IPv6 Addressing Hosts

1. PC1, PC2, and Router R1 all connect to the same VLAN and IPv6 subnet. PC1 wants to
send its first IPv6 packet to PC2. What protocol or message will PC1 use to discover the
MAC address to which PC1 should send the Ethernet frame that encapsulates this IPv6
packet?
a. ARP
b. NDP NS
c. NDP RS
d. SLAAC
2. PC1 and Router R1 connect to the same VLAN and IPv6 subnet. The user of PC1 pings
the IPv6 address of a host that sits at a remote site, so that the packets flow through R1,
PC1’s default router. PC1 did not statically configure its default router setting. Which of
the following answers lists a protocol or message that PC1 could have used when trying to
learn what IPv6 address to use as its default router?
a. EUI-64
b. NDP NS
c. DAD
d. NDP RS

3. Which of the following pieces of information does a router supply in an NDP Router
Advertisement (RA) message? (Choose two answers.)
a. Router IPv6 address
b. Host name of the router
c. IPv6 prefix(es) on the link
d. IPv6 address of DHCP server
4. Host PC1 dynamically learns its IPv6 settings using stateful DHCPv6. Which one of PC1’s
settings is least likely to be learned from the stateful DHCPv6 server?
a. Host address
b. Prefix length
c. Default router address
d. DNS server address(es)
5. Host PC1 dynamically learns its IPv6 settings using Stateless Address Autoconfiguration
(SLAAC). Which one of PC1’s settings is most likely to be learned from the stateless
DHCPv6 server?
a. Host address
b. Prefix length
c. Default router address
d. DNS server address(es)
6. Host PC1 dynamically learns its IPv6 settings using Stateless Address Autoconfiguration
(SLAAC). Think about the host’s unicast address as two parts: the prefix and the interface
ID. Which of the answers list a way that SLAAC learns or builds the value of the interface
ID portion of the host’s address? (Choose two answers.)
a. Learned from a DHCPv6 server
b. Built by the host using EUI-64 rules
c. Learned from a router using NDP RS/RA messages
d. Built by the host using a random value
7. Three routers connect to the same VLAN and IPv6 subnet. All three routers have sent
NDP RA messages, in reply to various IPv6 hosts’ NDP RS messages, asking to learn
about the available IPv6 routers in the subnet. A network engineer issues the show ipv6
neighbors command on R1. Which of the answers best describes the kind of NDP
information held in this output?
a. IPv6 neighbors (both routers and hosts) plus their MAC addresses, without
noting which are routers
b. IPv6 neighbors (both routers and hosts) plus their MAC addresses, and also
noting which are routers
c. IPv6 routers, with no information about nonrouters, with no MAC address info
d. IPv6 routers, with no information about nonrouters, with MAC address info

8. An engineer needs to add a static IPv6 route for prefix 2000:1:2:3::/64 to Router R5, in
the figure shown with the previous question. Which of the following answers shows a
valid static IPv6 route for that subnet, on Router R5?
a. ipv6 route 2000:1:2:3::/64 S0/1/1
b. ipv6 route 2000:1:2:3::/64 S0/1/0
c. ip route 2000:1:2:3::/64 S0/1/1
d. ip route 2000:1:2:3::/64 S0/1/0
9. An engineer needs to add a static IPv6 route for prefix 2000:1:2:3::/64 to Router R5 in the
figure shown with Question 1. Which of the following answers shows a valid static IPv6
route for that subnet, on Router R5?
a. ipv6 route 2000:1:2:3::/64 2000:1:2:56::5
b. ipv6 route 2000:1:2:3::/64 2000:1:2:56::6
c. ipv6 route 2000:1:2:3::/64 FE80::FF:FE00:5
d. ipv6 route 2000:1:2:3::/64 FE80::FF:FE00:6

10. A router has been configured with the ipv6 address 2000:1:2:3::1/64 command on its
G0/1 interface. The router creates a link-local address of FE80::FF:FE00:1 as well. The
interface is working. Which of the following routes will the router add to its IPv6 routing
table? (Choose two answers.)

a. A route for 2000:1:2:3::/64
b. A route for FE80::FF:FE00:1/64
c. A route for 2000:1:2:3::1/128
d. A route for FE80::FF:FE00:1/128

11. An engineer needs to add IPv6 support to an existing router, R1. R1 already has IPv4 and
OSPFv2 implemented on all interfaces. The new project requires the addition of IPv6
addresses and OSPFv3 on all interfaces. Which of the following answers list a command
that must be part of the completed configuration to support IPv6 and OSPFv3? (Choose
two answers.)
a. The ipv6 router ospf process-id global command
b. The router-id command in OSPFv3 configuration mode
c. The network prefix/length command in OSPFv3 configuration mode
d. The ipv6 ospf process-id area area-id command on each IPv6-enabled interface
12. Which of the following commands list the interfaces on which OSPFv3 has been enabled?
(Choose two answers.)
a. show ipv6 ospf database
b. show ipv6 ospf interface brief
c. show ipv6 ospf
d. show ipv6 protocols
13. Which of the following answers list a routing protocol that advertises IPv6 routes?
(Chooses two answers.)
a. OSPFv6
b. OSPFv3
c. EIGRPv6
d. EIGRPv3