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Linux Foundation LFCA Exam - Topic 5 Question 41 Discussion

Actual exam question for Linux Foundation's LFCA exam

Question #: 41
Topic #: 5

[All LFCA Questions]

Encryption that uses both a private key and public key is known as what?

AKey Pair Encryption (symmetric cryptography)

BHMAC Cryptography (hash based message authentication]

CPublic Key Cryptography (asymmetric cryptography)

DDPE (dual-phased hybrid encryption]

Show Suggested Answer

Suggested Answer: C

by Fernanda at Apr 08, 2025, 04:50 PM

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Jeff

8 months ago

C makes the most sense, but I can see why some might be confused.

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Sherman

8 months ago

Totally agree, C is the right answer!

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Shayne

8 months ago

Wait, isn't it A? I thought symmetric was the key pair one.

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Joaquin

8 months ago

I had no idea it was called that! Surprised to learn something new!

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Adaline

8 months ago

It's definitely C, Public Key Cryptography!

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Laura

9 months ago

I vaguely recall something about dual-phased hybrid encryption, but it seems less common than the other options.

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Lenna

9 months ago

I feel like HMAC was more about message integrity, not really about the keys themselves.

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Laquanda

9 months ago

I remember studying something about key pairs, but I thought that was more related to symmetric cryptography.

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Fausto

9 months ago

I think it's called Public Key Cryptography, but I’m not entirely sure if that’s the same as asymmetric cryptography.

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Genevive

9 months ago

I'm not too familiar with the specific terms used in this question. I'll have to guess and hope I get it right. Maybe I can eliminate a couple of the options that don't sound right.

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Aileen

10 months ago

Ah, I remember learning about this in class. Public key cryptography uses a pair of keys - a public key for encryption and a private key for decryption. Option C is the correct answer.

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Chan

10 months ago

Hmm, I'm a bit confused on the difference between symmetric and asymmetric cryptography. I'll have to think this through carefully before selecting an answer.

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Ming

10 months ago

I'm pretty sure this is asking about public key cryptography, where you have a public key for encryption and a private key for decryption. I'll go with option C.

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Devora

1 year ago

I bet the answer is C. Public Key Cryptography. I mean, who even uses DPE these days? Sounds like a made-up term to me.

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Maryann

1 year ago

This is a piece of cake! It's definitely C. Public Key Cryptography. I could do this in my sleep.

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Rosio

1 year ago

I'm confident it's C. Public Key Cryptography.

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Johnetta

1 year ago

I think you're right, it's C. Public Key Cryptography.

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Annice

1 year ago

I agree, it's definitely C. Public Key Cryptography.

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Lynna

1 year ago

Hmm, I'm torn between B and C. But I'll go with C. Public Key Cryptography, it just makes more sense.

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Taryn

1 year ago

C. Public Key Cryptography (asymmetric cryptography) is the answer. I remember learning about this in my security class.

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Tonja

1 year ago

I remember learning about this in my security class too.

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Leeann

1 year ago

Yes, you're right. It involves using both a private key and a public key.

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Chauncey

1 year ago

I think the answer is C. Public Key Cryptography (asymmetric cryptography)

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Ronnie

1 year ago

I'm going with D. DPE (dual-phased hybrid encryption). It has both public and private keys, so it's gotta be that one.

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Vi

1 year ago

I agree with you, DPE (dual-phased hybrid encryption) sounds like the right choice.

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Truman

1 year ago

I'm not sure, but I'll go with A. Key Pair Encryption (symmetric cryptography).

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Steffanie

1 year ago

I think it's C. Public Key Cryptography (asymmetric cryptography).

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Desirae

1 year ago

I think it's C. Public Key Cryptography (asymmetric cryptography). Sounds like the right description to me.

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Elizabeth

1 year ago

Yes, C) Public Key Cryptography is the encryption that uses both a private key and public key.

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German

1 year ago

I'm not sure, but C) Public Key Cryptography sounds right to me.

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Annmarie

1 year ago

I think it's C too. Public Key Cryptography makes sense.

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Arlie

1 year ago

I agree, C) Public Key Cryptography (asymmetric cryptography) is the correct answer.

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Eliz

1 year ago

Yes, that's right. It involves using both a public key and a private key for encryption.

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Amber

1 year ago

I agree, C. Public Key Cryptography (asymmetric cryptography) is the correct answer.

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Cecily

1 year ago

I'm not sure, but I think it's either A) Key Pair Encryption or C) Public Key Cryptography.

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Elza

1 year ago

I agree with Bev, because public key cryptography uses both a private key and public key for encryption.

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Bev

1 year ago

I think the answer is C) Public Key Cryptography.

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