A security analyst is investigating a suspected data breach. The analyst has a copy of a file that was allegedly modified. The analyst also has the original hash of the file. Which action should the analyst take to confirm the file was modified?

Check the file's metadata for modification date.

Verify the digital signature of the file.

Compute the hash of the current file and compare it to the original hash.

Decrypt the file and compare it to the original.

A consortium of banks wants to create a shared, tamper-evident ledger of interbank transactions. They require that once a transaction is recorded, it cannot be altered without detection. Which technology is best suited for this requirement?

A distributed file system with no access controls.

A blockchain where each block contains a hash of the previous block.

A simple spreadsheet shared via email.

A centralized database with a single administrator.

Which application is a common use of blockchain technology?

Encrypting email communications

Providing real-time antivirus updates

Tracking the provenance of goods in a supply chain

A financial firm is required to store customer transaction data at rest. They must ensure that if a storage drive is stolen, the data remains unreadable. Additionally, they need to detect any unauthorized modification to the stored data. Which approach best satisfies both requirements?

Use AES-256 encryption for the data and store a SHA-256 hash of the data separately.

Use base64 encoding to obfuscate the data and rely on file permissions for security.

Use a simple substitution cipher and rely on the operating system's audit logs.

Use RSA encryption with a 2048-bit key and store the private key on the same drive.

CompTIASecurity+

Domain 1Objective 4

Cryptographic Solutions SY0-701 Practice Questions (Page 3)

Part of the General security concepts domain, which accounts for 12% of the SY0-701 exam. CompTIA does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–2 from this objective — we provide 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

6concepts

12%of the exam

Questions 11–15

11foundation · easy
Which technique is used to make data less readable without requiring a key for reversal?
Select an answer first
12expert · hard
A security analyst is investigating a suspected data breach. The analyst has a copy of a file that was allegedly modified. The analyst also has the original hash of the file. Which action should the analyst take to confirm the file was modified?
Select an answer first
13application · medium
A consortium of banks wants to create a shared, tamper-evident ledger of interbank transactions. They require that once a transaction is recorded, it cannot be altered without detection. Which technology is best suited for this requirement?
Select an answer first
14foundation · easy
Which application is a common use of blockchain technology?
Select an answer first
15application · medium
A financial firm is required to store customer transaction data at rest. They must ensure that if a storage drive is stolen, the data remains unreadable. Additionally, they need to detect any unauthorized modification to the stored data. Which approach best satisfies both requirements?
Select an answer first

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