SCP Exam SC0-501 Topic 2 Question 102 Discussion

Actual exam question for SCP's SC0-501 exam

Question #: 102
Topic #: 2

One important X.509v3 extension in a digital certificte is the SubjectKeyldentifier. What is the purpose of this field?

AThis extension contains a hash of the end entity's private key. This allows a user to decrypt the end entity's private key using the publisheed public key and recalulate the hash value of the private key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the end entity can be validated.

BThis extension contains a hash of the subject's This allows a user to decrypt the subject's private key using the publisheed public key and recalulate the hash value of the private key on the certificate to look for a match.If the calculation matches the SubjectKeyldentifier value, then the subject can be validated.

CThis extension has a hash of the subject's public key. This allows a user to calculate the hash value of the public key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the subject can be validated.

DThis extension has a hash of the issue's public key. This allows a user to calculate the hash value of the public key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the CA can be validated.

Show Suggested Answer

Suggested Answer: D

by Chaya at Oct 21, 2024, 11:34 PM

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Thaddeus

1 months ago

Ugh, these X.509 questions are the worst. I'm just going to guess C and hope for the best. At least it's multiple choice, right? Could be worse, could be one of those 'select all that apply' nightmares.

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Sherron

5 days ago

Let's hope for the best with our guesses. Multiple choice questions can be tricky.

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Graham

11 days ago

Yeah, I agree. It's definitely important to validate the subject using the SubjectKeyldentifier.

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Belen

12 days ago

I think C is a good guess. It's all about that hash value of the subject's public key.

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Colette

1 months ago

Ah, the age-old question of SubjectKeyIdentifier. I'm going to go with C as well. It just makes the most sense to me. Although, I do love a good 'decrypt the private key' joke, so B had me chuckling a bit.

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Fatima

2 months ago

I'm going with C. The hash of the subject's public key seems the most logical purpose for this extension. It's a way to uniquely identify the certificate holder.

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Yen

5 days ago

B) This extension contains a hash of the subject's This allows a user to decrypt the subject's private key using the publisheed public key and recalulate the hash value of the private key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the subject can be validated.

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Christiane

6 days ago

I'm not sure about that. I think B makes more sense. The hash of the subject's private key would be more secure for identification purposes.

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Sarah

14 days ago

A) This extension contains a hash of the end entity's private key. This allows a user to decrypt the end entity's private key using the publisheed public key and recalulate the hash value of the private key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the end entity can be validated.

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William

1 months ago

C) This extension has a hash of the subject's public key. This allows a user to calculate the hash value of the public key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the subject can be validated.

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Jeffrey

2 months ago

I was leaning towards B, but now I'm second-guessing myself. Can't the SubjectKeyIdentifier also be used to validate the subject's identity? This stuff can get so confusing sometimes.

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Jerry

2 months ago

Hmm, this one's tricky. I think the answer is C, but I'm not 100% sure. The SubjectKeyIdentifier is supposed to contain a hash of the subject's public key, right?

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Nu

29 days ago

D) This extension has a hash of the issue's public key. This allows a user to calculate the hash value of the public key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the CA can be validated.

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Josphine

30 days ago

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Joye

1 months ago

B) This extension contains a hash of the subject's This allows a user to decrypt the subject's private key using the publisheed public key and recalulate the hash value of the private key on the certificate to look for a match.If the calculation matches the SubjectKeyldentifier value, then the subject can be validated.

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Evangelina

1 months ago

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Cammy

2 months ago

I agree with you, Gerardo. This allows a user to validate the subject by matching the hash value of the public key.

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Gerardo

3 months ago

I think the purpose of the SubjectKeyIdentifier is to contain a hash of the subject's public key.

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