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HP HPE6-A78 exam consists of 60 multiple-choice questions, which candidates must answer in 90 minutes. To pass the exam, candidates must score at least 70%. HPE6-A78 exam is available in several languages, including English, Japanese, Korean, and Simplified Chinese. Candidates must register for the exam through Pearson VUE, which is an authorized testing center for HP certification exams.
HP HPE6-A78, also known as the Aruba Certified Network Security Associate exam, is a certification exam designed for IT professionals who are interested in network security. HPE6-A78 exam is specifically tailored to test the candidates' knowledge and skills in deploying and managing Aruba security solutions. Aruba Certified Network Security Associate Exam certification is offered by Hewlett Packard Enterprise, which is a leading provider of IT solutions and services.
HP HPE6-A78 Exam covers a range of topics related to Aruba network security, including network security fundamentals, access control, authentication and encryption, and network security architecture. Candidates are expected to have a deep understanding of these topics and be able to apply their knowledge to real-world scenarios. HPE6-A78 exam format includes multiple-choice questions, drag and drop questions, and simulation-based questions.
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NEW QUESTION # 113
A company has an ArubaOS solution. The company wants to prevent users assigned to the "user_group1" role from using gaming and peer-to-peer applications.
What is the recommended approach for these requirements?
Answer: B
Explanation:
The recommended approach for preventing users in the "user_group1" role from using gaming and peer-to-peer applications in an ArubaOS environment is to enable Deep Packet Inspection (DPI) and add application rules that specifically deny access to these types of applications for the role. DPI allows the network system to analyze the content of network traffic in real time and apply policies based on what it detects, including blocking specific applications like gaming and peer-to-peer sharing. This capability is essential for effectively managing application usage on the network and ensuring compliance with organizational policies. Application-specific rules provide precise control over the network traffic by identifying the application regardless of the network port used, making it a more effective method than blocking based on ports or IP addresses.
NEW QUESTION # 114
What does the NIST model for digital forensics define?
Answer: D
Explanation:
The National Institute of Standards and Technology (NIST) provides guidelines on digital forensics, which include methodologies for properly collecting, examining, and analyzing digital evidence. This framework helps ensure that digital evidence is handled in a manner that preserves its integrity and maintains its admissibility in legal proceedings:
Digital Forensics Process: This process involves steps to ensure that data collected from digital sources can be used reliably in investigations and court cases, addressing chain-of-custody issues, proper evidence handling, and detailed documentation of forensic procedures.
NEW QUESTION # 115
You have deployed a new HPE Aruba Networking Mobility Controller (MC) and campus APs (CAPs). One of the WLANs enforces 802.1X authentication to HPE Aruba Networking ClearPass Policy Manager (CPPM). When you test connecting the client to the WLAN, the test fails. You check 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?
Answer: D
Explanation:
In this scenario, a new HPE Aruba Networking Mobility Controller (MC) and campus APs (CAPs) are deployed, with a WLAN configured for 802.1X authentication using HPE Aruba Networking ClearPass Policy Manager (CPPM) as the RADIUS server. A client test fails, and no record of the authentication attempt appears in ClearPass Access Tracker. However, a ping from the MC to CPPM is successful, confirming basic network connectivity between the MC and CPPM.
The absence of a record in Access Tracker indicates that CPPM did not receive the RADIUS authentication request from the MC, or the request was rejected at a low level before being logged in Access Tracker. Access Tracker typically logs all RADIUS authentication attempts (successful or failed), so the lack of a record suggests a configuration or connectivity issue at the RADIUS level.
Option C, "Check CPPM Event Viewer," is correct. The CPPM Event Viewer logs system-level events, including RADIUS-related errors that might not appear in Access Tracker. For example, if the MC's IP address is not configured as a Network Access Device (NAD) in CPPM, or if the shared secret between the MC and CPPM does not match, CPPM may reject the RADIUS request before it reaches Access Tracker. The Event Viewer will log such errors (e.g., "RADIUS authentication attempt from unknown NAD"), providing insight into why the request was not processed.
Option A, "Renew CPPM's RADIUS/EAP certificate," is incorrect because the issue is that CPPM did not receive or process the authentication request (no record in Access Tracker). If there were a certificate issue (e.g., an expired or untrusted certificate), the request would still reach CPPM, and Access Tracker would log a failure with a certificate-related error.
Option B, "Check connectivity between CPPM and a backend directory server," is incorrect because the issue occurs before CPPM processes the authentication request. If CPPM cannot contact a backend directory server (e.g., Active Directory), the authentication attempt would still be logged in Access Tracker with a failure reason related to the directory server.
Option D, "Reset the user credentials," is incorrect because the issue is not related to the user's credentials. The authentication request never reached CPPM, so the credentials were not evaluated.
The HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide states:
"If an authentication attempt does not appear in Access Tracker, it indicates that the RADIUS request was not received by ClearPass or was rejected at a low level before being logged. The Event Viewer (Monitoring > Event Viewer) should be checked for system-level errors, such as 'RADIUS authentication attempt from unknown NAD' or shared secret mismatches. For example, if the Network Access Device (NAD) IP address of the Mobility Controller is not configured in ClearPass, or if the shared secret does not match, the request will be dropped, and an error will be logged in the Event Viewer." (Page 301, Troubleshooting RADIUS Issues Section) Additionally, the HPE Aruba Networking AOS-8 8.11 User Guide notes:
"When troubleshooting 802.1X authentication issues, verify that the Mobility Controller can communicate with the RADIUS server. If a ping is successful but no authentication records appear in the RADIUS server's logs (e.g., ClearPass Access Tracker), check the RADIUS server's system logs (e.g., ClearPass Event Viewer) for errors related to NAD configuration or shared secret mismatches." (Page 498, Troubleshooting 802.1X Authentication Section)
:
HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide, Troubleshooting RADIUS Issues Section, Page 301.
HPE Aruba Networking AOS-8 8.11 User Guide, Troubleshooting 802.1X Authentication Section, Page 498.
NEW QUESTION # 116
A company has AOS-CX switches deployed in a two-tier topology that uses OSPF routing at the core.
You need to prevent ARP poisoning attacks. To meet this need, what is one technology that you could apply to user VLANs on access layer switches? (Select two.)
Answer: A,B
Explanation:
The scenario involves AOS-CX switches in a two-tier topology (access and core layers) using OSPF routing at the core. The goal is to prevent ARP poisoning attacks on user VLANs at the access layer switches, where end-user devices connect. ARP poisoning (also known as ARP spoofing) is an attack where a malicious device sends fake ARP messages to associate its MAC address with the IP address of another device (e.g., the default gateway), allowing the attacker to intercept traffic.
ARP Inspection (Dynamic ARP Inspection, DAI): This feature prevents ARP poisoning by validating ARP packets against a trusted database of IP-to-MAC bindings. On AOS-CX switches, ARP inspection uses the DHCP snooping binding table to verify that ARP messages come from legitimate devices. If an ARP packet does not match the binding table, it is dropped.
DHCPv4 Snooping: This feature protects against rogue DHCP servers and builds a binding table of legitimate IP-to-MAC mappings by snooping DHCP traffic. The binding table is used by ARP inspection to validate ARP packets. DHCP snooping must be enabled before ARP inspection can function effectively, as it provides the trusted data for validation.
Option A, "ARP inspection," is correct. ARP inspection (DAI) directly prevents ARP poisoning by ensuring that ARP packets are legitimate, making it a key technology for this purpose.
Option B, "OSPF passive interface," is incorrect. OSPF passive interface is used to prevent OSPF from sending routing updates on specific interfaces, typically to reduce routing protocol traffic on user-facing interfaces. It does not prevent ARP poisoning, which is a Layer 2 attack.
Option C, "BPDU guard (protection)," is incorrect. BPDU guard protects against spanning tree protocol (STP) attacks by disabling a port if it receives BPDUs (e.g., from an unauthorized switch). It does not address ARP poisoning, which is unrelated to STP.
Option D, "DHCPv4 snooping," is correct. DHCP snooping is a prerequisite for ARP inspection, as it builds the binding table used to validate ARP packets. It also protects against rogue DHCP servers, which can indirectly contribute to ARP poisoning by assigning incorrect IP addresses.
Option E, "BPDU filtering," is incorrect. BPDU filtering prevents a port from sending or receiving BPDUs, which can be used to protect against STP attacks, but it does not prevent ARP poisoning.
The HPE Aruba Networking AOS-CX 10.12 Security Guide states:
"To prevent ARP poisoning attacks on user VLANs, enable Dynamic ARP Inspection (DAI) on access layer switches. DAI validates ARP packets against the DHCP snooping binding table to ensure they come from legitimate devices. Use the command ip arp inspection vlan <vlan-list> to enable DAI on the specified VLANs. DHCP snooping must be enabled first with dhcp-snooping and dhcp-snooping vlan <vlan-list> to build the binding table used by DAI." (Page 145, ARP Inspection and DHCP Snooping Section) Additionally, the guide notes:
"DHCP snooping and ARP inspection work together to protect against Layer 2 attacks like ARP poisoning. DHCP snooping builds a trusted database of IP-to-MAC bindings, which ARP inspection uses to filter out malicious ARP packets." (Page 146, Best Practices Section)
:
HPE Aruba Networking AOS-CX 10.12 Security Guide, ARP Inspection and DHCP Snooping Section, Page 145.
HPE Aruba Networking AOS-CX 10.12 Security Guide, Best Practices Section, Page 146.
NEW QUESTION # 117
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?
Answer: C
Explanation:
Given the error message from the ClearPass Policy Manager (CPPM) Event Viewer, indicating a RADIUS authentication attempt from an unknown Network Access Device (NAD), you should check that the IP address the Mobility Controller (MC) is using to communicate with CPPM matches the IP address defined for the MC in the CPPM's device inventory. If there is a mismatch in IP addresses, CPPM will not recognize the MC as a known device and will not process the authentication request, leading to the error observed.
References:
ClearPass Policy Manager documentation on device management.
NEW QUESTION # 118
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