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| Section | Weight | Objectives |
|---|---|---|
| Analyze | 38% | - Threat and Log Analysis
|
| Forensics | 4% | - Incident Investigation and Reporting
|
| Protect and Defend | 58% | - Security Implementation
|
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28. Frage
A hospital uses an AOS-10 architecture managed through HPE Aruba Networking Central. The customer has deployed a pair of HPE Aruba Networking 9000 Series gateways with Security licenses at every clinic. The gateways run IDS/IPS in IDS mode.
The Security Dashboard displays several recent events with the same signature, as shown below:
Occurred On: 2023-01-12 | Gateway: gw2 | Type: DNS | Source: 10.1.36.152 | Destination: 10.254.1.21 | Action: allowed | Description: DNS Query for TOR Hidden...
Which action could provide valuable context about the incident?
Antwort: B
Begründung:
The Gateway IDS/IPS engine in HPE Aruba Networking Central flags suspicious network activity-such as DNS queries resolving Tor hidden services (.onion)-based on Layer 3-7 signature inspection. However, raw IP addresses alone (e.g., 10.1.36.152) provide insufficient operational context to determine whether an endpoint is a compromised corporate workstation, a malicious guest, or a specialized medical device exhibiting anomalous behavior.
Navigating to the Client Profile in HPE Aruba Networking Central provides comprehensive AI-driven telemetry, detailing the device's profiled category, hardware family, operating system, and MAC vendor. This contextual visibility allows security analysts to immediately understand the device function. For instance, discovering that the IP belongs to an embedded medical device or nurse call station signifies potential malware infection or high-risk compromise, whereas a guest mobile phone requires an entirely different incident response workflow. Viewing AP user tables or RAPIDS provides radio-frequency and rogue AP data, which does not illuminate endpoint identity and role context.
References: HPE Aruba Networking Central Help - Gateway IDS/IPS Monitoring, Client Profiling and Visibility.
29. Frage
You are assisting a company with adding HPE Aruba Networking ClearPass to its network, which uses HPE Aruba Networking network infrastructure devices.
The company already has a Windows domain and Windows CA. The Windows CA issues certificates to domain computers, domain users, and servers such as domain controllers.
Refer to the scenario. On CPPM, you are creating the authentication source. You have configured the settings displayed on the tab and have not changed any other settings.
Authentication Sources - UniversityAD
Hostname: ad.acnsxtest.com
Connection Security: AD over SSL
Port: 636
Verify Server Certificate: [X] Enable
Bind DN: bind@acnsxtest.com
NetBIOS Domain Name: ACNSXTEST
Base DN: dc=acnsxtest,dc=com
Search Scope: SubTree Search
User Certificate: userCertificate
What else must you do to help authentication proceed correctly?
Antwort: C
Begründung:
In default ClearPass Active Directory authentication source configurations, the primary search filter is constructed as:
`( & (sAMAccountName=%{Authentication:Username})(objectClass=user))`
Modern Windows enterprise environments, certificate-based authentication deployments (EAP-TLS and TEAP), and hybrid Entra ID joins frequently identify users via their User Principal Name (UPN) (e.g.,
`user@domain.com`) formatted within the certificate Subject Alternative Name (SAN) or Subject CN. If a client presents their UPN as the authentication identity, the default AD filter fails because
`sAMAccountName` contains only the pre-Windows 2000 logon name (e.g., `user`), not the full UPN string.
To ensure authentication lookups succeed regardless of the username format presented, the search filter on the primary Active Directory authentication source must be updated to query both attributes using an LDAP logical OR statement:
`( & (|(sAMAccountName=%{Authentication:Username})(userPrincipalName=%{Authentication:
Username}))(objectClass=user))`
This modification guarantees that lookups succeed for both legacy NetBIOS usernames and full UPN formatting.
References: ClearPass Policy Manager 6.x Administration Guide - Active Directory Authentication Sources and Filter Definitions.
30. Frage
Refer to the scenario.
You must configure HPE Aruba Networking ClearPass Onboard to issue client certificates for Azure AD- joined devices. Which step is required to accomplish this objective?
Antwort: D
Begründung:
Issuing client certificates from ClearPass Onboard to Microsoft Entra ID (Azure AD)-joined devices managed via Microsoft Intune requires integrating the Simple Certificate Enrollment Protocol (SCEP) with Intune's certificate validation API.
ClearPass utilizes the Microsoft Intune Onboard Enrollment (Intune SCEP) extension to securely interface between the Onboard Certificate Authority (CA) and Microsoft Intune. When an Intune-managed device receives a SCEP configuration profile, it contacts the SCEP enrollment URL exposed by ClearPass Onboard.
ClearPass must validate the incoming SCEP transaction challenge token with Microsoft Cloud Graph/Intune APIs before the Onboard CA signs and issues the client certificate.
Because the Onboard enrollment URL and SCEP service endpoints are hosted and serviced by the ClearPass subscriber nodes (typically bound to the subscriber cluster Virtual IP address), the Intune SCEP extension must be deployed directly onto all ClearPass subscriber servers that handle device enrollment traffic.
Installing the extension enables each subscriber to locally process and validate SCEP challenge payloads in real time.
References: ClearPass Onboard Integration Guide with Microsoft Intune, ClearPass Extensions Configuration.
31. Frage
A company has HPE Aruba Networking gateways implementing gateway IDS/IPS in IDS mode. The customer reports that administrators are receiving repeat email notifications for the same threat too frequently.
Although the threat may require investigation, the customer does not want the email notification to recur as often.
Which setting in HPE Aruba Networking Central should be adjusted?
Antwort: B
Begründung:
In HPE Aruba Networking Central, alert generation and automated notification dispatching are managed through the centralized Alerts & Events framework.
When Gateway IDS/IPS detects signature matches in IDS mode, each individual threat event is logged to the security dashboard. If an endpoint continuously triggers the same signature (such as a compromised device periodically beaconing to an external host), default notification policies can overwhelm administrators with recurring email alerts.
To suppress repetitive alert notifications without blinding the security system to the ongoing event, administrators must adjust the Alert Duration and Threshold parameters within Central's Alert Configuration settings. By increasing the threshold count (the number of threat occurrences required before firing an alert) or extending the aggregation duration window, Central bundles recurring identical events into consolidated notifications.
Modifying the IDS policy strictness (Lenient/Medium/Strict) alters signature matching sensitivity, and allowlists suppress detection entirely, which compromises detection posture. Tuning duration and threshold specifically solves notification fatigue while preserving threat visibility.
References: HPE Aruba Networking Central Guide - Configuring Alerts and Notification Thresholds for Gateway IDS/IPS.
32. Frage
A customer has an HPE Aruba Networking ClearPass cluster. The customer uses AOS-CX switches that perform 802.1X authentication through HPE Aruba Networking ClearPass Policy Manager (CPPM). The switches use local port-access policies.
The customer wants to begin tunneling wired clients that pass user authentication only to an HPE Aruba Networking gateway cluster. The gateway cluster must place these clients in the eth-internet role. The gateway must also assign the clients to VLAN 20.
The proposed enforcement policy and profiles are shown below:
* Policy: `written-exam-3`
* Profile: `written-exam-b`
The gateway cluster contains two gateways with the following IP addresses:
Gateway 1: VLAN 4085 (system IP) = 10.20.4.21 | VLAN 20 (users) = 10.20.20.1 | VLAN 4094 (WAN) =
198.51.100.14
Gateway 2: VLAN 4085 (system IP) = 10.20.4.22 | VLAN 20 (users) = 10.20.20.2 | VLAN 4094 (WAN) =
198.51.100.12 | VRRP on VLAN 20 = 10.20.20.254
The customer needs high availability for tunnels between the switches and the gateway cluster. If one gateway fails, the other gateway must take over its tunnels. The switch must also be able to discover the gateway cluster whether either gateway is present in the cluster.
Refer to the scenario.
You are configuring the UBT zone on an AOS-CX switch. Which IP addresses should you configure in the zone?
Antwort: B
Begründung:
When configuring User-Based Tunneling (UBT) on AOS-CX switches connecting to an HPE Aruba Networking gateway cluster, high availability and node redundancy are handled through cluster protocol signaling rather than static switch IP tracking.
In an Aruba gateway cluster, cluster members elect a Conductor and establish inter-gateway cluster communications. The AOS-CX switch uses the configured `primary-controller` IP address solely as an initial cluster discovery rendezvous point. Once the switch initiates the UBT control tunnel to Gateway 1's system IP (`10.20.4.21`), the gateway responds with the cluster topology, identifying all active cluster members and load-balancing parameters.
AOS-CX UBT guidelines specify that when tunneling to a single gateway cluster, administrators must configure only one cluster member's system IP as the `primary-controller` and leave `backup-controller` undefined. Configuring a second cluster member as the `backup-controller` from within the same cluster is unsupported, as the backup controller parameter is reserved strictly for a secondary, discrete standalone gateway or separate disaster-recovery cluster.
References: AOS-CX Dynamic Segmentation Guide - UBT Gateway Cluster Integration and High Availability.
33. Frage
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