Question # 1
| Assume that an AOS-CX switch is already implementing DHCP snooping and ARP inspection successfully on several VLANs.
What should you do to help minimize disruption time if the switch reboots? | | A. Configure the switch to act as an ARP proxy. | | B. Create static IP-to-MAC bindings for the DHCP and DNS servers. | | C. Save the IP-to-MAC bindings to external storage. | | D. Configure the IP helper address on this switch, rather than a core routing switch. |
C. Save the IP-to-MAC bindings to external storage.
Explanation:
To minimize disruption time if an AOS-CX switch reboots while implementing DHCP snooping and ARP inspection, you should save the IP-to-MAC bindings to external storage. This ensures that the DHCP snooping and ARP inspection tables, which are crucial for preventing spoofing attacks, are preserved across reboots. When the switch restarts, it can reload these bindings from the external storage, thereby maintaining network security and reducing the downtime associated with rebuilding these tables.
1.Preserving Bindings: Saving IP-to-MAC bindings to external storage ensures that these critical security tables are not lost during a reboot, maintaining network integrity.
2.Security Continuity: This practice helps to quickly restore security features like DHCP snooping and ARP inspection, minimizing the window of vulnerability.
3.Operational Efficiency: By preserving these bindings, the switch can resume normal operations faster, reducing disruption to network services.
[Reference: Aruba's AOS-CX configuration guides and best practices for DHCP snooping and ARP inspection detail the importance of saving IP-to-MAC bindings for maintaining network security across reboots., ]
Question # 2
| A company is using HPE Aruba Networking ClearPass Device Insight (CPDI) (the
standalone application). In the CPDI security settings, Security Analysis is On,
the Data Source is ClearPass Devices Insight, and Enable Posture Assessment is On. You
see that device has a Risk Score of 90.
What can you know from this information? | | A. The posture is unhealthy, and CPDI has also detected at least one vulnerability on the
device.
| | B. The posture is unhealthy, but CPDI has not detected any vulnerabilities on the device.
| | C. The posture is healthy, but CPDI has detected multiple vulnerabilities on the device.
| | D. The posture is unknown, and CPDI has detected exactly four vulnerabilities on the
device. |
A. The posture is unhealthy, and CPDI has also detected at least one vulnerability on the
device.
Explanation: In HPE Aruba Networking ClearPass Device Insight (CPDI), a device with a
Risk Score of 90 indicates that the posture is unhealthy, and CPDI has detected at least
one vulnerability on the device. The risk score is a reflection of the device's security
posture and detected vulnerabilities. A high risk score, such as 90, typically signifies
significant security concerns, including the presence of vulnerabilities that could be
exploited, thereby categorizing the device as a high-risk asset within the network.
Question # 3
| A company has AOS-CX switches. The company wants to make it simpler and faster for
admins to detect denial of service (DoS) attacks, such as ping or ARP
floods, launched against the switches.
What can you do to support this use case? | | A. Deploy an NAE agent on the switches to monitor control plane policing (CoPP). | | B. Implement ARP inspection on all VLANs that support end-user devices. | | C. Configure the switches to implement RADIUS accounting to HPE Aruba Networking
ClearPass and enable HPE Aruba Networking ClearPass Insight. | | D. Enabling debugging of security functions on the switches. |
A. Deploy an NAE agent on the switches to monitor control plane policing (CoPP).
Explanation:
To support the detection of denial of service (DoS) attacks on AOS-CX switches, deploying
an NAE (Network Analytics Engine) agent to monitor control plane policing (CoPP) is the
best approach.NAE agents provide real-time analytics and monitoring capabilities, allowing
administrators to detect anomalies and potential DoS attacks, such as ping or ARP floods,
more quickly and efficiently. Control plane policing helps protect the switch’s CPU from
unnecessary or malicious traffic, and the NAE agent can alert administrators when
thresholds are exceeded, providing a proactive measure to detect and mitigate DoS
attacks.
Question # 4
| A company wants to turn on Wireless IDS/IPS infrastructure and client detection at the high
level on HPE Aruba Networking APs. The company does not want to
enable any prevention settings.
What should you explain about HPE Aruba Networking recommendations? | | A. HPE Aruba Networking recommends turning on both wired and wireless prevention
whenever you enable detection at high. | | B. HPE Aruba Networking recommends using hybrid AP mode, as opposed to Air Monitors
(AMs), when implementing detection without prevention. | | C. HPE Aruba Networking recommends disabling client detection when you configure
infrastructure detection at high, as infrastructure detection includes all the client checks and
more. | | D. HPE Aruba Networking recommends configuring infrastructure and client detection at a
custom level and disabling or tuning some of the settings that are likely to produce false positives. |
D. HPE Aruba Networking recommends configuring infrastructure and client detection at a
custom level and disabling or tuning some of the settings that are likely to produce false positives.
Explanation: When enabling Wireless IDS/IPS infrastructure and client detection at a high
level on HPE Aruba Networking APs without enabling prevention settings, HPE Aruba
Networking recommends configuring detection at a custom level and adjusting settings to
minimize false positives. This approach allows for effective monitoring while reducing the
risk of unnecessary alerts and maintaining the accuracy of detections.
1.Custom Level Configuration: By customizing the detection settings, you can tailor the
system to your specific environment, ensuring that only relevant threats are detected and
reducing false positives.
2.False Positive Reduction: Disabling or tuning settings that are likely to produce false
positives helps in maintaining the reliability of the detection system and prevents alert
fatigue.
3.Focused Detection: Custom configuration ensures that the IDS/IPS focuses on critical
detections, improving overall security posture.
Question # 5
| You are deploying a virtual Data Collector for use with HPE Aruba Networking ClearPass Device Insight (CPDI). You have identified VLAN 101 in the data center
as the VLAN to which the Data Collector should connect to receive its IP address and connect to HPE Aruba Networking Central.
Which Data Collector virtual ports should you tell the virtual admins to connect to VLAN 101? | | A. The one with the lowest MAC address | | B. The one with the highest port ID | | C. The one with the highest MAC address | | D. The one with the lowest port ID |
D. The one with the lowest port ID
Explanation:
When deploying a virtual Data Collector for HPE Aruba Networking ClearPass Device Insight (CPDI), it is essential to ensure that the correct virtual port is connected to the designated VLAN. In this case, VLAN 101 is used to receive the IP address and connect to Aruba Central. The best practice is to use the virtual port with the lowest port ID. This is typically the primary port used for management and network connectivity in virtual environments, ensuring proper network integration and communication.
[Reference: Aruba's ClearPass Device Insight deployment guides and virtual appliance setup documentation provide detailed instructions on configuring network interfaces and VLAN assignments., , , , , ]
Question # 6
| A company wants to apply a standard configuration to all AOS-CX switch ports and have
the ports dynamically adjust their configuration based on the identity of
the user or device that connects. They want to centralize configuration of the identity-based
settings as much as possible.
What should you recommend? | | A. Having HPE Aruba Networking ClearPass Policy Manager (CPPM) send standard
RADIUS AVPs to customize port settings | | B. Having switches pull port configurations dynamically from HPE Aruba Networking
Activate | | C. Having switches download user-roles from HPE Aruba Networking gateways | | D. Having switches download user-roles from HPE Aruba Networking ClearPass Policy
Manager (CPPM) |
D. Having switches download user-roles from HPE Aruba Networking ClearPass Policy
Manager (CPPM)
Explanation:
For a company that wants to apply a standard configuration to all AOS-CX switch ports and
dynamically adjust their configuration based on the identity of the user or device that
connects, the best approach is to have the switches download user-roles from HPE Aruba
Networking ClearPass Policy Manager (CPPM). This method centralizes the configuration
of identity-based settings in CPPM, allowing it to dynamically assign roles and policies to
switch ports based on authentication and authorization results. This ensures consistent and
secure network access control tailored to each user or device.
Question # 7
A company has an HPE Aruba Networking ClearPass cluster with several servers.
ClearPass Policy Manager (CPPM) is set up to:
- Update client attributes based on Syslog messages from third-party appliances
- Have the clients reauthenticate and apply new profiles to the clients based on the updates
To ensure that the correct profiles apply, what is one step you should take? | | A. Configure a CoA action for all tag updates in the ClearPass Device Insight integration
settings. | | B. Tune the CoA delay on the ClearPass servers to a value of 5 seconds or greater. | | C. Set the cluster's Endpoint Context Servers polling interval to a value of 5 seconds or
less. | | D. Configure the cluster to periodically clean up (delete) unknown endpoints. |
B. Tune the CoA delay on the ClearPass servers to a value of 5 seconds or greater.
Explanation:
To ensure that the correct profiles apply after client attributes are updated based on Syslog
messages, you should tune the Change of Authorization (CoA) delay on the ClearPass
servers to a value of 5 seconds or greater. This delay allows sufficient time for the attribute
updates to be processed and for the reauthentication to occur correctly, ensuring that the
updated profiles are accurately applied to the clients.
1. CoA Delay: Adjusting the CoA delay ensures that the system has enough time to update
client attributes and reauthenticate them properly before applying new profiles.
2. Profile Accuracy: This delay helps in preventing premature reauthentication and ensures
that the most recent attribute updates are considered when applying profiles.
3. System Synchronization: Ensures synchronization between the attribute update and the
reauthentication process.
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