Discuss GIAC GISP Exam Topic 1 Question 38

Which of the following statements about DES (Data Encryption Standard) is true?

AIts most widely used symmetric encryption algorithm uses a 56-bit key.

BIts most widely used symmetric encryption algorithm uses a 32-bit key.

CIts most widely used symmetric encryption algorithm uses a 128-bit key.

DIts most widely used symmetric encryption algorithm uses a 64-bit key.

Suggested Answer: A

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17 comments · newest first

Lynelle 10 months ago

Surprised people still confuse this, it's been around forever!

Beata 11 months ago

Nope, definitely A, 56 bits is the standard.

Kiera 11 months ago

Wait, I thought it was 64 bits?

Carry 11 months ago

Totally agree, A is the right answer!

Justine 11 months ago

A is correct, DES uses a 56-bit key.

Evan 11 months ago

I thought DES was 64 bits, but I guess that includes the parity bits, so maybe it’s actually 56 bits for the key itself?

Brynn 12 months ago

I’m pretty confident that DES is the one with the 56-bit key, but I keep mixing it up with AES and its 128-bit key.

Lynelle 12 months ago

I remember practicing a question about symmetric encryption algorithms, and I think 64-bit keys were mentioned, but that might be for something else.

Shawnee 12 months ago

I think DES uses a 56-bit key, but I'm not completely sure if that's the only thing I need to remember about it.

Louisa 1 year ago

I've got this one! DES definitely uses a 56-bit key, so I'm confident in selecting option A.

Wei 1 year ago

Okay, I remember learning about DES in class. I think the 56-bit key is the right answer, but I'll review my notes to be sure.

Davida 1 year ago

The key size is an important detail, so I'll make sure to double-check that before answering.

Dominque 1 year ago

Hmm, I'm a bit confused on the details of DES. I'll have to think this through carefully.

Tequila 1 year ago

I'm pretty sure DES uses a 56-bit key, so I'll go with option A.

Sabina 1 year ago

This one seems pretty straightforward. I'm pretty confident that the answer is A - OpenGL/ES and SGL.

Melina 1 year ago

I think this question is asking about the responsibilities of the P3O Sponsor role, so I'll need to focus on that. The options seem to cover different aspects of the role, so I'll need to carefully consider each one.

Kimberlie 1 year ago

I'm a bit confused by the wording of the statements. I'll need to read through them carefully to determine which one is true.

GIAC GISP Exam - Topic 1 Question 38 Discussion