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NEW QUESTION # 15
The ACME company has an AOS-CX 6200 switch stack with an uplink oversubscription ratio of 9.6:1. They are considering adding two more nodes to the stack without adding any additional uplinks due to cabling constraints One oftheir architects has expressed concerns that their critical UDP traffic from both wired and bridged AP clients will encounter packet drops.They have already applied the following configuration:
Which strategy will complement this solution to achieve their objective?
- A. edge mark lower priority TCP traffic with AF12
- B. edge mark critical UDP traffic with AF42
- C. edge mark critical UDP Traffic with CSS
- D. edge mark lower priority TCP traffic with AF11
Answer: B
Explanation:
Given that the ACME company's concern is about UDP traffic potentially encountering packet drops due to uplink oversubscription, they need a strategy that prioritizes critical UDP traffic to minimize loss.
Option D,edge mark critical UDP traffic with AF42, is the correct answer. Assured Forwarding (AF) classes provide a way to assign different levels of delivery assurance for IP packets. AF42 is typically used for traffic that requires low latency and low loss, such as voice and video, which often use UDP. Marking critical UDP traffic with AF42 will help ensure that this traffic is treated with higher priority over the network.
Option A (edge mark lower priority TCP traffic with AF12) and Option C (edge mark lower priority TCP traffic with AF11) suggest marking lower priority TCP traffic, which does not directly address the concern for critical UDP traffic.
Option B (edge mark critical UDP Traffic with CS5) suggests using Class Selector 5 for critical UDP traffic, which is also a valid approach but does not match the existing configuration that is focused on Assured Forwarding (AF) classes.
NEW QUESTION # 16
You created a new SSID with the security settings shown in the exhibit.
Some, but not all users complain that client devices are unable to connect to this SS1D. What is the reason for this?
- A. WPA3 Enterprise is not backward compatible with WPA2 Enterprise.
- B. The primary servers shared key differs from the shared key configured for this server on HPE Aruba Networking Central.
- C. The WPA3 Enterprise GCM-2S6 mode does not support transition mode.
- D. MAC authentication after a failed 802. ix authentication is not possible as the option "MAC Authentication Fall-Through" is disabled.
Answer: D
Explanation:
If some users are unable to connect to an SSID configured with WPA3-Enterprise GCM-256, and the "MAC Authentication Fall-Through" is disabled, it means that devices which fail 802.1X authentication will not attempt MAC authentication. If these client devices are configured to use MAC authentication as a backup method, they will fail to connect, explaining the issue faced by some users.
NEW QUESTION # 17
A university owns a campus with several buildings segmented into east and west wings, which are L3 separated. The east wing has 1600 APs. and the west wing has 1200 Aps. Each wing has a single gateway cluster managed by HPE Aruba Networking Central. Each cluster contains one 7210 mobility gateway The gateways are configured with DHCP relay and route all client VLANs. A new business-critical facultyreal-time application requires users to roam within wings but not across wings without disconnections or delay increments.
Which changes must the network administrator make lo successfully meet the requirement without performance degradation matching best practices? (Select two.)
- A. Replace me 7210 mobility gateway in the east wing with a pair or 9012 mobility gateways
- B. Replace the 7210 mobility gateway in the west wing with a pair of 7030 mobility gateways.
- C. Remove the DHCP relay from the gateways and enable the DHCP server instead
- D. Run L2 for all SSIDs and permit the users' VLANs in the gateway's uplinks.
- E. Add a single 7210 mobility gateway to each cluster.
Answer: D,E
Explanation:
To support a business-critical faculty real-time application that requires seamless roaming within wings without cross-wing roaming, it's essential to ensure high availability and sufficient capacity. Adding an additional 7210 mobility gateway to each cluster would provide the required redundancy and capacity.
Running L2 for all SSIDs and permitting user VLANs on gateway uplinks would facilitate the necessary traffic flow without L3 segmentation issues, thus supporting seamless roaming within each wing.
NEW QUESTION # 18
You want to configure an MTU of 9198 for a routedlag interface on a CX 6300 switch.Which configuration achieves this?
- A.
- B.
- C.
- D.
Answer: D
Explanation:
In the context of ArubaOS-CX, particularly with the 6300 series switches, setting the MTU on a routed Link Aggregation Group (LAG) interface requires theinterface lag idcommand in the configuration, specifying the LAG interface you're configuring. Theip mtucommand is then used to set the desired MTU size for that LAG.
Option A correctly shows this configuration process, where the MTU is set to 9198 for the LAG interface, in line with the requirements for routing larger frames, which could be necessary for certain applications or data flows that require jumbo frames.
The information related to the configuration of Aruba switches is consistent with the principles and guidelines found in the technical documentation for the ArubaOS-CX 6300 series switches, which emphasizes the importance of correct MTU settings for network performance and stability.
NEW QUESTION # 19
A client connecting to a tunneled open network is receiving the wrong VLAN Your customer has a gateway and has sent over a packet capture from a switch port mirror taken from the upstream switch with a packet capture from the IPsec tunnel and the GRE tunnel to help Identify the VLAN being sent from the controller to the AP.
Where will you see the VLAN assignment?
- A. VLAN tag assignment win not he captured in any of the packet captures
- B. IPsec tunnel will include the VLAN tag assignment
- C. VLAN tag assignment win be included in the port mirror
- D. The GRE tunnel will include the VLAN lag assignment
Answer: C
Explanation:
In a packet capture from an upstream switch port mirror, you would see the VLAN assignment. The port mirror captures the traffic as it is on the network, including any VLAN tags. GRE or IPsec tunnels encapsulate the original packet, including VLAN tags, but the VLAN information is not visible within the encapsulation headers.
NEW QUESTION # 20
You are testing the use of the automated port-access role configuration process using RadSec authentication over VXLAN. During your testing you observed that the RadSec connection will fan during the digital certificate exchange What would be the cause of this Issue?
- A. The RADIUS TCP packets are Being dropped and the TLS tunnel is not established.
- B. The RadSec server was defined on the switch using an IPv6 address that was unreachable
- C. Tracking mode was set to "dead-only", and the RadSec server was marked as unreachable.
- D. The switch is configured to establish a TLS connection with a proxy server, not the radius server.
Answer: A
Explanation:
During the testing of RadSec authentication over VXLAN, if the RadSec connection fails during the digital certificate exchange, it typically indicates an issue with the establishment of the TLS tunnel, which is required for RadSec's secure communication. The failure of TLS tunnel establishment can occur due to RADIUS TCP packets being dropped, preventing the secure exchange of digital certificates necessary for RadSec authentication. The other options, such as IPv6 address reachability, tracking mode settings, and proxy server misconfiguration, are not directly related to the failure of the TLS tunnel establishment during the certificate exchange process
NEW QUESTION # 21
A customer has interfering devices that are seen over the air. They contact you and ask you to configure RAPIDS to help identify interfering and rogue APs. HPE Aruba Networking Central identifies a rogue AP and displays the connected switch port.
How can HPE Aruba Networking Central identify which switch port the AP is connected to?
- A. from the AP MAC address table
- B. from the switch LLDP neighbors table
- C. device profiting on the switch
- D. from the switch MAC address table
Answer: D
Explanation:
HPE Aruba Networking Central can identify which switch port a rogue AP is connected to by using the switch's MAC address table. The MAC address table contains the associations between MAC addresses and the switch ports to which devices (including APs) are connected. When Aruba Central detects a rogue AP, it can look up the MAC address of the rogue AP in the switch's MAC address table to find the specific switch port it is connected to. This enables network administrators to quickly locate and address the rogue AP issue.
NEW QUESTION # 22
What is me recommended configuration to ensure link aggregation is consistent in a campus topology using VSX with two aggregation switches and downlinks to access switches?
- A. Use a custom LACP hash algorithm for improved load Balancing.
- B. Use the command "vsx-sync mclag-interfaces" under the VSX context.
- C. Use the command "vsx-sync active-gateways" under the VSX context.
- D. Keep the MTU values at the default setting for GRE and VXLAN communications
Answer: B
Explanation:
When configuring Virtual Switching Extension (VSX) in a campus topology for link aggregation across two aggregation switches, it is important to synchronize Multi-Chassis Link Aggregation Group (MC-LAG) interfaces. The command "vsx-sync mclag-interfaces" ensures that the state and configuration of MC-LAG interfaces are synchronized between the two VSX-linked switches,providing consistent link aggregation and preventing any loops or mismatched configurations that might occur if the interfaces were not in sync.
NEW QUESTION # 23
Based on best practices if an SSID is configured Tor a primary and secondary gateway cluster with cluster preemption enabled, which will decide if the APs move to the secondary gateway cluster if all of the nodes in the primary gateway cluster are down?
- A. cluster leader in the primary gateway cluster
- B. cluster leader in the secondary gateway cluster
- C. tunnel orchestrator for LAN tunnel service in HPE Aruba Networking Central
- D. every AP individually
Answer: D
Explanation:
In an Aruba network, if an SSID is configured for a primary and secondary gateway cluster with cluster preemption enabled, each AP individually will decide to move to the secondary gateway cluster if all of the nodes in the primary gateway cluster are down. This decentralized decision-making process enhances network resilience and ensures uninterrupted service for clients connected to the APs.
NEW QUESTION # 24
A customer's infrastructure is set up to use both primary and secondary gateway clusters on the SSID profile cased on best practices. Why do they have an equal split of their 120 APs across the primary and secondary gateway clusters?
- A. The secondary gateway cluster is a homogeneous cluster with six nodes.
- B. The primary and secondary gateway clusters are up. but the cluster preemption Is not enabled
- C. The primary and secondary gateway clusters are up. and the cluster preemption is enabled
- D. The primary gateway cluster is a heterogeneous cluster with six nodes.
Answer: B
Explanation:
When cluster preemption is not enabled, access points (APs) will not automatically fail back to the primary gateway cluster once it is up again after having failed over to the secondary. This would result in an equal split of APs across primary and secondary clusters if both clusters are operational. Without preemption, there's no automatic rebalancing of APs back to the primary cluster, leading to the current distribution.
NEW QUESTION # 25
Which data transmission method provides the most efficient use of airtime for VoIP traffic?
- A. TWT
- B. MU-MIMO
- C. FDMA
- D. OFDM
Answer: B
Explanation:
MU-MIMO (Multi-User, Multiple Input, Multiple Output) provides the most efficient use of airtime for VoIP traffic among the options listed. MU-MIMO allows multiple users to receive multiple data streams simultaneously, improving the overall efficiency of the network, especially in dense environments where VoIP applications need consistent and reliable connectivity.
NEW QUESTION # 26
A customer's infrastructure is set up to use Doth primary and secondary gateway clusters on the SSID profile What is a valid reason for the AP to failover to the secondary gateway cluster?
- A. The secondary gateway cluster is heterogeneous.
- B. The secondary gateway cluster is up. hut the AP is unable to reach the secondary gateway cluster
- C. The secondary gateway cluster is homogeneous.
- D. The primary gateway cluster is up. out the AP is unable to reach the primary gateway cluster.
Answer: D
Explanation:
In Aruba's infrastructure, the Access Points (APs) are configured with primary and secondary gateway clusters to ensure connectivity and resiliency. The APs will failover to the secondary gateway cluster if they are unable to reach the primary gateway cluster, even if the primary cluster is operational. This mechanism ensures that the APs maintain connectivity to the network infrastructure for continuous service delivery.
NEW QUESTION # 27
A customer would like to allow their IT Helpdesk to configure loT devices to connect lo a single SSID using a unique PSK that other devices cannot use. Which solution would you recommend?
- A. MPSK AES with ClearPass
- B. MPSK Local
- C. MPSK AES with MAC Auth
- D. MPSK AES with Cloud Auth
Answer: A
Explanation:
Multi-Pre-Shared Key (MPSK) with ClearPass is the recommended solution for a scenario where the IT Helpdesk needs to configure IoT devices to connect to a single SSID using unique PSKs. MPSK allows for the use of different PSKs on the same SSID, and ClearPass enables the management of these unique keys efficiently.
NEW QUESTION # 28
A customer is planning to add loT devices that connect wirelessly to the existing 802.1X SSlD. The customer will use ClearPass to authenticate the IoT devices by MAC address but other devices will still need to authenticate by only 802 1X Exhibit.
The customer provided the current configuration and reported their non-loT 802. IX devices are no longer able to connect. Which configuration change can be made to fix the issue?
- A. Modify opmode wpa3-aes-gcm-256 to opmode wpa2-aes
- B. Add i2-autn-fairtnrougn to the WLAN configuration
- C. Remove mac-authentication from the WLAN configuration
- D. Modify max-authentication failures to 0.
Answer: C
Explanation:
The existing configuration for the WLAN ssid-profile has enabled MAC authentication which, while suitable for IoT devices that may not support 802.1X, can interfere with the normal 802.1X authentication process for other devices. By removing themac-authenticationdirective from the WLAN configuration, the non-IoT
802.1X devices should be able to connect without issues as the authentication process will not be disrupted by MAC authentication checks. This adjustment ensures that the WLAN ssid-profile is correctly aligned with the authentication requirements for both IoT and non-IoT devices within the network environment, conforming to the best practices for mixed-device WLAN configurations.
NEW QUESTION # 29
A BGP routing tablecontains multiple routes to the same destination prefix.
Referring to the table below whichroutewould be marked with a ">" symbol?
- A. Option D
- B. Option B
- C. Option A
- D. Option E
- E. Option C
Answer: D
Explanation:
In BGP, the route marked with a ">" symbol is the best route that is chosen based on BGP attributes in the following order: highest weight (Cisco-specific), highest local preference, originated by BGP running on the local router, shortest AS path, lowest origin type, lowest MED, eBGP over iBGP, closest IGP neighbor, and lowest BGP router ID. Based on the table provided, Option E would be marked with a ">" symbol as it has the highest local preference of 100 which is a decisive factor in the BGP best path selection process.
NEW QUESTION # 30
What directly affects the MCS used by wireless stations? (Select two.)
- A. retry rate
- B. SNR
- C. frequency band
- D. channel utilization
- E. number of connected clients
Answer: B,C
Explanation:
The Modulation and Coding Scheme (MCS) used by wireless stations is directly affected by the signal-to-noise ratio (SNR) and the frequency band. Higher SNR can lead to higher MCS values, which means better data rates. The frequency band can affect MCS due to different channel characteristics, such as the presence of interference and propagation properties, which are factors in determining data rates.
NEW QUESTION # 31
Exhibit.
What is me expected behavior for ARP traffic sent from H1?
- A. A2 will drop the ARP traffic.
- B. A2 willflood the ARP traffic out of all interfaces.
- C. A2 will send the ARP traffic out of ports 1/1/1-1/1/4.
- D. A2 willsend the ARP traffic out of ports 1/1/1 and 1/1/3.
Answer: B
Explanation:
In a VXLAN environment, unknown unicast traffic, such as ARP requests from H1, which does not have a specific destination MAC address learned by the switch A2, will be flooded out of all interfaces. This flooding behavior is necessary because A2 needs to ensure that the ARP requestreaches its intended destination, which might be on any of the interfaces. It's a part of the standard behavior of switches to handle ARP traffic when the destination hardware address is unknown.
NEW QUESTION # 32
A network technician racked up two 9240 mobility gateways in a single cluster that will be terminating 1700 APs in a medium-sized branch office Next, the technician cabled the gateways with two SFP28 Direct Attach Copper (DAC) cables, distributed between a two-member core switching stack and powered them up.
What must the network administrator do next regarding the gateway configuration to ensure maximum wired bandwidth utilization?
- A. Make an ports trunk interfaces and permit data VLANs
- B. Map two physical ports to a port channel on each gateway.
- C. Manually set 25Gbps speeds on all ports.
- D. Disable the spanning tree and allocate unique VLANs to each port.
Answer: B
Explanation:
To maximize wired bandwidth utilization, especially when multiple APs are terminating on mobility gateways, it's best practice to aggregate physical ports into a port channel. This provides redundancy and increased bandwidth by combining the throughput of multiple ports.
NEW QUESTION # 33
A deployment using AP-635S is connectedto a stack of CX 6300s as shown.
The output of the snow LACPinterfaces shews the following:
What is causing this issue?
- A. The AP is configured with LACP active
- B. Spanning tree and loop protect are enabled on both AP uplink ports.
- C. e0 is connected to a smart rate interface, and e1 is connected to a non-smart rate interface.
- D. Each AP interface is connected to a routed-only interlace on different networks
Answer: A
Explanation:
In an Aruba deployment, if an AP's interfaces show different LACP states, it often indicates a configuration mismatch. If one interface is up and the other is blocked as shown in the output,it's likely due to both interfaces on the AP being set to LACP active mode, which is a correct setting for establishing an LACP channel with Aruba switches like the CX 6300 series.
NEW QUESTION # 34
A network administrator wants to configure an 802 1X supplicant for a wireless network that includes the following:
1. AES encryption
2. EAP-MSCHAPv2-based user and machine authentication
3. validation of server certificate in Microsoft Windows 10
The network administrator creates a WLAN profile and selects the change connection settings option Then the network administrator changes the security type to Microsoft Protected EAP (PEAP) and enables user and machine authentication under Additional Settings.
What must the network administrator do next to accomplish the task?
- A. Change default RC4 encryption for AES
- B. Enable user authentication
- C. Change the security type to Microsoft: Smart Card or other certificate.
- D. Enable server certificate validation
Answer: D
Explanation:
When configuring an 802.1X supplicant for wireless network access with Microsoft Windows 10, enabling server certificate validation is a critical step to ensure the security of the authentication process. Server certificate validation helps prevent man-in-the-middle attacks by ensuring the RADIUS server presenting the certificate is the correct server that the client expects to communicate with.
NEW QUESTION # 35
You configured a tunneled SSID with captive portal and a ClearPass Guest Self Registration workflow when testing and launching the self-registration workflow, after successful registration, the login action shows the following error:
What is the best solution to resolve this error?
- A. You need to include the root and intermediate certificates in the captive portal certificate for your access points
- B. You need to include the root and intermediate certificates in the captive portal certificate for your gateway
- C. You need to De connected to the guest SSiD while testing.
- D. You need to change the Login Address in ClearPass to securelogin arubanetworKs.com
Answer: B
Explanation:
Including the root and intermediate certificates in the captive portal certificate for the gateway will resolve the error seen during the login action after successful registration. This is necessary to ensure the SSL/TLS handshake can be completed successfully, as the client browser needs to validate the entire certificate chain.
NEW QUESTION # 36
A customer's infrastructure is set up to use both primary and secondary gateway clusters on the SSID profile based on best practices What is a valid cause tor having an equal spirt in APs connected to the primary and secondary gateway clusters?
- A. The secondary gateway cluster is homogeneous
- B. The primary gateway cluster is up. out some APs cannot reach the secondary gateway cluster. These APs would connect to the secondary gateway cluster
- C. The secondary gateway cluster is heterogeneous
- D. The primary gateway cluster is up. out some APs are unable to reach the primary gateway cluster. These APs would connect to the secondary gateway cluster
Answer: D
Explanation:
In a high availability setup where both primary and secondary gateway clusters are present, APs are typically designed to connect to the primary cluster. If the APs are equally split between the primary and secondary, this may indicate that some APs cannot reach the primary cluster due to connectivity issues or reachability constraints, thus falling back to the secondary cluster.
NEW QUESTION # 37
A customer has recently deployed a wireless system using AP-535S to provide connectivity for their employees who are responsible tor uploading large video files for review. The customer wants to use features that provide throughput gains for large data uploads.
Which feature can be enabled to meet the requirement and simultaneously allow spatially separated clients access to the channel?
- A. DL MU-MIMO
- B. Ul-TXBF
- C. UL MU-MIMO
- D. OFOMA
Answer: C
Explanation:
UL MU-MIMO, or Uplink Multi-User Multiple Input Multiple Output, is a technology that allows multiple clients to transmit data to the access point simultaneously, increasing overall throughput and efficiency, especially for upload-heavy scenarios like video file uploads. This technology enables spatially separated clients to access the channel at the same time, which can improve performance for clients when uploading large files.
NEW QUESTION # 38
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