SWRE 7-9

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.)

• DHCPOFFER

• DHCPACK

• DHCPDISCOVER

• DHCPREQUEST

• 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 DHCPv4 server

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

• configuring the router to act as a relay agent

• configuring the router to resolve IP address conflicts

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 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.

• The client does 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.

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

• DHCPACK

• DHCPDISCOVER

• DHCPOFFER

• DHCPREQUEST

Which protocol automates assignment of IP addresses on a network, and which port number does it use? (Choose two.)

• SMB

• 53

• DNS

• 67

• DHCP

Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?

• DHCPOFFER

• DHCPDISCOVER

• DHCPREQUEST

• DHCPACK

Which command, when issued in the interface configuration mode of a router, enables the interface to acquire an IPv4 address automatically from an ISP, when that link to the ISP is enabled?

• service dhcp

• ip address dhcp

• ip helper-address

• ip dhcp pool

What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server?

• The computer cannot ping 127.0.0.1.

• The computer receives an IP address that starts with 169.254.

• Windows displays a DHCP timeout message.

• The computer cannot ping other devices on the same network with IP addresses in the 169.254.0.0/16 range.

Which DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server?

• broadcast DHCPACK

• broadcast DHCPREQUEST

• unicast DHCPACK

• unicast DHCPREQUEST

A small coffee shop is offering free Wi-Fi to customers. The network includes a wireless router and a DSL modem that is connected to the local phone company. What method is typically used to configure the connection to the phone company?

• Set the WAN connection in the wireless router as a DHCP client.

• Set the connection between the wireless router and the DSL modem as a private IP network.

• Set the DSL modem as a DHCP client to get a public IP address from the wireless router.

• Set the DSL modem as a DHCP client to the phone company and a DHCP server for the internal connection.