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HP Aruba Certified Network Security Associate Exam HPE6-A78 Prüfungsfragen mit Lösungen (Q16-Q21):

16. Frage
You are managing an Aruba Mobility Controller (MC). What is a reason for adding a "Log Settings" definition in the ArubaOS Diagnostics > System > Log Settings page?

A. Configuring a filter that you can apply to a defined Syslog server in order to filter events by subcategory
B. Configuring the MC to generate logs for a particular event category and level, but only for a specific user or AP.
C. Configuring the log facility and log format that the MC will use for forwarding logs to all Syslog servers
D. Configuring the Syslog server settings for the server to which the MC forwards logs for a particular category and level

Antwort: D

Begründung:
The primary reason for adding a "Log Settings" definition in the ArubaOS Diagnostics > System > Log Settings page is to configure the Syslog server settings for the server to which the Mobility Controller (MC) forwards logs for a particular category and level. This setting enables the MC to send detailed logs to a Syslog server for centralized logging and monitoring, which is essential for troubleshooting, security analysis, and compliance with various policies.References:
ArubaOS documentation on log management and Syslog configuration.

17. Frage
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?

A. an HTTPS request from client 1 to 10.1.10.10 and an HTTPS request from 10.1.10.11 to client 1
B. an HTTPS request from 10.1.10.10 to client 1 and an HTTPS re-sponse from client 1 to 10.1.10.10
C. an HTTPS request from client 1 to 10.1.10.10 and an HTTPS response from 10.1.10.10 to client 1
D. an HTTPS request from client 1 to client 2 and an HTTPS request from client 2 to client 1

Antwort: C

Begründung:
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).

18. Frage
What distinguishes a Distributed Denial of Service (DDoS) attack from a traditional Denial or service attack (DoS)?

A. A DDoS attack originates from external devices, while a DoS attack originates from internal devices
B. A DDoS attack targets multiple devices, while a DoS Is designed to Incapacitate only one device
C. A DDoS attack is launched from multiple devices, while a DoS attack is launched from a single device
D. A DoS attack targets one server, a DDoS attack targets all the clients that use a server

Antwort: C

Begründung:
The main distinction between a Distributed Denial of Service (DDoS) attack and a traditional Denial of Service (DoS) attack is that a DDoS attack is launched from multiple devices, whereas a DoS attack originates from a single device. This distinction is critical because the distributed nature of a DDoS attack makes it more difficult to mitigate. Multiple attacking sources can generate a higher volume of malicious traffic, overwhelming the target more effectively than a single source, as seen in a DoS attack. DDoS attacks exploit a variety of devices across the internet, often coordinated using botnets, to flood targets with excessive requests, leading to service degradation or complete service denial.
:
Cybersecurity texts and resources that differentiate between types of denial of service attacks.
Technical documentation and analysis of DDoS tactics, which illustrate how botnets and other distributed systems are employed to execute attacks.

19. Frage
A company has an AOS controller-based solution with a WPA3-Enterprise WLAN, which authenticates wireless clients to HPE Aruba Networking ClearPass Policy Manager (CPPM). The company has decided to use digital certificates for authentication. A user's Windows domain computer has had certificates installed on it. However, the Networks and Connections window shows that authentication has failed for the user. The Mobility Controller's (MC's) RADIUS events show that it is receiving Access-Rejects for the authentication attempt.
What is one place that you can look for deeper insight into why this authentication attempt is failing?

A. The reports generated by HPE Aruba Networking ClearPass Insight
B. The packets captured on the MC control plane destined to UDP 1812
C. The Alerts tab in the authentication record in CPPM Access Tracker
D. The RADIUS events within the CPPM Event Viewer

Antwort: C

Begründung:
The scenario involves an AOS-8 controller-based solution with a WPA3-Enterprise WLAN using HPE Aruba Networking ClearPass Policy Manager (CPPM) for authentication. The company is using digital certificates for authentication (likely EAP-TLS, as it's the most common certificate-based method for WPA3-Enterprise). A user's Windows domain computer has certificates installed, but authentication fails. The Mobility Controller (MC) logs show Access-Rejects from CPPM, indicating that CPPM rejected the authentication attempt.
Access-Reject: An Access-Reject message from CPPM means that the authentication failed due to a policy violation, certificate issue, or other configuration mismatch. To troubleshoot, we need to find detailed information about why CPPM rejected the request.
Option C, "The Alerts tab in the authentication record in CPPM Access Tracker," is correct. Access Tracker in CPPM logs all authentication attempts, including successful and failed ones. For a failed attempt (Access-Reject), the authentication record in Access Tracker will include an Alerts tab that provides detailed reasons for the failure. For example, if the client's certificate is invalid (e.g., expired, not trusted, or missing a required attribute), or if the user does not match a policy in CPPM, the Alerts tab will specify the exact issue (e.g., "Certificate not trusted," "User not found in directory").
Option A, "The reports generated by HPE Aruba Networking ClearPass Insight," is incorrect. ClearPass Insight is used for generating reports and analytics (e.g., trends, usage patterns), not for real-time troubleshooting of specific authentication failures.
Option B, "The RADIUS events within the CPPM Event Viewer," is incorrect. The Event Viewer logs system-level events (e.g., service crashes, NAD mismatches), not detailed authentication failure reasons. While it might log that an Access-Reject was sent, it won't provide the specific reason for the rejection.
Option D, "The packets captured on the MC control plane destined to UDP 1812," is incorrect. Capturing packets on the MC control plane for UDP 1812 (RADIUS authentication port) can show the RADIUS exchange, but it won't provide the detailed reason for the Access-Reject. The MC logs already show the Access-Reject, so the issue lies on the CPPM side, and Access Tracker provides more insight.
The HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide states:
"Access Tracker (Monitoring > Live Monitoring > Access Tracker) logs all authentication attempts, including failed ones. For an Access-Reject, the authentication record in Access Tracker includes an Alerts tab that provides detailed reasons for the failure. For example, in a certificate-based authentication (e.g., EAP-TLS), the Alerts tab might show 'Certificate not trusted' if the client's certificate is not trusted by ClearPass, or 'User not found' if the user does not match a policy. This is the primary place to look for deeper insight into authentication failures." (Page 299, Access Tracker Troubleshooting Section) Additionally, the HPE Aruba Networking AOS-8 8.11 User Guide notes:
"If the Mobility Controller logs show an Access-Reject from the RADIUS server (e.g., ClearPass), check the RADIUS server's authentication logs for details. In ClearPass, the Access Tracker provides detailed failure reasons in the Alerts tab of the authentication record, such as certificate issues or policy mismatches." (Page 500, Troubleshooting 802.1X Authentication Section)
:
HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide, Access Tracker Troubleshooting Section, Page 299.
HPE Aruba Networking AOS-8 8.11 User Guide, Troubleshooting 802.1X Authentication Section, Page 500.

20. Frage
What is a difference between radius and TACACS+?

A. RADIUS uses TCP for Its connection protocol, while TACACS+ uses UDP tor its connection protocol.
B. RADIUS encrypts the complete packet, white TACACS+ only offers partial encryption.
C. RADIUS uses Attribute Value Pairs (AVPs) in its messages, while TACACS+ does not use them.
D. RADIUS combines the authentication and authorization process while TACACS+ separates them.

Antwort: D

Begründung:
RADIUS and TACACS+ are both protocols used for networking authentication, but they handle the processes of authentication and authorization differently. RADIUS (Remote Authentication Dial-In User Service) combines authentication and authorization into a single process, whereas TACACS+ (Terminal Access Controller Access-Control System Plus) separates these processes. This separation in TACACS+ allows more flexible policy enforcement and better control over commands a user can execute. This difference is well-documented in various network security resources, including Cisco's technical documentation and security protocol manuals.

21. Frage
......

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HPE6-A78 Deutsche Prüfungsfragen, HPE6-A78 Buch

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HP Aruba Certified Network Security Associate Exam HPE6-A78 Prüfungsfragen mit Lösungen (Q16-Q21):

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