CCNA - SRWE - 7.4.4

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.)

• DHCPACK

• DHCPDISCOVER

• DHCPREQUEST

• DHCPOFFER

• 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 act as a relay agent

• configuring the router to act as a DHCPv4 server

• configuring the router to resolve IP address conflicts

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

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

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

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

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

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

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

• DHCPDISCOVER

• DHCPACK

• DHCPREQUEST

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

• DHCPACK unicast message

• DHCPDISCOVER unicast message

• DHCPOFFER unicast message

• DHCPDISCOVER broadcast message

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

• DHCPREQUEST

• DHCPACK

• DHCPOFFER

• DHCPDISCOVER

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

• 255.255.255.255

• 224.0.0.1

• 0.0.0.0

• 192.168.1.1

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, acknowledgment, discover, offer

• acknowledgment, request, offer, discover

• request, discover, offer, acknowledgment

• discover, offer, request, acknowledgment

What is the most likely scenario in which the WAN interface of a router would be configured as a DHCP client to be assigned a dynamic IP address from an ISP?

• There is a web server for public access on the LAN that is attached to the router.

• The router is configured as a DHCP server.

• The router is also the gateway for a LAN

• It is a SOHO or home broadband router.

Which is a DHCPv4 address allocation method that assigns IPv4 addresses for a limited lease period?

• dynamic allocation

• pre-allocation

• automatic allocation

• manual allocation