CCNA 2 Test 3 chs 7-9 part 1 of 3
DHCPDISCOVER DHCPREQUEST
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.)
Send a DHCPDISCOVER message to physical address FF-FF-FF-FF-FF-FF.
A client device on an Ethernet segment needs an IP address in order to communicate on the network. A DHCP server with IP address 192.168.1.1 has been configured and enabled on the network. How will a client device obtain a usable IP address for this network?
67/68
A company uses DHCP to manage IP address deployment for employee workstations. The IT department deploys multiple DHCP servers in the data center and uses DHCP relay agents to facilitate the DHCP requests from workstations. Which two UDP ports are used to forward DHCP traffic? (Choose two.)
the link-local address of the router interface that is attached to the network
A company uses the SLAAC method to configure IPv6 addresses for the employee workstations. Which address will a client use as its default gateway?
DHCPACK
A host PC is attempting to lease an address through DHCP. What message is sent by the server to let the client know it is able to use the provided IP information?
It should use the information that is contained in the RA message and contact a DHCPv6 server for additional information.
A network administrator configures a router to send RA messages with M flag as 0 and O flag as 1. Which statement describes the effect of this configuration when a PC tries to configure its IPv6 address?
HSRP uses active and standby routers.
A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement describes a feature that is associated with HSRP?
Set the WAN connection in the wireless router as a DHCP client.
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?
configuring the router to obtain IP parameters from a DHCPv4 server
An administrator issues the commands: Router(config)# interface g0/1 Router(config-if)# ip address dhcp
Explanation: The DHCPDISCOVER message is used to identify any DHCP servers on a network.The DHCPOFFER message is used by a server to offer a lease to a client. The DHCPREQUEST message is used to identify both the specific DHCP server and the lease that the client is accepting.The DHCPACK message is used by a server to finalize a successful lease with a client.The DHCPNAK message is used when an offered lease is no longer valid.
Order the DHCP message types as they would occur between a DHCP client and a DHCP server.
a client initiating a message to find a DHCP server - DHCPDISCOVER a DHCP server responding to the initial request by a client - DHCPOFFER the client accepting the IP address provided by the DHCP server - DHCPREQUEST the DHCP server confirming that the lease has been accepted - DHCPACK
Place the options in the following order:
The router is configured for stateless DHCPv6 operation.
Refer to the exhibit. A network administrator is configuring a router for DHCPv6 operation. Which conclusion can be drawn based on the commands?
The router is configured for SLAAC operation. Explanation: The router is configured for SLAAC operation because there is no configuration command to change the RA M and O flag value. By default, both M and O flags are set to 0. In order to permint stateless DHCPv6 operation, the interface command ipv6 nd other-config-flag should be issued. The GigabitEthernet interface is in working condition because clients can get RA messages and configure their IPv6 addresses as expected. Also, the fact that R1 is the DHCPv6 server and clients are getting RA messages indicates that clients can communicate with the DHCP server. The number of active clients is 0 because the DHCPv6 server does not maintain the state of clients IPv6 addresses (it is not configured for stateful DHCPv6 operation). The DNS server address issue is not relevant to the problem.
Refer to the exhibit. A network administrator is implementing the stateless DHCPv6 operation for the company. Clients are configuring IPv6 addresses as expected. However, the clients are not getting the DNS server address and the domain name information configured in the DHCP pool. What could be the cause of the problem?
255.255.255.255
Refer to the exhibit. PC1 is configured to obtain a dynamic IP address from the DHCP server. PC1 has been shut down for two weeks. When PC1 boots and tries to request an available IP address, which destination IP address will PC1 place in the IP header?
Add the ipv6 dhcp relay command to interface Fa0/0. Explanation: Client DHCPv6 messages are sent to a multicast address with link-local scope, which means that the messages will not be forwarded by routers. Because the client and server are on different subnets on different interfaces, the message will not reach the server. The router can be configured to relay the DHCPv6 messages from the client to the server by configuring the ipv6 dhcp relay command on the interface that is connected to the client.
Refer to the exhibit. What should be done to allow PC-A to receive an IPv6 address from the DHCPv6 server?
It can provide relay services for multiple UDP services.
What is an advantage of configuring a Cisco router as a relay agent?
The computer receives an IP address that starts with 169.254
What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server?
The client may have received offers from multiple servers, and the broadcast serves to implicitly decline those other offers.
When a client is requesting an initial address lease from a DHCP server, why is the DHCPREQUEST message sent as a broadcast?
DHCPDISCOVER
Which DHCP IPv4 message contains the following information? Destination address: 255.255.255.255Client IPv4 address: 0.0.0.0Default gateway address: 0.0.0.0Subnet mask: 0.0.0.0
broadcast DHCPREQUEST
Which DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server?
ip address dhcp
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?
a DHCPREQUEST unicast message
Which kind of message is sent by a DHCP client when its IP address lease has expired?
DHCPREQUEST
Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?
DHCP 67
Which protocol automates assignment of IP addresses on a network, and which port number does it use? (Choose two.)
When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.
Which statement is true about DHCP operation?
