Arcitura Education S90.18 Exam - Topic 5 Question 65 Discussion

Actual exam question for Arcitura Education's S90.18 exam

Question #: 65
Topic #: 5

Service A hashes a message, resulting in message digest X. Service A encrypts the message digest X with its private key, resulting ir ciphertext X1. Service A sends the message and X1 to Service B . Service B hashes the message, resulting in message digest Y. Service B decrypts X1 with Service A's public key, recovering message digest X. Service B compares Y with X and finds them to be equal. This proves that:

Athe message was not altered

Bonly Service A sent this particular message

Cpublic key cryptography was used

DAll of the above

Show Suggested Answer

Suggested Answer: D

by Teri at Feb 02, 2023, 12:53 PM

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Mabelle

4 months ago

All of the above makes sense to me!

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Verda

4 months ago

Public key cryptography is definitely in play here.

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Britt

4 months ago

Wait, how does this prove that? Sounds a bit off.

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Dolores

4 months ago

Totally agree, but also, only Service A could've sent it.

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King

4 months ago

The message was not altered, that's a key point!

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Ellsworth

5 months ago

I definitely recall that public key cryptography was involved, but I’m not sure if that’s the only thing we can conclude from this scenario. It feels like there's more to it.

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Dorothy

5 months ago

I feel like I might be mixing up the concepts here. I know that comparing the digests shows integrity, but does it really confirm that only Service A sent the message?

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Skye

5 months ago

This reminds me of a practice question where we had to identify what a digital signature proves. I think it might be option D since it covers all aspects mentioned.

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Kristin

5 months ago

I remember studying how hashing and encryption work together, but I'm not entirely sure if the answer is just about the message being unaltered or if it proves more than that.

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Reita

5 months ago

I'm feeling pretty confident about this one. Case sensitivity is a common programming concept, so I think I can apply that knowledge to select the right answer.

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Craig

5 months ago

I think the fishbone diagram is sometimes called a cause and effect diagram, but I'm not entirely sure.

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Lynda

5 months ago

I remember discussing the importance of using non-root accounts for administrative tasks. Using the root account seems risky.

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Marisha

5 months ago

I'm pretty confident about this one. HTTPS uses TCP port 443 as the default port, and it's a protocol used in the URL address line to connect to a secure site.

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