Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A security architect is designing the wireless network for a new branch office. The branch will have two types of users: employees who need access to internal corporate resources, and guests who need internet-only access. The architect plans to use WPA3-Enterprise for the employee SSID and WPA3-SAE for the guest SSID. Which of the following additional configurations is MOST critical to prevent guests from accessing internal corporate resources?
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
Distractor review
Implement MAC address filtering on the guest SSID to allow only authorized guest devices.
MAC address filtering can be easily bypassed by an attacker who discovers an allowed MAC address, and it does not provide any Layer 3 isolation between the guest and corporate networks.
B
Best answer
Place the guest wireless network on a separate VLAN with a firewall rule blocking inbound traffic to the corporate VLAN.
This is the most critical configuration because it enforces network segmentation at Layer 3. The guest VLAN is isolated from the corporate VLAN by the firewall, preventing any direct access to internal resources.
C
Distractor review
Disable SSID broadcast for the guest network to make it less discoverable.
Disabling SSID broadcast is a weak security measure that only hides the network name from basic scans. It does not prevent attackers from discovering the network using more advanced tools, and it provides no isolation from the corporate network.
D
Distractor review
Require guests to accept a captive portal agreement before gaining internet access.
A captive portal only enforces policy acceptance or authentication; it does not create network-level separation. Without VLAN segmentation, a guest device could still potentially access internal resources if routing is not restricted.
Common exam trap
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Technical deep dive
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
- Access ports place end devices into a single VLAN.
- Trunk ports carry multiple VLANs between switches.
- Allowed VLAN lists decide which VLANs can cross a trunk.
- Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
- Use show vlan brief to verify access VLANs.
- Use show interfaces trunk to verify trunk state and allowed VLANs.
- Do not treat every same-VLAN issue as a routing problem.
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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?
Access ports place end devices into a single VLAN.
What is the correct answer to this question?
The correct answer is: Place the guest wireless network on a separate VLAN with a firewall rule blocking inbound traffic to the corporate VLAN. — The fundamental security principle for isolating guest traffic from corporate resources is network segmentation. Placing the guest wireless network on a separate VLAN and implementing a firewall rule that blocks inbound traffic from the guest VLAN to the corporate VLAN ensures that even if a guest device is compromised, it cannot directly communicate with internal systems. MAC address filtering (A) can be easily bypassed and does not provide Layer 3 isolation. Disabling SSID broadcast (C) is a form of security through obscurity and does not prevent determined attackers from discovering the network. A captive portal (D) provides authentication and policy acceptance but does not enforce network-level isolation; a guest could still potentially access internal resources if Layer 3 routing is not restricted.
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.
Discussion
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