Free HP HPE7-A01 Practice Exam with Questions & Answers | Set: 4

The correct answers are A and D.

According to the web search results, VSX LAG is a feature that allows multiple PSKs to be used on a single SSID, providing device-specific or group-specific passphrases for enhanced security and deployment flexibility for headless IoT devices 1 . VSX LAGs span both aggregation switches and appear as one device to partner downstream or upstream devices or both when forming a LAG with the VSX pair 2 .

One of the statements that is true about VSX LAG is that the total number of configured links may not exceed 8 for the pair or 4 per switch 1 . This means that a VSX LAG across a downstream switch can have at most a total of eight member links, and a switch can have a maximum of four member links. When creating a VSX LAG, it is recommended to select an equal number of member links in each segment for load balancing 1 .

Another statement that is true about VSX LAG is that outgoing traffic is preferentially switched to local members of the LAG 2 . This means that when active forwarding and active gateway are enabled, north-south and south-north traffic bypasses the ISL link and uses the local ports on the switch. This optimizes the traffic path and reduces the load on the ISL link 2 .

The other statements are false or not relevant for VSX LAG. Outgoing traffic is not switched to a port based on a hashing algorithm, which may be either switch in the pair. This is a characteristic of MLAG (Multi-Chassis Link Aggregation), which is a different feature from VSX LAG. LAG traffic is not passed over VSX ISL links only while upgrading firmware on the switch pair. This is a scenario that may occur when performing hitless upgrades, which is a feature that allows software updates without impacting network availability. The number of VSX lags that can be configured on all 83xx and 84xx model switches is not 255, but depends on the switch model and firmware version. For example, the AOS-CX 10.04 supports up to 64 VSX lags for 8320 switches and up to 128 VSX lags for 8325 and 8400 switches.

Multicast Transmission Optimization (MTO) improves wireless multicast efficiency by allowing an Aruba AP to transmit broadcast and multicast frames at a higher data rate than the normally configured basic multicast rate. In Aruba Instant and Aruba Central WLAN configuration, the AP determines the optimized rate using the lowest unicast rate among all associated clients , ensuring that every associated client can still receive the multicast transmission reliably. Aruba Networking

Critically, Aruba documentation states that when this feature is enabled, multicast traffic can be transmitted at up to 24 Mbps . Therefore, B is the correct answer . In the documented Instant implementation, the normal default multicast transmission rates are typically much lower—1 Mbps on 2.4 GHz and 6 Mbps on 5 GHz—so MTO can substantially reduce airtime consumed by multicast traffic. Aruba Networking

Option A is incorrect because Aruba uses the lowest , not highest, unicast rate of associated clients. Option C incorrectly specifies 48 Mbps. Option D is also incorrect because MTO ' s rate-selection mechanism is based on client unicast data rates , not client latency. Aruba Networking

Study Guide Topics: WLAN Optimization, Multicast Transmission Optimization, Broadcast/Multicast Traffic, Wireless Data Rates, Aruba Instant/Central WLAN Profiles.

According to the Aruba Documentation Portal 1 , the Aruba 6300 CX switches support various features to control the PoE devices on specific ports, such as device profiles and classifier policies. These features can help reduce the power consumption and improve the performance of the PoE devices.

1 : https://www.arubanetworks.com/techdocs/AOS-CX/10.10/HTML/monitoring_6300-6400/Content/Chp_LEDs/fro-pan-led-630.htm  2 : https://www.arubanetworks.com/products/switches/6300-series/  3 : https://docs.samsungknox.com/admin/knox-manage/configure/profile/configure-profile-policies/configure-profile-policies-by-device-platform/

To establish a keepalive connection between two Aruba CX 8325 switches for VSX configuration, you need to use a routed port in custom VRF. A routed port is a physical port that acts as a layer 3 interface and does not belong to any VLAN. A custom VRF is a virtual routing and forwarding instance that provides logical separation of routing tables. By using a routed port in custom VRF, you can isolate the keepalive traffic from other traffic and prevent routing loops or conflicts. The other options are incorrect because they either do not use a routed port or do not use a custom VRF. References: https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-ch07.html https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-ch02.html

The important advantage supplied by SNMPv3 is enhanced security, including authentication and message integrity . SNMPv3 employs a User-based Security Model in which authentication protocols such as MD5 or the SHA family can validate the sender and verify that the SNMP message has not been altered during transmission. HPE Aruba specifically documents SNMPv3 authentication protocols and recommends SNMPv3 because it provides authentication and strong privacy mechanisms that are absent from SNMPv2c. Aruba Networking

SNMPv2c relies on community strings , which are transmitted without the stronger user-based authentication and privacy protections available in SNMPv3. Aruba notes that SNMPv1 and SNMPv2c community names can be transmitted in clear text, whereas SNMPv3 supports authenticated users and encrypted management traffic. Aruba Networking

Options A and B are not unique SNMPv3 advantages. 64-bit counters were introduced with SNMPv2, particularly through Counter64 objects, and GetBulk was also introduced with SNMPv2 to improve retrieval efficiency. Option C is actually characteristic of SNMPv1/v2c rather than an SNMPv3 improvement.

Consequently, the distinguishing SNMPv3 feature among the available answers is message integrity .

Study Guide Topics: SNMPv3, SNMPv2c, User-Based Security Model, Authentication, Message Integrity, Privacy/Encryption, AOS-CX Network Management.

The reason is that ClearPass OnBoard is a tool that allows you to enroll Mac computers into a ClearPass Policy Manager site using an Apple MDM push certificate. This certificate can be obtained from Apple or from a third-party PKI provider.

Apple Configurator is a tool that allows you to configure and deploy Mac computers using a GPO. This tool can also be used to enroll Mac computers into a ClearPass Policy Manager site using an Apple MDM push certificate.

Change of Authorization (CoA) is a feature that allows ClearPass Policy Manager (CPPM) to send messages to network devices such as switches to change the authorization state of a user session. CoA requires that both CPPM and the network device support this feature and have it enabled. For AOS-CX switches, CoA must be globally enabled using the command  radius-server coa enable . If CoA is not enabled on the switch, the disconnect CoA message from CPPM will be ignored and the user session will not be terminated. References: https://www.arubanetworks.com/techdocs/ClearPass/6.7/PolicyManager/index.htm#CPPM_UserGuide/Admin/ChangeOfAuthorization.htm https://techhub.hpe.com/eginfolib/Aruba/OS-CX_10.04/5200-6692/GUID-9B8F6E8F-9C7A-4F0D-AE7B-9D8E6C5B6A7F.html

This is an Aruba-recommended best practice for hardening that only applies to Aruba CX 6300 series switches with dedicated management ports. A dedicated management port is a physical port that is used exclusively for out-of-band management access to the switch. A dedicated management VRF is a virtual routing and forwarding instance that isolates the management traffic from other traffic on the switch. By creating a dedicated management VRF and assigning the management port to it, the administrator can enhance the security and performance of the management access to the switch. The other options are incorrect because they either do not apply to switches with dedicated management ports or do not follow Aruba-recommended best practices. References: https://www.arubanetworks.com/assets/ds/DS_AOS-CX.pdf https://www.arubanetworks.com/assets/tg/TB_ArubaCX_Switching.pdf

Loop protection is a feature that detects and prevents loops in layer 2 networks. Loop protection can be enabled on ports, LAGs, or VLANs. When loop protection is enabled, the switch sends periodic loop protection messages on the interface and expects to receive them back.  If a loop protection message is received back on the same interface, it indicates a loop and the switch takes an action to disable the interface or block traffic on it 3 . The loop-protect re-enable-timer command is used to configure the length of time the switch waits before re-enabling an interface that was disabled due to loop detection.  The default value is 0, which means that the interface remains disabled until manually re-enabled 3 .  To automate the process of resuming the port operational state once a loop on a client port is cleared, the loop-protect re-enable-timer command can be used with a non-zero value on the interface range that includes the client ports 3 . Therefore, answer C is correct.