ITPEC IP April 2023 Question 32
ITPEC IP April 2023 — Question 32 of 100
IPv6 resolves the practical Internet address shortage by expanding addresses from 32 bits in IPv4 to 128 bits. The vastly larger address space supports enormous numbers of globally unique addresses and reduces dependence on address-sharing techniques introduced to conserve IPv4 space. Migration still requires compatible networks, software, and transition mechanisms.
Answer (b)
Why not others:
- (a) two directly reachable devices still must not use the same address in an overlapping routing scope
- (c) optical fiber can carry IPv4 or IPv6; the physical medium is independent of the IP version
- (d) IPv6 does not inherently make the access link or Internet path faster
Key rule: The central IPv6 benefit here is address capacity; IP version does not guarantee link speed or eliminate address conflicts.
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