Which of the following protocols is used by a host that knows its own MAC (Media Access Control) address to query a server for its own IP address?
Which of the following protocols is used by a host that knows its own MAC (Media Access Control) address to query a server for its own IP address?
The protocol used by a host that knows its own MAC (Media Access Control) address to query a server for its own IP address is RARP (Reverse Address Resolution Protocol). RARP is specifically designed for this purpose, where the host sends a RARP request to a RARP server, which then responds with the host's IP address. ARP (Address Resolution Protocol) works the other way around, translating an IP address into a MAC address. DNS (Domain Name System) translates domain names into IP addresses, and RDNS (Reverse Domain Name System) translates IP addresses into domain names. Therefore, RARP is the only protocol that matches the given scenario.
I took the exam twice, and these questions were not even in the ball park for the GSEC. A moderator may not show my coment here.
The answer is A. RARP. RARP (Reverse Address Resolution Protocol) is a protocol used by a host that knows its own MAC address to query a server for its own IP address. The RARP server maintains a table of MAC addresses and their corresponding IP addresses. When a host sends a RARP request, the RARP server responds with the host's IP address. ARP (Address Resolution Protocol) is used by a host that knows its own IP address to query a server for the MAC address of a destination host. The ARP server maintains a table of IP addresses and their corresponding MAC addresses. When a host sends an ARP request, the ARP server responds with the destination host's MAC address. DNS (Domain Name System) is used to translate domain names into IP addresses. It is not used to resolve MAC addresses to IP addresses. RDNS (Reverse Domain Name System) is used to translate IP addresses into domain names. It is not used to resolve MAC addresses to IP addresses. In conclusion, the RARP protocol is used by a host that knows its own MAC address to query a server for its own IP address.