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Question 370
A newly connected corporate laptop uses EAP and must authenticate before receiving normal wired service. Which admission mechanism fits?
- MAC authentication exception handling
- 802.1X supplicant authentication
- Role-based downloadable policy
- Server reachability and fail-mode planning
Explanation
Correct Answer
B:802.1X supports supplicant-based port authentication. An EAP-capable endpoint authenticates through the switch and backend RADIUS service.
Incorrect Answers
A:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to verify wired endpoint credentials before access.
C:Authenticated identity can receive an approved role and associated enforcement policy on supported platforms. But this does not address the case requirement to verify wired endpoint credentials before access.
D:Authentication depends on usable RADIUS reachability and supported critical or fallback behavior. But this does not address the case requirement to verify wired endpoint credentials before access.
Question 371
A user successfully authenticates but lands in the guest role instead of engineering. What response should be checked?
- 802.1X supplicant authentication
- MAC authentication exception handling
- Server reachability and fail-mode planning
- RADIUS policy response inspection
Explanation
Correct Answer
D:RADIUS attributes and role mapping determine policy result. RADIUS attributes can influence assigned VLAN, role or other supported access treatment.
Incorrect Answers
A:An EAP-capable endpoint authenticates through the switch and backend RADIUS service. But this does not address the case requirement to identify why the wrong role was assigned.
B:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to identify why the wrong role was assigned.
C:Authentication depends on usable RADIUS reachability and supported critical or fallback behavior. But this does not address the case requirement to identify why the wrong role was assigned.
Question 372
An industrial PLC cannot run a supplicant but needs restricted network access. Which exception may be used?
- Access session operational verification
- Server reachability and fail-mode planning
- 802.1X supplicant authentication
- MAC authentication exception handling
Explanation
Correct Answer
D:Carefully controlled MAC authentication can onboard some legacy endpoints. Devices without 802.1X may use a constrained alternative with known weaker identity assurance.
Incorrect Answers
A:Port-access session state reveals authenticated, rejected and policy-applied devices. But this does not address the case requirement to admit a non-802.1X device with compensating controls.
B:Authentication depends on usable RADIUS reachability and supported critical or fallback behavior. But this does not address the case requirement to admit a non-802.1X device with compensating controls.
C:An EAP-capable endpoint authenticates through the switch and backend RADIUS service. But this does not address the case requirement to admit a non-802.1X device with compensating controls.
Question 373
A switch denies all new wired clients when its only RADIUS server is unreachable. What dependency requires design attention?
- Access session operational verification
- RADIUS policy response inspection
- Server reachability and fail-mode planning
- MAC authentication exception handling
Explanation
Correct Answer
C:RADIUS redundancy and supported failure mode affect access continuity. Authentication depends on usable RADIUS reachability and supported critical or fallback behavior.
Incorrect Answers
A:Port-access session state reveals authenticated, rejected and policy-applied devices. But this does not address the case requirement to handle authentication-server outages safely.
B:RADIUS attributes can influence assigned VLAN, role or other supported access treatment. But this does not address the case requirement to handle authentication-server outages safely.
D:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to handle authentication-server outages safely.
Question 374
The same employee moves between floors and should retain an engineering policy rather than a port-specific VLAN. Which design is relevant?
- RADIUS policy response inspection
- Role-based downloadable policy
- MAC authentication exception handling
- Access session operational verification
Explanation
Correct Answer
B:Downloadable roles can attach authorized policy to user identity. Authenticated identity can receive an approved role and associated enforcement policy on supported platforms.
Incorrect Answers
A:RADIUS attributes can influence assigned VLAN, role or other supported access treatment. But this does not address the case requirement to apply location-independent role permissions.
C:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to apply location-independent role permissions.
D:Port-access session state reveals authenticated, rejected and policy-applied devices. But this does not address the case requirement to apply location-independent role permissions.
Question 375
An operator cannot tell why a client receives an unauthenticated policy despite EAP exchanges. What evidence should be collected?
- Role-based downloadable policy
- Access session operational verification
- MAC authentication exception handling
- 802.1X supplicant authentication
Explanation
Correct Answer
B:Port-access session and authentication status reveal admission results. Port-access session state reveals authenticated, rejected and policy-applied devices.
Incorrect Answers
A:Authenticated identity can receive an approved role and associated enforcement policy on supported platforms. But this does not address the case requirement to inspect active client authentication and policy state.
C:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to inspect active client authentication and policy state.
D:An EAP-capable endpoint authenticates through the switch and backend RADIUS service. But this does not address the case requirement to inspect active client authentication and policy state.
Question 376
A ClearPass rule returns the wrong enforcement role for a known user. Which control-plane message should be investigated?
- 802.1X supplicant authentication
- Role-based downloadable policy
- RADIUS policy response inspection
- MAC authentication exception handling
Explanation
Correct Answer
C:RADIUS decision and returned role attributes govern access. RADIUS attributes can influence assigned VLAN, role or other supported access treatment.
Incorrect Answers
A:An EAP-capable endpoint authenticates through the switch and backend RADIUS service. But this does not address the case requirement to trace the actual role assignment received.
B:Authenticated identity can receive an approved role and associated enforcement policy on supported platforms. But this does not address the case requirement to trace the actual role assignment received.
D:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to trace the actual role assignment received.
Question 377
After a WAN failure, new clients are blocked while established users continue. What should be reviewed?
- Server reachability and fail-mode planning
- Role-based downloadable policy
- MAC authentication exception handling
- RADIUS policy response inspection
Explanation
Correct Answer
A:Backend RADIUS reachability and critical-policy behavior affect new sessions. Authentication depends on usable RADIUS reachability and supported critical or fallback behavior.
Incorrect Answers
B:Authenticated identity can receive an approved role and associated enforcement policy on supported platforms. But this does not address the case requirement to design authentication resilience across WAN faults.
C:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to design authentication resilience across WAN faults.
D:RADIUS attributes can influence assigned VLAN, role or other supported access treatment. But this does not address the case requirement to design authentication resilience across WAN faults.
Question 378
A laptop sends EAPOL but never gets an authenticated session. What admission process should be diagnosed?
- Access session operational verification
- 802.1X supplicant authentication
- MAC authentication exception handling
- Role-based downloadable policy
Explanation
Correct Answer
B:802.1X handshake and RADIUS authorization form the access path. An EAP-capable endpoint authenticates through the switch and backend RADIUS service.
Incorrect Answers
A:Port-access session state reveals authenticated, rejected and policy-applied devices. But this does not address the case requirement to restore a successful endpoint authentication exchange.
C:Devices without 802.1X may use a constrained alternative with known weaker identity assurance. But this does not address the case requirement to restore a successful endpoint authentication exchange.
D:Authenticated identity can receive an approved role and associated enforcement policy on supported platforms. But this does not address the case requirement to restore a successful endpoint authentication exchange.
Question 379
A guest plugs a rogue DHCP server into an access port and responds to clients faster than the official server. What defense helps?
- DHCP snooping trusted uplinks
- First-hop security troubleshooting
- Dynamic ARP Inspection validation
- Protected edge port behavior
Explanation
Correct Answer
A:DHCP snooping rejects unauthorized server messages on untrusted ports. Only approved server-facing paths should be trusted to forward DHCP server responses.
Incorrect Answers
B:Inspect trust status, bindings and drops before disabling the whole protection service. But this does not address the case requirement to stop rogue DHCP replies from edge devices.
C:ARP inspection can check ARP claims against approved bindings on supported platforms. But this does not address the case requirement to stop rogue DHCP replies from edge devices.
D:Security should primarily treat endpoint-facing ports as untrusted ingress where appropriate. But this does not address the case requirement to stop rogue DHCP replies from edge devices.
Question 380
After valid DHCP assignments, the switch records client IP-to-MAC associations on each access port. What database is being built?
- First-hop security troubleshooting
- DHCP snooping binding learning
- Protected edge port behavior
- IP source guard enforcement
Explanation
Correct Answer
B:Snooping bindings link issued addresses to endpoints. The switch can learn authorized IP/MAC/VLAN/port associations from valid DHCP exchanges.
Incorrect Answers
A:Inspect trust status, bindings and drops before disabling the whole protection service. But this does not address the case requirement to track legitimate client address leases.
C:Security should primarily treat endpoint-facing ports as untrusted ingress where appropriate. But this does not address the case requirement to track legitimate client address leases.
D:Source guard can restrict spoofed client IP use based on trusted binding information. But this does not address the case requirement to track legitimate client address leases.
HPE Network Switching Professional (HPE7-A08) Practice Tests