N10-005 Question #933: Real Exam Question with Answer & Explanation

The correct answer is B: Digital signatures. Digital signatures provide data integrity and authenticity. The sender hashes the message and encrypts that hash with their private key to produce the signature. The recipient decrypts it with the sender's public key and recomputes the hash - if they match, the data was not alter

Question

A user wants to send information and ensure that it was not modified during transmission. Which of the following should be implemented?

Options

AMAC filtering
BDigital signatures
CMS-CHAP
DCHAP

Explanation

Digital signatures provide data integrity and authenticity. The sender hashes the message and encrypts that hash with their private key to produce the signature. The recipient decrypts it with the sender's public key and recomputes the hash - if they match, the data was not altered in transit. Any modification to the message invalidates the signature. MAC filtering restricts network access by MAC address and has nothing to do with data integrity. CHAP and MS-CHAP are authentication protocols (used to verify identity during login) and do not protect message content from modification.

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