Exam 350-401 topic 1 question 595 discussion

Since only 2 NATs in pool, and more then 2 are needed. Then overloading may be the best NAT choice.

The exhibit states that "address allocation failed for 10.0.3.1, pool NAT might be exhausted." Since we're not using PAT, the 2 addresses in the pool can no longer be assigned to other internal hosts.

My answer is B because it's not a solution, it's just a scenario that can be causing the problem. I'm not sure if you can tell from the logs what the NAT ACL is (please correct me if I'm wrong), but you CAN tell that the pool only allows for 2 NAT IP addresses: 198.51.100.5 and 198.51.100.6. Additionally, from the logs you can tell that the NAT Pool is exhausted and it's dropping ICMP polls from hosts that don't have a NAT mapping. Therefore, if you need more than 2 hosts to have access to the outside, you'd need more than the 2-IP NAT pool. "The NAT pool is too small" would be a fine answer if it was a choice, but the next best thing is to say the translation doesn't allow overloading, which would allow more hosts to be translated after the first 2 IPs in the pool are used up.

the question is what's causing the problem based on the logs so the answer should be C.

B is correct read the logs at the beginning NAT pool might be exhausted, in the example the way to fix it is with PAT A-doesn't matter C- the question mentioned "hosts changing over time" this eliminate C completely cause the example is not showing information about the ACL to refare to it D- not correct the pool is defined with start end IPs, mask doesn't matter here

The question asks what is the cause and not what is the solution So I'd go with C as it does not match all internal hosts so also the extend of the pool is a solution as the mask of the pool is /24