The answer is MAC spoofing and VLAN hopping. MAC spoofing bypasses network access controls by allowing a tester to change their network interface’s MAC address to match a whitelisted device, effectively impersonating an authorized host and slipping past MAC-based ACLs or port security. VLAN hopping, specifically via 802.1Q trunking, exploits misconfigured switch ports to gain unauthorized access to traffic on other VLANs, often by sending double-tagged frames. On the CompTIA PenTest+ PT0-002 exam, these two methods test your understanding of Layer 2 attacks and common network segmentation weaknesses; a frequent trap is confusing VLAN hopping with ARP spoofing or assuming MAC filtering is secure. Remember the memory tip: “MAC mimics, VLAN jumps” — MAC spoofing mimics a trusted address, while VLAN hopping jumps across virtual boundaries.
PT0-002 Attacks and Exploits Practice Question
This PT0-002 practice question tests your understanding of attacks and exploits. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which TWO of the following are common methods used to bypass network access controls during a penetration test? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
MAC spoofing
MAC spoofing allows a tester to impersonate an authorized device by changing the MAC address of their network interface to match a whitelisted MAC, thereby bypassing MAC-based access control lists (ACLs) or port security. This is a common bypass because many network access controls rely on MAC addresses as a simple authentication factor, which can be trivially altered using tools like `macchanger` or `ifconfig`.
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.
✗
SSID broadcasting
Why it's wrong here
SSID broadcast is a wireless feature, not a bypass technique.
✓
MAC spoofing
Why this is correct
Spoofing a allowed MAC address can bypass MAC-based ACLs.
Related concept
Read the scenario before looking for a memorised answer.
✓
802.1Q trunking (VLAN hopping)
Why this is correct
Trunking can allow traffic to cross VLANs, bypassing VLAN-based segmentation.
Related concept
Read the scenario before looking for a memorised answer.
✗
ARP poisoning
Why it's wrong here
ARP poisoning is used for MITM, not for bypassing network access controls.
✗
SQL injection
Why it's wrong here
SQL injection targets databases, not network access.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the distinction between passive reconnaissance (like SSID broadcasting) and active bypass techniques, leading candidates to incorrectly select SSID broadcasting as a bypass method when it is merely a visibility setting.
Detailed technical explanation
How to think about this question
VLAN hopping via 802.1Q trunking exploits the default configuration of switch ports where an attacker can double-tag frames (802.1Q-in-Q) to send traffic to a VLAN that would otherwise be isolated. In a real-world scenario, if a switch port is set to 'trunk' mode or uses Dynamic Trunking Protocol (DTP) without restriction, an attacker can negotiate trunking and gain access to multiple VLANs, effectively bypassing VLAN-based segmentation.
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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PT0-002 question in full detail.
Attacks and Exploits — This question tests Attacks and Exploits — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: MAC spoofing — MAC spoofing allows a tester to impersonate an authorized device by changing the MAC address of their network interface to match a whitelisted MAC, thereby bypassing MAC-based access control lists (ACLs) or port security. This is a common bypass because many network access controls rely on MAC addresses as a simple authentication factor, which can be trivially altered using tools like `macchanger` or `ifconfig`.
What should I do if I get this PT0-002 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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Question Discussion
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