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HPE Network Switching Expert Practical Exam Free Sample Questions

Description

Covers AAA and policy-based security configuration, OSPF and BGP routing, migrating networks to layer 3 overlay services, multicast configuration and optimization, and structured troubleshooting.

12 free sample questions150 in the full practice test

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HPE4-A53 Sample Questions

  1. Question 1

    Beginner

    Configure and validate security features in CLI and HPE Aruba Networking Central · AAA and access security

    A network administrator is configuring port-based access control on an AOS-CX switch for a mixed environment of corporate laptops and headless IoT devices (like IP cameras). Which authentication method should be prioritized to securely authenticate the IoT devices that lack the ability to install certificates or run specialized supplicant software?

    Answer and explanation

    Correct answer: A

    MAC Authentication is ideal for headless IoT devices (like printers, IP cameras, and HVAC sensors) that do not have the native capability to run an 802.1X supplicant or present user credentials. The switch sends the device's MAC address to the RADIUS server (e.g., ClearPass), which can then profile the device and return the appropriate access role or VLAN.

  2. Question 2

    Intermediate

    Configure and validate security features in CLI and HPE Aruba Networking Central · Dynamic segmentation

    In an HPE Aruba Networking dynamic segmentation architecture utilizing User-Based Tunneling (UBT), what is the primary role of the ClearPass Policy Manager (CPPM) during the client onboarding process?

    Answer and explanation

    Correct answer: C

    In a dynamic segmentation design, ClearPass Policy Manager (CPPM) evaluates the authentication request and returns a RADIUS Access-Accept message containing a Downloadable User Role (DUR). This DUR instructs the AOS-CX access switch on how to handle the client's traffic, including instructions to tunnel the traffic to a gateway via UBT.

  3. Question 3

    AdvancedMultiple answers

    Configure and validate security features in CLI and HPE Aruba Networking Central · Classifier policy

    An expert network engineer is designing a classifier policy on an AOS-CX switch to prioritize voice traffic (DSCP EF) and drop unauthorized video streaming traffic. Which TWO components are strictly required when configuring and successfully applying this classifier policy in the CLI? (Select TWO)

    Answer and explanation

    Correct answers: B, C

    The policy ties the class (match criteria) to an action (like drop, rate-limit, or trust). Without the policy, the class does nothing. The policy is then applied to an interface, VLAN, or user role.

    In AOS-CX, implementing advanced QoS or security policies requires a 'class' to define WHAT traffic to look for (the match criteria), and a 'policy' to define WHAT ACTION to take on that matched traffic. Both are strictly required.

  4. Question 4

    Intermediate

    Configure and validate security features in CLI and HPE Aruba Networking Central · AAA and access security

    You are a network architect tasked with securing the access layer of a financial institution. The company's security policy requires that all physical ports located in the public lobby must only allow a single specific device to connect at any given time. If a different device (a rogue laptop) is plugged into the port, the port must immediately shut down and generate a log event to alert the security team.

    You are implementing this on an AOS-CX edge switch without the use of 802.1X or external AAA servers.

    Which sequence of CLI commands correctly implements these exact requirements on interface 1/1/1?

    Answer and explanation

    Correct answer: B

    In the AOS-CX operating system, port security is configured under the 'port-access port-security' context of the interface. The 'client-limit 1' command restricts the port to a single MAC address, and 'violation action shutdown' ensures the port is disabled if a violation occurs.

  5. Question 5

    Beginner

    Configure and validate security features in CLI and HPE Aruba Networking Central · AAA and access security

    When configuring administrative access to AOS-CX core switches using TACACS+, what is the primary technical advantage of utilizing TACACS+ over RADIUS for device administration?

    Answer and explanation

    Correct answer: C

    A major security advantage of TACACS+ for device administration is that it encrypts the entire payload of the packet, protecting usernames, attributes, and command arguments. RADIUS natively only encrypts the user password, leaving other attributes in plain text.

  6. Question 6

    Intermediate

    Configure and validate security features in CLI and HPE Aruba Networking Central · Dynamic segmentation

    A network engineer is configuring dynamic segmentation and wants to utilize Downloadable User Roles (DUR) provided by ClearPass Policy Manager (CPPM). What is a critical prerequisite configuration that must be present on the AOS-CX access switch for DUR to function successfully?

    Answer and explanation

    Correct answer: B

    When ClearPass returns a DUR, the switch must initiate a secure HTTPS (REST API) connection back to ClearPass to download the actual role contents (ACLs, VLANs, etc.). For this HTTPS connection to establish, the switch must trust the ClearPass server's certificate (or have certificate validation explicitly disabled).

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