HPE6-A78 Exam Questions and Answers

QUESTION: 1

What is a vulnerability of an unauthenticated Dime-Heliman exchange?

A hacker can replace the public values exchanged by the legitimate peers and launch an MITM attack.
A brute force attack can relatively quickly derive Diffie-Hellman private values if they are able to obtain public values
Diffie-Hellman with elliptic curve values is no longer considered secure in modem networks, based on NIST recommendations.
Participants must agree on a passphrase in advance, which can limit the usefulness of Diffie- Hell man in practical contexts.

Answer(s): A

Explanation:

The vulnerability of an unauthenticated Diffie-Hellman exchange, particularly when it comes to the risk of a man-in-the-middle (MITM) attack, is a significant concern. In this scenario, a hacker can intercept the public values exchanged between two legitimate parties and substitute them with their own. This allows the attacker to decrypt or manipulate the messages passing between the two original parties without them knowing. This answer is based on the fundamental principles of how Diffie-Hellman key exchange works and its vulnerabilities without authentication mechanisms. Reference materials from cryptographic textbooks and security protocols detail these vulnerabilities, such as those found in standards and publications by organizations like NIST.

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QUESTION: 2

What is a difference between radius and TACACS+?

RADIUS combines the authentication and authorization process while TACACS+ separates them.
RADIUS uses TCP for Its connection protocol, while TACACS+ uses UDP tor its connection protocol.
RADIUS encrypts the complete packet, white TACACS+ only offers partial encryption.
RADIUS uses Attribute Value Pairs (AVPs) in its messages, while TACACS+ does not use them.

Answer(s): A

Explanation:

RADIUS and TACACS+ are both protocols used for networking authentication, but they handle the processes of authentication and authorization differently. RADIUS (Remote Authentication Dial-In User Service) combines authentication and authorization into a single process, whereas TACACS+ (Terminal Access Controller Access-Control System Plus) separates these processes. This separation in TACACS+ allows more flexible policy enforcement and better control over commands a user can execute. This difference is well-documented in various network security resources, including Cisco's technical documentation and security protocol manuals.

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QUESTION: 3

A company has an Aruba solution with a Mobility Master (MM) Mobility Controllers (MCs) and campus Aps.
What is one benefit of adding Aruba Airwave from the perspective of forensics?

Airwave can provide more advanced authentication and access control services for the AmbaOS solution
Airwave retains information about the network for much longer periods than ArubaOS solution
Airwave is required to activate Wireless Intrusion Prevention (WIP) services on the ArubaOS solution
AirWave enables low level debugging on the devices across the ArubaOS solution

Answer(s): B

Explanation:

Adding Aruba Airwave to an Aruba solution that includes a Mobility Master (MM), Mobility Controllers (MCs), and campus APs offers several benefits, notably in the realm of network forensics. One of the significant advantages is that Airwave can retain detailed information about the network for much longer periods than what is typically possible with just ArubaOS solutions. This extensive data retention is crucial for forensic analysis, allowing network administrators and security professionals to conduct thorough investigations of past incidents. With access to historical data, professionals can identify trends, pinpoint security breaches, and understand the impact of specific changes or events within the network over time.
:
Aruba's official product documentation and user guides for Airwave and ArubaOS, which outline features, benefits, and use cases related to network management and forensic capabilities. Industry case studies and whitepapers that discuss the implementation and advantages of integrating Airwave into existing network infrastructure for enhanced monitoring and security.

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QUESTION: 4

What role does the Aruba ClearPass Device Insight Analyzer play in the Device Insight architecture?

It resides in the cloud and manages licensing and configuration for Collectors
It resides on-prem and provides the span port to which traffic is mirrored for deep analytics.
It resides on-prem and is responsible for running active SNMP and Nmap scans
It resides In the cloud and applies machine learning and supervised crowdsourcing to metadata sent by Collectors

Answer(s): D

Explanation:

The Aruba ClearPass Device Insight Analyzer plays a crucial role within the Device Insight architecture by residing in the cloud and applying machine learning and supervised crowdsourcing to the metadata sent by Collectors. This component of the architecture is responsible for analyzing vast amounts of data collected from the network to identify and classify devices accurately. By utilizing machine learning algorithms and crowdsourced input, the Device Insight Analyzer enhances the accuracy of device detection and classification, thereby improving the overall security and management of the network.
:
Aruba ClearPass official documentation and whitepapers that detail the functionality and deployment of the Device Insight Analyzer.
Technical articles and presentations on network security solutions that discuss the use of machine learning and data analytics in device management.

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QUESTION: 5

What is a correct guideline for the management protocols that you should use on ArubaOS-Switches?

Disable Telnet and use TFTP instead.
Disable SSH and use https instead.
Disable Telnet and use SSH instead
Disable HTTPS and use SSH instead

Answer(s): C

Explanation:

In managing ArubaOS-Switches, the best practice is to disable less secure protocols such as Telnet and use more secure alternatives like SSH (Secure Shell). SSH provides encrypted connections between network devices, which is critical for maintaining the security and integrity of network communications. This guideline is aligned with general security best practices that prioritize the use of protocols with strong, built-in encryption mechanisms to prevent unauthorized access and ensure data privacy.

Reference:

This is a general network management and security practice recommended across various platforms, including but not limited to ArubaOS-Switch documentation and other network security resources.

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QUESTION: 6

Your ArubaoS solution has detected a rogue AP with Wireless intrusion Prevention (WIP).
Which information about the detected radio can best help you to locate the rogue device?

the match method
the detecting devices
the match type
the confidence level

Answer(s): B

Explanation:

When an ArubaOS solution detects a rogue AP with Wireless Intrusion Prevention (WIP), the most crucial information that can help locate the rogue device is the detecting devices. This is because the detecting devices can provide the physical location or the network topology context where the rogue AP has been detected1.
The detecting devices are typically the Air Monitors (AMs) or Access Points (APs) in the network that have identified the rogue AP's presence. These devices can provide information such as the signal strength and the direction from which the rogue AP's signals are being received. By triangulating this information from multiple detecting devices, it becomes possible to pinpoint the physical location of the rogue AP2.
Additionally, the detecting devices can log events and alerts that can be reviewed to understand the rogue AP's behavior, such as the channels it is operating on and the potential impact on the authorized wireless network1. This information is vital for network administrators to quickly and effectively respond to the threat posed by the rogue AP. In contrast, the match method (A) and match type © relate to how the rogue AP is classified and identified by the system, which is useful for classification but not for physical location. The confidence level (D) indicates the system's certainty in the classification but does not aid in locating the device2.

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QUESTION: 7

What is a benefit of deploying Aruba ClearPass Device insight?

Highly accurate endpoint classification for environments with many devices types, including Internet of Things (loT)
visibility into devices' 802.1X supplicant settings and automated certificate deployment
Agent-based analysts of devices' security settings and health status, with the ability to implement quarantining
Simpler troubleshooting of ClearPass solutions across an environment with multiple ClearPass Policy Managers

Answer(s): A

Explanation:

Aruba ClearPass Device Insight offers a significant benefit by providing highly accurate endpoint classification. This feature is particularly useful in complex environments with a wide variety of device types, including IoT devices. Accurate device classification allows network administrators to better understand the nature and behavior of devices on their network, which is crucial for implementing appropriate security policies and ensuring network performance and security.

Reference:

This feature is highlighted in Aruba ClearPass Device Insight literature and is a major selling point of the product as it addresses the challenges posed by diverse and growing device environments in modern networks.

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QUESTION: 8

What is a benefit or using network aliases in ArubaOS firewall policies?

You can associate a reputation score with the network alias to create rules that filler traffic based on reputation rather than IP.
You can use the aliases to translate client IP addresses to other IP addresses on the other side of the firewall
You can adjust the IP addresses in the aliases, and the rules using those aliases automatically update
You can use the aliases to conceal the true IP addresses of servers from potentially untrusted clients.

Answer(s): C

Explanation:

In ArubaOS firewall policies, using network aliases allows administrators to manage groups of IP addresses more efficiently. By associating multiple IPs with a single alias, any changes made to the alias (like adding or removing IP addresses) are automatically reflected in all firewall rules that reference that alias. This significantly simplifies the management of complex rulesets and ensures consistency across security policies, reducing administrative overhead and minimizing the risk of errors.

Reference:

This functionality is part of the ArubaOS firewall management features, designed to enhance the usability and flexibility of network security configurations in dynamic network environments.

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HP HPE6-A78 Exam (page: 1)
HP Aruba Certified Network Security Associate Exam
Updated on: 12-Feb-2026

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HP HPE6-A78 Exam (page: 1) HP Aruba Certified Network Security Associate Exam Updated on: 12-Feb-2026

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HP HPE6-A78 Exam (page: 1)
HP Aruba Certified Network Security Associate Exam
Updated on: 12-Feb-2026