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Cryptographic Algorithms

5 minutes 5 Questions

AWS KMS uses several cryptographic algorithms to provide security and encryption features. One of the primary algorithms used is the Advanced Encryption Standard (AES) with 256-bit key length, which is a symmetric encryption algorithm. AES-256 provides a high level of security and performance for t…

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AWS Certified Solutions Architect - Cryptographic Algorithms Example Questions

Test your knowledge of Cryptographic Algorithms

Question 1

A distributed application hosted on AWS requires the maximum level of confidentiality using encryption. Which AWS service, if any, should be used?

Correct Answer: AWS Key Management Service (KMS)

AWS Key Management Service (KMS) should be used for providing the maximum level of encryption on an application. AWS KMS enables you to centralize key management through the creation, storage, and control of encryption keys across AWS services.

Question 2

A healthcare company needs to securely transfer patient records between S3 buckets, they want sufficient encryption for transferring sensitive files. Which client-side encrypted data is supported by Amazon S3?

Correct Answer: Envelope encryption

For transferring sensitive data, Amazon S3 uses envelope encryption, which is a combination of symmetric and asymmetric keys. The data is encrypted under the symmetric key, and then the symmetric key is further encrypted with a public key provided by AWS Key Management Service (KMS).

Question 3

An insurance company has an application that processes sensitive financial data on EC2 instances. All data must be encrypted in transit and at rest. What encryption method should you use for data on EBS volumes?

Correct Answer: AWS KMS

For EBS volumes, use AWS Key Management Service (KMS). AWS KMS helps manage cryptographic keys for your applications, which are required for encrypting and decrypting data on EBS volumes. With EBS and AWS KMS, data is encrypted at rest at the volume, disk, and block level.

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