Practice Test Geeks(CCST) Cisco Certified Support Technician Practice Test
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IPv4 vs. IPv6 Addressing Flashcards

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

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  1. How many bits are in an IPv6 address compared to an IPv4 address?

    Answer: IPv6: 128 bits, IPv4: 32 bits

    IPv6 is 128 bits (eight groups of hex digits); IPv4 is 32 bits (dotted decimal), providing vastly larger address space.

  2. Which transition mechanism encapsulates IPv6 packets within IPv4 packets?

    Answer: Tunneling

    Tunneling wraps IPv6 packets inside IPv4 packets for transport across IPv4-only infrastructure.

  3. What type of IPv6 address begins with fe80::/10 and is used for single-segment communication?

    Answer: Link-local

    Link-local addresses (fe80::/10) are auto-assigned and limited to the local network segment, not routable beyond it.

  4. Which protocol replaced ARP in IPv6 for address resolution?

    Answer: NDP (Neighbor Discovery Protocol)

    IPv6 uses NDP with ICMPv6 Neighbor Solicitation/Advertisement messages instead of ARP broadcasts.

  5. What advantage does IPv6 provide regarding IPsec support?

    Answer: IPsec is a mandatory part of the IPv6 specification while optional in IPv4

    IPsec was built into the IPv6 specification from the beginning, while it is optional for IPv4.

  6. How does SLAAC in IPv6 differ from DHCP in IPv4?

    Answer: SLAAC allows devices to self-configure addresses using router-advertised prefixes without a central server

    SLAAC lets devices auto-configure by combining router-advertised prefixes with self-generated interface IDs, no DHCP server needed.