200-301 Question #935: Real Exam Question with Answer & Explanation

Question

How does encryption project the wireless network?

Options

• Avia integrity checks to identify wireless forgery attacks in the frame
• Bvia specific ciphers to detect and prevent zero-day network attacks
• Cvia an algorithm to change wireless data so that only the access point and client understand it
• Dvia a policy to prevent unauthorized users from communicating on the wireless network

Explanation

Encryption protects a wireless network by using cryptographic algorithms to transform data into an unreadable format, ensuring only the intended recipient (access point or client) can comprehend it.

Common mistakes.

• A. Integrity checks are designed to detect if data has been altered or tampered with during transit, providing data integrity, which is distinct from encryption's primary role of confidentiality.
• B. While encryption uses ciphers, its main purpose is data confidentiality, not specifically the detection or prevention of zero-day network attacks, which often fall under intrusion detection/prevention systems.
• D. Encryption directly transforms data to protect confidentiality, whereas a policy defines rules for network access and communication, acting at a higher logical level.

Concept tested. Wireless encryption for confidentiality

Reference. https://www.cloudflare.com/learning/network-layer/what-is-encryption/

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