D é a verdadeira, porém... Port Block Allocation e Overload fazem PAT, não podem ser verdadeiras. Destination NAT não é aplicada na política e sim no menu VIP (sem Central NAT) ou DNAT & VIP (com Central NAT). Não é possível garantir que se trata de One-to-one NAT pois a saída de Fixed Port Range NAT é a mesma. Logo, como questão só tem a opção One-to-one NAT, acredito que ela seja a verdadeira.
Might I suggest that Destination NAT being disabled is actually the only conclusive true statement? Speaking of SNAT, default "use interface ip address", and running the same command, shows that some sessions where SNAT is applied might keep source-port intact, its assumed that it will overload and start applying PAT at some point, but it doesn't actually always occur. In fact you can set the policy to preserve source-port, even while configuring dynamic pool with overload and (naturally) one-to-one. C and D can both generate the same output in the end if we can't see the policy configuration... IMHO
no way, your stamtment is true , Overload not always do PAT when there are few sessionst.But you can't enable DNAT in the firewall policy... so the answere is D. moreover you cant say it's ovlerload nor Port block allocation beacuse they are same pool type.
Why it cannot be C ?
one to one
10.1.0.1 SNAT 10.200.1.1
10.1.0.2 SNAT 10.200.1.2
etc....
overload :
10.1.0.1 SNAT 10.200.1.1
10.1.0.2 SNAT 10.200.1.1
etc....
but here we have only one source... It's impossible to compare overload vs one-to-one ?
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