You are planning to implement dual stack of IPv4 and IPv6 in your network. Currently, your network consists of servers, routers, and switches that have not been upgraded for several years. You are still running the Windows Server 2003. When implementing dual stack, which of the following will be your primary concerns? [Choose all that apply].
a) Ensuring the same service-levels for the dual stack
b) Ensuring that the hardware and software support the implementation
c) Keeping the hardware and software costs under control
d) Ensuring that Internet Service Providers (ISPs) work with IPv6

The primary concerns will be ensuring that the hardware and software support the implementation (B); keeping the hardware and software costs under control (C). The dual-stack IPs can run in parallel.

IPv4, IPv6 and dual-stack

Internet Protocol version 4 (IPv4) refers to the fourth version of the Internet Protocol (IP), whereas IPv6 is the sixth version of this protocol.

The most important difference between these IPs (IPv4 and IPv6) is the size of the IP addresses.

The term 'dual stack' indicates that a given computer device is capable of running IPv4 and IPv6 in parallel.

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