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NS0-157 · Question #132

Which two statements are true with clustered Data ONTAP support of IPv6? (Choose two.)

The correct answer is D. You must use a network mask of 64 E. You can define an address with 64-bit hexadecimal ID in prefix: id format. Clustered ONTAP IPv6 support enforces /64 prefix lengths and uses the standard 64-bit prefix plus 64-bit interface identifier address structure.

Network Configuration and Data Access

Question

Which two statements are true with clustered Data ONTAP support of IPv6? (Choose two.)

Options

  • AYou can define multicast address
  • BYou can define a link-local address
  • CYou can define a look-back address
  • DYou must use a network mask of 64
  • EYou can define an address with 64-bit hexadecimal ID in prefix: id format

How the community answered

(32 responses)
  • A
    3% (1)
  • B
    6% (2)
  • D
    91% (29)

Why each option

Clustered ONTAP IPv6 support enforces /64 prefix lengths and uses the standard 64-bit prefix plus 64-bit interface identifier address structure.

AYou can define multicast address

ONTAP does not allow administrators to manually define multicast IPv6 addresses on LIFs - multicast addresses serve routing and group communication functions and are not assignable as LIF unicast interface addresses.

BYou can define a link-local address

Link-local addresses in the fe80::/10 range are automatically generated by the network stack and cannot be manually defined or statically assigned to ONTAP LIFs as configurable addresses.

CYou can define a look-back address

The IPv6 loopback address (::1) is a reserved system address that cannot be manually configured or assigned to any physical or logical network interface in ONTAP.

DYou must use a network mask of 64Correct

IPv6 unicast addressing standards require a /64 subnet prefix for most network segments, and ONTAP enforces this requirement when configuring IPv6 addresses on LIFs, meaning a 64-bit network mask is not optional but mandatory.

EYou can define an address with 64-bit hexadecimal ID in prefix: id formatCorrect

IPv6 addresses are 128 bits expressed as a 64-bit network prefix followed by a 64-bit interface identifier, and ONTAP supports configuring addresses in this standard colon-delimited hexadecimal prefix:id notation consistent with RFC 4291.

Concept tested: IPv6 addressing requirements in clustered ONTAP

Source: https://docs.netapp.com/us-en/ontap/networking/create_lifs.html

Topics

#IPv6#network mask#address configuration#Data ONTAP

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