5.3 DHCP server configuration
DHCP Discover (D) - correct answer ✔✔The client begins by sending out a DHCP Discover frame to
identify DHCP servers on the network.
DHCP Offer (O) - correct answer ✔✔A DHCP server that receives a Discover request from a client
responds with a DHCP Offer advertisement, which contains an available IP address. If more than one
DHCP server responds with an offer, the client usually responds to the first offer it receives.
DHCP Request (R) - correct answer ✔✔The client accepts the offered IP address by sending a DHCP
request back to the DHCP server.
DHCP ACK (A) - correct answer ✔✔The DHCP server responds to the request by sending a DHCP ACK
(acknowledgement). At this point, the IP address is leased to and configured on the DHCP client.
DHCP (Dynamic Host Configuration Protocol) - correct answer ✔✔The dynamic host configuration
protocol (DHCP) centralizes management of IP addressing in a network by allowing a server to
dynamically assign IP addresses to clients. DHCP also allows mobile users, who move from network to
network, to easily obtain an IP address appropriate for each network they connect to.
If the DHCP server is on a different subnet, - correct answer ✔✔additional configuration steps are
required, since network routers drop the DHCP broadcast frames by default.
keep in mind the following when configuring a DHCP server: - correct answer ✔✔The DHCP service
needs to auto-start when the server boots.
The server must have a static IP address.
A MAC reservation is an association of a MAC address with a specific IP address. In other words, the
client with the specified MAC address is assigned the same IP address each time it requests an address.
An IP reservation means you program MAC addresses into the DHCP server. When the DHCP server sees
a certain host requesting an IP address based on its MAC, it will give you a specific IP address.
DHCP Discover (D) - correct answer ✔✔The client begins by sending out a DHCP Discover frame to
identify DHCP servers on the network.
DHCP Offer (O) - correct answer ✔✔A DHCP server that receives a Discover request from a client
responds with a DHCP Offer advertisement, which contains an available IP address. If more than one
DHCP server responds with an offer, the client usually responds to the first offer it receives.
DHCP Request (R) - correct answer ✔✔The client accepts the offered IP address by sending a DHCP
request back to the DHCP server.
DHCP ACK (A) - correct answer ✔✔The DHCP server responds to the request by sending a DHCP ACK
(acknowledgement). At this point, the IP address is leased to and configured on the DHCP client.
DHCP (Dynamic Host Configuration Protocol) - correct answer ✔✔The dynamic host configuration
protocol (DHCP) centralizes management of IP addressing in a network by allowing a server to
dynamically assign IP addresses to clients. DHCP also allows mobile users, who move from network to
network, to easily obtain an IP address appropriate for each network they connect to.
If the DHCP server is on a different subnet, - correct answer ✔✔additional configuration steps are
required, since network routers drop the DHCP broadcast frames by default.
keep in mind the following when configuring a DHCP server: - correct answer ✔✔The DHCP service
needs to auto-start when the server boots.
The server must have a static IP address.
A MAC reservation is an association of a MAC address with a specific IP address. In other words, the
client with the specified MAC address is assigned the same IP address each time it requests an address.
An IP reservation means you program MAC addresses into the DHCP server. When the DHCP server sees
a certain host requesting an IP address based on its MAC, it will give you a specific IP address.
