Ch. 8 - SLAAC & DHCPv6

A. It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.

A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address? A. It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network. B. It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use. C. It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address. D. It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server.

A. DHCPv6 INFORMATION-REQUEST

A company implements the stateless DHCPv6 method for configuring IPv6 addresses on employee workstations. After a workstation receives messages from multiple DHCPv6 servers to indicate their availability for DHCPv6 service, which message does it send to a server for configuration information? A. DHCPv6 INFORMATION-REQUEST B. DHCPv6 SOLICIT C. DHCPv6 ADVERTISE D. DHCPv6 REQUEST

C. It is required for sending ICMPv6 RA messages.

A network administrator is entering the command ipv6 unicast-routing to start configuring DHCPv6 operation on a router. Which statement describes the function of this command? A. It is required to configure stateless DHCPv6 server on the router. B. It is required to configure stateful DHCPv6 server on the router. C. It is required for sending ICMPv6 RA messages. D. It is required for enabling DNS service in DHCPv6 configurations.

C. ipv6 dhcp server POOL-NAME

A router is to provide DHCPv6 server services. Which command should be configured on the client facing interface? A. ipv6 enable B. ipv6 dhcp pool POOL-NAME C. ipv6 dhcp server POOL-NAME D. ipv6 nd other-config-flag

C. The client should automatically configure an IPv6 address and then contact a DHCPv6 server for more information.

After booting, a client receives an ICMPv6 RA message with the M flag set to 0 and the O flag set to 1. What does this indicate? A. The client should request an IPv6 address directly from a DHCPv6 server. B. The client should automatically configure an IPv6 address without contacting a DHCPv6 server. C. The client should automatically configure an IPv6 address and then contact a DHCPv6 server for more information. D. The client should be statically configured with an IPv6 address because the local router does not support autoconfiguration.

C. ipv6 address dhcp

An IPv6-enabled router is to acquire its IPv6 GUA from a DHCPv6 server. Which interface configuration command should be configured on client router? A. ipv6 address autoconfig B. ipv6 address auto config C. ipv6 address dhcp D. ipv6 address dhcpv6

A. ipv6 address autoconfig

An IPv6-enabled router is to acquire its IPv6 GUA from another IPv6 router using SLAAC. Which interface configuration command should be configured on the client router? A. ipv6 address autoconfig B. ipv6 address auto config C. ipv6 address dhcp D. ipv6 address dhcpv6

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

How does an IPv6 client ensure that it has a unique address after it configures its IPv6 address using the SLAAC allocation method? A. It checks with the IPv6 address database that is hosted by the SLAAC server. B. It contacts the DHCPv6 server via a special formed ICMPv6 message. C. It sends an ICMPv6 Neighbor Solicitation message with the IPv6 address as the target IPv6 address. D. It sends an ARP message with the IPv6 address as the destination IPv6 address.

A. SLAAC

In which alternative to DHCPv6 does a router dynamically provide IPv6 configuration information to hosts? A. SLAAC B. EUI-64 C. ICMPv6 D. ARP

B. SOLICIT

What DHCPv6 message does a host send to look for a DHCPv6 server? A. ADVERTISE B. SOLICIT C. INFORMATION-REQUEST D. REQUEST

D. REQUEST

What DHCPv6 message does a host send to the DHCPv6 server if it is using stateful DHCPv6? A. ADVERTISE B. SOLICIT C. INFORMATION-REQUEST D. REQUEST

B. M=1

What M flag setting indicates that stateful DHCPv6 is used? A. M=0 B. M=1

A. A=1, M=0, O=0

What are the flag settings when a host should use the SLAAC only option? A. A=1, M=0, O=0 B. A=1, M=1, O=0 C. A=1, M=0, O=1 D. A=0, M=1, O=1

B. The default gateway of an IPv6 client on a LAN will be the link-local address of the router interface attached to the LAN. & D. IPv6 addressing is dynamically assigned to clients through the use of ICMPv6.

What are two characteristics of the SLAAC method for IPv6 address configuration? (Choose two.) A. Clients send router advertisement messages to routers to request IPv6 addressing. B. The default gateway of an IPv6 client on a LAN will be the link-local address of the router interface attached to the LAN. C. Router solicitation messages are sent by the router to offer IPv6 addressing to clients. D. IPv6 addressing is dynamically assigned to clients through the use of ICMPv6. E. This stateful method of acquiring an IPv6 address requires at least one DHCPv6 server.

C. 547

What destination UDP port do DHCPv6 clients use to send DHCPv6 messages? A. 67 B. 68 C. 547 D. 546

C. A=1, M=0, O=1

What flag settings combination is used for stateless DHCP? A. A=1, M=0, O=0 B. A=0, M=1, O=0 C. A=1, M=0, O=1 D. A=0, M=1, O=1

B. the ICMPv6 Router Advertisement

What message informs IPv6 enabled interfaces to use stateful DHCPv6 for obtaining an IPv6 address? A. the DHCPv6 Reply message B. the ICMPv6 Router Advertisement C. the DHCPv6 Advertise message D. the ICMPv6 Router Solicitation

B. DAD

What method is used by a host to verify an IPv6 address is unique on the local network before assigning that address to an interface? A. ARP B. DAD C. PING D. SLAAC

B. DAD

What process is used in ICMPv6 for a host to verify that an IPv6 address is unique before configuring it on an interface? A. ARP B. DAD C. EUI-64 D. SLAAC

D. random generation & E. EUI-64

What two methods can be used to generate an interface ID by an IPv6 host that is using SLAAC? (Choose two.) A. stateful DHCPv6 B. ARP C. DAD D. random generation E. EUI-64

B. show ipv6 dhcp binding

Which DHCPv6 verification command would display the link-local and GUA assigned address for each active client? A. show ip dhcp pool B. show ipv6 dhcp binding C. show ipv6 dhcp interface D. show ipv6 dhcp pool

C. Router Solicitation (RS)

Which ICMPv6 message is sent by a host in an attempt to locate an online IPv6enabled router to obtain IPv6 addressing information? A. Neighbor Advertisements (NA) B. Neighbor Solicitation (NS) C. Router Solicitation (RS) D. Router Advertisements (RA)

B. link-local address

Which address type is automatically created by default on a host interface when no RAs are received? A. global unicast address B. link-local address C. MAC address

B. ipv6 dhcp relay destination

Which command is configured on the client LAN interface of the DHCPv6 relay agent? A. ip helper-address B. ipv6 dhcp relay destination C. ipv6 enable D. ipv6 helper-address

A. address prefix ipv6-address/prefix

Which command is not configured in stateless DHCPv6? A. address prefix ipv6-address/prefix B. domain-name name C. dns-server server-address D. ipv6 dhcp server pool-name

B. ipv6 unicast-routing

Which command must be configured on a router to enable it to join the IPv6 all-routers multicast address ff02::2? A. ip routing B. ipv6 unicast-routing C. ipv6 address ipv6-address/prefix-length D. ipv6 address ipv6-address link-local

B. ipv6 address dhcp

Which command should be configured on a router interface to set the router as a stateful DHCPv6 client? A. ipv6 dhcp server stateful B. ipv6 address dhcp C. ipv6 address autoconfigure D. ipv6 enable

C. FF02::2

Which destination IP address is used when an IPv6 host sends a DHCPv6 SOLICIT message to locate a DHCPv6 server? A. FF02::1 B. FE80::1 C. FF02::2 D. FF02::1:2

B. SLAAC with stateless DHCPv6 Server

Which method best describes stateless DHCP? A. SLAAC only B. SLAAC with stateless DHCPv6 Server C. Stateful DHCPv6 Server

D. router advertisements that are received from the link router

Which method would an IPv6-enabled host using SLAAC employ to learn the address of the default gateway? A. advertise messages that are received from the DHCPv6 server B. reply messages that are received from the DHCPv6 server C. neighbor advertisements that are eceived from link neighbors D. router advertisements that are received from the link router

A. DHCPv6 client, B. DHCPv6 relay agent, & C. DHCPv6 server

Which three DHCPv6 roles can a router perform? (Choose all that apply.) A. DHCPv6 client B. DHCPv6 relay agent C. DHCPv6 server

A. Neighbor Advertisements (NA) & B. Neighbor Solicitation (NS)

Which two ICMPv6 messages are used in the SLAAC process? (Choose two.) A. Neighbor Advertisements (NA) B. Neighbor Solicitation (NS) C. Router Solicitation (RS) D. Router Advertisements (RA)