Aruba Certified Network Security Expert Written Exam

Question 1

Refer to the exhibit.

Which security issue is possibly indicated by this traffic capture?

A. An ARP poisoning or man-in-the-middle attempt by the device at 94:60:d5:bf:36:40

B. A port scan being run on the 10.1.7.0/24 subnet

C. An attempt at a DoS attack by a device acting as an unauthorized DNS server

D. A command and control channel established with DNS tunneling

Correct Answer: D

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Question 2

You are setting up Aruba ClearPass Policy Manager (CPPM) to enforce EAP-TLS authentication with Active Directory as the authentication source. The company wants to prevent users with disabled accounts from connecting even if those users still have valid certificates.
As the first part of meeting these criteria, what should you do to enable CPPM to determine where accounts are enabled in AD or not?

A. Add a custom attribute for userAccountControl to the filters in the AD authentication source.

B. Add an Endpoint Context Server to the domain controller with actions for querying the domain controller for account status.

C. Enable OCSP in the EAP-TLS authentication method settings and configure an OCSP override to the domain controller FQDN.

D. Install a Microsoft Active Directory extension in Aruba ClearPass Guest and set up an HTTP authentication source that points to that extension.

Correct Answer: A

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Question 3

When would you implement BPDU protection on an AOS-CX switch port versus BPDU filtering?

A. Use BPDU protection on edge ports to prevent rogue devices from connecting; use BPDU filtering on inter-switch ports for specialized use cases.

B. Use BPDU protection on edge ports to permanently lock out rogue devices; use BPDU filtering on edge ports to temporarily lock out rogue devices.

C. Use BPDU protection on edge ports to protect against rogue devices when the switch implements MSTP; use BPDU filtering to protect against rogue devices when the switch implements PVSTP+.

D. Use BPDU protection on inter-switch ports to ensure that they are selected as root; use BPDU filtering on edge ports to prevent rogue devices from connecting.

Correct Answer: A

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Question 4

How does Aruba Central handle security for site-to-site connections between AOS 10 gateways?

A. It automatically establishes IPsec tunnels for all site-to-site (all HUBs and Branches) connections using keys securely distributed by Central.

B. It automatically establishes simple-to-manage and highly secure TLSv1.3 tunnels between gateways.

C. It uses an Aruba proprietary integrity and encryption technologies to secure site-to-site connections, making them resistant to zero day attacks.

D. It automatically steers traffic away from Internet-based connections to more secure MPLS connections to reduce encryption overhead.

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 exhibits below show the configuration for the role.

What setting not shown in the exhibit must you check to ensure that the requirements of the scenario are met?

A. That the MCs are assigned RF Protect licenses

B. That denylisting is enabled globally on the MCs' firewalls

C. That AppRF and WebCC are enabled globally and on the medical-mobile role

D. That stateful handling of traffic is enabled globally on the MCs' firewalls and on the medical-mobile role.

Correct Answer: C

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Question 6

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. Apply the "apprf-medical-mobile-sjcT policy explicitly to the 'medical-mobile' user-role under the
'medical-mobile" policy.

B. In the "medical-mobile* policy, change the subnet mask in rule 5 to 255.255.252.0.

C. In the "medical-mobile" policy, change the action for rules 2 and 3 to reject.

D. In the "medical-mobile" policy, move rule 5 under rule 6.

Correct Answer: B

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

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