Company A recently acquired another company. Users of the newly acquired company must be able to access a server that exists on Company A's network, both companies use overlapping IP address ranges. Which action conserves IP address space and provides access to the server?
When two companies with overlapping IP address ranges merge, NAT (Network Address Translation) can be used to enable communication without reconfiguring the entire IP address space. Using a single IP address to create overload NAT (also known as PAT - Port Address Translation) allows multiple users from the newly acquired company to access the server in Company A while conserving IP addresses. This method maps multiple private IP addresses to a single public IP address, using different ports to differentiate the sessions, thus conserving IP address space and providing the required access.
A is not correct. You wouldn't create a NAT to convert every single user from the newly acquired company into one IP address in the other existing company. You would create a static NAT for traffic destined to the server at the network boundary between the 2 companies. Traffic destined to the server from the newly acquired company would be NAT'd to the server IP in Company A.
But you wouldn't know if the server sends traffic back towards the right hosts since the source ip's are not translated... I think it's A, because you need to make sure the source ip's are being translated as well. You are only able to do this with option A.
B seems better option
I lean towards B. It is A server! so statin NAT, makes sense.
Answer is B.
A is rite answer
Here's why: B. Use a single IP address to create a static NAT entry: It's not specific enough, create a Single IP Static NAT Entry of what ? it doesn't specify anything or say it's for the server and it needs to be very clear. C. Build one-to-one NAT translation for every user that needs access: This is not feasible, you are not going to create a Static NAT for every host so this is wrong. D. Re-IP overlapping address space in the acquired company: When you acquire a company with overlapping networks you want to try to avoid re-IP the entire network initially. The question also states you want to keep the same IP Subnet space which means you want to keep things as it is so a redo of IP Subnets is not an option. Leaves us with the only correct answer which is A. It can also be found on the OCG Book on page 15
Why not D. Re-IP overlapping address space in the acquired company ?
Because it is a requirement to conserve subnets
this is a tricky question, many users require to access a server so from source side (clients) point of view, it could be overloading NAT, configuration is simple; or 1 to 1 static NAT for all users also possible. from destination side (server), it may require a static NAT (simple), or a port forwarding NAT in a overloading NAT setup. And according to the question, "Which action conserves IP address space and provides access to the server?" I beleive asking which NAT solution allows client to access to the server so A is correct. or in another way to understand, overloading NAT is able to use in both side, so A is most possible correct one. For B, it only corrects in server side, but on client side, need many static NAT entries
I think the big question here is what adresses reside on both global and local site. Is it the address of the server (answer B) or the clients (answer A).
Provided answer is correct
one to one for the server
A is right answer Get up-to-date https://www.pinterest.com/pin/937522847419119701
A is correct. Get full questions with correct answers <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="cca1adb8b8a5b8a5bf8ca3b9b8a0a3a3a7e2afa3a1">[email protected]</a>
A is correct.