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| Section | Weight | Objectives |
|---|---|---|
| Identity and Access Control | 20% | - Wired/wireless secure access integration - Authentication and authorization architectures - ClearPass deployment and policy design - Role-based and context-aware access control |
| Infrastructure and Perimeter Security | 20% | - Firewall, IDS/IPS, and threat protection - DDoS mitigation and edge security - Secure routing, switching, and segmentation - Aruba AOS / AOS-CX security features |
| Security Operations and Monitoring | 12% | - Network security monitoring and visibility - Log analysis, threat detection, and response - SOC integration and incident handling |
| Threats, Attacks, and Risk Mitigation | 8% | - Threat modeling and vulnerability assessment - Attack types and defense mechanisms - Risk assessment and mitigation planning |
| Governance, Compliance, and Best Practices | 15% | - Network security standards and best practices - Security governance frameworks and policies - Audit, compliance, and risk management |
| Network Security Architecture and Design | 25% | - Multi-layer defense strategies - Zero Trust and micro-segmentation design - Campus, branch, and data center security design - PKI and secure network services design |
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NEW QUESTION # 49
Introduction to the customer
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.
ClearPass cluster IP addressing and hostnames
Publisher = 10.47.47.5
Subscriber 1 = 10.47.47.6
Subscriber 2 = 10.47.47.7
Virtual IP with Subscriber 1 and Subscriber 2 = 10.47.47.8
Refer to the scenario.
You imported the root certificate for the Windows CA into the ClearPass CA Trust list. Based on the scenario requirements, which usages should be added to it?
Answer: B
Explanation:
In ClearPass Policy Manager, the Certificate Authority (CA) Trust List enforces strict trust domain separation using granular usage flags. When an enterprise root or intermediate CA certificate is imported, administrators must assign specific trust usages depending on which subsystems will validate certificates signed by that authority.
1. **EAP Usage**: The Windows CA issues user and computer authentication certificates used for 802.1X
/EAP-TLS (or TEAP) client authentication. ClearPass must validate the cryptographic trust chain of these incoming client certificates during RADIUS authentication; therefore, the `EAP` usage is required.
2. **AD/LDAP Server Usage**: ClearPass queries Active Directory Domain Controllers for authentication and authorization over secure transport (LDAPS over port 636 or StartTLS). The Domain Controllers present directory server certificates issued by the internal Windows Enterprise CA. To validate the TLS identity of the domain controllers during LDAPS handshakes, ClearPass requires the `AD/LDAP Server` usage flag on the root CA.
Usages such as RadSec or HPE Aruba Networking Infrastructure apply strictly to RADIUS-over-TLS communication with network access devices and device management tunnels, which are unrelated to Windows CA client and directory certificates.
References: Aruba Certified Network Security Expert (ACNX) Study Guide - PKI Management, ClearPass Trust List Usages.
NEW QUESTION # 50
A customer has an AOS-10 architecture managed by HPE Aruba Networking Central. HPE Aruba Networking infrastructure devices authenticate clients against an HPE Aruba Networking ClearPass cluster.
In HPE Aruba Networking Central, you are reviewing network traffic flows for a wireless IoT device categorized as "Raspberry Pi" clients. You observe SSH traffic. You then review several additional wireless IoT clients and find that they are also sending SSH.
Refer to the scenario.
You are assisting the customer in evaluating ways to mitigate the potential threat detected. The customer wants to temporarily block misbehaving clients for a penalty period. If a client reconnects and no longer sends SSH traffic, it should be permitted to stay connected.
What approach should you take?
Answer: C
Explanation:
To satisfy the precise operational requirement of temporarily blocking a misbehaving client for an automated penalty period and allowing it to resume normal service upon reconnecting (provided it stops transmitting SSH traffic), the Policy Enforcement Firewall (PEF) role-based denylist rule is the optimal mechanism.
By inserting an Access Control Entry (ACE) into the IoT client's assigned AOS user role that matches TCP port 22 (`svc-ssh`) with an action of `deny-and-blacklist` (or `blacklist`), the gateway or AP instantly and autonomously isolates any offending client the moment SSH traffic is generated. The PEF engine assigns a temporary penalty period dictated by the global denylist timer.
Once this timer expires, the entry is flushed automatically from the hardware table. When the client re- authenticates and associates, it is placed back in its standard role. If the client has been remediated and no longer generates SSH packets, it will not trigger the ACE and will maintain uninterrupted connectivity without manual administrator intervention.
References: ArubaOS 10 User Role Policy Configuration, PEF Denylist Actions and Timers.
NEW QUESTION # 51
A customer has HPE Aruba Networking mobility devices and AOS-CX switches that use RADIUS authentication and accounting with HPE Aruba Networking ClearPass Policy Manager (CPPM). The customer relies on accounting data for auditing and has found that accounting records for clients connected to access switches lack IP address information.
Which action could you take to populate this information?
Answer: B
Explanation:
In 802.1X and MAC-Authentication wired architectures on AOS-CX access switches, initial authentication completes at Layer 2 before the connecting endpoint acquires an IPv4 address via DHCP. Consequently, the initial RADIUS Accounting-Request (Start) packet sent by the switch to ClearPass Policy Manager contains the client's MAC address but omits the IETF attribute 8 (`Framed-IP-Address`).
To populate client IP addresses into subsequent RADIUS Accounting-Request (Interim-Update) packets, the switch must dynamically learn the IP bound to the authenticated MAC address. When DHCP Snooping is enabled on the client VLAN (`dhcp-snooping` and `vlan < ID > dhcp-snooping`), the switch snoops the four- way DORA DHCP handshake.
Upon observing the DHCP ACK, the switch populates its DHCP snooping binding database, tying the client's IP to its hardware MAC address and physical switch port. The port-access accounting engine extracts this IP from the binding table and transmits a RADIUS Accounting Interim-Update containing the `Framed-IP- Address` attribute to ClearPass Policy Manager, ensuring accounting records and Access Tracker session entries reflect the client IP.
References: AOS-CX Security Guide - DHCP Snooping and Port-Access RADIUS Accounting.
NEW QUESTION # 52
A company uses an HPE Aruba Networking EdgeConnect SD-Branch solution. The customer wants to integrate the solution with HPE Aruba Networking SSE.
What is one step that must be completed in HPE Aruba Networking SSE and is not automated as part of the typical setup?
Answer: C
Explanation:
Integrating HPE Aruba Networking EdgeConnect SD-Branch gateways with HPE Aruba Networking Security Service Edge (SSE) leverages Cloud Connect orchestration within HPE Aruba Networking Central. Central automates the primary transport overlay, including discovering cloud Points of Presence (PoPs), provisioning IPsec tunnels between SD-Branch gateways and SSE nodes, mapping IPsec SLAs, and automatically generating Branch Locations within the SSE management portal.
However, once encrypted traffic arrives at the SSE cloud fabric, security policy enforcement is not automated and requires manual security administration. Deep packet inspection, Cloud Access Security Broker (CASB) application control, and Secure Web Gateway (SWG) filtering mandate decrypting TLS-encrypted flows.
Defining SSL/TLS inspection rules-such as specifying which URL categories, domains, or user groups undergo SSL decryption, and configuring necessary SSL bypass rules for sensitive financial/healthcare traffic-must be manually constructed directly within the HPE Aruba Networking SSE policy console.
Without explicitly authoring these SSL inspection rules and installing the SSE root certificate on client endpoints, the cloud platform cannot inspect payload contents or govern granular SaaS application actions.
References: HPE Aruba Networking SSE User Guide - SSL Decryption Policy and EdgeConnect SD-Branch Cloud Connect Integration.
NEW QUESTION # 53
A customer has an AOS-10 architecture managed by HPE Aruba Networking Central. HPE Aruba Networking infrastructure devices authenticate clients against an HPE Aruba Networking ClearPass cluster.
In HPE Aruba Networking Central, you are reviewing network traffic flows for a wireless IoT device categorized as "Raspberry Pi" clients. You observe SSH traffic. You then review several additional wireless IoT clients and find that they are also sending SSH.
Refer to the scenario.
You are helping the customer evaluate ways to mitigate the potential threat that was detected. The customer suggests simply adding a rule that denies SSH traffic to the IoT client's AOS user role.
What is the security drawback of this approach?
Answer: C
Explanation:
In an HPE Aruba Networking Policy Enforcement Firewall (PEF) design, access control entries within an AOS user role can filter and drop traffic matching specific protocol signatures or destination ports, such as dropping TCP port 22 (SSH).
However, applying a simple protocol-specific deny rule leaves the underlying host compromised and operational within the network segment. An attacker maintaining presence on a compromised IoT node is not limited to SSH. Once SSH is blocked, the malware payload can easily pivot to alternative transport mechanisms, including establishing reverse HTTP/HTTPS tunnels, DNS tunneling, conducting lateral Layer 2 reconnaissance, launching internal ARP poisoning attacks, or participating in distributed denial-of-service (DDoS) campaigns against internal medical or corporate assets. Security architecture best practice dictates isolating or quarantining compromised endpoints entirely rather than merely suppressing one observable symptom or protocol.
References: Aruba Certified Network Security Expert (ACNX) Guide - Incident Containment and PEF Policy Design.
NEW QUESTION # 54
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