HPE6-A84 Exam Training Practice Tests (HP Aruba Certified Network Security Expert Written)]

Question 1

Refer to the exhibit.

Which security issue is possibly indicated by this traffic capture?

A. An attempt at a DoS attack by a device acting as an unauthorized DNS server B. A port scan being run on the 10.1.7.0/24 subnet C. An ARP poisoning or man-in-the-middle attempt by the device at 94:60:d5:bf:36:40 D. A command and control channel established with DNS tunneling

Correct Answer: D

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Question 2

Refer to the scenario.
# Introduction to the customer
You are helping a company add Aruba ClearPass to their network, which uses Aruba network infrastructure devices.
The company currently has a Windows domain and Windows CA. The Window CA issues certificates to domain computers, domain users, and servers such as domain controllers. An example of a certificate issued by the Windows CA is shown here.

The company is in the process of adding Microsoft Endpoint Manager (Intune) to manage its mobile clients.
The customer is maintaining the on-prem AD for now and uses Azure AD Connect to sync with Azure AD.
# Requirements for issuing certificates to mobile clients
The company wants to use ClearPass Onboard to deploy certificates automatically to mobile clients enrolled in Intune. During this process, Onboard should communicate with Azure AD to validate the clients. High availability should also be provided for this scenario; in other words, clients should be able to get certificates from Subscriber 2 if Subscriber 1 is down.
The Intune admins intend to create certificate profiles that include a UPN SAN with the UPN of the user who enrolled the device.
# Requirements for authenticating clients
The customer requires all types of clients to connect and authenticate on the same corporate SSID.
The company wants CPPM to use these authentication methods:
* EAP-TLS to authenticate users on mobile clients registered in Intune
* TEAR, with EAP-TLS as the inner method to authenticate Windows domain computers and the users on them To succeed, EAP-TLS (standalone or as a TEAP method) clients must meet these requirements:
Their certificate is valid and is not revoked, as validated by OCSP
The client's username matches an account in AD
# Requirements for assigning clients to roles
After authentication, the customer wants the CPPM to assign clients to ClearPass roles based on the following rules:
* Clients with certificates issued by Onboard are assigned the "mobile-onboarded" role
* Clients that have passed TEAP Method 1 are assigned the "domain-computer" role Clients in the AD group "Medical" are assigned the "medical-staff" role Clients in the AD group "Reception" are assigned to the "reception-staff" role The customer requires CPPM to assign authenticated clients to AOS firewall roles as follows:
* Assign medical staff on mobile-onboarded clients to the "medical-mobile" firewall role
* Assign other mobile-onboarded clients to the "mobile-other" firewall role
* Assign medical staff on domain computers to the "medical-domain" firewall role
* All reception staff on domain computers to the "reception-domain" firewall role
* All domain computers with no valid user logged in to the "computer-only" firewall role
* Deny other clients access
# Other requirements
Communications between ClearPass servers and on-prem AD domain controllers must be encrypted.
# Network topology
For the network infrastructure, this customer has Aruba APs and Aruba gateways, which are managed by Central. APs use tunneled WLANs, which tunnel traffic to the gateway cluster. The customer also has AOS-CX switches that are not managed by Central at this point.

# ClearPass cluster IP addressing and hostnames
A customer's ClearPass cluster has these IP addresses:
* Publisher = 10.47.47.5
* Subscriber 1 = 10.47.47.6
* Subscriber 2 = 10.47.47.7
* Virtual IP with Subscriber 1 and Subscriber 2 = 10.47.47.8
The customer's DNS server has these entries
* cp.acnsxtest.com = 10.47.47.5
* cps1.acnsxtest.com = 10.47.47.6
* cps2.acnsxtest.com = 10.47.47.7
* radius.acnsxtest.com = 10.47.47.8
* onboard.acnsxtest.com = 10.47.47.8
The customer has now decided that it needs CPPM to assign certain mobile-onboarded devices to a
"nurse-call" AOS user role. These are mobile-onboarded devices that are communicating with IP address
10.1.18.12 using port 4343.
What are the prerequisites for fulfilling this requirement?

A. Creating a tag on Central to select the proper destination connection and integrating CPPM with Device Insight B. Creating server-based role assignment rules on gateways that apply roles to clients based on traffic destinations C. Creating server-based role assignment rules on APs that apply roles to clients based on traffic destinations D. Setting up traffic classes and role mapping rules within Central's global settings

Correct Answer: B

Question 3

The customer needs a way for users to enroll new wired clients in Intune. The clients should have limited access that only lets them enroll and receive certificates. You plan to set up these rights in an AOS-CX role named "provision." The customer's security team dictates that you must limit these clients' Internet access to only the necessary sites. Your switch software supports IPv4 and IPv6 addresses for the rules applied in the "provision" role.
What should you recommend?

A. Enabling tunneling to the MCs on the "provision" role and then setting up the privileges on the MCs B. Configuring the rules for the "provision" role with IPv6 addresses, which tend to be more stable C. Assigning the "provision" role to a VLAN and then setting up the rules within a Layer 2 access control list (ACL) D. Configuring the "provision" role as a downloadable user role (DUR) in CPPM

Correct Answer: D

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Question 4

Refer to the scenario.
A customer is using an AOS 10 architecture with Aruba APs and Aruba gateways (two per site). Admins have implemented auto-site clustering for gateways with the default gateway mode disabled. WLANs use tunneled mode to the gateways.
The WLAN security is WPA3-Enterprise with authentication to an Aruba ClearPass Policy Manager (CPPM) cluster VIP. RADIUS communications use RADIUS, not RadSec.
CPPM is using the service shown in the exhibits.

Which step can you take to improve operations during a possible gateway failover event?

A. Set up qatewav clusters manually and set VRRP IP addresses for dynamic authorization. B. Use auto-group clustering instead of auto-site clustering for the gateways. C. Enable default gateway mode for the gateway clusters. D. Chanqe the WLANs to mixed-mode forwardinq so that vou can select multiple qatewav clusters.

Correct Answer: A

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Question 5

Refer to the scenario.
A customer requires these rights for clients in the "medical-mobile" AOS firewall role on Aruba Mobility Controllers (MCs):
Permitted to receive IP addresses with DHCP
* Permitted access to DNS services from 10.8.9.7 and no other server
* Permitted access to all subnets in the 10.1.0.0/16 range except denied access to 10.1.12.0/22
* Denied access to other 10.0.0.0/8 subnets
* Permitted access to the Internet
* Denied access to the WLAN for a period of time if they send any SSH traffic
* Denied access to the WLAN for a period of time if they send any Telnet traffic
* Denied access to all high-risk websites
External devices should not be permitted to initiate sessions with "medical-mobile" clients, only send return traffic.
The line below shows the effective configuration for the role.

There are multiple issues with this configuration. What is one change you must make to meet the scenario requirements? (In the options, rules in a policy are referenced from top to bottom. For example,
"medical-mobile" rule 1 is "ipv4 any any svc-dhcp permit," and rule 6 is "ipv4 any any any permit'.)

A. In the "medical-mobile" policy, change the action for rules 2 and 3 to reject. B. In the "medical-mobile" policy, move rule 5 under rule 6. C. In the "medical-mobile* policy, change the subnet mask in rule 5 to 255.255.252.0. D. Apply the "apprf-medical-mobile-sjcT policy explicitly to the 'medical-mobile' user-role under the
'medical-mobile" policy.

Correct Answer: C

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Question 6

A customer has an AOS 10 architecture, which includes Aruba APs. Admins have recently enabled WIDS at the high level. They also enabled alerts and email notifications for several events, as shown in the exhibit.

Admins are complaining that they are getting so many emails that they have to ignore them, so they are going to turn off all notifications.
What is one step you could recommend trying first?

A. Send the email notifications directly to a specific folder, and only check the folder once a week. B. Disable just the Rogue AP and Client Attack Detected alerts, as they overlap with the Infrastructure Attack Detected alert. C. Change the WIDS level to custom, and enable only the checks most likely to indicate real threats. D. Disable email notifications for Roque AP, but leave the Infrastructure Attack Detected and Client Attack Detected notifications on.

Correct Answer: C

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HP Aruba Certified Network Security Expert Written - HPE6-A84 Exam Practice Test