Palo Alto Networks Exam PCNSA Topic 4 Question 59 Discussion

Actual exam question for Palo Alto Networks's PCNSA exam

Question #: 59
Topic #: 4

[All PCNSA Questions]

In which two types of NAT can oversubscription be used? (Choose two.)

AStatic IP

BDestination NAT

CDynamic IP and Port (DIPP)

DDynamic IP

Show Suggested Answer

Suggested Answer: C, D

Oversubscription is a feature that allows you to use more private IP addresses than public IP addresses for NAT. This means that multiple private IP addresses can share the same public IP address, as long as they use different ports. Oversubscription can be used in two types of NAT: Dynamic IP and Port (DIPP) and Dynamic IP. DIPP NAT translates both the source IP address and the source port number of the outgoing packets, and can have an oversubscription rate greater than 1. Dynamic IP NAT translates only the source IP address of the outgoing packets, and can have an oversubscription rate of 1 or less. Static IP and Destination NAT do not support oversubscription, as they require a one-to-one mapping between the private and public IP addresses.Reference:Source NAT,Configure NAT,NAT

by Jerry at Mar 17, 2024, 10:42 PM

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Jesusa

5 months ago

Hmm, that's a good point, Stevie. Destination NAT could definitely benefit from oversubscription too.

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Stevie

5 months ago

I'm not so sure about that. I think oversubscription can be used in Destination NAT as well.

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Destiny

5 months ago

I agree with Jesusa, oversubscription is commonly used in those two types of NAT.

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Jesusa

5 months ago

I think oversubscription can be used in Static IP and Dynamic IP NAT.

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Natalie

6 months ago

I think oversubscription should also work with Static IP NAT, as it can help conserve public IP addresses by mapping multiple private IP addresses to a single public IP.

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Ammie

6 months ago

That's a good point, Destination NAT can indeed help with oversubscription by allowing multiple hosts to share a single IP address externally.

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Yun

7 months ago

I believe oversubscription can also be used in Destination NAT because it allows multiple internal hosts to be mapped to a single IP address.

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Ardella

7 months ago

I agree with Dynamic IP and Port (DIPP) and Dynamic IP NAT allow for oversubscription.

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Ammie

7 months ago

I think oversubscription can be used in Dynamic IP and Port (DIPP) and Dynamic IP NAT.

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Kimi

8 months ago

Haha, oversubscription, that's like when you have more people trying to use the internet than your bandwidth can handle, right? I bet that's a common problem in my dorm.

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Providencia

8 months ago

I'm not so sure about that. I think Destination NAT might also allow for oversubscription, since you can map multiple external addresses to a single internal address.

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Carole

7 months ago

A) Static IP

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Renay

7 months ago

That's true. Destination NAT does indeed allow for oversubscription.

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Sue

8 months ago

D) Dynamic IP

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Precious

8 months ago

B) Destination NAT

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Mattie

8 months ago

Yes, you are correct. Destination NAT can also allow for oversubscription because it allows mapping multiple external addresses to a single internal address.

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Ardella

8 months ago

C) Dynamic IP and Port (DIPP)

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Wilda

8 months ago

A) Static IP

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Cathrine

8 months ago

Yeah, I agree with Karina. Dynamic IP and Port (DIPP) seems like a good option for oversubscription, since you can map multiple internal addresses to a single external address.

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Karina

8 months ago

Hmm, this looks like a tricky NAT question. I'm not too sure about oversubscription, but I think options B and C might be the correct answers.

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