HP HPE7-A01 Online Practice Questions and Exam Preparation

HP HPE7-A01 Online Questions & Answers

• Question 91:

  An administrator is creating a guest SSID that must encrypt user traffic but must not require credentials or 802.1X authentication.

  Which wireless security method should the administrator select?

  A. WPA3-Personal
  B. WPA3-Enterprise
  C. OWE
  D. Open with captive portal only
  C. OWE

  ---

  Explanation

  OWE, also called Enhanced Open in many Aruba workflows, is intended for situations where encryption is required but user authentication is not. It protects traffic on an otherwise open network by establishing encryption without using a shared password or 802.1X. WPA3-Personal requires a passphrase, and WPA3-Enterprise requires 802.1X with a RADIUS-based authentication workflow. A purely open network with captive portal does not provide over-the-air encryption before portal interaction.

• Question 92:

  You need to drop excessive broadcast traffic on an ingress port or an ArubaOS-CX switch.

  What is the best feature to use for this task?

  A. DWRR queuing
  B. Strict queuing
  C. Rate limiting
  D. QoS shaping
  C. Rate limiting

  ---

  Explanation

  According to the Aruba Documentation Portal1, the ArubaOS-CX switch supports various features to control the ingress traffic on specific ports, such as rate limiting, QoS shaping, and access control. These features can help reduce the impact of excessive broadcast traffic on the network performance and availability. This is because rate limiting is a feature that allows you to limit the inbound or outbound traffic on a port based on a percentage of the port capacity or a fixed amount of bytes per second. Rate limiting can help prevent broadcast storms by reducing the amount of broadcast packets that enter or leave a port

  https://www.arubanetworks.com/techdocs/central/latest/content/nms/aos-cx/cfg/conf-cx-access-control.htm2:

  https://community.arubanetworks.com/blogs/esupport1/2021/02/08/broadcast-storm-containment-in-aruba-pvos-switches3:

  https://techhub.hpe.com/eginfolib/networking/docs/switches/K-KA-KB/15-18/5998-8160_ssw_mcg/content/ch05.html

• Question 93:

  Refer to Exhibit:

  

  With Access-1,

  What needs to be identically configured With MSTP to load-balance VLANS?

  A. Spanning-tree bpdu-guard setting
  B. Spanning-tree instance vlan mapppjng
  C. spanning-tree Cist mapping
  D. Spanning-tree root-guard setting
  B. Spanning-tree instance vlan mapppjng

  ---

  Explanation

  The correct answer is B. Spanning-tree instance VLAN mapping. To load-balance VLANs with MSTP, you need to configure the same VLAN-to-instance mapping on all switches in the same MST region. This means that you need to assign different VLANs to different MST instances, and then adjust the spanning tree parameters (such as priority, cost, or port role) for each instance to achieve the desired load balancing. For example, you can make one switch the root for instance 1 and another switch the root for instance 2, and then map half of the VLANs to instance 1 and the other half to instance 2.

  According to the Cisco document Understand the Multiple Spanning Tree Protocol (802.1s), one of the steps to configure MST is: Split your set of VLANs into more instances and configure different MST settings for each of these instances. In order to easily achieve this, elect Bridge D1 to be the root for VLANs 501 through 1000, and Bridge D2 to be the root for VLANs 1 through 500. These statements are true for this configuration: Switch D1(config)#spanning-tree mst configuration Switch D1(config-mst)#instance 1 vlan 501-1000

  Switch D1(config-mst)#exit

  Switch D1(config)#spanning-tree mst 1 priority 0

  Switch D2(config)#spanning-tree mst configuration Switch D2(config-mst)#instance 2 vlan 1-500

  Switch D2(config-mst)#exit

  Switch D2(config)#spanning-tree mst 2 priority 0 The above commands create two MST instances, 1 and 2, and map VLANs 501-1000 to instance 1 and VLANs 1-500 to instance 2. Then, they make switch D1 the root for instance 1 and switch D2 the root for instance 2.

  The other options are incorrect because:

  A. Spanning-tree bpdu-guard setting is a security feature that disables a port if it receives a BPDU from an unauthorized device. It does not affect load balancing with MSTP.

  C. Spanning-tree CIST mapping is not a valid command. CIST stands for Common and Internal Spanning Tree, which is the spanning tree instance that runs within an MST region and interacts with other regions or non-MST switches.

  D.

  Spanning-tree root-guard setting is another security feature that prevents a port from becoming a root port if it receives superior BPDUs from another switch. It does not affect load balancing with MSTP.

• Question 94:

  A customer has unmanaged mini-switches connected to access ports, and accidental loops sometimes cause outages. The customer also wants the helpdesk to receive notification when a loop is detected.

  Which implementation is most appropriate?

  A. Enable loop protection on edge ports and configure notifications
  B. Enable UDLD on all user ports only
  C. Disable spanning tree on all access switches
  D. Configure OSPF passive interfaces on access ports
  A. Enable loop protection on edge ports and configure notifications

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  Explanation

  Loop protection on edge ports is the proper feature for detecting Layer 2 loops caused by devices such as unmanaged switches at the access edge. When paired with notification or trap functionality, it can both mitigate the loop condition and alert operations staff that the issue occurred. UDLD is meant for detecting unidirectional link problems, typically on direct switch-to-switch fiber links, not general access-layer loop formation. OSPF and spanning tree disablement do not address the described problem safely.

• Question 95:

  A customer is deploying wired 802.1X in a campus environment. The requirement is for ClearPass to be able to disconnect or reauthorize a user session after the initial authentication decision.

  What must be enabled on the switch?

  A. MAC caching
  B. Dynamic authorization for CoA
  C. Enhanced PAPI security
  D. Loop protection trap-option
  B. Dynamic authorization for CoA

  ---

  Explanation

  Dynamic authorization for CoA must be enabled so the switch can accept Change of Authorization or Disconnect messages from ClearPass after the original authentication exchange. This is what allows policy to be adjusted dynamically without waiting for the session to end naturally. MAC caching is a separate access behavior and does not provide post-authentication reauthorization control. Enhanced PAPI security applies to tunnel security, and loop protection trap settings are unrelated to AAA authorization changes.

• Question 96:

  A customer is using Aruba Cloud Guest, but visitors keep complaining that the captive portal page keeps coming up after devices go to sleep.

  Which solution should be enabled to deal with this issue?

  A. MAC Caching under the splash page
  B. MAC Caching under the user-role
  C. Wireless Caching under the splash page
  D. MAC Caching under the WLAN
  A. MAC Caching under the splash page

  ---

  Explanation

  MAC Caching is a feature that allows a guest user to bypass the captive portal page after the first authentication based on their MAC address1 MAC Caching can be enabled under the splash page settings in Aruba Cloud Guest2 MAC Caching can improve the user experience and reduce the network overhead by eliminating the need for repeated authentication.

• Question 97:

  DRAG DROP

  Match the topics of an AOS10 Tunneled mode setup between an AP and a Gateway. (Options may be used more than once or not at all.)

  Select and Place:

  

  

• Question 98:

  What is the best practice for handling voice traffic with dynamic segmentation on AOS-CX switches?

  A. Switch authentication and local forwarding of the voice traffic
  B. Switch authentication and user-based tunneling of the voice traffic.
  C. Central authentication and port-based tunneling of the voice traffic.
  D. Controller authentication and port-based tunneling of all traffic
  A. Switch authentication and local forwarding of the voice traffic

  ---

  Explanation

  This is the best practice for handling voice traffic with dynamic segmentation on AOS-CX switches. Dynamic segmentation is a feature that allows AOS-CX switches to tunnel user traffic to a controller or another switch based on user roles and policies. For voice traffic, it is recommended to use switch authentication and local forwarding, which means the voice devices are authenticated by the switch and their traffic is forwarded locally without tunneling. This reduces latency and jitter for voice traffic and improves voice quality. The other options are incorrect because they either use central authentication or tunneling, which are not optimal for voice traffic.

  References:

  https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-ch05.htmlhttps://www.arubanetworks.com/assets/ds/DS_AOS-CX.pdf

• Question 99:

  For an Aruba AOS10 AP in mixed mode, which factors can be used to determine the forwarding role assigned to a client? (Select two.)

  A. Client IP address
  B. 802.1X authentication result
  C. Client MAC address
  D. Client SSID
  E. Client VLAN
  A. Client IP address
  D. Client SSID

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  Explanation

  Client IP address: This factor can be used to determine if the client is on the same VLAN as the AP or not. If the client IP address is on the same VLAN as the AP, then the client traffic is bridged locally. If the client IP address is on a different VLAN than the AP, then the client traffic is forwarded to the gateway cluster through a secure tunnel 12.

  Client VLAN: This factor can be used to determine if the client belongs to a specific VLAN or not. If the client belongs to a specific VLAN, then the client traffic is forwarded to that VLAN based on its IP address and security profile 12.

• Question 100:

  What does the 802.3bz standard describe?

  A. 2.5Gb and 5Gb Ethernet ports
  B. 60 W and 90W PoE
  C. AP directed roaming between APs
  D. 60 GHz P2P Wi-Fi
  A. 2.5Gb and 5Gb Ethernet ports

  ---

  Explanation

  802.3bz is a standard for Ethernet over twisted pair at speeds of 2.5 and 5 Gbit/s. These use the same cabling as the ubiquitous Gigabit Ethernet, yet offer higher speeds. The resulting standards are named 2.5GBASE-T and 5GBASE-T.

  Option A: 2.5Gb and 5Gb Ethernet ports.

  This is because option A shows how to identify the speed of an Ethernet port based on its name and the standard it supports. A port that supports 2.5GBASE-T or 5GBASE-T is a multi-gigabit port that can operate at speeds of up to 2.5 Gbit/s or 5 Gbit/s over twisted pair cables 23.

  Therefore, option A is correct.

  1:

  https://en.wikipedia.org/wiki/2.5GBASE-T_and_5GBASE-T2:

  https://kb.netgear.com/000049004/What-is-Multi-Gigabit-Ethernet-and-how-can-I-benefit-from-using-NETGEAR-Multi-Gigabit-Ethernet-Switches-in-my-network3:

  https://arstechnica.com/gadgets/2016/09/5gbps-ethernet-standard-details-8023bz/