105 7-9 Review

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.)

• DHCPREQUEST

• DHCPOFFER

• DHCPACK

• DHCPDISCOVER

• DHCPNAK

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 resolve IP address conflicts

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

• configuring the router to act as a DHCPv4 server

• configuring the router to act as a relay agent

Which DHCP IPv4 message contains the following information?

Destination address: 255.255.255.255

Client IPv4 address: 0.0.0.0

Default gateway address: 0.0.0.0

Subnet mask: 0.0.0.0

• DHCPOFFER

• DHCPACK

• DHCPREQUEST

• DHCPDISCOVER

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

• DHCPACK unicast message

• DHCPDISCOVER broadcast message

• DHCPDISCOVER unicast message

• DHCPOFFER unicast message

What is the destination IP address when an IPv4 host sends a DHCPDISCOVER message?

• 224.0.0.1

• 127.0.0.1

• 255.255.255.255

• 0.0.0.0

If more than one DHCP server is available on the local network, in which order will DHCP messages be sent between a host and a DHCP server?

• request, discover, offer, acknowledgment

• discover, offer, request, acknowledgment

• acknowledgment, request, offer, discover

• request, acknowledgment, discover, offer

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.

• This is an ISP requirement.

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

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

• gateway IP address

• client IP address

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

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

• for hosts on other subnets to receive the information

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

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

How does an IPv6 client ensure that it has a unique address after it configures its IPv6 address using the SLAAC allocation method?

• It contacts the DHCPv6 server via a special formed ICMPv6 message.

• It sends an ARP message with the IPv6 address as the destination IPv6 address.

• It sends an ICMPv6 Neighbor Solicitation message with the IPv6 address as the target IPv6 address.

• It checks with the IPv6 address database that is hosted by the SLAAC server.