1. Which of the following was a short-term solution to the IPv4 address exhaustion problem?
a. IP version 6 b. IP version 5 c. NAT/PAT d. ARP
2. A router receives an Ethernet frame that holds an IPv6 packet. The router then makes a decision to route the packet out a serial link. Which of the following statements is true about how a router forwards an IPv6 packet?
a. The router discards the Ethernet data-link header and trailer of the received frame. b. The router makes the forwarding decision based on the packet’s source IPv6 address. c. The router keeps the Ethernet header, encapsulating the entire frame inside a new IPv6 packet before sending it over the serial link. d. The router uses the IPv4 routing table when choosing where to forward the packet.
3. Which of the following is the shortest valid abbreviation for FE80:0000:0000:0100:0000:0000:0000:0123?
a. FE80::100::123 b. FE8::1::123 c. FE80::100:0:0:0:123:4567 d. FE80:0:0:100::123
4. Which of the following is the shortest valid abbreviation for 2000:0300:0040:0005:6000:0700:0080:0009?
a. 2:3:4:5:6:7:8:9 b. 2000:300:40:5:6000:700:80:9 c. 2000:300:4:5:6000:700:8:9 d. 2000:3:4:5:6:7:8:9
5. Which of the following is the unabbreviated version of IPv6 address 2001:DB8::200:28?
a. 2001:0DB8:0000:0000:0000:0000:0200:0028 b. 2001:0DB8::0200:0028 c. 2001:0DB8:0:0:0:0:0200:0028 d. 2001:0DB8:0000:0000:0000:0000:200:0028
6. Which of the following is the prefix for address 2000:0000:0000:0005:6000:0700:0080:0009, assuming a mask of /64?
a. 2000::5::/64 b. 2000::5:0:0:0:0/64 c. 2000:0:0:5::/64 d. 2000:0:0:5:0:0:0:0/64
1. Which of the following IPv6 addresses appears to be a unique local unicast address, based on its first few hex digits?
a. 3123:1:3:5::1 b. FE80::1234:56FF:FE78:9ABC c. FDAD::1 d. FF00::5
2. Which of the following IPv6 addresses appears to be a global unicast address, based on its first few hex digits?
a. 3123:1:3:5::1 b. FE80::1234:56FF:FE78:9ABC c. FDAD::1 d. FF00::5
3. When subnetting an IPv6 address block, an engineer shows a drawing that breaks the address structure into three pieces. Comparing this concept to a three-part IPv4 address structure, which part of the IPv6 address structure is most like the IPv4 network part of the address?
a. Subnet b. Interface ID c. Network d. Global routing prefix e. Subnet router anycast
4. When subnetting an IPv6 address block, an engineer shows a drawing that breaks the address structure into three pieces. Assuming that all subnets use the same prefix length, which of the following answers lists the name of the field on the far right side of the address?
a. Subnet b. Interface ID c. Network d. Global routing prefix e. Subnet router anycast
5. For the IPv6 address FD00:1234:5678:9ABC:DEF1:2345:6789:ABCD, which part of the address is considered the global ID of the unique local address?
a. None; this address has no global ID. b. 00:1234:5678:9ABC c. DEF1:2345:6789:ABCD d. 00:1234:5678 e. FD00
1. Router R1 has an interface named Gigabit Ethernet 0/1, whose MAC address has been set to 0200.0001.000A. Which of the following commands, added in R1’s Gigabit Ethernet 0/1 configuration mode, gives this router’s G0/1 interface a unicast IPv6 address of 2001:1:1:1:1:200:1:A, with a /64 prefix length?
a. ipv6 address 2001:1:1:1:1:200:1:A/64 b. ipv6 address 2001:1:1:1:1:200:1:A/64 eui-64 c. ipv6 address 2001:1:1:1:1:200:1:A /64 eui-64 d. ipv6 address 2001:1:1:1:1:200:1:A /64 e. None of the other answers are correct.
2. Router R1 has an interface named Gigabit Ethernet 0/1, whose MAC address has been set to 5055.4444.3333. This interface has been configured with the ipv6 address 2000:1:1:1::/64 eui-64 subcommand. What unicast address will this interface use?
a. 2000:1:1:1:52FF:FE55:4444:3333 b. 2000:1:1:1:5255:44FF:FE44:3333 c. 2000:1:1:1:5255:4444:33FF:FE33 d. 2000:1:1:1:200:FF:FE00:0
3. Router R1 currently supports IPv4, routing packets in and out all its interfaces. R1’s configuration needs to be migrated to support dual-stack operation, routing both IPv4 and IPv6. Which of the following tasks must be performed before the router can also support routing IPv6 packets? (Choose two answers.)
a. Enable IPv6 on each interface using an ipv6 address interface subcommand. b. Enable support for both versions with the ip versions 4 6 global command. c. Additionally enable IPv6 routing using the ipv6 unicast-routing global command. d. Migrate to dual-stack routing using the ip routing dual-stack global command.
4. Router R1 has an interface named Gigabit Ethernet 0/1, whose MAC address has been set to 0200.0001.000A. The interface is then configured with the ipv6 address 2001:1:1:1:200:FF:FE01:B/64 interface subcommand; no other ipv6 address commands are configured on the interface. Which of the following answers lists the link local address used on the interface?
a. FE80::FF:FE01:A b. FE80::FF:FE01:B c. FE80::200:FF:FE01:A d. FE80::200:FF:FE01:B
5. Which of the following multicast addresses is defined as the address for sending packets to only the IPv6 routers on the local link?
a. FF02::1 b. FF02::2 c. FF02::5 d. FF02::A
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 does 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 Stateless Address Auto Configuration (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)
5. Host PC1 dynamically learns its IPv6 settings using Stateless Address Auto Configuration (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
6. 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
1. A router has been configured with the ipv6 address 2000:1:2:3::1/64 command on its G0/1 interface as shown in the figure. 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
2. A router has been configured with the ipv6 address 3111:1:1:1::1/64 command on its G0/1 interface and ipv6 address 3222:2:2:2::1/64 on its G0/2 interface. Both interfaces are working. Which of the following routes would you expect to see in the output of the show ip route connected command? (Choose two answers.)
a. A route for 3111:1:1:1::/64 b. A route for 3111:1:1:1::1/64 c. A route for 3222:2:2:2::/64 d. A route for 3222:2:2:2::2/128
3. An engineer needs to add a static IPv6 route for prefix 2000:1:2:3::/64 to Router R5’s configuration, 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 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
4. 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
5. An engineer types the command ipv6 route 2001:DB8:8:8::/64 2001:DB8:9:9::9 129 in configuration mode of Router R1 and presses Enter. Later, a show ipv6 route command does not list any route for subnet 2001:DB8:8:8::/64. Which of the following could have caused the route to not be in the IPv6 routing table?
a. The command should be using a next-hop link-local address instead of a global unicast. b. The command is missing an outgoing interface parameter, so IOS rejected the ipv6 route command. c. The router has no routes that match 2001:DB8:9:9::9. d. A route for 2001:DB8:8:8::/64 with administrative distance 110 already exists.
6. The command output shows two routes from the longer output of the show ipv6 route command. Which answers are true about the output? (Choose two answers.)
R1# show ipv6 route static! Legend omitted for brevityS 2001:DB8:2:2::/64 [1/0] via 2001:DB8:4:4::4S ::/0 [1/0] via Serial0/0/1, directly connecteda. The route to ::/0 is added because of an ipv6 route global command. b. The administrative distance of the route to 2001:DB8:2:2::/64 is 1. c. The route to ::/0 is added because of an ipv6 address interface subcommand. d. The route to 2001:DB8:2:2::/64 is added because of an IPv6 routing protocol.
Part 3 Questions Continued
Fundementals of IP Version 61. C 2. A 3. D 4. B 5. A 6. CIPv6 Addressing and Subnetting1. C 2. A 3. D 4. B 5. DImplementing IPv6 Addressing on Routers1. A 2. B 3. A, C 4. A 5. BImplementing IPv6 Addressing on Hosts1. B 2. D 3. A, C 4. D 5. B, D 6. AImplementing IPv6 Routing1. A, C 2. A, C 3. A 4. B 5. C 6. A, B