200-101 Question #84: Real Exam Question with Answer & Explanation

The correct answer is B: A single interface may be assigned multiple IPv6 addresses of any type.. B is correct: A single IPv6 interface can be - and routinely is - assigned multiple addresses simultaneously. For example, an interface typically has at least a link-local address (FE80::/10) automatically, and may also have one or more global unicast addresses and a site-local a

Question

Which two of these statements are true of IPv6 address representation? (Choose two.)

Options

AThere are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
BA single interface may be assigned multiple IPv6 addresses of any type.
CEvery IPv6 interface contains at least one loopback address.
DThe first 64 bits represent the dynamically created interface ID.
ELeading zeros in an IPv6 16 bit hexadecimal field are mandatory.

Explanation

B is correct: A single IPv6 interface can be - and routinely is - assigned multiple addresses simultaneously. For example, an interface typically has at least a link-local address (FE80::/10) automatically, and may also have one or more global unicast addresses and a site-local address. C is correct: Every IPv6-capable host has a loopback interface assigned the address ::1, and each active interface is automatically assigned a link-local address - meaning every IPv6-enabled interface effectively has at least one address at all times. A is incorrect: IPv6 defines only three address types - unicast, multicast, and anycast. Broadcast does not exist in IPv6. D is incorrect: In a standard 128-bit IPv6 address, the first 64 bits are the network prefix, and the last 64 bits are the interface identifier (often derived from the MAC address via EUI-64). E is incorrect: Leading zeros within each 16-bit group can be omitted in IPv6 notation (e.g., 0012 can be written as 12).

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