Practice Test Geeks(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test
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IPv4 and IPv6 Flashcards

7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 IPv4 and IPv6 flashcards as text

  1. Which IPv6 address type is automatically assigned to every IPv6-enabled interface and is only valid on the local link?

    Answer: Link-local

    Link-local addresses (FE80::/10) are automatically configured on every IPv6 interface and are only routable on the local link.

  2. What is the valid host range for the subnet 192.168.10.64/26?

    Answer: 192.168.10.65 – 192.168.10.126

    A /26 has 64 addresses; network=.64, broadcast=.127, so valid hosts are .65 through .126.

  3. Which mechanism allows an IPv6 host to automatically generate its interface ID from its 48-bit MAC address?

    Answer: SLAAC with EUI-64

    EUI-64 inserts FFFE in the middle of the MAC address and flips the universal/local bit to form a 64-bit interface ID used with SLAAC.

  4. A packet is destined for 172.16.5.200. Which subnet does this address belong to if the mask is 255.255.255.192?

    Answer: 172.16.5.192/26

    /26 (255.255.255.192) creates blocks of 64: .0, .64, .128, .192; address .200 falls in the .192 subnet.

  5. Which IPv4 address class supports the most hosts per network?

    Answer: Class A

    Class A networks use only 8 bits for the network portion, leaving 24 bits for hosts — supporting over 16 million hosts per network.

  6. What does the IPv6 prefix FF02::1 represent?

    Answer: All nodes on the local link

    FF02::1 is the all-nodes multicast address used to reach every IPv6-enabled device on the local link.

  7. How many usable host addresses are available in a /29 subnet?

    Answer: 6

    A /29 has 8 total addresses (2^3); subtracting the network and broadcast addresses leaves 6 usable host addresses.