[Oct-2026] HPE6-A86 Dumps Full Questions - Aruba Certified Switching Associate (ACSA) Exam Study Guide
Exam Questions and Answers for HPE6-A86 Study Guide
NEW QUESTION # 13
Which of these is a configurable VLAN on a CX switch?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
The correct answer is D. 3311. HPE Aruba Networking AOS-CX documentation identifies valid VLAN IDs as being in the range of 1 to 4094 for VLAN-related configuration, including access VLANs and trunk/native VLANs. Because 3311 falls inside the valid configurable VLAN ID range, it is the only valid option listed.
Option A, 4096, is invalid because it is above the supported VLAN ID range. Option B, 0, is invalid because configurable VLAN IDs begin at 1. Option C, 32768, is far outside the supported VLAN ID range and cannot be configured as a VLAN ID on a CX switch. This question tests the standard IEEE 802.1Q VLAN ID range as applied in HPE Aruba Networking CX configuration. The supported configurable VLAN range is 1 through 4094, with VLAN 1 commonly used as the default VLAN and VLAN IDs such as 3311 available for administrator-defined VLANs.
NEW QUESTION # 14
What is a valid way to explain the benefits of HPE Aruba Networking Central?
- A. Users can schedule when HPE Aruba Networking Central upgrades are committed.
- B. SNMPv3 is used for secure polling of the switch information.
- C. The platform utilizes micro-architecture design.
- D. The switch firmware repository is provided as a central TFTP service.
Answer: A
Explanation:
Aruba Central allows administrators to schedule software and firmware upgrades, giving control over when updates are applied to network devices for minimal disruption.
NEW QUESTION # 15
A user reports that they are suddenly unable to access any network resources. A Support Technician suspects the switch port may have been automatically disabled by a security feature.
The technician needs to check if the port has been disabled due to a security violation.
Review the command output:
show port-access clients interface 1/1/8 detail
Port Access Client Status Details
Client Information
Port : 1/1/8
Status : EAP-RADIUS - Blocked by EAPoL frame
What is a useful general troubleshooting tool to view a log of such security events and authentications in chronological order?
- A. `show ip route`
- B. `show arp`
- C. `show events`
- D. `show mac-address-table`
Answer: C
NEW QUESTION # 16
You have recently configured a LAG interface between two CX switches. You have noticed congestion on one of the links and very little traffic on the other.
What should you configure to reduce the congestion?
- A. Change the LACP mode.
- B. Configure LACP fast rate.
- C. Change the hash algorithm.
- D. Configure a static lag.
Answer: C
Explanation:
Traffic imbalance in a LAG is usually caused by the hash algorithm used to distribute traffic across member links. Changing the hash algorithm to include additional fields (like ports or VLANs) can better balance the load and reduce congestion.
NEW QUESTION # 17
You are planning a 40Gbps link between two sites 35 km apart.
What type of cable will be required?
- A. Single-mode fiber
- B. UTP
- C. Multi-mode fiber
- D. ZTP
Answer: A
Explanation:
The correct answer is B. Single-mode fiber. A 35 km connection between two sites is a long-distance optical link, and single-mode fiber is the appropriate cable type for long-haul communication. HPE Aruba Networking transceiver documentation describes single-mode fiber as having a small core size and being suitable for long-haul communication because it transmits light in one mode and suffers less intermodal dispersion than multi-mode fiber. Multi-mode fiber is used for shorter-distance links inside buildings or data centers and is not the correct choice for a 35 km site-to-site connection. UTP copper cabling cannot support a
40Gbps Ethernet connection over 35 km. ZTP is Zero Touch Provisioning, not a cable type. HPE Aruba transceiver guidance also lists long-distance optical transceivers, such as 40 km single-mode fiber options, reinforcing that long-distance high-speed links require SMF rather than MMF or copper. Therefore, for a
40Gbps link between sites 35 km apart, the required cabling is single-mode fiber. ( arubanetworking.hpe.com )
NEW QUESTION # 18
A Network Operator is reviewing the Spanning Tree status on an access switch. One port, 1/1/48, which is an uplink to a distribution switch, is showing a "Blocking" state.
show spanning-tree
Spanning Tree Information
STP Enabled : Yes
Mode : RSTP
Root Bridge ID : 00:00:00:00:01:00
This Bridge ID : 00:00:00:00:02:00
Port Role State Cost Priority
- - -- - --
1/1/1 Designated Forwarding 20000 128
...
1/1/48 Alternate Blocking 20000 128
What does the "Alternate" role for port 1/1/48 in an RSTP environment signify?
- A. The port is actively forwarding traffic but is not the primary uplink.
- B. The port is disabled and cannot be used.
- C. The port has detected a BPDU guard violation and is in a shutdown state.
- D. The port provides a redundant, backup path towards the Root Bridge.
Answer: D
NEW QUESTION # 19
A Network Operator needs to configure a connection between two switches that will carry traffic for multiple VLANs (VLAN 10, 20, and 30). Which type of port configuration is required on the link between the two switches?
- A. A port with BPDU guard enabled.
- B. A trunk port.
- C. A routed port with an IP address.
- D. An access port in VLAN 10.
Answer: B
NEW QUESTION # 20
How many collision domains are shown in the diagram below?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
The correct answer is D. 6. In a switched Ethernet network, each individual switch link or switch port represents a separate collision domain. The diagram shows four end-user device links: PC-A to the VLAN 10 access switch, PC-B to the VLAN 10 access switch, PC-C to the VLAN 20 access switch, and PC-D to the VLAN 20 access switch. It also shows two uplinks from the access switches to the Layer 3 switch or routing switch that contains the SVIs for VLAN 10 and VLAN 20. That gives a total of six physical Ethernet links, and therefore six collision domains. The VLANs do not reduce this count to two; VLANs define Layer 2 broadcast domains, not collision domains. The SVIs also do not create one collision domain; they are Layer 3 gateway interfaces used for routing between VLANs. HPE Aruba Networking campus design documentation describes Layer 2 and Layer 3 switching technologies used in campus topologies, while HPE Aruba switch documentation treats physical switch ports as individual Ethernet interfaces. For this diagram, the collision- domain count is based on the physical switched links, so the answer is 6.
NEW QUESTION # 21
A switch port is up, but no traffic is being forwarded. What could be a possible reason?
- A. The port is in a blocking state due to STP
- B. The IP address is incorrect
- C. The switch is running in LACP passive mode
- D. The switch does not support VLANs
Answer: A
Explanation:
The Spanning Tree Protocol (STP) is used to prevent loops in a network by designating one active path and blocking redundant paths. If a switch port is up but no traffic is being forwarded, it's likely that the port is in a blocking state due to STP. This means that STP has determined that the port is part of a redundant path and has blocked it to avoid network loops.
NEW QUESTION # 22
Which statement about out-of-band management is true?
- A. Simpler to implement than in-band management.
- B. Provides better security and reliability than in-band management.
- C. It shares the same network path as user data.
- D. Prone to congestion issues from user network traffic.
Answer: B
Explanation:
Out-of-band management uses a separate dedicated management network, isolated from production user traffic. This improves both security and reliability because management access remains available even if the main data network experiences congestion or failures.
NEW QUESTION # 23
A customer requires a network upgrade to replace their existing access switches. The new solution must support 25G speeds to the aggregation layer, with a maximum physical space of 1U, and it must be a fixed switch solution.
Which HPE Aruba Networking CX switch model would you initially propose?
- A. CX 6100
- B. CX 6200
- C. CX 6300
- D. CX 6400
Answer: C
NEW QUESTION # 24
After testing a new HPE Aruba Networking 6200M switch deployment for a small office, you discovered that hosts in different VLANs cannot reach each other.
What do you need to configure to enable connectivity between VLANs?
- A. Configure an SVI for each VLAN.
- B. Trunk the VLANs to a Layer 2 switch.
- C. Enable inter-VLAN bridging.
- D. Enable IP forwarding on the switch.
Answer: A
Explanation:
The correct answer is A. Configure an SVI for each VLAN. Hosts in different VLANs are in different Layer 2 broadcast domains, so they cannot communicate directly through normal switching alone. To enable communication between VLANs, the switch must provide Layer 3 gateway interfaces for those VLANs. On HPE Aruba Networking CX switches, this is done with switched virtual interfaces, or SVIs, using interface vlan < VLAN-ID > and assigning an IP address to each VLAN interface. HPE Aruba Networking documentation shows Layer 3 VLAN interfaces using interface vlan with an IP address, and also refers to an SVI as the Layer 2 VLAN interface IP address used by the switch. Option B is not the best answer because simply enabling IP forwarding does not create gateway interfaces for the VLANs. Option C is incorrect because trunking VLANs to another Layer 2 switch only extends VLANs; it does not route between them.
Option D is incorrect because VLANs separate Layer 2 domains, and inter-VLAN communication requires routing, not bridging.
NEW QUESTION # 25
You are about to start the initial configuration of an HPE Aruba Networking CX 6200M switch.
How would you connect to the switch to configure the SVI static IP address?
- A. Connect using the Bluetooth adapter.
- B. Connect using the Aruba Discovery mobile app.
- C. Connect using the RJ-45 console port.
- D. Connect using the RJ-45 management port.
Answer: C
Explanation:
The correct answer is A. Connect using the RJ-45 console port. To perform initial configuration on an HPE Aruba Networking CX 6200M switch, especially when configuring an SVI static IP address for in-band management, you need direct CLI access before the switch has reachable IP connectivity. The HPE Aruba Networking CX 6200 installation documentation identifies the RJ-45 console port as the local serial console connection used for direct management. HPE Aruba Networking fundamentals documentation also explains that initial configuration can be performed through the console port or management port, while VLAN 1 static IP configuration can be used for in-band management. The RJ-45 management port is for out-of-band management, but it requires management interface IP settings to be usable remotely. The Aruba mobile app and Bluetooth adapter can help with some initial setup workflows, but the question asks how to connect to configure an SVI static IP address. The most direct and expected method is to use the console connection and configure the SVI through the CLI. ( hpe.com , arubanetworking.hpe.com )
NEW QUESTION # 26
Which of the statements describe valid AOS-CX secure management access concepts? (Select two)
- A. Role-Based Access Control (RBAC) is based on a user's group assignment.
- B. AAA services can be used in both the management VRF and the default VRF.
- C. An easy way to modify several users' access is to modify the "operators" group.
- D. AAA accounting controls what you can do once you log in to the device.
- E. Advantages of using a RADIUS server include simplicity and faster authentication operations.
Answer: A,B
NEW QUESTION # 27
A CX 6200 VSF stack is the Layer 3 gateway for a mid-sized company. Users are divided into three different subnets on VLANs 100, 200, and 300. VLAN 50 contains a management network for access points, switches, and DHCP servers.
How do the access points get an IP address using DHCP?
- A. As a response to the unicast DHCP query.
- B. As a response to the multicast DHCP query.
- C. As a response to the anycast DHCP query.
- D. As a response to the broadcast DHCP query.
Answer: D
Explanation:
The correct answer is D. As a response to the broadcast DHCP query. DHCP clients initially do not have an IP address, so they commonly use broadcast DHCP discovery/request traffic to locate a DHCP server on the local network. HPE Aruba Networking documentation for DHCP relay explains that when a DHCP client broadcasts a request, the DHCP relay agent on the switch receives the packets and forwards them to the DHCP server as unicast requests. In this scenario, the access points are in VLAN 50, and VLAN 50 also contains DHCP servers. Because the DHCP server is on the same local management VLAN as the APs, the APs can obtain addresses through the normal DHCP broadcast process within that VLAN. Anycast and multicast are not used for the basic DHCP address request in this scenario. A unicast DHCP relay message can occur between a relay agent and a DHCP server when the server is on another subnet, but the client-side DHCP discovery begins as broadcast traffic.
NEW QUESTION # 28
Which are valid methods for provisioning AOS-CX switches? (Select three)
- A. Zero-Touch Provisioning
- B. Manual provisioning
- C. Fabric Composer
- D. AirWave
- E. HPE Aruba Networking IMC
Answer: A,B,C
NEW QUESTION # 29
You are trying to verify that your HPE Aruba Networking CX switch has access to the local DNS server through the out-of-band management interface. You have run the following ping command, but there has been no response:
ping 10.1.50.11
What would explain this?
- A. You need to specify the mgmt VRF at the end of the ping command.
- B. You need to create an out-of-band management VRF first.
- C. The out-of-band management interface does not support ping.
- D. The out-of-band management interface only supports connectivity to its local subnet.
Answer: A
Explanation:
The correct answer is B. You need to specify the mgmt VRF at the end of the ping command. On HPE Aruba Networking CX switches, the out-of-band management interface uses the management VRF. If you issue a normal ping 10.1.50.11 command without specifying the management VRF, the switch attempts to send the ping using the default routing context rather than the out-of-band management interface. HPE Aruba Networking AOS-CX documentation for the ping command shows that the command supports the optional vrf < vrfname > parameter. The AOS-CX diagnostics documentation also specifically lists this as a cause of ping failure: the user intended to ping through the management VRF but forgot to add vrf mgmt to the command. The correct command would therefore be similar to ping 10.1.50.11 vrf mgmt. Option A is incorrect because the management interface can reach routed destinations if the management VRF has the proper route. Option C is incorrect because the management VRF already exists. Option D is incorrect because ping is supported.
NEW QUESTION # 30
A network administrator is troubleshooting an OSPF configuration. Two routers are connected, but they are not forming an adjacency. The administrator checks the OSPF interface configuration on one of the AOS-CX switches.
Review the configuration:
interface 1/1/1
no shutdown
ip address 10.0.0.1/24
ip ospf 1 area 0.0.0.0
ip ospf hello-interval 5
router ospf 1
router-id 1.1.1.1
The administrator confirms the neighboring router has a hello interval of 10. What is the most likely reason the OSPF adjacency is not forming?
- A. The OSPF router-id is not configured on the interface.
- B. The OSPF hello timers do not match between the two routers.
- C. The interface is missing an `ip ospf network point-to-point` command.
- D. The OSPF area is misconfigured as a backbone area.
Answer: B
NEW QUESTION # 31
You have configured the following on a Core-1 HPE Aruba Networking CX switch for primary and secondary ISP connectivity:
Core-1(config)# ip route 0.0.0.0/0 10.1.251.2
Core-1(config)# ip route 0.0.0.0/0 10.1.252.2 distance 10
The default route via 10.1.251.2 stopped working, and no failover happened. The ISP reported a broken fiber on the path of an upstream device.
In what condition should the route fail over to the 10.1.252.2 router?
- A. When uplink-failure-detection enables the 10.1.252.2 route.
- B. When the BFD session terminates on 10.1.251.2.
- C. When 10.1.251.2 is no longer in the routing table.
- D. When the default route graceful-restart timer expires.
Answer: C
NEW QUESTION # 32
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