What is the purpose of Inverse ARP?
Click on the arrows to vote for the correct answerA. B. C. D. E. F.
Inverse ARP (Address Resolution Protocol) is used in Frame Relay networks to resolve the mapping between a Layer 3 (network layer) address, such as an IP address, to a Layer 2 (data link layer) address, such as a MAC address or DLCI (Data Link Connection Identifier).
The purpose of Inverse ARP is to allow a device on a Frame Relay network to discover the DLCI associated with a particular destination IP address, without requiring manual configuration of the mapping between IP and DLCI addresses. This is important because Frame Relay networks can have many connections and maintaining a manual mapping of IP to DLCI addresses can be difficult and time-consuming.
Therefore, the correct answer to this question is option D: to map a known DLCI to an IP address.
Option A is incorrect because it describes the function of ARP, not Inverse ARP. ARP maps a known IP address to a MAC address.
Option B and E are also incorrect because SPID (Service Profile Identifier) is not used in Frame Relay networks.
Option C and F are incorrect because they describe the function of ARP, not Inverse ARP, and they also map IP addresses to MAC addresses or DLCI addresses respectively.