HP HPE7-A01 Online Practice Questions and Exam Preparation

HP HPE7-A01 Online Questions & Answers

• Question 71:

  A customer is using stacked Aruba CX 6200 and CX 6300 switches for access and a VSX pair of Aruba CX 8325 as a collapsed core 802 1X is implemented for authentication. Due to the lack of cabling, some unmanaged switches are still in use Sometimes devices behind these switches cause network outages.

  The switch should send a warning to the helpdesk when the problem occurs You have been asked to implement an effective solution to the problem.

  What is the solution for this?

  A. Configure spanning tree on the Aruba CX 8325 switches Set the trap-option
  B. Configure loop protection on all edge ports of the Aruba CX 6200 and CX 6300 switches No trap option is needed
  C. Configure loop protection on all edge ports of the Aruba CX 6200 and CX 6300 switches Set up the trap-option
  D. Configure spanning tree on the Aruba CX 6200 and CX 6300 switches No trap option is needed
  C. Configure loop protection on all edge ports of the Aruba CX 6200 and CX 6300 switches Set up the trap-option

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  Explanation

  This is the correct solution to the problem of devices behind unmanaged switches causing network outages due to loops. Loop protection is a feature that allows an Aruba CX switch to detect and prevent loops by sending loop protection packets on each port, LAG, or VLAN on which loop protection is enabled. If a loop protection packet is received by the same switch that sent it, it indicates a loop exists and an action is taken based on the configuration. Loop protection should be configured on all edge ports of the Aruba CX 6200 and CX 6300 switches, which are the ports that connect to end devices or unmanaged switches. The trap-option should be set up to send a warning to the helpdesk when a loop is detected. The other options are incorrect because they either do not configure loop protection or do not set up the trap-option.

  References:

  https://www.arubanetworks.com/techdocs/AOS-CX/10.05/HTML/5200-7540/GUID-99A8B276-0DA3-4458-AFD8-42BFEC29D4F5.htmlhttps://www.arubanetworks.com/techdocs/AOS-CX/10.05/HTML/5200-7540/GUID-D8613BDE-CD21-4B83-8561-17DB0311ED8F.html

• Question 72:

  You are configuring an SVI on an Aruba CX switch that needs to have the following characteristics:

  VLANID = 25

  IPv4 address 10 105 43 1 with mask 255 255 255.0 IPv6 address fd00:5708::f02d:4df6 with a 64 bit prefix length member of VRF eng

  VRF eng and VLAN 25 have not yet been created

  Which command lists will satisfy the requirements with the least number of commands?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

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  Explanation

  The other options either use more commands or do not create the VRF or the VLAN.

  Option C uses the following commands: vrf eng: This command creates a VRF named eng and enters the VRF configuration mode 1.

  vlan 25: This command creates a VLAN with ID 25 and enters the VLAN configuration mode2.

  interface vlan 25: This command creates an SVI on VLAN 25 and enters the interface configuration mode 3.

  ip address 10.105.43.1/24 ipv6 address fd00:5780::102d:4df6/64 vrf attach eng:

  This command assigns an IPv4 address of 10.105.43.1 with a subnet mask of 255.255.255.0 and an IPv6 address of fd00:5780::102d:4df6 with a prefix length of 64 to the SVI, and attaches it to the VRF eng.

• Question 73:

  A large retail client is looking to generate a rich set of contextual data based on the location information of wireless clients in their stores.

  Which standard uses Round Trip Time (RTT) and Fine Time Measurements (FTM) to calculate the distance a client is from an AP?

  A. 802.11ah
  B. 802.11mc
  C. 802.11be
  D. 802.11V
  B. 802.11mc

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  Explanation

  802.11mc is a standard that uses Round Trip Time (RTT) and Fine Time Measurements (FTM) to calculate the distance a client is from an AP. 802.11mc defines a protocol for exchanging FTM frames between an AP and a client, which contain timestamps that indicate when the frames were transmitted and received. By measuring the RTT of these frames, the AP or the client can estimate their distance based on the speed of light. The other options are incorrect because they either do not use RTT or FTM or do not exist as standards.

  References:

  https://www.arubanetworks.com/assets/wp/WP_WiFi6.pdfhttps://www.arubanetworks.com/assets/ds/DS_AP510Series.pdf

• Question 74:

  Review the exhibit.

  

  You are troubleshooting an issue with a 10 102.39 0/24 subnet which is also VLAN 1000 used Tor wireless clients on a pair of Aruba CX 8360 switches The subnet SVI is configured on the 8360 pair, and the DHCP server is a Microsoft

  Windows Server 2022 Standard with an IP address of 10 200 1.100. The 10.102.250.0/24 subnet is used for switch management.

  A large number of DHCP requests are failing You are observing sporadic DHCP behavior across clients attached to the CX 6100 switch.

  Which action may help fix the issue?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

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  Explanation

  Option C is the only action that configures the DHCP relay on the SVI of VLAN 1000 on the CX 8360 switches. DHCP relay is a feature that allows a switch to forward DHCP requests from clients in one subnet to a DHCP server in another subnet. DHCP relay is required when the DHCP server and the clients are not in the same broadcast domain 1.

  Option C uses the following commands: interface vlan 1000: This command enters the interface configuration mode for the SVI of VLAN 1000, which has an IP address of 10.102.39.1/24 and is used for wireless clients. ip helper-address vrf default 10.200.1.100: This command configures the IP address of the DHCP server as a helper address for the SVI, which means that the switch will forward DHCP requests from clients on VLAN 1000 to this address.

  The vrf default parameter indicates that the SVI and the DHCP server are in the same VRF.

• Question 75:

  DRAG DROP

  List the WPA 4-Way Handshake functions in the correct order.

  Select and Place:

  

  

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  Proves knowledge of the PMK Exchanges messages for generating PTK Distributes an encrypted GTK to the client Sets first initialization vector (IV)

• Question 76:

  A customer wants to provide wired security as close to the source as possible

  The wired security must meet the following requirements:

  1. allow ping from the IT management VLAN to the user VLAN

  2. deny ping sourcing from the user VLAN to the IT management VLAN

  The customer is using Aruba CX 6300s

  What is the correct way to implement these requirements?

  A. Apply an outbound ACL on the user VLAN allowing temp echo-reply traffic toward the IT management VLAN
  B. Apply an inbound ACL on the user VLAN allowing icmp echo-reply traffic toward the IT management VLAN
  C. Apply an inbound ACL on the user VLAN denying icmp echo traffic toward the IT management VLAN
  D. Apply an outbound ACL on the user VLAN denying icmp echo traffic toward the IT management VLAN
  C. Apply an inbound ACL on the user VLAN denying icmp echo traffic toward the IT management VLAN

  ---

  Explanation

  An inbound ACL is applied to traffic entering a port or VLAN. An outbound ACL is applied to traffic leaving a port or VLAN4. To deny ping sourcing from the user VLAN to the IT management VLAN, an inbound ACL on the user VLAN should be used to filter icmp echo traffic toward the IT management VLAN. Icmp echo-reply traffic is not needed to be allowed because it is already permitted by default 5.

  References:

  4 (https://techhub.hpe.com/eginfolib/Aruba/OS-CX_10.04/5200-6692/GUID-9B8F6E8F-9C7A-4F0D-AE7B-9D8E6C5B6A7F.html)

  5 (https://techhub.hpe.com/eginfolib/Aruba/OS-CX_10.04/5200-6692/GUID-0C3A9D0F-6E5B-4E1A-AF3C-8D8B2F9C1A7B.html)

• Question 77:

  A customer just upgraded aggregation layer switches and noticed traffic dropping for 120 seconds after the aggregation layer came online again.

  What is the best way to avoid having this traffic dropped given the topology below?

  

  A. Configure the linkup delay timer to 240 seconds to double the amount of lime for the initial phase to sync
  B. Configure the linkup delay timer to exclude LAGS 101 and 102, which will allow time for routing adjacencies to form and to learn upstream routes
  C. Configure the linkup delay timer to include LAGs 101 and 102, which will allow time for routing adjacencies lo form and to learn upstream routes
  D. Configure the linkup delay timer to 120 seconds, which will allow the right amount of time for the initial phase to sync
  C. Configure the linkup delay timer to include LAGs 101 and 102, which will allow time for routing adjacencies lo form and to learn upstream routes

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  Explanation

  The reason is that the linkup delay timer is a feature that delays bringing downstream VSX links up, following a VSX device reboot or an ISL flap. The linkup delay timer has two phases: initial synchronization phase and link-up delay phase.

  The initial synchronization phase is the download phase where the rebooted node learns all the LACP+MAC+ARP+STP database entries from its VSX peer through ISLP. The initial synchronization timer, which is not configurable, is the required time to download the database information from the peer.

  The link-up delay phase is the duration for installing the downloaded entries to the ASIC, establishing router adjacencies with core nodes and learning upstream routes. The link-up delay timer default value is 180 seconds. Depending on the network size, ARP/routing tables size, you might be required to set the timer to a higher value (maximum 600 seconds). When both VSX devices reboot, the link-up delay timer is not used. Therefore, by configuring the linkup delay timer to include LAGs 101 and 102, which are part of the same VSX device as LAG 201, you can ensure that both devices have enough time to synchronize their databases and form routing adjacencies before bringing down their downstream links.

• Question 78:

  A customer wants to enable wired authentication across all their CX switches One of the requirements is that the switch must be able to authenticate a single computer connected through a VoIP phone.

  Which feature should be enabled to support this requirement?

  A. Multi-Domain Authentication
  B. Device-Based Mode
  C. MAC Authentication
  D. Multi-Auth Mode
  A. Multi-Domain Authentication

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  Explanation

  Multi-Domain Authentication is the feature that should be enabled to support the requirement that the switch must be able to authenticate a single computer connected through a VoIP phone. Multi-Domain Authentication is a feature that allows an Aruba CX switch to apply different authentication methods and policies to different devices connected to the same port. For example, a VoIP phone and a computer can be connected to the same port using a single cable, but they can be authenticated separately using different credentials and assigned to different VLANs. The other options are incorrect because they either do not support multiple devices on the same port or do not provide authentication.

  References:

  https://www.arubanetworks.com/techdocs/AOS-CX/10.05/HTML/5200-7540/GUID-7D9E9F6E-5C2A-4F7E-BE6D-A2C3A6C7B9F9.htmlhttps://www.arubanetworks.com/assets/tg/TB_ArubaCX_Switching.pdf

• Question 79:

  Refer to the exhibit.

  

  In the Core-2 configuration of spanning-tree instance 2 priority 0, what needs to be configured to enable the root for VLAN 20 while VLAN 10 remains root on Core-1?

  A. Spanning-tree instance 2 VLAN 20
  B. Spanning-tree priority 0 VLAN 20
  C. Spanning-tree priority root VLAN 20
  D. Spanning-tree VLAN 20
  A. Spanning-tree instance 2 VLAN 20

• Question 80:

  DRAG DROP

  Match each PoE power class to Its corresponding 802.3 standard. (Options may he used more than once or not at all)

  Select and Place: