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CompTIA Security+ SY0-701 Practice Question

An organization needs to encrypt a large amount of data efficiently for storage on their servers. Which encryption method would be most appropriate for this task?

Quantum encryption
Hashing algorithms
Encryption using public and private keys
Encryption using a shared secret key

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Answer Description

Encryption using a shared secret key is the most suitable method for encrypting large amounts of data efficiently. This refers to symmetric encryption, where the same key is used for both encryption and decryption processes. Symmetric encryption algorithms are faster and require less computational power than asymmetric encryption, making them ideal for bulk data encryption.

Encryption using public and private keys involves asymmetric encryption, which is slower due to complex mathematical operations and is better suited for securing small amounts of data or exchanging keys securely. Hashing algorithms are used for data integrity verification, not for encrypting data, as they generate a fixed-size hash that cannot be reversed. Quantum encryption is an emerging technology that is not yet practical for standard organizational use and would not be the efficient choice for encrypting large amounts of data in this scenario.

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CompTIA Security+ SY0-701

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