ARP (Address Resolution Protocol) isa)A TCP/IP protocol used to dynami...
ARP (Address Resolution Protocol) is:
- A TCP/IP protocol used to dynamically bind a high level IP address to a low-level physical hardware address:
- ARP is a protocol used in TCP/IP networks to map an IP address to a corresponding physical MAC address.
- It allows devices on a local network to communicate with each other using their hardware addresses.
- ARP resolves IP addresses to MAC addresses on the same network segment.
- A TCP/IP high-level protocol for transferring files from one machine to another:
- This statement is incorrect. ARP is not used for file transfer; it is specifically used for address resolution.
- A protocol used to monitor computers:
- This statement is incorrect. ARP is not used for monitoring computers. It is solely used for address resolution.
- A protocol that handles error and control messages:
- This statement is incorrect. ARP is not responsible for handling error and control messages. It is solely used for address resolution.
Conclusion:
The correct answer is A: A TCP/IP protocol used to dynamically bind a high-level IP address to a low-level physical hardware address. ARP is essential for communication within a local network, allowing devices to find each other using their IP and MAC addresses.
ARP (Address Resolution Protocol) isa)A TCP/IP protocol used to dynami...
ARP (Address Resolution Protocol) is a TCP/IP protocol used to dynamically bind a high-level IP address to a low-level physical hardware address. It plays a crucial role in facilitating communication between devices on a local area network (LAN).
Overview of ARP:
ARP operates at the data link layer of the TCP/IP protocol stack. Its primary purpose is to map an IP address to a corresponding MAC address. Whenever a device wants to send data to another device on the same network, it needs to know the MAC address of the destination device. ARP helps in obtaining this information by resolving the IP address to its corresponding MAC address.
Working of ARP:
1. ARP Request: When a device wants to communicate with another device, it first checks its ARP cache (a table that stores IP-MAC mappings) for the MAC address of the destination IP. If the MAC address is not found in the cache, the device sends an ARP request broadcast message to all devices on the network, asking "Who has this IP address?"
2. ARP Reply: The device with the IP address mentioned in the ARP request responds with an ARP reply message, providing its MAC address. This reply is unicast to the requesting device.
3. ARP Cache Update: The requesting device receives the ARP reply and updates its ARP cache with the IP-MAC mapping. This mapping is then used for future communication with the device having that IP address.
Benefits and Importance of ARP:
- ARP allows devices to communicate with each other using IP addresses, which are more convenient for humans to remember, while the actual data transmission occurs at the hardware level using MAC addresses.
- It ensures efficient and reliable data transmission by resolving IP addresses to MAC addresses.
- ARP helps in minimizing network congestion as it reduces the need for broadcasting every data packet to all devices on the network.
Conclusion:
ARP is a crucial protocol in TCP/IP networks as it enables the translation of IP addresses to MAC addresses, facilitating communication between devices. Through ARP, devices can dynamically discover and maintain the necessary mappings, ensuring efficient data transmission within a LAN.
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