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HPE6-A78 exam covers a wide range of topics related to network security, including network access control, wireless security, firewall technologies, VPN technologies, and intrusion detection and prevention systems. Candidates who Pass HPE6-A78 Exam will have demonstrated their expertise in designing, implementing, and managing secure networks using Aruba's security solutions.

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The Aruba Certified Network Security Associate (ACNSA) certification is a vendor-neutral certification that validates the skills and knowledge required to design, deploy, and manage secure wireless networks. Aruba Certified Network Security Associate Exam certification is designed for individuals who have a solid understanding of network security principles and the ability to implement and maintain secure network infrastructure using Aruba products. The HPE6-A78 Exam is the official certification exam for the ACNSA certification.

HP Aruba Certified Network Security Associate Exam Sample Questions (Q65-Q70):

NEW QUESTION # 65
What is social engineering?

A. Hackers spoof the source IP address in their communications so they appear to be a legitimate user.
B. Hackers use Artificial Intelligence (Al) to mimic a user's online behavior so they can infiltrate a network and launch an attack.
C. Hackers intercept traffic between two users, eavesdrop on their messages, and pretend to be one or both users.
D. Hackers use employees to circumvent network security and gather the information they need to launch an attack.

Answer: D

Explanation:
Social engineering in the context of network security refers to the techniques used by hackers to manipulate individuals into breaking normal security procedures and best practices to gain unauthorized access to systems, networks, or physical locations, or for financial gain. Hackers use various forms of deception to trick employees into handing over confidential or personal information that can be used for fraudulent purposes. This definition encompasses phishing attacks, pretexting, baiting, and other manipulative techniques designed to exploit human psychology. Unlike other hacking methods that rely on technical means, social engineering targets the human element of security. to social engineering, its methods, and defense strategies are commonly found in security training manuals, cybersecurity awareness programs, and authoritative resources like those from the SANS Institute or cybersecurity agencies.

NEW QUESTION # 66
This company has AOS-CX switches. The exhibit shows one access layer switch, Switch-2, as an example, but the campus actually has more switches. Switch-1 is a core switch that acts as the default router for end-user devices.
What is a correct way to configure the switches to protect against exploits from untrusted end-user devices?

A. On Switch-2, enable DHCP snooping globally and on VLANs 15 and 25. Later, enable ARP inspection on the same VLANs.
B. On Switch-1, enable DHCP snooping on VLAN 100 and ARP inspection on VLANs 15 and 25.
C. On Switch-1, enable ARP inspection on VLAN 100 and DHCP snooping on VLANs 15 and 25.
D. On Switch-2, enable BPDU filtering on all edge ports in order to prevent eavesdropping attacks by untrusted devices.

Answer: A

Explanation:
The scenario involves AOS-CX switches in a two-tier topology with Switch-1 as the core switch (default router) on VLAN 100 and Switch-2 as an access layer switch with VLANs 15 and 25, where end-user devices connect. The goal is to protect against exploits from untrusted end-user devices, such as DHCP spoofing or ARP poisoning attacks, which are common threats in access layer networks.
DHCP Snooping: This feature protects against rogue DHCP servers by filtering DHCP messages. It should be enabled on the access layer switch (Switch-2) where end-user devices connect, specifically on the VLANs where these devices reside (VLANs 15 and 25). DHCP snooping builds a binding table of legitimate IP-to-MAC mappings, which can be used by other features like ARP inspection.
ARP Inspection: This feature prevents ARP poisoning attacks by validating ARP packets against the DHCP snooping binding table. It should also be enabled on the access layer switch (Switch-2) on VLANs 15 and 25, where untrusted devices are connected.
Option B, "On Switch-2, enable DHCP snooping globally and on VLANs 15 and 25. Later, enable ARP inspection on the same VLANs," is correct. DHCP snooping must be enabled first to build the binding table, and then ARP inspection can use this table to validate ARP packets. This configuration should be applied on Switch-2, the access layer switch, because that's where untrusted end-user devices connect.
Option A, "On Switch-1, enable ARP inspection on VLAN 100 and DHCP snooping on VLANs 15 and 25," is incorrect. Switch-1 is the core switch and does not directly connect to end-user devices on VLANs 15 and 25. DHCP snooping and ARP inspection should be enabled on the access layer switch (Switch-2) where the devices reside. Additionally, enabling ARP inspection on VLAN 100 (where the DHCP server is) is unnecessary since the DHCP server is a trusted device.
Option C, "On Switch-2, enable BPDU filtering on all edge ports in order to prevent eavesdropping attacks by untrusted devices," is incorrect. BPDU filtering is used to prevent spanning tree protocol (STP) attacks by blocking BPDUs on edge ports, but it does not protect against eavesdropping or other exploits like DHCP spoofing or ARP poisoning, which are more relevant in this context.
Option D, "On Switch-1, enable DHCP snooping on VLAN 100 and ARP inspection on VLANs 15 and 25," is incorrect for the same reason as Option A. Switch-1 is not the appropriate place to enable these features since it's not directly connected to the untrusted devices on VLANs 15 and 25.
The HPE Aruba Networking AOS-CX 10.12 Security Guide states:
"DHCP snooping should be enabled on access layer switches where untrusted end-user devices connect. It must be enabled globally and on the specific VLANs where the devices reside (e.g., dhcp-snooping vlan 15,25). This feature builds a binding table of IP-to-MAC mappings, which can be used by Dynamic ARP Inspection (DAI) to prevent ARP poisoning attacks. DAI should also be enabled on the same VLANs (e.g., ip arp inspection vlan 15,25) after DHCP snooping is configured, ensuring that ARP packets are validated against the DHCP snooping binding table." (Page 145, DHCP Snooping and ARP Inspection Section) Additionally, the guide notes:
"Dynamic ARP Inspection (DAI) and DHCP snooping are typically configured on access layer switches to protect against exploits from untrusted devices, such as DHCP spoofing and ARP poisoning. These features should be applied to the VLANs where end-user devices connect, not on core switches unless those VLANs are directly connected to untrusted devices." (Page 146, Best Practices Section)
:
HPE Aruba Networking AOS-CX 10.12 Security Guide, DHCP Snooping and ARP Inspection Section, Page 145.
HPE Aruba Networking AOS-CX 10.12 Security Guide, Best Practices Section, Page 146.

NEW QUESTION # 67
You have deployed a new Aruba Mobility Controller (MC) and campus APs (CAPs). One of the WLANs enforces 802.IX authentication lo Aruba ClearPass Policy Manager {CPPM) When you test connecting the client to the WLAN. the test falls You check Aruba ClearPass Access Tracker and cannot find a record of the authentication attempt You ping from the MC to CPPM. and the ping is successful.
What is a good next step for troubleshooting?

A. Reset the user credentials
B. Check connectivity between CPPM and a backend directory server
C. Check CPPM Event viewer.
D. Renew CPPM's RADIUS/EAP certificate

Answer: C

Explanation:
When dealing with a failed 802.1X authentication attempt to a WLAN enforced by Aruba ClearPass Policy Manager (CPPM) where no record of the attempt is seen in ClearPass Access Tracker, a good next troubleshooting step is to check the CPPM Event Viewer. Since you are able to successfully ping from the Mobility Controller to CPPM, this indicates that there is network connectivity between these two devices. The lack of a record in Access Tracker suggests that the issue may not be with the RADIUS/EAP certificate or user credentials, but possibly with the ClearPass service itself or its reception of authentication requests. The Event Viewer can provide detailed logs that might reveal internal errors or misconfigurations within CPPM that could prevent it from processing authentication attempts properly.

NEW QUESTION # 68
What is one benefit of enabling Enhanced Secure mode on an ArubaOS-Switch?

A. A self-signed certificate is automatically added to the switch trusted platform module (TPM).
B. All interfaces have 802.1X authentication enabled on them by default.
C. Insecure algorithms for protocol such as SSH are automatically disabled.
D. Control Plane policing rate limits edge ports to mitigate DoS attacks on network servers.

Answer: C

Explanation:
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.

NEW QUESTION # 69
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, enable DHCP snooping globally and on VLAN 201 before enabling ARP protection
B. On Switch-2, make ports connected to employee devices trusted ports for ARP protection
C. On Swltch-2, configure static PP-to-MAC bindings for all end-user devices on the network
D. On Switch-1, enable ARP protection globally, and enable ARP protection on ail VLANs.

Answer: A

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 # 70
......

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