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300-410 Practice Question: Which statement correctly describes the behavior…
Which statement correctly describes the behavior of ISATAP tunneling regarding host configuration?
⚠ Common exam trap
Cisco often tests the distinction between ISATAP and 6to4 tunneling, and the trap here is confusing the 2002::/16 prefix (used by 6to4) with ISATAP's use of a site-specific prefix and the embedded IPv4 address in the interface ID.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
ISATAP embeds the IPv4 address into the interface identifier (last 64 bits) of the IPv6 address.
ISATAP (Intra-Site Automatic Tunnel Addressing Protocol) automatically generates the IPv6 address by embedding the host's IPv4 address into the interface identifier (the last 64 bits of the IPv6 address). This allows hosts to obtain a complete IPv6 address without manual configuration of the full 128-bit address, as the IPv4 address is used to form the unique interface ID. Option C correctly describes this behavior.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ISATAP requires manual configuration of the entire IPv6 address on each host.
Why it's wrong here
ISATAP automates address configuration using the embedded IPv4 address.
- ✗
ISATAP uses the prefix 2002::/16 for global addresses.
Why it's wrong here
2002::/16 is used by 6to4, not ISATAP.
- ✓
ISATAP embeds the IPv4 address into the interface identifier (last 64 bits) of the IPv6 address.
Why this is correct
ISATAP uses the format ::5EFE:IPv4-address for the interface identifier.
- ✗
ISATAP is only used for site-to-site tunnels.
Why it's wrong here
ISATAP is designed for intra-site communication, not site-to-site.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.