GSEC Wireless Network Security Practice Question
A security analyst at a financial firm is reviewing wireless traffic captured near the executive conference room. The capture shows a flood of 802.11 management frames with source addresses set to the company's legitimate AP MAC address, but the frames are not encrypted and are arriving at a high rate. Which type of attack is most likely occurring?
⚠ Common exam trap
It's easy for candidates to confuse a deauthentication flood with a KRACK attack or a rogue AP, because all can disrupt wireless connectivity, but only the flood uses spoofed management frames at a high rate.
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
✓
A deauthentication flood using spoofed management frames.
The flood of unencrypted 802.11 management frames with a spoofed AP MAC address is a classic deauthentication attack. Attackers use this to disconnect clients from the legitimate AP, often to capture the WPA handshake or to force clients to connect to a rogue AP. The high rate and spoofed source distinguish it from other wireless attacks that manipulate encrypted frames or handshake processes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A deauthentication flood using spoofed management frames.
Why this is correct
The flood of unencrypted 802.11 management frames with a spoofed AP MAC address is characteristic of a deauthentication attack. These frames are sent to disconnect clients from the legitimate AP, often as a precursor to an evil twin or capture of the WPA handshake. The high rate and spoofed source confirm this is not normal traffic.
- ✗
A rogue access point broadcasting a duplicate SSID to lure clients.
Why it's wrong here
A rogue AP broadcasting a duplicate SSID would appear as a separate BSSID and would not flood the network with management frames spoofed as the legitimate AP's MAC address. While an evil twin may be used in conjunction with a deauthentication attack, the flood itself is the deauthentication, not the rogue AP. The scenario specifically describes management frames with the legitimate AP's MAC, indicating spoofing.
- ✗
A KRACK key reinstallation attack against the WPA2 four-way handshake.
Why it's wrong here
KRACK exploits vulnerabilities in the WPA2 four-way handshake by manipulating retransmissions of message 3, not by flooding management frames. The scenario describes unencrypted management frames with a spoofed AP MAC, which does not match KRACK's manipulation of encrypted EAPOL key frames. KRACK would require a client to be within range and would not produce a flood of management frames.
- ✗
A WPA3 Dragonblood downgrade attack forcing the use of WPA2.
Why it's wrong here
Dragonblood vulnerabilities target WPA3's SAE handshake and can enable downgrade attacks, but they do not involve flooding management frames with a spoofed AP MAC. The observed high rate of unencrypted management frames is not consistent with a downgrade attack, which typically manipulates the handshake process rather than broadcasting deauthentication frames.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official GIAC exam blueprint
This GSEC practice question is part of Courseiva's free GIAC 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 GSEC exam.