IPv6 GDSA Practice Questions (Page 7)

Questions 31–35

1. 31application · easy

   A network engineer is configuring DNS for an IPv6 network. The engineer wants to ensure that clients can resolve both IPv4 and IPv6 addresses for a dual-stack server. Which DNS record types should be configured?

   • AAAAA record for the IPv4 address and A record for the IPv6 address.
   • BOnly AAAA records for both addresses.
   • CA record for the IPv4 address and AAAA record for the IPv6 address.
   • DOnly A records for both addresses.
   Reveal Solution Discussion Select an answer first
2. 32application · medium

   A security analyst is troubleshooting intermittent connectivity on an IPv6-enabled segment. Hosts are configured with SLAAC and are receiving router advertisements. However, some hosts fail to communicate with the default gateway. The analyst suspects Neighbor Discovery Protocol (NDP) issues. Which NDP function is most likely to be failing if hosts cannot resolve the gateway's link-layer address?

   • ARouter discovery using Router Solicitation and Router Advertisement messages.
   • BAddress resolution using Neighbor Solicitation and Neighbor Advertisement messages.
   • CPrefix renumbering using Router Advertisement options.
   • DDuplicate Address Detection (DAD) using Neighbor Solicitation messages.
   Reveal Solution Discussion Select an answer first
4. 33application · medium

   A network administrator is configuring a new IPv6 segment for a lab environment that should not be reachable from other networks. The lab hosts only need to communicate with each other on the same subnet. Which IPv6 address scope should be used?

   • AGlobal unicast addresses (2000::/3)
   • BMulticast addresses (ff00::/8)
   • CUnique local addresses (fc00::/7)
   • DLink-local addresses (fe80::/10)
   Reveal Solution Discussion Select an answer first
5. 34application · medium

   A network architect is designing an IPv6 addressing plan for a large enterprise. The architect needs to provide a single address that can be used by multiple servers to offer the same service, so that clients automatically connect to the nearest available server. Which IPv6 address type should be used?

   • AUnicast address
   • BAnycast address
   • CMulticast address
   • DLink-local address
   Reveal Solution Discussion Select an answer first
6. 35foundation · easy

   What is the purpose of using double colons (::) in an IPv6 address?

   • ATo indicate that the address is a multicast address.
   • BTo denote that the address is a loopback address.
   • CTo compress one or more consecutive groups of zeros in the address.
   • DTo separate the network portion from the host portion of the address.
   Reveal Solution Discussion Select an answer first