IPv6: True Statement about IPv6 for CCIE Security Exam | Cisco Exam Prep

True Statement about IPv6 for CCIE Security Exam

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Which statement about IPv6 is true?



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A. B. C. D. E.


A. Broadcast is available.

False. IPv6 does not support broadcast. Instead, IPv6 uses multicast for one-to-many communication.

B. The address pool will never deplete.

False. Although the IPv6 address space is much larger than IPv4, it is not infinite. However, it is large enough that address depletion is not a concern in the foreseeable future.

C. Data security is natively supported through mandatory IPv6 extension headers for ESP and AH.

True. IPv6 includes built-in support for IPsec, which provides data confidentiality, integrity, and authentication through the use of the Authentication Header (AH) and Encapsulating Security Payload (ESP) extension headers. These headers are mandatory in IPv6.

D. Increased NAT is required compared to IPv4.

False. NAT is typically used in IPv4 networks to conserve address space, but in IPv6 networks, address conservation is less of a concern due to the larger address space. As a result, NAT is less commonly used in IPv6 networks.

E. IPv6 has fewer bits available for addressing than IPv4.

False. IPv6 uses 128-bit addresses, compared to the 32-bit addresses used in IPv4. This provides a vastly larger address space, allowing for more unique addresses and easier address allocation.