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HP Aruba Certified Network Security Associate Exam Sample Questions (Q154-Q159):
NEW QUESTION # 154
What is a guideline for managing local certificates on AOS-CX switches?
Answer: B
Explanation:
AOS-CX switches use certificates for various purposes, such as securing HTTPS access to the switch's web interface, authenticating the switch as a RadSec client, or securing other communications. Managing local certificates on AOS-CX switches involves ensuring that the switch trusts the certificate authority (CA) that issued the certificate, which is critical for proper operation.
Option C, "Before installing the local certificate, create a trust anchor (TA) profile with the root CA certificate for the certificate that you will install," is correct. A trust anchor (TA) profile on AOS-CX switches contains the root CA certificate (or intermediate CA certificate) that issued the local certificate. This TA profile allows the switch to validate the certificate chain when the local certificate is installed. For example, if you install a CA-signed certificate for the HTTPS server, the switch needs the root CA certificate in a TA profile to trust the certificate. This is a standard guideline for certificate management on AOS-CX switches to ensure secure and proper operation.
Option A, "Understand that the switch must use the same certificate for all usages, such as its HTTPS server and RadSec client," is incorrect. AOS-CX switches support using different certificates for different purposes. For example, you can have one certificate for the HTTPS server and another for RadSec client authentication, as long as each certificate is associated with the appropriate service and trusted by the switch.
Option B, "Create a self-signed certificate online on the switch because AOS-CX switches do not support CA-signed certificates," is incorrect. AOS-CX switches fully support CA-signed certificates, and using CA-signed certificates is recommended for production environments to ensure trust and security. Self-signed certificates can be used for testing but are not a guideline for general certificate management.
Option D, "Install an Online Certificate Status Protocol (OCSP) certificate to simplify the process of enrolling and re-enrolling for certificates," is incorrect. OCSP is a protocol used to check the revocation status of certificates, not to simplify certificate enrollment. AOS-CX switches support OCSP for certificate validation, but installing an "OCSP certificate" is not a concept in certificate management, and it's not a guideline for managing local certificates.
The HPE Aruba Networking AOS-CX 10.12 Security Guide states:
"Before installing a CA-signed local certificate on the switch, you must create a trust anchor (TA) profile that includes the root CA certificate (or intermediate CA certificate) that issued the local certificate. This ensures that the switch can validate the certificate chain. For example, to install a CA-signed certificate for the HTTPS server, use the command crypto pki ta-profile <profile-name> to create the TA profile, and then import the root CA certificate into the profile using crypto pki import ta-profile <profile-name>. Then, install the local certificate using crypto pki import local-certificate <certificate-name> and associate it with the HTTPS server." (Page 201, Certificate Management Section) Additionally, the guide notes:
"AOS-CX switches support both self-signed and CA-signed certificates. For production environments, it is recommended to use CA-signed certificates and ensure that the appropriate trust anchor profiles are configured to validate the certificate chain." (Page 202, Best Practices Section)
:
HPE Aruba Networking AOS-CX 10.12 Security Guide, Certificate Management Section, Page 201.
HPE Aruba Networking AOS-CX 10.12 Security Guide, Best Practices Section, Page 202.
NEW QUESTION # 155
A company has an ArubaOS controller-based solution with a WPA3-Enterprise WLAN. which authenticates wireless clients to Aruba 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 tailed for the user. The Mobility Controllers (MC's) RADIUS events show that it is receiving Access-Rejects for the authentication attempt.
What is one place that you can you look for deeper insight into why this authentication attempt is failing?
Answer: A
Explanation:
When an authentication attempt for a user's Windows domain computer is failing on a WPA3-Enterprise WLAN and the Mobility Controller is receiving Access-Rejects, one place to look for deeper insight is the RADIUS events within the CPPM Event Viewer. ClearPass Policy Manager (CPPM) logs all RADIUS authentication events, and the Event Viewer would show detailed information about why a particular authentication attempt was rejected. This could include reasons such as incorrect credentials, expired certificates, or policy mismatches. The CPPM Event Viewer is an essential troubleshooting tool within ClearPass to diagnose authentication issues, as indicated in the ClearPass Policy Manager documentation.
NEW QUESTION # 156
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?
Answer: A
NEW QUESTION # 157
What is one way that WPA3-PerSonal enhances security when compared to WPA2-Personal?
Answer: C
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 # 158
Why might devices use a Diffie-Hellman exchange?
Answer: C
Explanation:
Devices use the Diffie-Hellman exchange to agree on a shared secret in a secure manner over an insecure network. The main purpose of this cryptographic protocol is to enable two parties to establish a shared secret over an unsecured communication channel. This shared secret can then be used to encrypt subsequent communications using a symmetric key cipher. The Diffie-Hellman exchange is particularly valuable because it allows the secure exchange of cryptographic keys over a public channel without the need for a prior shared secret. This protocol is a foundational element for many secure communications protocols, including SSL/TLS, which is used to secure connections on the internet. References to the Diffie-Hellman protocol and its uses can be found in standard cryptographic textbooks and documentation such as those from the Internet Engineering Task Force (IETF) and security protocol specifications.
NEW QUESTION # 159
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