GIAC Exam GCIA Topic 5 Question 41 Discussion

Actual exam question for GIAC's GCIA exam

Question #: 41
Topic #: 5

[All GCIA Questions]

Which of the following algorithms is used as a default algorithm for ESP extension header in IPv6?

APropagating Cipher Block Chaining (PCBC) Mode

BCipher Block Chaining (CBC) Mode

CCipher Feedback (CFB) Mode

DElectronic Codebook (ECB) Mode

Show Suggested Answer

Suggested Answer: B

by Laurel at Mar 19, 2024, 03:27 AM

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Jaime

7 months ago

That's a valid point, Ruth. CFB mode does offer some advantages as well.

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Ruth

7 months ago

I believe it could also be Cipher Feedback (CFB) Mode, as it provides a self-synchronizing stream encryption.

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Janey

7 months ago

I agree with you, Jaime. CBC mode provides confidentiality for payload data.

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Jaime

7 months ago

I think the default algorithm for ESP extension header in IPv6 is Cipher Block Chaining (CBC) Mode.

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Jacquelyne

8 months ago

I see, but I think CFB mode is more commonly used in IPv6 networks for encryption.

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Pamella

8 months ago

I read that PCBC mode provides stronger encryption compared to other modes.

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Lenora

8 months ago

Why do you think it's PCBC mode, Pamella?

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Jacquelyne

8 months ago

I'm pretty sure it's CFB mode.

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Pamella

9 months ago

I disagree, I believe it is PCBC mode.

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Lenora

9 months ago

I think the default algorithm for ESP extension header in IPv6 is CBC mode.

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