What is the primary purpose of the RandomNumberGenerator class in .NET?

To generate pseudo-random numbers for simulations and games

To generate cryptographically secure random numbers for keys, IVs, and salts

To encrypt and decrypt data using symmetric algorithms

To compute hash values for data integrity

A developer is implementing password-based encryption and needs to derive a 256-bit key from a passphrase. They are using Rfc2898DeriveBytes. Which constructor parameter determines the length of the derived key?

The algorithm name passed to the constructor

The third parameter (number of iterations)

The call to GetBytes(int keyLength)

EC-CouncilCertified Application Security Engineer (.NET)

Domain 5Objective 5

.NET Cryptography Namespaces and Class Hierarchy CASENET Practice Questions (Page 4)

Part of the Secure Coding: Cryptography domain, which makes up ~12% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~6–10 in this domain), expect 1–2 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

8concepts

Questions 16–20

16foundation · easy
Which interface is implemented by classes that perform cryptographic transformations, such as encryptors and decryptors, and is used with CryptoStream?
Select an answer first
17foundation · easy
What is the primary purpose of the RandomNumberGenerator class in .NET?
Select an answer first
18foundation · easy
In the .NET cryptography class hierarchy, which class is the common base for all symmetric encryption algorithms?
Select an answer first
19application · medium
A developer is generating a salt for password hashing. The salt must be unique and unpredictable. Which class should be used to generate the salt?
Select an answer first
20application · medium
A developer is implementing password-based encryption and needs to derive a 256-bit key from a passphrase. They are using Rfc2898DeriveBytes. Which constructor parameter determines the length of the derived key?
Select an answer first

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.NET Cryptography Namespaces and Class Hierarchy CASENET Practice Questions (Page 4)

Questions 16–20

Which interface is implemented by classes that perform cryptographic transformations, such as encryptors and decryptors, and is used with CryptoStream?

What is the primary purpose of the RandomNumberGenerator class in .NET?

In the .NET cryptography class hierarchy, which class is the common base for all symmetric encryption algorithms?

A developer is generating a salt for password hashing. The salt must be unique and unpredictable. Which class should be used to generate the salt?

A developer is implementing password-based encryption and needs to derive a 256-bit key from a passphrase. They are using Rfc2898DeriveBytes. Which constructor parameter determines the length of the derived key?

Keep studying — Secure Coding: Cryptography