Question

You are designing a new network that will support 6000 computers. You only have 8 registered IP addresses that can be allocated to the employees for external communication so you decide to implement NAT and share the addresses. You want all of these computers to be able to access the Internet at the same time if necessary. Which method of NAT translation should you implement?

1) Static NAT
2) Dynamic NAT
3) PAT (Port Address Translation)
4) NAT64

Answer 1

For a network to support 6000 computers with only 8 external IP addresses, PAT (Port Address Translation) should be implemented, as it allows multiple internal IPs to share a single external IP by using unique port numbers for each session.

Step-by-step explanation:

The appropriate method of NAT (Network Address Translation) to use in a network that needs to support 6000 computers with only 8 registered IP addresses is PAT (Port Address Translation), also known as NAT Overload. Static NAT and Dynamic NAT would not be suitable because they require a one-to-one or many-to-one mapping of internal IP addresses to registered external IP addresses, respectively, which is unfeasible given the limited number of external IP addresses available. PAT, on the other hand, can multiplex several internal IP addresses onto a single registered IP address by using different port numbers to distinguish between connections, allowing all 6000 computers to share the 8 available IP addresses simultaneously. NAT64 is a protocol for translating IPv6 addresses to IPv4, which does not apply to this case, as we're dealing with IPv4 network resource allocation.