ITPEC FE Morning April 2020 Question 33
ITPEC FE Morning April 2020 — Question 33 of 80
IPv6 Address Characteristics — identify correct properties of IPv6 addressing.
IPv6 uses 128-bit addresses written in several notations, most commonly as 8 groups of 4 hex digits separated by colons (e.g., 2001:0db8:0000:0000:0000:0000:0000:0001).
Why (c) is correct:
- Multiple representations exist: full notation, zero compression (::) and leading-zero omission
- Each group = 4 hex digits = 16 bits, separated by :
Why not others:
- (a) All addresses are global — false; link-local (fe80::), unique local (fc00::/7), and loopback (::1) are not global
- (b) 96 bits — IPv6 is 128 bits, not 96
- (d) One-to-one correspondence with IPv4 — impossible; IPv6 has 2^128 addresses vs IPv4's 2^32
Key facts:
- IPv6 = 128 bits = 8 groups × 16 bits
- IPv4 = 32 bits = 4 octets × 8 bits
- IPv6 was designed because IPv4 address space is exhausted — not to map 1:1
AI-generated — may contain errors
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