Designing Cisco Enterprise Networks (ENSLD) — Question 139

An architect is creating a migration strategy for a large organization in which the choice made by the application between IPv6 and IPv4 is based on the DNS request. Which migration strategy does the architect choose?

Answer options

• A. AFT for public web presence
• B. host-initiated tunnels
• C. dual-stack
• D. site-to-site IPv6 over IPv4 tunnels

Correct answer: C

Explanation

The dual-stack approach allows applications to use both IPv6 and IPv4 simultaneously, making it suitable for scenarios where the choice is dependent on DNS requests. Options like AFT are focused on public web presence, while host-initiated tunnels and site-to-site tunnels are less flexible for applications needing to switch protocols based on DNS.