- A
VLANs
Correct. VLANs create separate broadcast domains at Layer 2, effectively isolating traffic between the guest and corporate networks on the same switch infrastructure.
- B
ACLs
Why wrong: Incorrect. ACLs filter traffic based on Layer 3/4 criteria (IP addresses, ports) but do not provide the fundamental Layer 2 separation required; they can complement VLANs but are not the primary technology for segmentation.
- C
DMZ
Why wrong: Incorrect. A DMZ is a network architecture for hosting public-facing services with restricted access; it is not a technology for enforcing Layer 2 isolation between internal networks.
- D
VPN
Why wrong: Incorrect. VPNs establish encrypted tunnels for remote access or site-to-site connectivity over untrusted networks; they do not provide Layer 2 segmentation within a local network.
SY0-701 Security Architecture Practice Question
This SY0-701 practice question tests your understanding of security architecture. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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 is implementing network segmentation to isolate the guest wireless network from the internal corporate network. Which of the following technologies is most appropriate to enforce this separation at Layer 2?
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
VLANs
VLANs (Virtual Local Area Networks) are the correct technology because they operate at Layer 2 (Data Link layer) of the OSI model, allowing network administrators to logically segment a physical switch into multiple isolated broadcast domains. By assigning the guest wireless network to a separate VLAN (e.g., VLAN 100) and the internal corporate network to another (e.g., VLAN 10), traffic between them is blocked at Layer 2 unless explicitly routed through a Layer 3 device with appropriate firewall rules. This directly enforces separation without requiring additional hardware, making VLANs the most appropriate and efficient choice for isolating guest traffic at Layer 2.
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.
- ✓
VLANs
Why this is correct
Correct. VLANs create separate broadcast domains at Layer 2, effectively isolating traffic between the guest and corporate networks on the same switch infrastructure.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
ACLs
Why it's wrong here
Incorrect. ACLs filter traffic based on Layer 3/4 criteria (IP addresses, ports) but do not provide the fundamental Layer 2 separation required; they can complement VLANs but are not the primary technology for segmentation.
- ✗
DMZ
Why it's wrong here
Incorrect. A DMZ is a network architecture for hosting public-facing services with restricted access; it is not a technology for enforcing Layer 2 isolation between internal networks.
- ✗
VPN
Why it's wrong here
Incorrect. VPNs establish encrypted tunnels for remote access or site-to-site connectivity over untrusted networks; they do not provide Layer 2 segmentation within a local network.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse ACLs as a Layer 2 solution because they are commonly used for filtering, but ACLs operate at Layer 3/4 and cannot create broadcast domain isolation; VLANs are the only Layer 2 mechanism listed that directly segments traffic at the Data Link layer.
Detailed technical explanation
How to think about this question
VLANs use IEEE 802.1Q trunking to tag Ethernet frames with a VLAN ID (12-bit field, allowing up to 4094 VLANs), enabling multiple VLANs to traverse a single physical link while maintaining isolation. In a real-world scenario, a guest wireless VLAN might be configured with a separate subnet and DHCP scope, and inter-VLAN routing is disabled by default; a Layer 3 switch or router with a firewall rule set (e.g., 'deny ip from guest subnet to internal subnet') is required to enforce access control, but the Layer 2 separation itself is achieved solely by VLAN membership. A subtle behavior: without a router-on-a-stick or Layer 3 switch, devices in different VLANs cannot communicate at all, even if they share the same physical switch.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Security Architecture — study guide chapter
Learn the concepts, then practise the questions
- →
Security Architecture practice questions
Targeted practice on this topic area only
- →
All SY0-701 questions
1,152 questions across all exam domains
- →
Security+ SY0-701 study guide
Full concept coverage aligned to exam objectives
- →
SY0-701 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SY0-701 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
General Security Concepts practice questions
Practise SY0-701 questions linked to General Security Concepts.
Threats, Vulnerabilities, and Mitigations practice questions
Practise SY0-701 questions linked to Threats, Vulnerabilities, and Mitigations.
Security Architecture practice questions
Practise SY0-701 questions linked to Security Architecture.
Security Operations practice questions
Practise SY0-701 questions linked to Security Operations.
Security Program Management and Oversight practice questions
Practise SY0-701 questions linked to Security Program Management and Oversight.
Security+ social engineering questions
Practise SY0-701 questions linked to Security+ social engineering questions.
Security+ cryptography practice questions
Practise SY0-701 questions linked to Security+ cryptography.
Security+ IAM questions
Practise SY0-701 questions linked to Security+ IAM questions.
Security+ risk management questions
Practise SY0-701 questions linked to Security+ risk management questions.
Security+ incident response questions
Practise SY0-701 questions linked to Security+ incident response questions.
Security+ malware questions
Practise SY0-701 questions linked to Security+ malware questions.
Security+ vulnerability management questions
Practise SY0-701 questions linked to Security+ vulnerability management questions.
Practice this exam
Start a free SY0-701 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this SY0-701 question test?
Security Architecture — This question tests Security Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: VLANs — VLANs (Virtual Local Area Networks) are the correct technology because they operate at Layer 2 (Data Link layer) of the OSI model, allowing network administrators to logically segment a physical switch into multiple isolated broadcast domains. By assigning the guest wireless network to a separate VLAN (e.g., VLAN 100) and the internal corporate network to another (e.g., VLAN 10), traffic between them is blocked at Layer 2 unless explicitly routed through a Layer 3 device with appropriate firewall rules. This directly enforces separation without requiring additional hardware, making VLANs the most appropriate and efficient choice for isolating guest traffic at Layer 2.
What should I do if I get this SY0-701 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More SY0-701 practice questions
- An HR analyst must send a salary file to an external auditor. The auditor only needs names, departments, and salary tota…
- An investigator receives a suspect laptop drive that may be used in court. Which approach best supports a forensically s…
- An investigator must collect data from a suspected insider-threat laptop so the evidence could be used in an HR and lega…
- An NDR tool shows a production web server sending small, periodic DNS queries to random-looking subdomains under a domai…
- An investigator needs to make a forensic image of a suspect laptop without changing the original drive contents. Which t…
- An operations team manages Linux servers over SSH. The security team wants to stop direct management access from employe…
Last reviewed: Jun 11, 2026
This SY0-701 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 SY0-701 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.