. Ethernet uses a _____ physical address that is imprinted on the network interface card(NIC). In _____ forwarding, the destination address is a network address in the routing table.

💻 What is difference between ip address and physical address?

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.

💻 Does network layer use physical address?

Layer 3: The Network Layer

One important function of the Network Layer is logical addressing. Every network device has a physical address called a MAC address, which is assigned to the device at the factory. When you buy a network interface card to install in a computer, the MAC address of that card can't be changed.

Question from categories: internet tcp ip network fundamentals

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The internet is now running-out of IP addresses since there are only 4 bytes used - this is why some think when IP version 6 arrives, the Internet will segment. 0 Votes Share Flag

The IP address is required on layer 3. You require it to communicate with computers on different subnets and devices.The IP Address verifies "where" the device is located within a network. The IP addresses and Mac Addresses are used in tandem.

For addresses of physical locations, see Address. In computing, a physical address (also real address, or binary address ), is a memory address that is represented in the form of a binary number on the address bus circuitry in order to enable the data bus to access a particular storage cell of main memory, or a register of memory-mapped I/O device.

Short answer, a physical address (also known as a MAC address) is needed because it ties the IP address to a particular device. Without it, you’d have no way of sending and receiving IP traffic.

Needed for what? MAC address identifies network interface, while IP address is just a logical identification component. Single physical interface may have multiple IP addresses at the same time, but only one MAC address (unless it's a bridging interface for multiple VM interfaces).

In computer networks, the MAC address (an acronym for Media Access Control) is an identifier for devices. It is a 48-bit identifier consisting of 6 hexadecimal blocks that uniquely corresponds to a network card or device. It is also called as the physical address. It is unique for every device being used.

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.

Why physical address is needed when IP address is present? Without a physical address, you will not be able to access a network outside the LAN that you are on.

The IP address actually contains two pieces of information: the network address and the node address. To know where the network address ends and the node address begins, a subnet mask is used to indicate the number of bits in the IP address assigned to the network address and is usually designated as a slash and a number, such as /24. If the example address of 192.168.1.254 has a subnet mask of /24, we know that the network address is 24 bits, or 192.168.1, and the node address is 254.

Without a physical address, you will not be able to access a network outside the LAN that you are on. This is simply due to the fact that the computer on another LAN would not know where to forward the requested information. Your IP address work on the Internet Protocol within routers and switches, and associates it finding with your local machine (computer) by way of its mac address (physical address). Notice, your computer does not have an IP address, when you log on to the Internet a DHCP server issue you a leased IP address which is associated with your MAC for the duration of time that your computer is log on to the NET. There are quite a few reasons why your computer would not be network operable without a MAC address, this is just one of them.

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