Quick Answer
The answer is WPA2-Enterprise, as it is the only wireless security standard that natively supports both AES-CCMP encryption and 802.1X authentication with EAP-TLS. WPA2-Enterprise mandates CCMP, which is based on AES, for data confidentiality and integrity, while its use of 802.1X with a RADIUS server enables per-user authentication via EAP-TLS, fulfilling the policy requirement for certificate-based client authentication. On the CompTIA SecurityX CAS-004 exam, this question tests your ability to distinguish between WPA2-Personal and WPA2-Enterprise, as well as between WPA2 and WPA3—a common trap is assuming WPA3 is required, but WPA3-Enterprise uses GCMP-256, not AES-CCMP. Remember the key pairing: WPA2-Enterprise equals 802.1X plus AES-CCMP, while WPA2-Personal uses a pre-shared key. A useful memory tip is to think of “Enterprise” as requiring a central authentication server (RADIUS) and “AES-CCMP” as the gold standard for WPA2 encryption.
This CAS-004 practice question tests your understanding of security architecture. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization is deploying a new wireless network for employees and guests. The security policy requires that all wireless traffic be encrypted using AES-CCMP, and that clients must authenticate using 802.1X with EAP-TLS. Which of the following wireless security standards should be implemented?
WPA2-Personal
Why wrong: WPA2-Personal uses PSK, not 802.1X.
WEP
Why wrong: WEP is insecure and does not support AES or 802.1X.
WPA3-Enterprise
Why wrong: WPA3-Enterprise uses GCMP-256, not AES-CCMP.
WPA2-Enterprise
WPA2-Enterprise with AES-CCMP and 802.1X meets all requirements.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
WPA2-Enterprise
WPA2-Enterprise (D) is the correct choice because it supports AES-CCMP encryption and 802.1X authentication with EAP-TLS. WPA2-Enterprise uses a RADIUS server for centralized authentication, allowing per-user credentials via EAP methods, and mandates CCMP (AES-based) for data confidentiality and integrity, meeting all stated security policy requirements.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Common exam traps
The trap here is that candidates often confuse WPA3-Enterprise with WPA2-Enterprise, assuming newer is always better, but the question explicitly requires AES-CCMP and 802.1X with EAP-TLS, which are core to WPA2-Enterprise, while WPA3-Enterprise introduces optional stronger ciphers (GCMP-256) and a different handshake (SAE), making it not the direct match for the given requirements.
Detailed technical explanation
AES-CCMP is defined in IEEE 802.11i and uses a 128-bit key with CCM mode (Counter with CBC-MAC) for both encryption and integrity. 802.1X with EAP-TLS requires a RADIUS server and digital certificates on both client and server, providing mutual authentication and dynamic per-session keys. In practice, WPA2-Enterprise can be configured with EAP-TLS by deploying a PKI and configuring the RADIUS server (e.g., FreeRADIUS or Microsoft NPS) to validate client certificates, ensuring that only authorized devices with valid certificates can connect.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
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FAQ
Security Architecture — This question tests Security Architecture — Read the scenario before looking for a memorised answer..
The correct answer is: WPA2-Enterprise — WPA2-Enterprise (D) is the correct choice because it supports AES-CCMP encryption and 802.1X authentication with EAP-TLS. WPA2-Enterprise uses a RADIUS server for centralized authentication, allowing per-user credentials via EAP methods, and mandates CCMP (AES-based) for data confidentiality and integrity, meeting all stated security policy requirements.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This CAS-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CAS-004 exam.
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