IBM C1000-172 Exam - Topic 1 Question 17 Discussion

Actual exam question for IBM's C1000-172 exam

Question #: 17
Topic #: 1

[All C1000-172 Questions]

What describes an IBM Cloud VPN for virtual private cloud (VPC) service security feature?

APassive Peer Detection

BRSA key exchange

CPerfect Forward Secrecy (PFS)

DPost-shared key

Show Suggested Answer

Suggested Answer: C

A security feature of IBM Cloud VPN for virtual private cloud (VPC) service is Perfect Forward Secrecy (PFS).

Perfect Forward Secrecy (PFS): PFS ensures that the compromise of one session key does not compromise the confidentiality of past sessions. It provides additional security for encrypted communications by generating unique keys for each session, making it a critical feature for VPN services.

IBM Cloud VPN for VPC: This service utilizes PFS to secure communication between the cloud environment and external networks, ensuring high levels of data protection and encryption.

Reference from IBM Cloud Professional Architect Materials:

The IBM documentation on IBM Cloud VPN describes PFS as a fundamental security feature for protecting data transmitted over the network.

Other options are incorrect:

A . Passive Peer Detection is not a security feature.

B . RSA key exchange is a cryptographic algorithm but does not describe a VPN-specific security feature.

D . Post-shared key is not a relevant term.

by Honey at Feb 07, 2025, 02:11 AM

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Cristy

5 months ago

Post-shared key seems outdated, right?

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Jennie

5 months ago

Wait, is Passive Peer Detection even a thing? Sounds weird.

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Elbert

5 months ago

Not so sure about that, I thought RSA key exchange was more relevant here.

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Hayley

6 months ago

Agreed, PFS is super important for security!

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Tina

6 months ago

I think it's definitely C, Perfect Forward Secrecy.

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Rochell

6 months ago

Post-shared key sounds familiar, but I can't remember if it's the right answer for this question or if it was something else we covered.

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Daniel

6 months ago

I practiced a similar question where RSA key exchange was highlighted as a security feature, but I don't know if it applies here.

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Josephine

6 months ago

I feel like Passive Peer Detection was mentioned in our study materials, but I can't recall its exact role in VPC security.

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Pansy

7 months ago

I think I remember something about Perfect Forward Secrecy being important for secure communications, but I'm not entirely sure if it's specifically for VPNs.

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Laurel

7 months ago

Ugh, I'm drawing a blank on the specifics of IBM Cloud VPN security. I'll have to guess on this one and hope for the best. Maybe I'll come back to it if I have time at the end.

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Carylon

7 months ago

Okay, I've got this! The key security feature for IBM Cloud VPN is Perfect Forward Secrecy, which ensures that even if a private key is compromised, past communications remain secure. I'm confident that C is the right answer here.

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Aleta

7 months ago

Hmm, I'm a bit unsure about this one. I know IBM Cloud VPN has some advanced security features, but I'm not super familiar with the details. I'll have to think this through carefully and maybe even look up a quick refresher on VPN security.

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Norah

7 months ago

This looks like a security-related question, so I'll focus on understanding the key security features of IBM Cloud VPN. I think the answer is likely C, Perfect Forward Secrecy, but I'll double-check the other options to be sure.

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