HP HP Certifications HPE7-A01 Questions & Answers

• Question 61:

  You are configuring Policy Based Routing (PBR) for a subnet that will be used to test a new default route for your network Traffic originating from 10.2.250.0/24 should use a new default route to 10.1.1.253. Other non-default routes for this subnet should not be affected by this change.

  What are two parts of the solution for these requirements? (Select two.)

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  E. Option E

  Correct Answer: CE

  Explanation: Two parts of the solution for these requirements are Option C and Option E. Option C is a part of the solution because it defines a policy-based routing action list named route_test, which specifies the next hop IP address as

  10.1.1.253 for the matching traffic. This is the new default route that the user wants to use for the subnet 10.2.250.0/24. The interface null parameter indicates that the traffic will be routed to the next hop without using a specific interface1. Option E is a part of the solution because it applies the policy-based routing action list route_test to the VLAN interface 250, which has an IP address of 10.2.250.1/24. This is the subnet that the user wants to test the new default route for. The apply policy command enables policy-based routing on the interface and associates it with the action list2. Option A is not a part of the solution because it defines a policy-based routing action list named route_test, but does not specify the next hop IP address as 10.1.1.253, which is the new default route that the user wants to use. Instead, it specifies a next hop IP address of 10.1.1.254, which is different from the requirement. Option B is not a part of the solution because it defines a policy-based routing action list named route_test, but does not specify any next hop IP address at all, which is necessary for policy-based routing to work. Instead, it specifies an interface null parameter without any IP address, which is invalid. Option D is not a part of the solution because it applies the policy-based routing action list route_test to the VLAN interface 200, which has an IP address of 10.2.200.1/24. This is not the subnet that the user wants to test the new default route for, but a different subnet that should not be affected by this change.

• Question 62:

  Refer to the image.

  

  Your customer is complaining of weak Wi-Fi coverage in their office. They mention that the office on the other side of the hall has much better signal.

  What is the likely cause of this issue7

  A. The AP is a remote access point.

  B. The AP is using a directional antenna.

  C. The AP is an outdoor access point.

  D. The AP is configured in Mesh mode

  Correct Answer: B

  Explanation: The likely cause of the issue of weak Wi-Fi coverage in the office is that the AP is using a directional antenna. A directional antenna is an antenna that radiates or receives radio waves more strongly in one or more directions, creating a focused beam of signal. A directional antenna can provide better coverage and performance for a specific area, but it can also create dead zones or weak spots for other areas. The other options are incorrect because they either do not affect the Wi-Fi coverage or do not match the scenario. References: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos- solutions/wlan-rf/rf-fundamentals.htm https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos- solutions/wlan-rf/antennas.htm

• Question 63:

  Your customer is interested in hearing more about how roles can help keep consistent policy enforcement in a distributed overlay fabric.

  How would you explain this concept to them''

  A. Group Based Policy ID is applied on egress VTEP after device authentication and policy is enforced on ingress VTEP

  B. Role-based policies are tied to IP addresses which have an advantage over IP-based policies and role names are sent between VTEPs

  C. Group Based Policy ID is applied on ingress VTEP after device authentication and policy is enforced on egress VTEP

  D. Role-based policies enhance User Based Tunneling across the campus network and the policy traffic is protected with iPsec

  Correct Answer: C

  Explanation: This is the correct explanation of how roles can help keep consistent policy enforcement in a distributed overlay fabric. Roles are used to assign group based policy IDs (GBPs) to devices after they authenticate with ClearPass or a local database. GBPs are then used to tag the traffic from the devices and send them to the ingress VTEP, which applies the GBP on the VXLAN header. The egress VTEP then enforces the policy based on the GBP and the destination device. The other options are incorrect because they either do not describe the correct sequence of events or do not use the correct terms. References: https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200- 6728/bk01ch03.html https://www.arubanetworks.com/techdocs/AOS- CX/10.04/HTML/5200-6728/bk01-ch05.html

• Question 64:

  With the Aruba CX 6000 24G switch with uplinks of 1/1/25 and what does the switch do when a client port detects a loop and the do-not-disabie parameter is used?

  A. Port status will be validated once status is cleared

  B. An event log message is created.

  C. The network analytics engine is triggered.

  D. Port status led blinks in amber with 100hz.

  Correct Answer: B

  The correct answer is B. An event log message is created. The do-not-disable parameter is used to prevent the switch from disabling the port when a loop is detected by the loop-protect feature. Instead, the switch will generate an event log

  message that indicates the port number and the VLAN ID where the loop was detected. The switch will also send a trap to the SNMP manager, if configured1.

  The other options are incorrect because:

  A. Port status will not be validated once status is cleared. The port will remain enabled even if a loop is detected, unless the loop-protect action is changed to tx- disable or tx-rx-disable1.

  C. The network analytics engine will not be triggered by a loop detection. The network analytics engine is a feature that allows users to monitor and troubleshoot network issues using scripts and agents2.

  D. Port status LED will not blink in amber with 100Hz. The port status LED will indicate the normal port status, such as link speed and activity, regardless of the loop detection3.

• Question 65:

  What is a primary benefit of BSS coloring?

  A. BSS color tags improve performance by allowing clients on the same channel to share airtime.

  B. BSS color tags are applied to client devices and can reduce the threshold for interference

  C. BSS color tags are applied to Wi-Fi channels and can reduce the threshold for interference

  D. BSS color tags improve security by identifying rogue APs and removing them from the network.

  Correct Answer: C

  Explanation: BSS coloring is a mechanism that helps identify the BSS Basic Service Set. A BSS is a set of interconnected stations that can communicate with each other. BSS can be an independent BSS or infrastructure BSS. An independent BSS is an ad hoc network that does not include APs, whereas the infrastructure BSS consists of an AP and all its associated clients. on the same channel and differentiate them from other BSS on the same channel12. Each BSS is assigned a color code, which is a 6-bit value that is carried in the PHY header of the Wi-Fi frames12. By using BSS coloring, the APs and clients can reduce the threshold for interference detection and avoid unnecessary backoff or retransmissions when they detect frames from other BSS with different colors12. This can improve the spectral efficiency and throughput of the network12. The other options are incorrect because they do not describe the primary benefit of BSS coloring.

• Question 66:

  With the Aruba CX switch configuration, what is the Active Gateway feature that is used for and is unique to VSX configuration?

  A. VRRP and Active gateway are mutually exclusive on a VLAN

  B. VRID is set automatically as SVI vlan id

  C. VRIDs need to be non-overlapping with VRRP

  D. VRRP and Active Gateway can be configured on a single VLAN for interoperability

  Correct Answer: A

  Active gateway is a first hop redundancy protocol that eliminates a single point of failure. The active gateway feature is used to increase the availability of the default gateway servicing hosts on the same subnet. An active gateway improves the reliability and performance of the host network by enabling a virtual router to act as the default gateway for that network. If you have enabled active gateway, VRRP is not required3. Active gateway is similar to VRRP in that routed traffic from the VSX node is sourced from the switch interface MAC and not the virtual MAC address (VMAC). Each active gateway sends a periodic broadcast hello packet to avoid VMAC aging on the access switches. The switch views the active gateway IP as a self IP address3. Active gateway is preferable over VRRP because with VRRP traffic is still pushed over the ISL link, resulting in latency in the network3. Therefore, VRRP and active gateway are mutually exclusive on a VLAN, and answer A is correct. References: 1: Aruba Campus Access documents and learning resources 3: Active gateway over VSX - Aruba

• Question 67:

  Your manufacturing client is having installers deploy seventy headless scanners and fifty IP cameras in their warehouse These new devices do not support 802 1X authentication.

  How can HPE Aruba reduce the IT administration overhead associated with this deployment while maintaining a secure environment using MPSK?

  A. Have the installers generate keys with ClearPass Self Service Registration.

  B. Have the MPSK gateway derive the unique pre-shared keys based on the MAC OUI.

  C. Use MPSK Local to automatically provide unique pre-shared keys for devices.

  D. MPSK Local will allow the cameras to share a key and the scanners to share a different key

  Correct Answer: C

  Explanation: MPSK Local is a feature that can reduce the IT administration overhead associated with deploying devices that do not support 802.1X authentication while maintaining a secure environment. MPSK Local allows the switch to automatically generate and assign unique pre-shared keys for devices based on their MAC addresses, without requiring any configuration on the devices or an external authentication server. The other options are incorrect because they either require manual intervention by the installers or the MPSK gateway, or they do not provide unique pre-shared keys for devices. References: https://www.arubanetworks.com/techdocs/AOS-CX_10_08/UG/bk01- ch05.html https:// www.arubanetworks.com/techdocs/AOS-CX_10_08/UG/bk01-ch06.html

• Question 68:

  You must ensure the HPEAruba network you are configuring for a client is capable of plug- and-play provisioning of access points. What enables this capability?

  A. UCC Service

  B. LLDP-MED

  C. SRTP

  D. CSMA

  Correct Answer: A

  Explanation: The capability that enables plug-and-play provisioning of access points in an HPE Aruba network is the UCC Service. The UCC Service is a cloud-based service that allows the access points to automatically discover and connect

  to the Aruba Central management platform without any manual intervention. The UCC Service also provides zero-touch configuration, firmware updates, and monitoring for the access points1.

  The other options are incorrect because:

  B. LLDP-MED: LLDP-MED is a protocol that enhances the interoperability between network devices and IP phones. It does not enable plug-and-play provisioning of access points2.

  C. SRTP: SRTP is a protocol that provides encryption and authentication for voice and video traffic. It does not enable plug-and-play provisioning of access points3. D. CSMA: CSMA is a protocol that regulates how devices share a common medium, such as a wireless channel. It does not enable plug-and-play provisioning of access points.

• Question 69:

  Which statements regarding 0SPFv2 route redistribution are true for Aruba OS CX switches? (Select two.)

  A. The "redistribute connected" command will redistribute all connected routes for the switch including local loopback addresses

  B. The "redistribute ospf" command will redistribute routes from all OSPF V2 and V3 processes

  C. The "redistribute static route-map connected-routes" command will redistribute all static routes without a matching deny in the route map "connected-routes".

  D. The "redistribute connected" command will redistribute all connected routes for the switch except local loopback addresses.

  E. The "redistribute static route-map connected-routes" command will redistribute all static routes with a matching permit in the route map "connected-routes-

  Correct Answer: AE

  Explanation: These are two correct statements regarding OSPFv2 route redistribution for Aruba OS CX switches. Route redistribution is a process that allows routes from one routing protocol or source to be injected into another routing protocol or destination. OSPFv2 is a link-state routing protocol that supports route redistribution from various sources, such as connected, static, BGP, etc. The "redistribute connected" command will redistribute all connected routes for the switch, including local loopback addresses, into OSPFv2. The "redistribute static route-map connected-routes" command will redistribute all static routes that have a matching permit statement in the route map named "connected- routes" into OSPFv2. The other statements are incorrect because they either do not reflect the correct behavior of route redistribution commands or do not exist as valid commands. References: https://www.arubanetworks.com/techdocs/AOS-CX/10.04/ HTML/5200- 6728/bk01-ch02.html https://www.arubanetworks.com/techdocs/AOS- CX/10.04/HTML/5200-6728/bk01-ch03.html

• Question 70:

  In AOS 10. which session-based ACL below will only allow ping from any wired station to wireless clients but will not allow ping from wireless clients to wired stations"? The wired host ingress traffic arrives on a trusted port.

  A. ip access-list session pingFromWired any user any permit

  B. ip access-list session pingFromWired user any svc-icmp deny any any svc-icmp permit

  C. ip access-list session pingFromWired any any svc-icmp permit user any svc-icmp deny

  D. ip access-list session pingFromWired any any svc-icmp deny any user svc-icmp permit

  Correct Answer: D

  Explanation: A session-based ACL is applied to traffic entering or leaving a port or VLAN based on the direction of the session initiation. To allow ping from any wired station to wireless clients but not vice versa, a session-based ACL should be used to deny icmp echo traffic from any source to any destination, and then permit icmp echo-reply traffic from any source to user destination. The user role represents wireless clients in AOS 10. References: https://techhub.hpe.com/eginfolib/Aruba/OS-CX_10.04/5200-6692/GUID- BD3E0A5F-FE4C-4B9B-BE1D-FE7D2B9F8C3A.html https://techhub.hpe.com/eginfolib/networking/docs/arubaos-switch/security/GUID- EA0A5B3C-FE4C-4B9B-BE1D-FE7D2B9F8C3A.html