Discuss Juniper JN0-232 Exam Topic 1 Question 6

Which statement is correct about source NAT?

AIt translates MAC addresses to private IP addresses.

BIt translates private IP addresses to public IP addresses.

CIt performs bidirectional IP address translation.

DIt performs translation on ingress traffic only.

Suggested Answer: B

Source NAT (Network Address Translation) is used on SRX devices to allow hosts with private IP addresses to access external networks, such as the Internet. The SRX translates the private IP address of the source host into a public IP address before forwarding traffic toward the destination.

It does not translate MAC addresses (Option A).

NAT is unidirectional in this case: it specifically translates private-to-public in the outbound direction, while the reverse (return traffic) is handled automatically through the session table. It is not a bidirectional translation (Option C).

NAT processing occurs as part of the flow module, not limited only to ingress traffic (Option D).

Therefore, the correct statement is that source NAT translates private IP addresses to public IP addresses.

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23 comments · newest first

Kimberely 1 day ago

A is wrong. MAC addresses aren't involved in NAT.

Lashawna 6 days ago

Agreed, B is the right choice. Private to public is key.

Annice 12 days ago

I think B is correct. It makes sense for NAT.

Hildegarde 17 days ago

Yeah, B is the best answer. It’s common in networking.

Tuyet 22 days ago

I feel confident about B. It’s straightforward.

Felicitas 27 days ago

C is more about destination NAT, though. B is clearer.

Darell 1 month ago

I’m not sure. What about C? Bidirectional sounds interesting.

Ashlyn 1 month ago

Agreed! B is the right choice. Source NAT is all about that.

Brigette 1 month ago

I think B is correct. It makes sense for private to public.

Michal 2 months ago

A is definitely wrong, MAC addresses aren't involved here.

Alpha 2 months ago

C is misleading, it doesn't do bidirectional translation.

Tandra 2 months ago

Wait, does it really only do that? Sounds too simple.

Kimberely 2 months ago

Totally agree, B is spot on!

Lashawna 2 months ago

B is the right answer! It translates private IPs to public.

Eleni 2 months ago

Nah, D is definitely wrong; it’s not just ingress!

Rodney 3 months ago

C could be a trick option, though.

Cherry 3 months ago

Wait, are we sure about that? Sounds too simple.

Rebeca 3 months ago

Totally agree, B makes the most sense.

Jerrod 3 months ago

B is the right answer!

Chara 3 months ago

I’m confused about MAC addresses and IP addresses in this context. I don’t think A is right, but I’m not confident about the others either.

Lai 3 months ago

I practiced a question like this before, and I think source NAT only translates on the outbound traffic, which might make D correct?

Gretchen 4 months ago

I’m not entirely sure, but I remember something about it not doing bidirectional translation, so maybe C is wrong?

Detra 4 months ago

I think source NAT is about translating private IPs to public ones, so I’m leaning towards B.

Juniper JN0-232 Exam - Topic 1 Question 6 Discussion