Unit 4 Test

A financial services company needs to send sensitive transaction details to a partner organization. To ensure confidentiality, they decide to use encryption. The key used to encrypt the data is different from the one used to decrypt it. What type of encryption are they using?

• Hashing

• Symmetric encryption

• Asymmetric encryption

• Obfuscation

An application development team is tasked with releasing a software tool to the public but wants to protect proprietary algorithms within the code. They modify the source code to make it harder to interpret. Which technique are they using?

• A) Encryption

• B) Tokenization

• C) Obfuscation

• D) Hashing

A journalist wants to send sensitive information hidden inside an image to a whistleblower. Which technique can they use to conceal the information without encrypting it?

• A) Encryption

• B) Steganography

• C) Obfuscation

• D) Hashing

What is the purpose of steganography?

• To encrypt data using complex keys

• To mask sensitive data in a database

• To hide data within other files or media

• To generate unique hashes for file integrity

A healthcare organization processes sensitive patient data. Instead of storing Social Security numbers directly, they replace them with unique identifiers that have no mathematical relationship to the original data. What method is this?

• Data masking

• Tokenization

• Encryption

• Salting

During software testing, a company replaces actual customer account numbers with fake but realistic-looking account numbers in their test environment. What technique are they using?

• Data masking

• Tokenization

• Obfuscation

• Hashing

An IT administrator needs to verify that a downloaded software file has not been tampered with. They compare a unique string provided by the software vendor with the one generated from the downloaded file. What method are they using?

• Symmetric encryption

• Hashing

• Salting

• Obfuscation

A security researcher discovers that two different files generate the same MD5 hash. What does this scenario illustrate?

• Salting

• A collision

• Key escrow

• Digital certificate compromise

A company implements a login system that uses salted hashes for password storage. What is the primary reason for adding a salt to the hash?

• A) To make hashing faster

• B) To ensure hash values are unique even for identical passwords

• C) To encrypt passwords with keys

• D) To validate digital signatures.

Jeb received an email that claims to be from the Social Security Office. He noticed it had a digital signature. What assurance does a digital signature provide?

• The email is encrypted

• The document came from the Social Security Office and was not altered

• The email was not intercepted during transit

• The document is safe from malware.