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Topic: IPv6 Services (CCNP)Switch
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3.0 Infrastructure

IPv6 Services (CCNP) Practice Questions

IPv6 addressing, EUI-64, and Neighbor Discovery Protocol at CCNP depth.

One solved question, so you can see how these are marked

Which IPv6 interface ID is automatically generated using the EUI-64 process for a device with MAC address 0011.2233.4455?

0211:22FF:FE33:4455

EUI-64 splits the MAC address in half (0011:22 and 33:4455), inserts FF:FE in the middle (0011:22FF:FE33:4455), and flips the 7th bit (Universal/Local bit) of the first byte from 00 to 02 (0211:22FF:FE33:4455).

Every question in the set below is marked like this. The answers stay hidden until you pick one.

All 7 IPv6 Services (CCNP) questions in this set

Answers and explanations appear when you work through the set above.

  1. Which ICMPv6 protocol messages are used by IPv6 hosts to dynamically determine the Link-Layer MAC address of a target neighbor on the local link?

    • Router Solicitation (RS) and Router Advertisement (RA)
    • Neighbor Solicitation (NS) and Neighbor Advertisement (NA)
    • Multicast Listener Query and Multicast Listener Report (MLD)
    • Echo Request and Echo Reply

  2. Which ICMPv6 message type is sent by a host to discover the Layer 2 MAC address of an IPv6 neighbor on the local link, replacing IPv4 ARP requests?

    • Router Solicitation (Type 133)
    • Router Advertisement (Type 134)
    • Neighbor Solicitation (Type 135)
    • Neighbor Advertisement (Type 136)

  3. Which flag combination in an IPv6 Router Advertisement (RA) message directs client endpoints to use Stateful DHCPv6 for acquiring both their IPv6 address and DNS settings?

    • Managed flag set (M = 1), Other flag clear (O = 0)
    • Managed flag clear (M = 0), Other flag clear (O = 0)
    • Autonomous flag set (A = 1) in the Prefix Information option, Managed flag clear (M = 0)
    • Managed flag clear (M = 0), Other flag set (O = 1)

  4. On an IOS XE router interface facing IPv6 clients, which command forwards their DHCPv6 messages to a DHCPv6 server on a remote subnet?

    • ipv6 dhcp relay destination <server-address>
    • ip helper-address <server-address>
    • ipv6 dhcp server <pool-name> rapid-commit
    • ipv6 nd managed-config-flag and ipv6 nd other-config-flag

  5. When configuring an IPv6 static route using a Link-Local address (FE80::/10) as the next-hop, what additional parameter MUST be specified in the configuration command?

    • The exit interface name
    • The next-hop router's BGP AS number
    • The next-hop router's MAC address
    • A matching IPv4 loopback address

  6. Which address prefix range is designated for IPv6 Unique Local Addresses (ULA), equivalent to IPv4 RFC 1918 private addressing?

    • 2000::/3
    • FE80::/10
    • FC00::/7
    • FF00::/8

  7. How is an IPv6 Solicited-Node Multicast Address constructed for a target host interface?

    • Prefix FF02::1 followed by the full 48-bit MAC address of the local interface
    • Prefix FF02::1:FF00:0/104 plus the low-order 24 bits of the unicast address
    • Prefix FE80::/64 followed by the interface IPv4 address in hex
    • A hash of the default gateway's IPv6 address placed under FF05::/16