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IPv4 and IPv6 Addressing Flashcards

7 cards from real Cisco CCNA 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 Addressing flashcards as text

  1. Which of the following is a valid IPv6 link-local address prefix?

    Answer: FE80::/10

    Link-local addresses always start with FE80::/10 and are automatically assigned to every IPv6-enabled interface.

  2. What does the 'network address' of a subnet represent?

    Answer: The base address that identifies the subnet itself

    The network address (all host bits set to 0) identifies the subnet and cannot be assigned to a host.

  3. An interface receives the IPv6 address 2001:DB8::1/64 via stateless address autoconfiguration (SLAAC). Which portion is derived from the router advertisement?

    Answer: The first 64 bits (prefix)

    SLAAC uses the 64-bit prefix advertised by the router and the device generates its own 64-bit interface ID (typically from the EUI-64 process).

  4. Which private IPv4 address range is defined in RFC 1918 for Class B networks?

    Answer: 172.16.0.0 – 172.31.255.255

    RFC 1918 designates 172.16.0.0 through 172.31.255.255 (172.16.0.0/12) as private Class B space.

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

    Answer: 6

    A /29 subnet has 3 host bits (2^3 = 8 addresses), minus 2 for network and broadcast, leaving 6 usable hosts.

  6. Which IPv6 multicast address is used to reach all routers on the local link?

    Answer: FF02::2

    FF02::2 is the all-routers multicast address scoped to the local link.

  7. Which IPv4 address is reserved as the limited broadcast address?

    Answer: 255.255.255.255

    255.255.255.255 is the limited broadcast address used to reach all hosts on the local network segment without routing.