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Zorluk: KolayIPv6 Addressing and Prefixes

An administrator is configuring IPv6 addressing on a router interface and verifying reserved scope prefixes. Which two statements correctly describe IPv6 address representations and reserved prefix ranges? (Select two.)

  1. The prefix fe80::/10 is reserved for IPv6 link-local addresses.Cevap
  2. B
    A double colon (::) can be used multiple times in an IPv6 address to represent contiguous segments of zeros.
  3. The IPv6 loopback address is represented as ::1/128.Cevap
  4. D
    The prefix block fc00::/7 is reserved exclusively for IPv6 global unicast routable traffic across the public Internet.

Cevap

The prefix fe80::/10 is reserved for IPv6 link-local addresses, and the IPv6 loopback address is represented as ::1/128.
Link-local addresses strictly use the fe80::/10 prefix, and the loopback address for an IPv6 host interface is ::1/128.

Adım Adım Çözüm

1
Identify the reserved prefix ranges for link-local and unique local IPv6 address scopes.
The prefix fe80::/10 corresponds to link-local unicast addresses. The prefix fc00::/7 corresponds to Unique Local Addresses (ULA), not global unicast addresses (which use 2000::/3).
Understanding IPv6 scope prefixes is required to properly categorize address types.
2
Evaluate the rules of IPv6 address compression and special addresses.
The double colon (::) compression mechanism is allowed only once per address to maintain uncompressed length integrity. The IPv6 loopback address is designated as ::1/128.
RFC 4291 specifies rules for shortening IPv6 addresses and designates ::1/128 for node loopback testing.

Anahtar Kavram

IPv6 Address Scopes and Zero Compression Rules
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Konular

IPv6 Addressing and Prefixes

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