Which DHCP packet does a client use to extend its IP address lease when 87.5% of the lease time has expired?

Which DHCP packet does a client use to extend its IP address lease when 87.5% of the lease time has expired?

• A. DHCP Discover broadcast packet
• B. DHCP Release unicast packet
• C. DHCP Request broadcast packet
• D. DHCP Request unicast packet

Answer: (C)

When a DHCP client wishes to extend its IP address lease, it sends a DHCP Request packet. Specifically, this packet is used in the context of renewing the lease when a significant portion of the lease time has already expired, typically around 87.5%. At this point, the client is acknowledging that it is still utilizing the assigned IP address and is seeking to extend the lease period with the DHCP server. The DHCP Request packet contains information regarding the client's current IP address and explicitly requests to renew that lease. This process allows the client to maintain its network connectivity without having to go through the entire DHCP discover and offer process again, thus providing a smoother user experience. In this context, the other options are less applicable. A DHCP Discover packet is used when a client is seeking to obtain an IP address for the first time; a DHCP Release packet is sent when a client is relinquishing its lease and no longer wishes to use the assigned IP; and while a DHCP Request broadcast packet could be used in certain scenarios, the unicast transmission towards the DHCP server is the standard practice for lease renewal requests following the proper lease timeline.

When a DHCP client wishes to extend its IP address lease, it sends a DHCP Request packet. Specifically, this packet is used in the context of renewing the lease when a significant portion of the lease time has already expired, typically around 87.5%. At this point, the client is acknowledging that it is still utilizing the assigned IP address and is seeking to extend the lease period with the DHCP server.

The DHCP Request packet contains information regarding the client's current IP address and explicitly requests to renew that lease. This process allows the client to maintain its network connectivity without having to go through the entire DHCP discover and offer process again, thus providing a smoother user experience.

In this context, the other options are less applicable. A DHCP Discover packet is used when a client is seeking to obtain an IP address for the first time; a DHCP Release packet is sent when a client is relinquishing its lease and no longer wishes to use the assigned IP; and while a DHCP Request broadcast packet could be used in certain scenarios, the unicast transmission towards the DHCP server is the standard practice for lease renewal requests following the proper lease timeline.