Cisco Certified Network Professional 2026 – 400 Free Practice Questions to Pass the Exam

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What does running dual stack in networking refer to?

Operating IPv4 alone

Operating IPv6 alone

Running IPv4 and IPv6 simultaneously

Running dual stack in networking refers to the implementation of both Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) simultaneously on a network device. This approach allows networks and devices to communicate using both IPv4 and IPv6 addresses. Dual stack supports the gradual transition to IPv6, which is essential as the availability of IPv4 addresses diminishes. With the dual stack configuration, networks can seamlessly handle traffic from both protocols, ensuring compatibility and connectivity with a wider range of devices and services during the migration period.

Implementing a dual stack enhances network flexibility, improves interoperability, and maintains service continuity. This strategy is particularly important as many organizations still rely heavily on IPv4 while also needing to incorporate new devices and services that utilize IPv6.

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Running IPv4 over IPv6

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