Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
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
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
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
Distractor review
ACLs
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
Distractor review
DMZ
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
Distractor review
VPN
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 trap
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Technical deep dive
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
- OSPF neighbours must agree on key parameters.
- Router ID selection can affect neighbour relationships and LSDB output.
- OSPF cost influences the preferred path.
- A route can appear in OSPF information but not become the installed route.
TExam Day Tips
- Check area mismatch first when OSPF adjacency fails.
- Review passive interfaces when a network is advertised but no neighbour forms.
- Use show ip ospf neighbor and show ip route clues carefully.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A laptop is suspected of being used in a malware incident. It is still powered on and connected to Wi-Fi. What should the responder do before shutting it down?
Question 2
An employee reports a ransomware note on a file server. The server is still powered on, shares are still being accessed, and management wants service restored as quickly as possible. What should the incident response team do first?
Question 3
An employee reports a ransomware note on a finance laptop. The laptop is still powered on, connected to Wi-Fi, and the user says they were just working in a spreadsheet. Management wants the fastest safe response that also preserves evidence. What should the responder do first?
Question 4
You are handed a company laptop suspected in an insider theft case. Legal says the evidence may be needed in court. Which action best preserves admissibility?
Question 5
A developer wants to reduce the risk of SQL injection in a new customer search form. Which two changes are the best mitigations? Select two.
Question 6
A branch office uses a flat LAN, and a compromise on one user workstation could spread quickly to finance systems. Management wants finance workstations isolated from general users, but finance staff still need access to a central finance application and network printer. What is the best design change?
FAQ
Questions learners often ask
What does this SY0-701 question test?
OSPF neighbours must agree on key parameters.
What is the correct answer to this question?
The correct answer is: VLANs — VLANs (Virtual Local Area Networks) are the correct technology for Layer 2 segmentation. They allow a single physical switch to be logically divided into multiple isolated broadcast domains, effectively separating traffic between the guest wireless network and the internal corporate network without requiring separate physical switches. ACLs operate primarily at Layer 3/4 and are used for filtering traffic based on IP addresses and ports, not for fundamental Layer 2 separation. A DMZ is a specific network segment design for public-facing services, not the technology to enforce segmentation. VPNs provide encrypted tunnels over untrusted networks and do not directly enforce Layer 2 isolation within a local network.
What should I do if I get this SY0-701 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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