Download the Latest HPE6-A78 Dumps – 2025 HPE6-A78 Exam Questions [Q23-Q39]

Published date December 15, 2025

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Download the Latest HPE6-A78 Dumps – 2025 HPE6-A78 Exam Questions

Latest HP HPE6-A78 Certification Practice Test Questions

Q23. A company has a WLAN that uses Tunnel forwarding mode and WPA3-Enterprise security, supported by an Aruba Mobility Controller (MC) and campus APs (CAPs). You have been asked to capture packets from a wireless client connected to this WLAN and submit the packets to the security team.
What is a guideline for this capture?

You should use an Air Monitor (AM) to capture the packets in the air.

You should capture the traffic on the MC dataplane to obtain unencrypted traffic.

You should mirror traffic from the switch port that connects to the AP out on a port connected to a packet analyzer.

You should capture the traffic on the AP, so that the capture is as close to the source as possible.

The correct approach for capturing packets from a wireless client in a WLAN that uses Tunnel forwarding mode and WPA3-Enterprise, managed by an Aruba Mobility Controller and Campus APs, is to use an Air Monitor (AM). An AM is specifically designed to capture wireless traffic “in the air,” which means it listens to the wireless signals transmitted between devices and the access points. This method ensures that the capture includes all the necessary details while maintaining the integrity and security of the data as it is transmitted over the air. Using an Air Monitor helps in analyzing the raw wireless traffic before it gets encrypted or tunneled to the Mobility Controller, providing a clear view of the wireless client’s activity and interactions. The information regarding the use of Air Monitors for packet capture in such environments can be found in the Aruba Network’s official documentation and configuration guides for WLAN setups and security analysis.

Q24. A client has accessed an HTTPS server at myhost1.example.com using Chrome. The server sends a certificate that includes these properties:
Subject name: myhost.example.com
SAN: DNS: myhost.example.com; DNS: myhost1.example.com
Extended Key Usage (EKU): Server authentication
Issuer: MyCA_Signing
The server also sends an intermediate CA certificate for MyCA_Signing, which is signed by MyCA. The client’s Trusted CA Certificate list does not include the MyCA or MyCA_Signing certificates.
Which factor or factors prevent the client from trusting the certificate?

The client does not have the correct trusted CA certificates.

The certificate lacks a valid SAN.

The certificate lacks the correct EKU.

The certificate lacks a valid SAN, and the client does not have the correct trusted CA certificates.

When a client (e.g., a Chrome browser) accesses an HTTPS server, the server presents a certificate to establish a secure connection. The client must validate the certificate to trust the server. The certificate in this scenario has the following properties:
Subject name: myhost.example.com
SAN (Subject Alternative Name): DNS: myhost.example.com; DNS: myhost1.example.com Extended Key Usage (EKU): Server authentication Issuer: MyCA_Signing (an intermediate CA) The server also sends an intermediate CA certificate for MyCA_Signing, signed by MyCA (the root CA).
The client’s Trusted CA Certificate list does not include MyCA or MyCA_Signing.
Certificate Validation Process:
Name Validation: The client checks if the server’s hostname (myhost1.example.com) matches the Subject name or a SAN in the certificate. Here, the SAN includes “myhost1.example.com,” so the name validation passes.
EKU Validation: The client verifies that the certificate’s EKU includes “Server authentication,” which is required for HTTPS. The EKU is correctly set to “Server authentication,” so this validation passes.
Chain of Trust Validation: The client builds a certificate chain from the server’s certificate to a trusted root CA in its Trusted CA Certificate list. The chain is:
Server certificate (issued by MyCA_Signing)
Intermediate CA certificate (MyCA_Signing, issued by MyCA)
Root CA certificate (MyCA, which should be in the client’s trust store) The client’s Trusted CA Certificate list does not include MyCA or MyCA_Signing, meaning the client cannot build a chain to a trusted root CA. This causes the validation to fail.
Option A, “The client does not have the correct trusted CA certificates,” is correct. The client’s trust store must include the root CA (MyCA) to trust the certificate chain. Since MyCA is not in the client’s Trusted CA Certificate list, the client cannot validate the chain, and the certificate is not trusted.
Option B, “The certificate lacks a valid SAN,” is incorrect. The SAN includes “myhost1.example.com,” which matches the server’s hostname, so the SAN is valid.
Option C, “The certificate lacks the correct EKU,” is incorrect. The EKU is set to “Server authentication,” which is appropriate for HTTPS.
Option D, “The certificate lacks a valid SAN, and the client does not have the correct trusted CA certificates,” is incorrect because the SAN is valid, as explained above. The only issue is the missing trusted CA certificates.
The HPE Aruba Networking AOS-CX 10.12 Security Guide states:
“For a client to trust a server’s certificate during HTTPS communication, the client must validate the certificate chain to a trusted root CA in its trust store. If the root CA (e.g., MyCA) or intermediate CA (e.g., MyCA_Signing) is not in the client’s Trusted CA Certificate list, the chain of trust cannot be established, and the client will reject the certificate. The Subject Alternative Name (SAN) must include the server’s hostname, and the Extended Key Usage (EKU) must include ‘Server authentication’ for HTTPS.” (Page 205, Certificate Validation Section) Additionally, the HPE Aruba Networking Security Fundamentals Guide notes:
“A common reason for certificate validation failure is the absence of the root CA certificate in the client’s trust store. For example, if a server’s certificate is issued by an intermediate CA (e.g., MyCA_Signing) that chains to a root CA (e.g., MyCA), the client must have the root CA certificate in its Trusted CA Certificate list to trust the chain.” (Page 45, Certificate Trust Issues Section)
:
HPE Aruba Networking AOS-CX 10.12 Security Guide, Certificate Validation Section, Page 205.
HPE Aruba Networking Security Fundamentals Guide, Certificate Trust Issues Section, Page 45.

Q25. Refer to the exhibit.

You are deploying a new ArubaOS Mobility Controller (MC), which is enforcing authentication to Aruba ClearPass Policy Manager (CPPM). The authentication is not working correctly, and you find the error shown In the exhibit in the CPPM Event Viewer.
What should you check?

that the MC has been added as a domain machine on the Active Directory domain with which CPPM is synchronized

that the snared secret configured for the CPPM authentication server matches the one defined for the device on CPPM

that the IP address that the MC is using to reach CPPM matches the one defined for the device on CPPM

that the MC has valid admin credentials configured on it for logging into the CPPM

Q26. A company with 382 employees wants to deploy an open WLAN for guests. The company wants the experience to be as follows:

The company also wants to provide encryption for the network for devices mat are capable, you implement Tor the WLAN?
Which security options should

WPA3-Personal and MAC-Auth

Captive portal and WPA3-Personai

Captive portal and Opportunistic Wireless Encryption (OWE) in transition mode

Opportunistic Wireless Encryption (OWE) and WPA3-Personal

Q27. What is one benefit of enabling Enhanced Secure mode on an ArubaOS-Switch?

Control Plane policing rate limits edge ports to mitigate DoS attacks on network servers.

A self-signed certificate is automatically added to the switch trusted platform module (TPM).

Insecure algorithms for protocol such as SSH are automatically disabled.

All interfaces have 802.1X authentication enabled on them by default.

In the context of ArubaOS-Switches, enabling Enhanced Secure mode has several benefits, one of which includes disabling insecure algorithms for protocols such as SSH. This is in line with security best practices, as older, less secure algorithms are known to be vulnerable to various types of cryptographic attacks. When Enhanced Secure mode is enabled, the switch automatically restricts the use of such algorithms, thereby enhancing the security of management access.

Q28. Refer to the exhibit.

You have set up a RADIUS server on an ArubaOS Mobility Controller (MC) when you created a WLAN named “MyEmployees .You now want to enable the MC to accept change of authorization (CoA) messages from this server for wireless sessions on this WLAN.
What Is a part of the setup on the MC?

Create a dynamic authorization, or RFC 3576, server with the 10.5.5.5 address and correct shared secret.

Install the root CA associated with the 10 5.5.5 server’s certificate as a Trusted CA certificate.

Configure a ClearPass username and password in the MyEmployees AAA profile.

Enable the dynamic authorization setting in the “clearpass” authentication server settings.

Q29. What is one practice that can help you to maintain a digital chain or custody In your network?

Enable packet capturing on Instant AP or Moodily Controller (MC) datepath on an ongoing basis

Enable packet capturing on Instant AP or Mobility Controller (MC) control path on an ongoing basis.

Ensure that all network infrastructure devices receive a valid clock using authenticated NTP

Ensure that all network Infrastructure devices use RADIUS rather than TACACS+ to authenticate managers

Q30. 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.

Q31. A company is deploying ArubaOS-CX switches to support 135 employees, which will tunnel client traffic to an Aruba Mobility Controller (MC) for the MC to apply firewall policies and deep packet inspection (DPI). This MC will be dedicated to receiving traffic from the ArubaOS-CX switches.
What are the licensing requirements for the MC?

one AP license per-switch

one PEF license per-switch

one PEF license per-switch. and one WCC license per-switch

one AP license per-switch. and one PEF license per-switch

When deploying ArubaOS-CX switches that tunnel client traffic to an Aruba Mobility Controller (MC), the licensing requirements typically involve Policy Enforcement Firewall (PEF) licenses. These licenses enable the MC to enforce firewall policies and perform deep packet inspection (DPI). Therefore, for each switch tunneling traffic to the MC, a PEF license would be necessary.

Q32. Refer to the exhibit, which shows the current network topology.

You are deploying a new wireless solution with an Aruba Mobility Master (MM). Aruba Mobility Controllers (MCs). and campus APs (CAPs). The solution will Include a WLAN that uses Tunnel for the forwarding mode and Implements WPA3-Enterprise security What is a guideline for setting up the vlan for wireless devices connected to the WLAN?

Assign the WLAN to a single new VLAN which is dedicated to wireless users

Use wireless user roles to assign the devices to different VLANs in the 100-150 range

Assign the WLAN to a named VLAN which specified 100-150 as the range of IDs.

Use wireless user roles to assign the devices to a range of new vlan IDs.

When setting up VLANs for a wireless solution with an Aruba Mobility Master (MM), Aruba Mobility Controllers (MCs), and campus APs (CAPs), it is recommended to use wireless user roles to assign devices to different VLANs. This allows for greater flexibility and control over network resources and policies applied to different user groups. Wireless user roles can dynamically assign devices to the appropriate VLAN based on a variety of criteria such as user identity, device type, location, and the resources they need to access. This approach aligns with the ArubaOS features that leverage user roles for network access control, as detailed in Aruba’s configuration and administration guides.

Q33. What is an Authorized client as defined by ArubaOS Wireless Intrusion Prevention System (WIP)?

a client that has a certificate issued by a trusted Certification Authority (CA)

a client that is not on the WIP blacklist

a client that has successfully authenticated to an authorized AP and passed encrypted traffic

a client that is on the WIP whitelist.

Q34. Which is a correct description of a stage in the Lockheed Martin kill chain?

In the delivery stage, malware collects valuable data and delivers or exfilltrated it to the hacker.

In the reconnaissance stage, the hacker assesses the impact of the attack and how much information was exfilltrated.

In the weaponization stage, which occurs after malware has been delivered to a system, the malware executes Its function.

In the exploitation and installation phases, malware creates a backdoor into the infected system for the hacker.

Q35. Two wireless clients, client 1 and client 2, are connected to an ArubaOS Mobility Controller. Subnet 10.1.10.10/24 is a network of servers on the other side of the ArubaOS firewall. The exhibit shows all three firewall rules that apply to these clients.
Which traffic is permitted?

an HTTPS request from client 1 to 10.1.10.10 and an HTTPS response from 10.1.10.10 to client 1

an HTTPS request from client 1 to 10.1.10.10 and an HTTPS request from 10.1.10.11 to client 1

an HTTPS request from 10.1.10.10 to client 1 and an HTTPS re-sponse from client 1 to 10.1.10.10

an HTTPS request from client 1 to client 2 and an HTTPS request from client 2 to client 1

Based on the exhibit showing the firewall rules, the following traffic is permitted:
Client 1 is allowed to send HTTPS traffic to any destination within the subnet 10.1.10.0/24 because there is a permit rule for the user to access svc-https to that subnet.
Responses to initiated connections are typically allowed by stateful firewalls; hence, an HTTPS response from 10.1.10.10 to client 1 is expected to be permitted even though it is not explicitly mentioned in the firewall rules (assuming the stateful nature of the firewall).

Q36. You are deploying an Aruba Mobility Controller (MC). What is a best practice for setting up secure management access to the ArubaOS Web UP

Avoid using external manager authentication tor the Web UI.

Change the default 4343 port tor the web UI to TCP 443.

Install a CA-signed certificate to use for the Web UI server certificate.

Make sure to enable HTTPS for the Web UI and select the self-signed certificate Installed in the factory.

For securing management access to the ArubaOS Web UI of an Aruba Mobility Controller (MC), it is a best practice to install a certificate signed by a Certificate Authority (CA). This ensures that communications between administrators and the MC are secured with trusted encryption, which greatly reduces the risk of man-in-the-middle attacks. Using a CA-signed certificate enhances the trustworthiness of the connection over self-signed certificates, which do not offer the same level of assurance.References:
ArubaOS documentation on management access security.

Q37. 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

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.
References:
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.

Q38. A company has HPE Aruba Networking Mobility Controllers (MCs), HPE Aruba Networking campus APs, and AOS-CX switches. The company plans to use HPE Aruba Networking ClearPass Policy Manager (CPPM) to classify endpoints by type. The company is contemplating the use of ClearPass’s TCP fingerprinting capabilities.
What is a consideration for using those capabilities?

You will need to mirror traffic to one of CPPM’s span ports from a device such as a core routing switch.

ClearPass admins will need to provide the credentials of an API admin account to configure on HPE Aruba Networking devices.

AOS-CX switches do not offer the support necessary for CPPM to use TCP fingerprinting on wired endpoints.

TCP fingerprinting of wireless endpoints requires a third-party Mobility Device Management (MDM) solution.

HPE Aruba Networking ClearPass Policy Manager (CPPM) uses TCP fingerprinting as a passive profiling method to classify endpoints by analyzing TCP packet headers (e.g., TTL, window size) to identify the operating system (e.g., Windows, Linux). The company in this scenario has Mobility Controllers (MCs), campus APs, and AOS-CX switches, and wants to use CPPM’s TCP fingerprinting capabilities for endpoint classification.
TCP Fingerprinting: This method requires CPPM to receive TCP traffic from endpoints. Since CPPM is not typically inline with network traffic, the traffic must be mirrored to CPPM for analysis. This is often done using a SPAN (Switched Port Analyzer) port or mirror port on a switch or controller.
Option A, “You will need to mirror traffic to one of CPPM’s span ports from a device such as a core routing switch,” is correct. For CPPM to perform TCP fingerprinting, it needs to see the TCP traffic from endpoints. This is typically achieved by mirroring traffic from a core routing switch (or another device like an MC) to a SPAN port on the CPPM server. For example, on an AOS-CX switch, you can configure a mirror session with the command mirror session 1 destination interface <CPPM-port> source vlan <vlan-id> to send traffic to CPPM. This is a key consideration for enabling TCP fingerprinting.
Option B, “ClearPass admins will need to provide the credentials of an API admin account to configure on HPE Aruba Networking devices,” is incorrect. TCP fingerprinting does not require API credentials. It is a passive profiling method that analyzes mirrored traffic, and no API interaction is needed between CPPM and Aruba devices for this purpose.
Option C, “AOS-CX switches do not offer the support necessary for CPPM to use TCP fingerprinting on wired endpoints,” is incorrect. AOS-CX switches support mirroring traffic to CPPM (e.g., using a mirror session), which enables CPPM to perform TCP fingerprinting on wired endpoints. The switch does not need to perform the fingerprinting itself; it only needs to send the traffic to CPPM.
Option D, “TCP fingerprinting of wireless endpoints requires a third-party Mobility Device Management (MDM) solution,” is incorrect. TCP fingerprinting is a built-in capability of CPPM and does not require an MDM solution. For wireless endpoints, the MC can mirror client traffic to CPPM (e.g., using a datapath mirror), allowing CPPM to perform TCP fingerprinting.
The HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide states:
“TCP fingerprinting requires ClearPass to receive TCP traffic from endpoints for analysis. A key consideration is that you must mirror traffic to one of ClearPass’s SPAN ports from a device such as a core routing switch or Mobility Controller. For example, on an AOS-CX switch, configure a mirror session with mirror session 1 destination interface <CPPM-port> source vlan <vlan-id> to send traffic to ClearPass for TCP fingerprinting.” (Page 248, TCP Fingerprinting Section) Additionally, the HPE Aruba Networking AOS-8 8.11 User Guide notes:
“For ClearPass to perform TCP fingerprinting on wireless endpoints, the Mobility Controller can mirror client traffic to ClearPass using a datapath mirror. For wired endpoints, an AOS-CX switch can mirror traffic to ClearPass’s SPAN port, enabling TCP fingerprinting without requiring additional support on the switch itself.” (Page 351, Device Profiling with CPPM Section)
:
HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide, TCP Fingerprinting Section, Page 248.
HPE Aruba Networking AOS-8 8.11 User Guide, Device Profiling with CPPM Section, Page 351.

Q39. What is a Key feature of me ArubaOS firewall?

The firewall is stateful which means that n can track client sessions and automatically allow return traffic for permitted sessions

The firewall Includes application layer gateways (ALGs). which it uses to filter Web traffic based on the reputation of the destination web site.

The firewall examines all traffic at Layer 2 through Layer 4 and uses source IP addresses as the primary way to determine how to control traffic.

The firewall is designed to fitter traffic primarily based on wireless 802.11 headers, making it ideal for mobility environments

The ArubaOS firewall is a stateful firewall, meaning that it can track the state of active sessions and can make decisions based on the context of the traffic. This stateful inspection capability allows it to automatically allow return traffic for sessions that it has permitted, thereby enabling seamless two-way communication for authorized users while maintaining the security posture of the network.References:
ArubaOS firewall documentation.

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