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HP HPE6-A73: Aruba Certified Switching Professional Exam

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Question 1

An administrator implements interim accounting for guest users so that ClearPass can track the amount of bandwidth that guests upload and download. Guests that abuse bandwidth consumption should be disconnected from the network. The administrator configures the following on the AOS-CX access switches:
HPE6-A73 dumps exhibit
After performing this configuration, the administrator notices that guest users that have exceeded the guest bandwidth limit are not being disconnected. Upon further investigation, Access Tracker in ClearPass indicates a disconnect CoA message is being sent to the AOS-CX switch.
What is causing this issue?

A. RADIUS change of authorization is not enabled on the AOS-CX switch.

B. Bandwidth consumption of the guests is not being reported by the AOS-CX switch.

C. NTP is not configured on the AOS-CX switch.

D. There is a time discrepancy between the AOS-CX switch and ClearPass.

Correct Answer:A

Question 2

What is correct regarding the configuration of ACLs on AOS-CX switches?

A. Statements with the log keyword are always processed by the switch CPU.

B. Standard ACLs are used to match on routes when performing route distribution.

C. Wildcard masks are used to match on a range of IP addresses.

D. Numbers 100 through 199 and 2000 through 2999 are used when creating extended ACLs.

Correct Answer:C

Question 3

Examine the commands entered on an AOS-CX switch:
What is true regarding this configuration for traffic received on interface 100?

A. The default next-hop address supersedes the two preceding next-hop addresses

B. The traffic is always dropped is the next-hop addresses are unreachable

C. The traffic will be routed with the IP routing table entries if the next-hop addresses are unreachable

D. The next-hop address of 1.1.1.1 is overwritten by the next-hop address of 2.2.2.2

Correct Answer:C
"interface null: equivalent to the policy drop policing action. Any packets matching the class criteria for that policy entry will be dropped and not routed any further."
https://www.arubanetworks.com/techdocs/AOS-CX/10.05/HTML/5200-7300/index.html#GUID-DC7E5E47-8F
More than one next hop can be assigned with an ACL and they work by priority (based on the sequence number: lower sequence number -> higher priority). So next-hop 2.2.2.2 will be used if 1.1.1.1 is not reachable. If both are unreachable, then the packet will be routed looking at the default routing table, if no specific entry will be found, then the pacjet will be routed to the default next hop defined in the ACL.

Question 4

An administrator wants to track what configuration changes were made on a switch. What should the administrator implement to see the configuration changes on an AOS-CX switch?

A. AAA authorization

B. Network Analysis Engine (NAE)

C. AAA authentication

D. VSX synchronization logging

Correct Answer:B

Question 5

An administrator is implementing a downloadable user role solution involving AOS-CX switches. The AAA solution and the AOS-CX switches can successfully authenticate users; however, the role information fails to download to the switches. What policy should be added to an intermediate firewall to allow the downloadable role function to succeed?

A. Allow TCP 443

B. Allow UDP 1811

C. Allow UDP 8211

D. Allow TCP 22

Correct Answer:A
pg 681 from the Aruba guide - "When using DUR, the ClearPass HPE-CPPM-Role VSA is used in combination with HTTPS to transfer the role to the switch." UDP 8211 (PAPI) is related to dynamic segmentation and the communication to the MC not DUR.

Question 6

What is correct regarding rate limiting and egress queue shaping on AOS-CX switches?

A. Only a traffic rate and burst size can be defined for a queue

B. Limits can be defined only for broadcast and multicast traffic

C. Rate limiting and egress queue shaping can be used to restrict inbound traffic

D. Rate limiting and egress queue shaping can be applied globally

Correct Answer:A
you could apply egress queue shaping to the high priority queues to prevent starvation of low priority queues. Egress queue shaping allows you to apply a maximum bandwidth to a priority queue, as well as a burst size. The port buffers excess traffic up to the burst size and sends the buffered traffic at the max rate, smoothing out bursts while also preventing the high priority queue from exceeding its maximum rate and starving out lower priority queues.

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