Question 145 of 750
Wireless Security ProtocolsmediumMultiple ChoiceObjective-mapped

WPA3-SAE vs WPA2-PSK AES: Choosing the Strongest Encryption

This 220-1202 practice question tests your understanding of wireless security protocols. 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.

A company's security policy requires all wireless traffic to be encrypted with AES. A technician is configuring a new access point and sees the following options: WPA2-PSK (TKIP), WPA2-PSK (AES), WPA3-SAE, and WEP. Which option should the technician select?

Quick Answer

The answer is WPA3-SAE because it is the only option that satisfies the company’s AES encryption requirement while offering the highest security standard. WPA3-SAE inherently uses AES-CCMP encryption and adds Simultaneous Authentication of Equals, which provides forward secrecy and robust protection against offline dictionary attacks—capabilities that WPA2-PSK (AES) lacks. On the CompTIA A+ Core 2 220-1202 exam, this question tests your ability to prioritize both encryption strength and protocol features; a common trap is choosing WPA2-PSK (AES) since it also uses AES, but the policy’s demand for the strongest security points to WPA3-SAE. Remember the memory tip: “WPA3 beats WPA2—SAE seals the deal.”

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

WPA3-SAE

C is correct because WPA3-SAE (Simultaneous Authentication of Equals) is the only option that uses AES encryption by default and meets the company's security policy requirement for AES encryption. WPA3-SAE replaces the pre-shared key (PSK) with a more secure handshake and mandates AES-CCMP or AES-GCMP, ensuring compliance with the policy.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • WPA2-PSK (TKIP)

    Why it's wrong here

    Incorrect. TKIP uses RC4, not AES, and is deprecated due to security vulnerabilities.

  • WPA2-PSK (AES)

    Why it's wrong here

    Incorrect. While this uses AES, WPA3-SAE is more secure and should be preferred when available.

  • WPA3-SAE

    Why this is correct

    Correct. WPA3-SAE uses AES encryption and provides stronger security than WPA2, making it the best choice.

    Related concept

    Read the scenario before looking for a memorised answer.

  • WEP

    Why it's wrong here

    Incorrect. WEP is insecure and does not use AES; it should never be used in a modern network.

Common exam traps

Common exam trap: answer the scenario, not the keyword

CompTIA A+ often tests the misconception that WPA2-PSK (AES) is the best choice because it uses AES, but the trap here is that the question asks which option the technician should select, and WPA3-SAE is the most secure and modern protocol that also meets the AES requirement, making it the correct answer over the older WPA2 variant.

Detailed technical explanation

How to think about this question

WPA3-SAE uses the Dragonfly handshake (based on Diffie-Hellman key exchange) to provide forward secrecy, meaning that even if the pre-shared key is compromised, past session keys remain secure. Under the hood, WPA3 mandates AES-CCMP (128-bit) or AES-GCMP (256-bit) for encryption, ensuring compliance with AES-only policies. In real-world scenarios, selecting WPA2-PSK (AES) might still pass a compliance check, but WPA3-SAE is the correct choice for future-proofing and stronger authentication.

KKey Concepts to Remember

  • Read the scenario before looking for a memorised answer.
  • Find the constraint that changes the correct option.
  • Eliminate answers that are true in general but not in this case.

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A practitioner preparing for the 220-1202 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

Quick reference

Symmetric Encryption Algorithm Comparison

AlgorithmKey SizeBlock SizeStatusNotes
AES-128128-bit128-bitCurrent standardNIST approved; WPA3, TLS
AES-256256-bit128-bitCurrent standardPreferred for sensitive / govt data
3DES112-bit effective64-bitDeprecated (2023)Replaced by AES
DES56-bit64-bitBrokenCracked in < 24 h; never deploy
ChaCha20256-bitStream cipherCurrentTLS 1.3, WireGuard

What to study next

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FAQ

Questions learners often ask

What does this 220-1202 question test?

Wireless Security Protocols — This question tests Wireless Security Protocols — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: WPA3-SAE — C is correct because WPA3-SAE (Simultaneous Authentication of Equals) is the only option that uses AES encryption by default and meets the company's security policy requirement for AES encryption. WPA3-SAE replaces the pre-shared key (PSK) with a more secure handshake and mandates AES-CCMP or AES-GCMP, ensuring compliance with the policy.

What should I do if I get this 220-1202 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Same concept, more angles

2 more ways this is tested on 220-1202

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. A company's IT policy requires that all wireless traffic be encrypted using the strongest available protocol. A technician is configuring a new access point that supports WPA3-SAE, WPA2-PSK with AES, and WPA2-PSK with TKIP. Which configuration meets the policy?

easy
  • A.WPA2-PSK with TKIP.
  • B.WPA2-PSK with AES.
  • C.WPA3-SAE.
  • D.A mixed mode of WPA2 and WPA3.

Why C: WPA3-SAE (Simultaneous Authentication of Equals) is the strongest available wireless encryption protocol among the options, as it replaces the pre-shared key (PSK) model with a more secure handshake that provides forward secrecy and is resistant to offline dictionary attacks. The IT policy requires the strongest available protocol, and WPA3-SAE is superior to both WPA2-PSK variants, making option C the correct choice.

Variation 2. A company's security policy mandates that all wireless traffic must be encrypted using a protocol that is resistant to KRACK attacks. The current network uses WPA2-PSK with AES. Which of the following upgrades should be implemented to meet this requirement?

hard
  • A.Change the encryption from AES to TKIP.
  • B.Enable WPA2-Enterprise with 802.1X.
  • C.Upgrade to WPA3-Personal.
  • D.Implement MAC address filtering.

Why C: WPA3-Personal replaces the Pre-Shared Key (PSK) handshake with Simultaneous Authentication of Equals (SAE), which is resistant to offline dictionary attacks and the KRACK vulnerability that exploits the 4-way handshake in WPA2. Since the policy requires encryption resistant to KRACK attacks, upgrading to WPA3-Personal directly addresses this requirement.

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Last reviewed: Jul 4, 2026

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This 220-1202 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 220-1202 exam.