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| Section | Weight | Objectives |
|---|---|---|
| Protect and Defend | 58% | - Security Implementation
|
| Analyze | 38% | - Threat and Log Analysis
|
| Forensics | 4% | - Incident Investigation and Reporting
|
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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
How does HPE Aruba Networking Central secure site-to-site connections between AOS-10 gateways?
Answer: B
Explanation:
In an AOS-10 SD-WAN enterprise deployment, site-to-site network interconnectivity between Branch Gateways (VPNC clients) and Headend Gateways / VPNCs (Hubs) is established using automated IPsec overlay tunnels.
HPE Aruba Networking Central acts as the cloud orchestrator and control plane for this overlay fabric. Rather than requiring manual IKE phase 1/2 preshared key (PSK) negotiation, crypto-map binding, or complex public key infrastructure (PKI) enrollment across hundreds of distributed gateways, Central automates the entire IPsec lifecycle. Central securely generates, provisions, and distributes dynamic keying material and encryption parameters to all authorized gateways over encrypted management channels.
Gateways leverage these keys to dynamically establish standard authenticated IPsec VPN tunnels across public Internet, broadband, and private transport circuits. Central does not use proprietary encryption schemes (relying instead on industry-standard AES-GCM/CBC IPsec standards) nor does it encapsulate site-to-site WAN overlays inside TLS tunnels.
References: AOS-10 Architecture Guide - SD-WAN Overlay Orchestration and Automated IPsec Tunneling.
NEW QUESTION # 52
A hospital has an AOS-10 architecture managed by HPE Aruba Networking Central. The customer has deployed a pair of HPE Aruba Networking 9000 Series gateways with Security licenses at each clinic. The gateways implement IDS/IPS in IDS mode.
The Security Dashboard shows 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...
Refer to the scenario.
You have learned that nurse call stations are the source of the events. What can you conclude?
Answer: C
Explanation:
The Onion Router (Tor) hidden service architecture utilizes randomized pseudo-top-level `.onion` domains to establish anonymized, encrypted communication channels. In enterprise healthcare networks, dedicated clinical IoT equipment-such as nurse call stations-operates with deterministic, proprietary communication profiles (e.g., local SIP, MQTT, or HTTP/HTTPS to local healthcare application servers).
Nurse call systems have zero operational requirement to resolve or communicate with Tor hidden services.
When an intrusion detection system (IDS) triggers alerts for Tor DNS queries originating from these specialized endpoints, it represents high-confidence anomalous behavior. Advanced malware, ransomware staging engines, and command-and-control (C2) frameworks frequently leverage Tor infrastructure to obfuscate outbound communication, exfiltrate data, or bypass perimeter firewalls.
Because IDS mode only detects and logs threats without blocking them (as evidenced by `Action: allowed` in the dashboard), these endpoints remain active and potentially compromised. The security and networking teams must immediately quarantine and forensically investigate these stations.
References: HPE Aruba Networking Central - Threat Intelligence and Signature Analysis, Healthcare IoT Security Best Practices.
NEW QUESTION # 53
You are helping a developer create a custom NAE script for an AOS-CX switch. What information might you need to provide so the developer can define the parameters correctly?
Answer: A
Explanation:
The Aruba Network Analytics Engine (NAE) framework separates monitoring logic from operational configuration by allowing developers to write generalized Python scripts that can be instantiated into multiple distinct NAE agents.
To make an NAE script adaptable across different switch roles, access layers, or monitoring points, developers utilize the `ParameterDefinitions` dictionary within the NAE manifest. Parameters define input variables-such as specific interface identifiers, utilization thresholds, target RADIUS server IPs, or BGP autonomous system numbers-that operators configure during agent creation.
To define these parameters accurately, the developer requires input on which operational values must be adjusted on a per-agent basis. This ensures the script provides the necessary input types, default values, and validation boundaries. Actions, Solution Exchange tags, and global switch hardware limits do not govern parameter dictionary construction.
References: AOS-CX Network Analytics Engine (NAE) Developer Guide - Manifest and Parameter Definitions.
NEW QUESTION # 54
A client connected to an AOS-CX switch has been assigned Role1. Role1 has the following port-access classes and policy associated with it:
```text
class ip class1
10 match tcp any any eq 22
20 ignore tcp any 10.10.4.0/23 eq 443
30 match ip any 10.10.4.0/23
class ip class2
10 match any any eq 67
20 match ip any 10.10.4.0/22
port-access policy policy1
10 class ip class1 action drop
20 class ip class2
```
The client sends two packets:
1: HTTPS to 10.10.5.5
2: DNS to 10.10.6.6
What occurs?
Answer: C
Explanation:
AOS-CX port-access policies evaluate classifier rules sequentially based on sequence numbers.
Evaluating Packet 1 (HTTPS to 10.10.5.5 on TCP 443):
The packet enters `policy1` at sequence 10 (`class ip class1`). Within `class1`:
* Sequence 10 matches TCP port 22, failing on port.
* Sequence 20 is an `ignore` statement: `ignore tcp any 10.10.4.0/23 eq 443`. The subnet 10.10.4.0/23 spans
10.10.4.0 through 10.10.5.255, so 10.10.5.5 falls within this range. The `ignore` keyword excludes matching traffic from being matched by the class, causing evaluation to bypass sequence 30 and exit `class1` entirely.
* Evaluation proceeds to sequence 20 (`class ip class2`). Neither entry in `class2` matches (port 67 does not match; destination 10.10.5.5 on port 443 matches sequence 20's 10.10.4.0/22 range, covering 10.10.4.0-
10.10.7.255). In AOS-CX port-access policies, an entry without an explicit action defaults to `permit`.
Therefore, Packet 1 is permitted.
Evaluating Packet 2 (DNS to 10.10.6.6 on UDP 53):
* Enters `class1`: Sequence 10 (TCP 22) does not match; Sequence 20 does not match; Sequence 30 targets
10.10.4.0/23 (10.10.4.0-10.10.5.255), so 10.10.6.6 does not match. `class1` does not hit.
* Enters `class2`: Sequence 10 does not match (port 67); Sequence 20 matches `ip any 10.10.4.0/22`. Because
10.10.6.6 is inside 10.10.4.0/22 and `class2` has no explicit drop action, it inherits default `permit`.
Both packets are permitted.
References: AOS-CX Port Access Guide - Classifier Policies, Classes, and Ignore Actions.
NEW QUESTION # 55
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