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Question 10
A floor switch must apply network access control at its edge ports before allowing users onto internal VLANs. What should the team inspect to confirm the result?
- Check the supplicant and authenticator exchange and the returned authorization result
- Check interface link, optical alarms, received power and port error counters
- Compare tagged VLAN IDs and learned MAC address tables from source to destination
- Review client capabilities, channel utilization and measured user throughput during a dense test
Explanation
Correct Answer
A:Authentication success and applied network role must both be visible. Port access can depend on authenticated identity rather than physical cabling.
Incorrect Answers
B:Physical optical telemetry distinguishes an unsupported transceiver from a routing issue. It would not resolve the documented symptom; authentication success and applied network role must both be visible.
C:A consistent tag path explains where Layer 2 isolation succeeds or fails. In this situation, authentication success and applied network role must both be visible.
D:A advertised radio rate does not prove application-level benefit. By contrast, authentication success and applied network role must both be visible.
Question 11
A floor switch must apply network access control at its edge ports before allowing users onto internal VLANs. Which misconception is most likely to obstruct a correct fix?
- Assume any pair of SFP modules negotiates through different fiber wavelengths automatically
- Assume every legacy Wi-Fi station gains all 802.11ax features without compatible radios
- Assume an 802.11 channel change fixes CRC errors on a copper switch port
- Treat IEEE 802.3 Ethernet framing as a replacement for user authentication
Explanation
Correct Answer
D:Ethernet framing does not establish a user's identity or permission. Port access can depend on authenticated identity rather than physical cabling.
Incorrect Answers
A:Optical wavelength and form-factor compatibility cannot be inferred from a common connector. By contrast, ethernet framing does not establish a user's identity or permission.
B:Wireless efficiency features require supported clients and an appropriate RF design. The relevant technical distinction is that ethernet framing does not establish a user's identity or permission.
C:Wireless channel selection cannot repair an Ethernet physical-layer negotiation problem. It would not resolve the documented symptom; ethernet framing does not establish a user's identity or permission.
Question 12
A floor switch must apply network access control at its edge ports before allowing users onto internal VLANs. What precaution is most important before the change is expanded?
- Pilot with a realistic mix of old and new client adapters
- Retest the port with a known-good cable and capture its counters before replacing hardware
- Maintain an approved fallback for devices without a supplicant and test unauthorized access
- Survey the environment at peak occupancy before assigning channels
Explanation
Correct Answer
C:Exceptions should not become a universal bypass of port authentication. Authentication success and applied network role must both be visible.
Incorrect Answers
A:Heterogeneous clients may react differently to channel and feature changes. Here, however, exceptions should not become a universal bypass of port authentication.
B:A controlled cable check separates a bad medium from incompatible interface settings. By contrast, exceptions should not become a universal bypass of port authentication.
D:A quiet-hour survey can miss daytime co-channel interference. The relevant technical distinction is that exceptions should not become a universal bypass of port authentication.
Question 13
An access team discovers that a voice phone and a workstation must share a single physical edge port. Which configuration decision most directly resolves the situation?
- Use the appropriate IEEE 802.1X authentication exchange with an authorized RADIUS back end
- Plan channel selection and contention using 802.11 wireless medium behavior
- Use a documented voice-VLAN and data-VLAN arrangement supported by the access switch
- Document the WLAN association process and the wired VLAN transport as separate forwarding stages
Explanation
Correct Answer
C:Tagged voice traffic can be separated from ordinary client data on the same port. Both endpoint classes must receive the correct L2 membership.
Incorrect Answers
A:Port access can depend on authenticated identity rather than physical cabling. In this situation, tagged voice traffic can be separated from ordinary client data on the same port.
B:Wi-Fi stations share airtime, so overlapping transmitters affect performance even with different SSIDs. The relevant technical distinction is that tagged voice traffic can be separated from ordinary client data on the same port.
D:The radio connection and uplink tagging have different failure modes. Here, however, tagged voice traffic can be separated from ordinary client data on the same port.
Question 14
An access team discovers that a voice phone and a workstation must share a single physical edge port. Which TWO actions together implement the required change and verify that it works? Choose TWO.
- Verify the phone advertises and uses the intended voice VLAN while the workstation stays in data VLAN
- Evaluate OFDMA scheduling and airtime availability rather than only the nominal PHY rate
- Test the whole client path from authentication through DHCP and application access
- Use a documented voice-VLAN and data-VLAN arrangement supported by the access switch
- Use the appropriate IEEE 802.1X authentication exchange with an authorized RADIUS back end
Explanation
Correct Answers
A:Both endpoint classes must receive the correct L2 membership. Tagged voice traffic can be separated from ordinary client data on the same port.
D:Tagged voice traffic can be separated from ordinary client data on the same port. Both endpoint classes must receive the correct L2 membership.
Incorrect Answers
B:Efficient resource-unit use helps dense client groups but still depends on RF conditions. Here, however, tagged voice traffic can be separated from ordinary client data on the same port.
C:End-to-end testing catches gaps between wireless and wired domains. In this situation, voice tagging should not allow unintended access to a more trusted segment.
E:Port access can depend on authenticated identity rather than physical cabling. It would not resolve the documented symptom; tagged voice traffic can be separated from ordinary client data on the same port.
Question 15
An access team discovers that a voice phone and a workstation must share a single physical edge port. Which assumption would be most misleading when investigating this situation?
- Assume LLDP discovery alone creates the required VLAN forwarding configuration
- Assume any pair of SFP modules negotiates through different fiber wavelengths automatically
- Assume a lit Ethernet link confirms sufficient PoE power under all radio loads
- Treat IEEE 802.3 Ethernet framing as a replacement for user authentication
Explanation
Correct Answer
A:Neighbor discovery advertises capabilities but does not replace switch VLAN membership. Tagged voice traffic can be separated from ordinary client data on the same port.
Incorrect Answers
B:Optical wavelength and form-factor compatibility cannot be inferred from a common connector. It would not resolve the documented symptom; neighbor discovery advertises capabilities but does not replace switch VLAN membership.
C:Link negotiation does not guarantee continuous power at peak consumption. In this situation, neighbor discovery advertises capabilities but does not replace switch VLAN membership.
D:Ethernet framing does not establish a user's identity or permission. By contrast, neighbor discovery advertises capabilities but does not replace switch VLAN membership.
Question 16
An access team discovers that a voice phone and a workstation must share a single physical edge port. Which safeguard best reduces the deployment risk in this case?
- Reserve PoE headroom and prioritize critical APs in the switch budget
- Check the resulting trust boundary so an untrusted laptop cannot freely join the voice VLAN
- Restrict trunk allowed VLAN lists to approved segments and record exceptions
- Confirm approved modules and test the fiber path before the change window
Explanation
Correct Answer
B:Voice tagging should not allow unintended access to a more trusted segment. Both endpoint classes must receive the correct L2 membership.
Incorrect Answers
A:A fully consumed PoE supply can disrupt multiple nearby devices. By contrast, voice tagging should not allow unintended access to a more trusted segment.
C:Broad default trunking can expose segments beyond their intended area. The relevant technical distinction is that voice tagging should not allow unintended access to a more trusted segment.
D:Replacement optics should be ready before an unsupported pairing strands the uplink. It would not resolve the documented symptom; voice tagging should not allow unintended access to a more trusted segment.
Question 17
A new 802.11ax access point is expected to improve throughput where many clients transmit small frames. What is the most appropriate first technical change?
- Plan channel selection and contention using 802.11 wireless medium behavior
- Use a documented voice-VLAN and data-VLAN arrangement supported by the access switch
- Evaluate OFDMA scheduling and airtime availability rather than only the nominal PHY rate
- Confirm 802.1Q VLAN tagging and access/trunk membership at every relevant switch hop
Explanation
Correct Answer
C:Efficient resource-unit use helps dense client groups but still depends on RF conditions. A advertised radio rate does not prove application-level benefit.
Incorrect Answers
A:Wi-Fi stations share airtime, so overlapping transmitters affect performance even with different SSIDs. By contrast, efficient resource-unit use helps dense client groups but still depends on RF conditions.
B:Tagged voice traffic can be separated from ordinary client data on the same port. The relevant technical distinction is that efficient resource-unit use helps dense client groups but still depends on RF conditions.
D:The VLAN boundary must be maintained on all links carrying the traffic. Here, however, efficient resource-unit use helps dense client groups but still depends on RF conditions.
Question 18
A new 802.11ax access point is expected to improve throughput where many clients transmit small frames. Which observation would best verify that the intended behavior is working?
- Review client capabilities, channel utilization and measured user throughput during a dense test
- Correlate PoE draw, switch budget alarms and AP reboot times
- Compare negotiated port speed, duplex, error counters and the workstation NIC state
- Check interface link, optical alarms, received power and port error counters
Explanation
Correct Answer
A:A advertised radio rate does not prove application-level benefit. Efficient resource-unit use helps dense client groups but still depends on RF conditions.
Incorrect Answers
B:Power telemetry ties device resets to the source supply. Here, however, a advertised radio rate does not prove application-level benefit.
C:The counters show whether the physical Ethernet mismatch is resolved. The relevant technical distinction is that a advertised radio rate does not prove application-level benefit.
D:Physical optical telemetry distinguishes an unsupported transceiver from a routing issue. In this situation, a advertised radio rate does not prove application-level benefit.
Question 19
A new 802.11ax access point is expected to improve throughput where many clients transmit small frames. Which belief about the configuration should the team reject?
- Treat IEEE 802.3 Ethernet framing as a replacement for user authentication
- Assume an 802.11 channel change fixes CRC errors on a copper switch port
- Assume every legacy Wi-Fi station gains all 802.11ax features without compatible radios
- Treat a successful wireless association as proof the wired VLAN has an uplink route
Explanation
Correct Answer
C:Wireless efficiency features require supported clients and an appropriate RF design. Efficient resource-unit use helps dense client groups but still depends on RF conditions.
Incorrect Answers
A:Ethernet framing does not establish a user's identity or permission. It would not resolve the documented symptom; wireless efficiency features require supported clients and an appropriate RF design.
B:Wireless channel selection cannot repair an Ethernet physical-layer negotiation problem. In this situation, wireless efficiency features require supported clients and an appropriate RF design.
D:Association does not demonstrate a working downstream Ethernet path. Here, however, wireless efficiency features require supported clients and an appropriate RF design.
Question 20
A new 802.11ax access point is expected to improve throughput where many clients transmit small frames. What should be included in the rollout plan to limit a foreseeable failure?
- Restrict trunk allowed VLAN lists to approved segments and record exceptions
- Pilot with a realistic mix of old and new client adapters
- Retest the port with a known-good cable and capture its counters before replacing hardware
- Reserve PoE headroom and prioritize critical APs in the switch budget
Explanation
Correct Answer
B:Heterogeneous clients may react differently to channel and feature changes. A advertised radio rate does not prove application-level benefit.
Incorrect Answers
A:Broad default trunking can expose segments beyond their intended area. It would not resolve the documented symptom; heterogeneous clients may react differently to channel and feature changes.
C:A controlled cable check separates a bad medium from incompatible interface settings. In this situation, heterogeneous clients may react differently to channel and feature changes.
D:A fully consumed PoE supply can disrupt multiple nearby devices. By contrast, heterogeneous clients may react differently to channel and feature changes.
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