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HP Aruba Certified Network Security Associate Exam Sample Questions (Q53-Q58):

NEW QUESTION # 53
You have an AOS-8 architecture, consisting of a Mobility Conductor (MC) and Mobility Controllers (MCs). You want to monitor wireless clients' application usage in the Traffic Analysis dashboard. What is a requirement?

A. Configuring packet capturing on the MCs' data plane
B. Enabling firewall visibility and deep packet inspection (DPI) on the MCs
C. Discovering the mobility devices in HPE Aruba Networking Central
D. Enabling logging on the users category on the MCs

Answer: B

Explanation:
In an AOS-8 architecture with a Mobility Conductor (MC) and Mobility Controllers (MCs), the Traffic Analysis dashboard (available in the MC UI) allows administrators to monitor wireless clients' application usage (e.g., identifying traffic from applications like Zoom, YouTube, or Skype). To enable this functionality, the MCs must be able to inspect and classify client traffic at the application level.
Firewall Visibility and DPI: The AOS-8 platform includes a stateful firewall that can perform deep packet inspection (DPI) to classify traffic based on application signatures. Enabling "firewall visibility" on the MCs activates DPI, allowing the firewall to inspect packet payloads and identify applications. This data is then used by the Traffic Analysis dashboard to display application usage statistics for wireless clients.
Option D, "Enabling firewall visibility and deep packet inspection (DPI) on the MCs," is correct. Firewall visibility must be enabled on the MCs to perform DPI and classify client traffic by application. This is typically done with the command firewall visibility in the MC configuration, which activates DPI and allows the Traffic Analysis dashboard to display application usage data.
Option A, "Configuring packet capturing on the MCs' data plane," is incorrect. Packet capturing (e.g., using the packet-capture command) is used for manual troubleshooting or analysis, not for enabling the Traffic Analysis dashboard. Packet captures generate raw packet data, which is not processed for application usage statistics.
Option B, "Enabling logging on the users category on the MCs," is incorrect. Enabling logging for the "users" category (e.g., using the logging command) generates logs for user events (e.g., authentication, role assignment), but it does not provide application usage data for the Traffic Analysis dashboard.
Option C, "Discovering the mobility devices in HPE Aruba Networking Central," is incorrect. While discovering devices in Aruba Central can provide centralized monitoring, the Traffic Analysis dashboard in AOS-8 is a local feature on the MC and does not require Aruba Central. Additionally, application usage monitoring requires DPI on the MCs, not just device discovery.
The HPE Aruba Networking AOS-8 8.11 User Guide states:
"The Traffic Analysis dashboard on the Mobility Controller provides visibility into wireless clients' application usage, such as identifying traffic from applications like Zoom or YouTube. To enable this feature, you must enable firewall visibility and deep packet inspection (DPI) on the MCs. Use the command firewall visibility to activate DPI, which allows the firewall to classify traffic by application. The classified data is then displayed in the Traffic Analysis dashboard under Monitoring > Traffic Analysis." (Page 360, Traffic Analysis Dashboard Section) Additionally, the HPE Aruba Networking Security Guide notes:
"Firewall visibility on AOS-8 Mobility Controllers enables deep packet inspection (DPI) to classify client traffic by application. This is required for features like the Traffic Analysis dashboard, which displays application usage statistics for wireless clients, helping administrators monitor network activity." (Page 55, Firewall Visibility Section)
:
HPE Aruba Networking AOS-8 8.11 User Guide, Traffic Analysis Dashboard Section, Page 360.
HPE Aruba Networking Security Guide, Firewall Visibility Section, Page 55.

NEW QUESTION # 54
Refer to the exhibit.

This company has ArubaOS-Switches. The exhibit shows one access layer switch, Swllcn-2. as an example, but the campus actually has more switches. The company wants to slop any internal users from exploiting ARP What Is the proper way to configure the switches to meet these requirements?

A. On Swltch-2, configure static PP-to-MAC bindings for all end-user devices on the network
B. On Switch-2, make ports connected to employee devices trusted ports for ARP protection
C. On Swltch-2, enable DHCP snooping globally and on VLAN 201 before enabling ARP protection
D. On Switch-1, enable ARP protection globally, and enable ARP protection on ail VLANs.

Answer: C

Explanation:
To prevent users from exploiting Address Resolution Protocol (ARP) on a network with ArubaOS-Switches, the correct approach would be to enable DHCP snooping globally and on VLAN 201 before enabling ARP protection, as stated in option C. DHCP snooping acts as a foundation by tracking and securing the association of IP addresses to MAC addresses. This allows ARP protection to function effectively by ensuring that only valid ARP requests and responses are processed, thus preventing ARP spoofing attacks.
Trusting ports that connect to employee devices directly could lead to bypassing ARP protection if those devices are compromised.
The company's goal is to prevent internal users from exploiting ARP within their ArubaOS-Switch network.
Let's break down the options:
Option A (Incorrect): Enabling ARP protection globally on Switch-1 and all VLANs is not the best approach. ARP protection should be selectively applied where needed, not globally. It's also not clear why Switch-1 is mentioned when the exhibit focuses on Switch-2.
Option B (Incorrect): Making ports connected to employee devices trusted for ARP protection is a good practice, but it's not sufficient by itself. Trusted ports allow ARP traffic, but we need an additional layer of security.
Option C (Correct): This is the recommended approach. Here's why:
DHCP Snooping: First, enable DHCP snooping globally. DHCP snooping helps validate DHCP messages and builds an IP-MAC binding table. This table is crucial for ARP protection to function effectively.
VLAN 201: Enable DHCP snooping specifically on VLAN 201 (as shown in the exhibit). This ensures that DHCP messages within this VLAN are validated.
ARP Protection: Once DHCP snooping is in place, enable ARP protection. ARP requests/replies from untrusted ports with invalid IP-to-MAC bindings will be dropped. This prevents internal users from exploiting ARP for attacks like man-in-the-middle.
Option D (Incorrect): While static ARP bindings can enhance security, they are cumbersome to manage and don't dynamically adapt to changes in the network.
References:
ArubaOS-Switch Management and Configuration Guide for WB_16_10 - Chapter 15: IP Routing Features Aruba Security Guide

NEW QUESTION # 55
What is one way that WPA3-PerSonal enhances security when compared to WPA2-Personal?

A. WPA3-Personai is more resistant to passphrase cracking Because it requires passphrases to be at least
12 characters
B. WPA3-Personal is more complicated to deploy because it requires a backend authentication server
C. WPA3-Perscn3i is more secure against password leaking Because all users nave their own username and password
D. WPA3-Personai prevents eavesdropping on other users' wireless traffic by a user who knows the passphrase for the WLAN.

Answer: D

Explanation:
WPA3-Personal enhances security over WPA2-Personal by implementing individualized data encryption.
This feature, known as Wi-Fi Enhanced Open, provides each user's session with a unique encryption key, even if they are using the same network passphrase. This prevents an authenticated user from eavesdropping on the traffic of other users on the same network, thus enhancing privacy and security.References:
Wi-Fi Alliance WPA3-Personal security improvements documentation

NEW QUESTION # 56
Refer to the exhibits.
An admin has created a WLAN that uses the settings shown in the exhibits (and has not otherwise adjusted the settings in the AAA profile). A client connects to the WLAN. Under which circumstances will a client receive the default role assignment?

A. The client has attempted 802.1X authentication, but failed to maintain a reliable connection, leading to a timeout error.
B. The client has passed 802.1X authentication, and the authentication server did not send an Aruba-User-Role VSA.
C. The client has attempted 802.1X authentication, but the MC could not contact the authentication server.
D. The client has passed 802.1X authentication, and the value in the Aruba-User-Role VSA matches a role on the MC.

Answer: B

Explanation:
The exhibit shows the configuration of a WLAN on an AOS-8 Mobility Controller (MC) with the following settings:
Key management: WPA3-Enterprise (indicating 802.1X authentication).
Use CNSA suite: Unchecked (using standard encryption, not the Commercial National Security Algorithm suite).
Key size: 128 bits (standard for AES-GCMP in WPA3).
Reauth interval: 1440 minutes (24 hours, the interval for re-authentication).
Machine authentication: Disabled (only user authentication is required).
Blacklisting: Disabled (clients are not blacklisted after failed attempts).
The question states that the AAA profile settings have not been adjusted, meaning the default roles (e.g., initial role, logon role, 802.1X default role) are not specified in the exhibit and are assumed to be the system defaults (e.g., "logon" for the initial and logon roles, and a default role like "guest" for the 802.1X default role). The question asks under which circumstances a client will receive the "default role assignment," which refers to the 802.1X default role configured in the AAA profile for the WLAN.
802.1X Authentication Process in AOS-8:
When a client connects to a WPA3-Enterprise WLAN, it starts in the initial role (typically "logon") to allow basic connectivity (e.g., DHCP, DNS).
During 802.1X authentication, the client is placed in the logon role to allow communication with the authentication server (e.g., ClearPass Policy Manager, CPPM).
If authentication succeeds, the client is assigned a role:
If the authentication server (e.g., CPPM) sends an Aruba-User-Role VSA with a role that exists on the MC, the client is assigned that role.
If no Aruba-User-Role VSA is sent, the client is assigned the 802.1X default role configured in the AAA profile for the WLAN.
If authentication fails or the server is unreachable, the client may be assigned a different role (e.g., a critical role, if configured) or denied access.
Option A, "The client has attempted 802.1X authentication, but the MC could not contact the authentication server," is incorrect. If the MC cannot contact the authentication server (e.g., due to a timeout), the client does not receive the 802.1X default role. Instead, the MC may apply a critical role (if configured) or deny access, depending on the configuration. The 802.1X default role is applied only after successful authentication.
Option B, "The client has passed 802.1X authentication, and the authentication server did not send an Aruba-User-Role VSA," is correct. If the client successfully authenticates via 802.1X and the authentication server (e.g., CPPM) does not send an Aruba-User-Role VSA, the MC assigns the client the 802.1X default role configured in the AAA profile for the WLAN. This is the "default role assignment" referred to in the question.
Option C, "The client has attempted 802.1X authentication, but failed to maintain a reliable connection, leading to a timeout error," is incorrect. A timeout error during authentication (e.g., the client fails to respond to EAP messages) typically results in an authentication failure, not a successful authentication. The client would not receive the 802.1X default role; it might be denied access or placed in a different role (e.g., a pre-authentication role).
Option D, "The client has passed 802.1X authentication, and the value in the Aruba-User-Role VSA matches a role on the MC," is incorrect. If the authentication server sends an Aruba-User-Role VSA with a role that exists on the MC, the client is assigned that specific role, not the 802.1X default role.
The HPE Aruba Networking AOS-8 8.11 User Guide states:
"After a client successfully authenticates via 802.1X, the Mobility Controller assigns a role to the client. If the authentication server (e.g., a RADIUS server) sends an Aruba-User-Role VSA with a role that exists on the controller, the client is assigned that role. If no Aruba-User-Role VSA is sent in the Access-Accept message, the client is assigned the 802.1X default role configured in the AAA profile for the WLAN. For example, if the AAA profile specifies 'guest' as the 802.1X default role, the client will be assigned the 'guest' role." (Page 305, Role Assignment Section) Additionally, the HPE Aruba Networking Wireless Security Guide notes:
"In WPA3-Enterprise with 802.1X authentication, the default role assignment occurs when a client successfully authenticates but the authentication server does not specify a role via the Aruba-User-Role VSA. In this case, the client receives the 802.1X default role defined in the AAA profile, such as 'guest' or another role configured by the administrator." (Page 42, 802.1X Role Assignment Section)
:
HPE Aruba Networking AOS-8 8.11 User Guide, Role Assignment Section, Page 305.
HPE Aruba Networking Wireless Security Guide, 802.1X Role Assignment Section, Page 42.

NEW QUESTION # 57
You are configuring ArubaOS-CX switches to tunnel client traffic to an Aruba Mobility Controller (MC). What should you do to enhance security for control channel communications between the switches and the MC?

A. Create one UBT zone for control traffic and a second UBT zone for clients.
B. Make sure that the UBT client vlan is assigned to the interface on which the switches reach the MC and only that interface.
C. Configure a long, random PAPI security key that matches on the switches and the MC.
D. install certificates on the switches, and make sure that CPsec is enabled on the MC

Answer: C

Explanation:
When configuring ArubaOS-CX switches to tunnel client traffic to an Aruba Mobility Controller (MC), securing the control channel communications is crucial to prevent unauthorized access and ensure data integrity. Option B is the correct answer as it involves configuring a long, random PAPI security key that matches on both the switches and the MC. The PAPI (Policy Access Point Interface) protocol is used for secure communication between Aruba devices, and employing a robust, randomized security key significantly enhances the security of the control channel. This setup prevents potential interception or manipulation of the control traffic between the devices.
:
ArubaOS-CX Security Configuration Guide
Aruba Networks Official Documentation

NEW QUESTION # 58
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