Cisco 2, Module 7

A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server? (Choose two.)

• DHCPNAK

• DHCPOFFER

• DHCPDISCOVER

• DHCPACK

• DHCPREQUEST

When a client is requesting an initial address lease from a DHCP server, why is the DHCPREQUEST message sent as a broadcast?

• 1. The client does not have a MAC address assigned yet, so it cannot send a unicast message at Layer 2.

• 1. The DHCP server may be on a different subnet, so the request must be sent as a broadcast.

• 1. The client does not yet know the IP address of the DHCP server that sent the offer.

• 1. The client may have received offers from multiple servers, and the broadcast serves to implicitly decline those other offers.

What is the reason why the DHCPREQUEST message is sent as a broadcast during the DHCPv4 process?

• 1. to notify other DHCP servers on the subnet that the IP address was leased

• 1. to notify other hosts not to request the same IP address

• 1. for routers to fill their routing tables with this new information

• 1. for hosts on other subnets to receive the information

How is a DHCPDISCOVER transmitted on a network to reach a DHCP server?

• 1. A DHCPDISCOVER message is sent with the IP address of the DHCP server as the destination address.

• 1. A DHCPDISCOVER message is sent with the broadcast IP address as the destination address.

• 1. A DHCPDISCOVER message is sent with a multicast IP address that all DHCP servers listen to as the destination address.

• 1. A DHCPDISCOVER message is sent with the IP address of the default gateway as the destination address.

Which destination IPv4 address does a DHCPv4 client use to send the initial DHCP Discover packet when the client is looking for a DHCP server?

• the IP address of the default gateway

• 255.255.255.255

• 127.0.0.1

• 224.0.0.1

Under which two circumstances would a router usually be configured as a DHCPv4 client? (Choose two.)

• The administrator needs the router to act as a relay agent.

• The router has a fixed IP address.

• The router is meant to provide IP addresses to the hosts.

• The router is intended to be used as a SOHO gateway.

• This is an ISP requirement.

Which address does a DHCPv4 server target when sending a DHCPOFFER message to a client that makes an address request?

• broadcast MAC address

• client hardware address

• client IP address

• gateway IP address

An administrator issues the commands:
Router(config)# interface g0/1
Router(config-if)# ip address dhcp
What is the administrator trying to achieve?

• configuring the router to act as a relay agent

• configuring the router to obtain IP parameters from a DHCPv4 server

• configuring the router to act as a DHCPv4 server

• configuring the router to resolve IP address conflicts

What kind of message is sent by a DHCPv4 client requesting an IP address?

• DHCPDISCOVER broadcast message

• DHCPDISCOVER unicast message

• DHCPOFFER unicast message

• DHCPACK unicast message

As a DHCPv4 client lease is about to expire, what is the message that the client sends the DHCP server?

• DHCPACK

• DHCPREQUEST

• DHCPDISCOVER

• DHCPOFFER