Eccouncil 212-81 Exam - Topic 5 Question 48 Discussion

Actual exam question for Eccouncil's 212-81 exam

Question #: 48
Topic #: 5

[All 212-81 Questions]

What is an IV?

ARandom bits added to a hash

BThe key used for a cryptography algorith

CA fixed size random stream that is added to a block cipher to increase randomeness

DThe cipher used

Show Suggested Answer

Suggested Answer: D

https://en.wikipedia.org/wiki/Modulo_operation

The modulo operation returns the remainder or signed remainder of a division, after one number is divided by another (called the modulus of the operation).

Given two positive numbers a and n, a modulo n (abbreviated as a mod n) is the remainder of the Euclidean division of a by n, where a is the dividend and n is the divisor. The modulo operation is to be distinguished from the symbol mod, which refers to the modulus (or divisor) one is operating from.

For example, the expression '5 mod 2' would evaluate to 1, because 5 divided by 2 has a quotient of 2 and a remainder of 1, while '9 mod 3' would evaluate to 0, because the division of 9 by 3 has a quotient of 3 and a remainder of 0; there is nothing to subtract from 9 after multiplying 3 times 3.

by Eric at Nov 19, 2024, 07:05 PM

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Sarina

3 months ago

I’m not so sure about C, sounds a bit too technical.

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Ahmed

3 months ago

C is correct, no doubt about it!

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Ruthann

3 months ago

Wait, isn't an IV just random bits?

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Joni

4 months ago

I thought it was B at first, but C makes more sense.

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Carla

4 months ago

It's definitely C! IVs are all about randomness.

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Tish

4 months ago

I’m leaning towards option C too, but I’m a bit confused about how it differs from just a random key.

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Golda

4 months ago

I feel like I’ve seen a question similar to this before, but I can’t recall if it was about IVs or something else in cryptography.

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Asha

4 months ago

I remember studying that an IV is used to add randomness to block ciphers, so I think option C sounds right.

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Alise

5 months ago

I think an IV is related to encryption, but I'm not entirely sure if it's just random bits or something more specific.

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Hyman

5 months ago

Ah, I remember learning about IVs in class. They're used to increase the randomness of a block cipher, so I'm going to select option C.

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Edmond

5 months ago

Random bits added to a hash? That doesn't sound right. I think an IV has something to do with encryption, so I'll go with option B.

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Norah

5 months ago

Hmm, I'm a bit confused on this one. Is an IV the key used for a cryptography algorithm? I'll have to think about this one a bit more.

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Olive

5 months ago

I'm pretty sure an IV is a fixed size random stream that is added to a block cipher to increase randomness, so I'll go with option C.

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Lizette

10 months ago

I'm going with C. Adding a random stream to a block cipher just seems like the kind of thing they'd ask about in a crypto exam.

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Matt

8 months ago

I'm not sure, but I'll go with B. The key used for a cryptography algorithm seems like a possibility.

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Mila

8 months ago

I think it's A. Random bits added to a hash sounds like it could be an IV.

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Lawrence

9 months ago

I'm going with C. Adding a random stream to a block cipher just seems like the kind of thing they'd ask about in a crypto exam.

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Barrett

10 months ago

B) The key used for a cryptography algorithm - that's my guess, but I'm not totally sure.

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Magnolia

9 months ago

C) A fixed size random stream that is added to a block cipher to increase randomness

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Francesco

9 months ago

B) The key used for a cryptography algorithm - that's my guess, but I'm not totally sure.

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Justa

9 months ago

A) Random bits added to a hash

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Craig

10 months ago

IV? I thought that was just for when you need to give someone fluids in the hospital. What does that have to do with cryptography?

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Domingo

9 months ago

IV stands for Initialization Vector and it is used in cryptography to add randomness to encryption

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Francoise

9 months ago

C) A fixed size random stream that is added to a block cipher to increase randomness

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Novella

9 months ago

A) Random bits added to a hash

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Lachelle

10 months ago

I agree with Francine. An IV helps to make the encryption more secure by adding randomness to the process.

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Deeanna

11 months ago

C) A fixed size random stream that is added to a block cipher to increase randomness - that sounds like the most technical and likely correct answer.

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Shenika

9 months ago

B) The key used for a cryptography algorithm

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Graham

9 months ago

A) Random bits added to a hash

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Annamae

10 months ago

C) A fixed size random stream that is added to a block cipher to increase randomness

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Afton

10 months ago

B) The key used for a cryptography algorithm

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Antione

10 months ago

A) Random bits added to a hash

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Lorita

11 months ago

IV? Hmm, maybe it stands for 'Intravenous'? I bet that's not the right answer here.

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Francine

11 months ago

I think an IV is a fixed size random stream that is added to a block cipher to increase randomness.

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Katie

11 months ago

What is an IV?

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