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HP Aruba Certified Network Security Professional Exam 認定 HPE7-A02 試験問題 (Q61-Q66):
質問 # 61
Refer to the exhibit:
The exhibit shows the TACACS+ enforcement profile that HPE Aruba Networking ClearPass Policy Manager (CPPM) assigns to a manager. When this manager logs into an AOS-CX switch, what does the switch do?
正解:D
解説:
* TACACS+ Enforcement Profile:
* The profile specifies a Service Attribute under Aruba:Common with:
* Name: Aruba-Admin-Role
* Value: operators
* AOS-CX Role Mapping:
* On Aruba AOS-CX switches, the Aruba-Admin-Role attribute maps the authenticated user to predefined roles:
* operators: Operator-level privileges (read-only access, limited commands).
* administrators: Full administrator privileges.
* Other roles like auditors may exist based on configuration.
* Analysis:
* The value operators explicitly maps the user to operator-level privileges, granting read-only access to the AOS-CX switch.
* Since the Aruba-Admin-Role is correctly set and recognized, the switch assigns the appropriate role without errors.
* Option Breakdown:
* Option A: Correct. The switch assigns operator-level privileges based on the Aruba-Admin-Role value.
* Option B: Incorrect. Administrator-level privileges require the role value to be administrators.
* Option C: Incorrect. The manager is successfully authenticated and authorized; there is no error.
* Option D: Incorrect. There is no reference to an auditor role in the configuration shown.
Conclusion:
The operators value in the TACACS+ enforcement profile ensures that the manager is assigned operator-level privileges on the AOS-CX switch.
質問 # 62
Refer to Exhibit:
All of the switches in the exhibit are AOS-CX switches.
What is the preferred configuration on Switch-2 for preventing rogue OSPF routers in this network?
正解:C
解説:
Why MD5 Authentication on Lag 1 is Preferred:
* Lag 1 is the primary link between Switch-2 and Switch-1, both of which are Layer 3 switches running OSPF.
* By enabling MD5 authentication, OSPF routers exchange authenticated packets, preventing unauthorized or rogue OSPF routers from forming adjacencies or injecting routes.
* MD5 is a secure authentication method and ensures the integrity and authenticity of OSPF communications.
Other Options Analysis:
* A. Configure OSPF authentication on VLANs 10-19 in password mode: While configuring authentication on VLAN interfaces could secure VLAN-specific OSPF traffic, it is less effective because the main threat of rogue OSPF comes from unauthorized L3 devices connected via the backbone (Lag 1).
* C. Disable OSPF entirely on VLANs 10-19: Disabling OSPF on these VLANs is not a preferred solution because OSPF is needed to route traffic in this design.
* D. Configure passive-interface as the OSPF default and disable OSPF passive on Lag 1: While passive interfaces prevent OSPF from forming adjacencies, it does not directly prevent rogue routers.
Passive mode only limits OSPF advertisements on specific interfaces.
質問 # 63
The exhibit shows the 802.1X-related settings for Windows domain clients. What should admins change to make the settings follow best security practices?
正解:B
解説:
To follow best security practices for 802.1X authentication settings in Windows domain clients:
* Specify at least two server names under "Connect to these servers":
* Admins should explicitly list trusted RADIUS server names (e.g., radius.example.com) to prevent the client from connecting to unauthorized or rogue servers.
* This mitigates man-in-the-middle (MITM) attacks where an attacker attempts to present their own RADIUS server.
* Select the desired Trusted Root Certificate Authority and "Don't prompt users":
* Select the Trusted Root CA that issued the RADIUS server's certificate. This ensures clients validate the correct server certificate during the EAP-TLS/PEAP authentication process.
* Enabling "Don't prompt users" ensures end users are not confused or tricked into accepting certificates from untrusted servers.
* Why the other options are incorrect:
* Option C: Incorrect. Wildcards in server names (e.g., *.example.com) weaken security and allow broader matching, increasing the risk of rogue servers.
* Option D: Incorrect. Clearing "Use simple certificate selection" requires users to select certificates manually, which can lead to errors and usability issues. Simple certificate selection is recommended when properly configured.
Recommended Settings for Best Security Practices:
* Server Validation: Specify the exact RADIUS server names in the "Connect to these servers" field.
* Root CA Validation: Ensure only the correct Trusted Root Certificate Authority is selected.
* User Prompts: Enable "Don't prompt users" to enforce automatic and secure authentication without user intervention.
質問 # 64
Refer to the Exhibit:
These packets have been captured from VLAN 10. which supports clients that receive their IP addresses with DHCP.
What can you interpret from the packets that you see here?
These packets have been captured from VLAN 10, which supports clients that receive their IP addresses with DHCP. What can you interpret from the packets that you see here?
正解:C
解説:
The exhibit reveals duplicate IP addresses detected for 10.1.140.6, associated with two different MAC addresses:
* 88:56:56:ab:c6:89
* 88:13:30:a3:02:00
Key observations:
* Duplicate IP Address Detection:
* The message "Duplicate IP address detected for 10.1.140.6" clearly indicates two devices claiming the same IP address.
* This typically occurs when one device spoofs the MAC address of another device to intercept or disrupt traffic.
* MAC Spoofing Context:
* MAC spoofing is a tactic used to impersonate another device's hardware address to gain unauthorized access to a network.
* By spoofing a legitimate IP-MAC pairing, an attacker can bypass security mechanisms or cause denial-of-service conditions.
* Why the Other Options are Incorrect:
* Option B (Mirroring Misconfigured): While mirroring misconfiguration can duplicate traffic, it does not lead to a "duplicate IP detected" alert.
* Option C (Misconfigured DHCP): Misconfigurations usually result in DHCP conflicts, but they do not typically involve two different MAC addresses for the same IP.
* Option D (ARP Poisoning/MITM): ARP poisoning involves falsified ARP tables, but it does not directly trigger duplicate IP address detection. Instead, ARP packets flood the network.
Conclusion:
The evidence strongly suggests MAC spoofing, as two different MAC addresses are claiming the same IP address (10.1.140.6). This behavior is typical of attempts to gain unauthorized access or disrupt network operations.
質問 # 65
You have configured an AOS-CX switch to implement 802.1X on edge ports. Assume ports operate in the default auth-mode. VolP phones are assigned to the
"voice" role and need to send traffic that is tagged for VLAN 12.
Where should you configure VLAN 12?
正解:C
解説:
When configuring 802.1X authentication on edge ports of an AOS-CX switch and assigning VoIP phones to a
"voice" role, the correct approach is to configure VLAN 12 as the allowed trunk VLAN in the "voice" role.
This setup ensures that traffic tagged for VLAN 12 is appropriately managed by the role applied to the VoIP phones. In AOS-CX switches, the role-based VLAN configuration allows for more granular control and ensures that the VoIP phones' traffic is handled correctly without altering the edge port settings, which typically operate with default settings for authentication.
質問 # 66
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