Cisco Exam 300-420 Topic 8 Question 110 Discussion

Actual exam question for Cisco's 300-420 exam

Question #: 110
Topic #: 8

[All 300-420 Questions]

Which AES mode should be used in a Cisco SD-WAN environment that includes multicast applications?

ACipher Feedback (CFB)

BCipher Block Chaining (CBC)

CGalois/Counter Mode (GCM)

DElectronic Code Book (ECB)

Show Suggested Answer

Suggested Answer: C

by Luis at Apr 06, 2025, 07:00 AM

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Herminia

6 days ago

I'll go with C. GCM. Gotta keep that data safe, especially with multicast. Although, maybe I should have gone with the Galactic Crypto Mode instead, just to spice things up a bit.

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Claudia

9 days ago

I agree with In, GCM provides both encryption and authentication.

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Phyliss

10 days ago

Definitely GCM. It's the industry standard for secure multicast these days. ECB is a big no-no, everyone knows that!

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Emerson

13 days ago

Hmm, I'd have to say option C. GCM is designed for authenticated encryption, which is perfect for Cisco's SD-WAN with multicast.

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Bette

17 days ago

I'm pretty sure GCM is the way to go for secure multicast in a Cisco SD-WAN environment. It's fast and versatile.

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In

23 days ago

I think we should use Galois/Counter Mode (GCM) for multicast applications.

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