HPE6-A85 Sample Questions & Answers

This statement is false. The function described—logical node-to-node addressing (IP addressing) and path determination (routing)—is the primary responsibility of the Network Layer (Layer 3). The Transport Layer (Layer 4) is responsible for process-to-process communication, segmentation, reliability (TCP), and flow control.

The best practice is to connect each access switch to both switches in the collapsed core using a multi-chassis LACP bundle (achieved with technologies like Aruba's VSX). This approach provides link and device redundancy while allowing both uplinks to be active simultaneously, doubling the available bandwidth and simplifying the Layer 2 topology by eliminating STP-blocked ports between the access and core layers.

Aruba Central is Aruba's cloud-native management platform that provides all the listed features. It is specifically designed for unified management of APs, switches, and gateways across distributed locations. It offers zero-touch provisioning (ZTP), powerful template-based configuration, and AIOps for network insights and troubleshooting. NetEdit is for switch configuration automation, ClearPass is for network access control, and AirWave is an on-premises management solution.

AOS-CX has no router-level network statement for OSPF. After the OSPF instance (router ospf 1) and its area are created, OSPF is enabled per Layer 3 interface with ip ospf area ; the interface's configured IPv4 network then participates in that area. To run OSPF only on the interfaces in 10.100.0.0/16, enter ip ospf 1 area 0 only in the contexts of those interfaces (for example interface vlan 100). ip ospf passive only stops OSPF packets on an interface that is already in OSPF; it does not select interfaces by address range.

On AOS-CX the voice VLAN feature is enabled by designating a VLAN as a voice VLAN in the VLAN context (vlan 20 -> voice; show vlan voice lists it). The phone port carries the data VLAN untagged (native VLAN) and the voice VLAN tagged. LLDP-MED advertises 'the voice VLAN configured on the interface' to the phone in its Network Policy TLV (sent only when a voice VLAN policy is present), and CDPv2 does the same for legacy Cisco phones; the phone then tags its voice traffic, which can be prioritized. LLDP-MED is the discovery/advertisement protocol, not the VLAN designation itself; port security limits MAC addresses, and native VLAN tagging (vlan trunk native tag) would force the PC's untagged frames to be dropped.

For a multi-chassis LAG (MC-LAG) to a VSX pair to work, the member links of the LAG on the downstream device must be split between the two physical switches of the VSX pair. One link connects to the primary switch, and the other link connects to the secondary switch. The VSX pair then presents a single logical device to the access switch for the LACP negotiation, allowing for an active-active, redundant connection.

The IPv6 address prefix fe80::/10 is reserved for link-local unicast addressing. These addresses are automatically configured on every IPv6-enabled interface and are used for communication only on the local network segment (link). They are not routable. The fffe in the middle of the host portion also indicates it was likely generated from a MAC address using the EUI-64 format.

A captive portal intercepts a user's web traffic and redirects them to a special web page. The primary purpose of this page is to present an Acceptable Use Policy (AUP), require authentication (e.g., social login, email, voucher code), or simply have them click a button to connect. This acts as a gateway for controlling and tracking guest access.

In Rapid Spanning Tree Protocol (RSTP), an 'Alternate' port is a port that provides a redundant, secondary path toward the root bridge. It is currently in a discarding (blocking) state to prevent a loop but is ready to transition immediately to a forwarding state if the primary path (the Root Port) fails. This is a key enhancement of RSTP over legacy STP for faster convergence.

To prioritize traffic from a specific VLAN, the first step is to classify it. An administrator would create a policy that identifies traffic belonging to VLAN 50. Then, that traffic would be marked with a higher priority value (e.g., a specific CoS or DSCP value). Subsequent queuing mechanisms on the switch will then use this marking to give the SCADA traffic preferential treatment over the lower-priority data traffic, especially during periods of congestion.