Last Updated on October 29, 2020 by Admin
A company uses DHCP servers to dynamically assign IPv4 addresses to employee workstations. The address lease duration is set as 5 days. An employee returns to the office after an absence of one week. When the employee boots the workstation, it sends a message to obtain an IP address. Which Layer 2 and Layer 3 destination addresses will the message contain?
- FF-FF-FF-FF-FF-FF and 255.255.255.255
- both MAC and IPv4 addresses of the DHCP server
- MAC address of the DHCP server and 255.255.255.255
- FF-FF-FF-FF-FF-FF and IPv4 address of the DHCP server
Answers Explanation & Hints:
When the lease of a dynamically assigned IPv4 address has expired, a workstation will send a DHCPDISCOVER message to start the process of obtaining a valid IP address. Because the workstation does not know the addresses of DHCP servers, it sends the message via broadcast, with destination addresses of FF-FF-FF-FF-FF-FF and 255.255.255.255.