Designing Cisco Enterprise Networks (ENSLD) — Question 318

A company wants to deploy IPv6 within its existing network infrastructure. All current infrastructure equipment supports IPv6, and the company wants a migration strategy that must not require purchasing additional equipment. The plan must keep operational management costs low, support IPv6 multicast, and allow applications to migrate using DNS. Which strategy must the company choose?

Answer options

• A. hybrid ISATAP tunnel model
• B. hybrid manual tunnel model
• C. dual-stack model
• D. service block model

Correct answer: C

Explanation

The dual-stack model is the best choice as it allows both IPv4 and IPv6 to run simultaneously, facilitating a smooth transition without the need for new equipment. The hybrid ISATAP tunnel and hybrid manual tunnel models involve tunneling mechanisms which can complicate the setup and may not support all operational requirements as effectively. The service block model does not directly address the need for low management costs and application migration through DNS.