IPv6 GCIA Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A network engineer is reviewing a packet capture from a host that is sending traffic to a group of routers that all share the same destination address. The destination address in the capture is ff02::2. Which address type is the host using, and what is the primary purpose of this address?

   • AMulticast; the address identifies all IPv6 routers on the local link, and the packet is delivered to every router that has joined that group.
   • BUnicast; the address is assigned to a single router interface, and the packet is delivered only to that specific router.
   • CMulticast; the address is a global-scope multicast group that includes all routers in the entire IPv6 internetwork.
   • DAnycast; the address identifies a group of routers, and the packet is delivered to only the nearest router in terms of routing distance.
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   What information does a host obtain from a Router Advertisement (RA) to perform Stateless Address Autoconfiguration (SLAAC)?

   • AThe network prefix and other configuration parameters such as the default gateway.
   • BThe DNS server addresses and domain name.
   • CThe complete IPv6 address to assign to the host.
   • DThe link-layer address of the router only.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A network administrator is setting up a new IPv6 network and wants to ensure that hosts can automatically configure their addresses. The administrator has configured the router to send Router Advertisements. What must the host do to generate its IPv6 address using SLAAC?

   • ASend a DHCPv6 request to the router.
   • BUse the router's link-local address as its IPv6 address.
   • CWait for the router to assign a complete address via Neighbor Discovery.
   • DCombine the prefix from the Router Advertisement with its own interface identifier.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which IPv6 security issue involves an attacker sending false Neighbor Advertisement messages to redirect traffic?

   • AExtension header abuse
   • BNDP spoofing
   • CRouter advertisement flooding
   • DPrivacy extension leakage
   Reveal Solution Discussion Select an answer first
6. 5expert · hard

   A security architect is designing a new IPv6-only network segment for a high-security environment. The architect is concerned about NDP-based attacks, such as Neighbor Advertisement spoofing and Router Advertisement spoofing. The architect also wants to ensure that hosts can autoconfigure addresses without a stateful DHCPv6 server, but also wants to prevent unauthorized devices from joining the network. Which combination of controls would best address these concerns?

   • AImplement SEND on all hosts and routers, and use SLAAC with privacy extensions for address assignment.
   • BImplement RA Guard on the switches, use DHCPv6 for address assignment, and disable SLAAC.
   • CImplement DHCPv6 Guard on the switches, and use DHCPv6 for address assignment.
   • DImplement port security on switches to limit the number of MAC addresses per port, and use static IPv6 addresses.
   Reveal Solution Discussion Select an answer first