最新 [2025年04月27日]HPE7-A01試験正確解答Aruba Certified Campus Access Professional ExamのPDF問題
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質問 # 19
What steps are part of the Key Management workflow when a wireless device is roaming from AP1 to AP2? (Select two.)
- A. AP1 will cache the client's information and send it to the Key Management service
- B. The Key Management service then generates R1 keys for AP2's neighbors.
- C. The Key Management service receives a list of all AP1 s neighbors from AirMatch.
- D. A client associates and authenticates with the AP2 after roaming from AP1
- E. The Key Management service receives from AirMatch a list of all AP2's neighbors
正解：B、C
解説：
Key Management is a service that runs on Aruba Mobility Controllers (MCs) or Mobility Master (MM) to optimize roaming performance for wireless clients. Key Management works with AirMatch, a service that optimizes radio resource management for Aruba APs, to pre-generate and distribute R1 keys for neighboring APs before a client roams.
When a wireless device is roaming from AP1 to AP2, the following steps are part of the Key Management workflow:
* The client associates and authenticates with AP1 using 802.1X or PSK methods.
* The Key Management service caches the client's information and generates an R0 key for the client.
* The Key Management service receives a list of all AP1's neighbors from AirMatch.
* The Key Management service then generates R1 keys for AP1's neighbors using the R0 key and sends them to the corresponding APs.
* When the client roams to AP2, one of AP1's neighbors, it performs an 802.11r fast transition using the pre-generated R1 key without needing to re-authenticate.
質問 # 20
You need to ensure that voice traffic sent through an ArubaOS-CX switch arrives with minimal latency What is the best scheduling technology to use for this task?
- A. Strict queuing
- B. QoS shaping
- C. DWRR queuing
- D. Rate limiting
正解：A
解説：
Strict queuing is the best scheduling technology to use for voice traffic on an AOS-CX switch. Scheduling is a mechanism that determines how packets are transmitted from different queues on an egress port. Strict queuing is a scheduling method that gives the highest priority queue absolute preference over all other queues, regardless of their size or utilization. Voice traffic should be assigned to the highest priority queue and scheduled with strict queuing to ensure minimal latency and jitter. The other options are incorrect because they are either not scheduling methods or not optimal for voice traffic. Reference: 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
質問 # 21
A large retail client is looking to generate a rich set of contextual data based on the location information of wireless clients in their stores Which standard uses Round Trip Time (RTT) and Fine Time Measurements (FTM) to calculate the distance a client is from an AP?
- A. 802.11ah
- B. 802.11be
- C. 802.11V
- D. 802.11mc
正解：D
解説：
802.11mc is a standard that uses Round Trip Time (RTT) and Fine Time Measurements (FTM) to calculate the distance a client is from an AP. 802.11mc defines a protocol for exchanging FTM frames between an AP and a client, which contain timestamps that indicate when the frames were transmitted and received. By measuring the RTT of these frames, the AP or the client can estimate their distance based on the speed of light. The other options are incorrect because they either do not use RTT or FTM or do not exist as standards.References:
https://www.arubanetworks.com/assets/wp/WP_WiFi6.pdfhttps://www.arubanetworks.com/assets/ds/DS_AP510
質問 # 22
How is Multicast Transmission Optimization implemented in an HPE Aruba wireless network?
- A. The optimal rate for sending multicast frames is based on the lowest unicast rate across all associated clients.
- B. The optimal rate for sending multicast frames is based on the lowest broadcast rate across all associated clients.
- C. "The optimal rate for sending multicast frames is based on the highest broadcast rate across all associated clients
- D. When this option is enabled the minimum default rate for multicast traffic is set to 12 Mbps for 5 GHz
正解：A
質問 # 23
Which feature allows the device to remain operational when a remote link failure occurs between a Gateway cluster and a RADIUS server that is either in the cloud or a datacenter?
- A. Authentication survivability
- B. Opportunistic key caching
- C. MAC Authentication
- D. MAC caching
正解：A
解説：
Authentication survivability is a feature that allows the device to remain operational when a remote link failure occurs between a Gateway cluster and a RADIUS server that is either in the cloud or a datacenter.
Authentication survivability enables the Gateway cluster to cache successful authentication requests from the RADIUS server and use them to authenticate clients when the RADIUS server is unreachable.
Authentication survivability also allows clients to use MAC caching or MAC authentication bypass (MAB) methods to access the network when the RADIUS server is down.
References: https://www.arubanetworks.com/assets/tg/TG_AuthSurvivability.pdf
質問 # 24
Using Aruba best practices what should be enabled for visitor networks where encryption is needed but authentication is not required?
- A. Opportunistic Wireless Encryption
- B. Wi-Fi Protected Access 3 Enterprise
- C. Open Network Access
- D. Wired Equivalent Privacy
正解：A
解説：
Explanation
Opportunistic Wireless Encryption (OWE) is a feature that provides encryption for open wireless networks without requiring authentication. OWE uses an enhanced version of the 4-way handshake to establish a pairwise key between the client and the AP, which is then used to encrypt the wireless traffic using WPA2 or WPA3 protocols. OWE can be used for visitor networks where encryption is needed but authentication is not required. References: https://www.arubanetworks.com/assets/tg/TG_OWE.pdf
質問 # 25
By default, Best Effort is higher priority than which priority traffic type?
- A. Internet Control
- B. All queues
- C. Network Control
- D. Background
正解：D
解説：
This is because Best Effort traffic is all other kinds of non-detrimental traffic that are not sensitive to Quality of Service metrics (jitter, packet loss, latency). A typical example would be peer-to-peer and email applications. Background traffic is a type of traffic that is used for system maintenance or backup purposes and does not affect the performance or availability of the network. Therefore, Best Effort traffic has a higher priority than Background traffic in terms of network resources allocation and management.
質問 # 26
What is true regarding 802.11k?
- A. It considers several metrics before it determines if a client should be steered to the 5GHz band, including client RSSI
- B. It provides mechanisms for APs and clients to dynamically measure the available radio resources.
- C. It extends radio measurements to define mechanisms for wireless network management of stations
- D. It reduces roaming delay by pre-authenticating clients with multiple target APs before a client roams to an AP
正解：B
解説：
802.11k is a standard that provides mechanisms for APs and clients to dynamically measure the available radio resources in a wireless network. 802.11k defines radio resource management (RRM) functions, such as neighbor reports, link measurement, beacon reports, etc., that allow APs and clients to exchange information about the RF environment and make better roaming decisions. The other options are incorrect because they describe other standards, such as
802.11r, 802.11v, or 802.11ax.
質問 # 27
With the Aruba CX switch configuration, what is the first-hop protocol feature that is used for VSX L3 gateway as per Aruba recommendation?
- A. Active-Active VRRP
- B. VRRP
- C. SVI with vsx-sync
- D. Active Gateway
正解：D
解説：
Active Gateway is the first-hop protocol feature that is used for VSX L3 gateway as per Aruba recommendation. Active Gateway is a feature that allows both VSX peers to act as active gateways for different subnets, eliminating the need for VRRP or other first-hop redundancy protocols. Active Gateway also provides fast failover and load balancing for L3 traffic across the VSX peers. The other options are incorrect because they are either not recommended or not supported by Aruba CX VSX.
質問 # 28
The customer needs a network hardware refresh to replace an aging Aruba 5406R core switch pair using spanning tree configuration with Aruba CX 8360-32YC switches What is the benefit of VSX clustering with the new solution?
- A. dual Aruba AP LAN port connectivity for PoE redundancy
- B. dual control plane provides better resiliency
- C. faster MSTP converge processing
- D. stacked data-plane
正解：B
解説：
VSX clustering is a feature that allows two Aruba CX switches to operate as a single logical device, providing high availability, scalability, and simplified management. VSX clustering has several benefits over spanning tree configuration, such as:
* Dual control plane provides better resiliency. Unlike stacking, where switches share a single control plane, VSX switches have independent control planes that synchronize their states over an inter-switch link (ISL). This means that if oneswitch fails or reboots, the other switch can continue to operate without affecting traffic flows or network services.
* Active-active forwarding provides better performance. Unlike spanning tree, where some links are blocked to prevent loops, VSX switches use all available links for forwarding traffic, providing load balancing and increased bandwidth utilization.
* Multichassis LAG provides better redundancy. Unlike single-chassis LAG, where all member ports belong to one switch, VSX switches can form multichassis LAGs with downstream or upstream devices, where member ports are distributed across both switches. This provides link redundancy and seamless failover in case of switch or port failure.
References: https://www.arubanetworks.com/assets/tg/TG_VSX.pdf
質問 # 29
Your Aruba CX 6300 VSF stack has OSPF adjacency over SVI 10 with LAG 1 to a neighboring device The following configuration was created on the switch:
- A.
- B.
- C.
- D.
正解：B
解説：
OSPF (Open Shortest Path First) is a routing protocol that uses link-state information to calculate the best path to each destination in the network. OSPF establishes adjacencies with neighboring routers to exchange routing information and maintain a consistent view of the network topology1.
To establish an OSPF adjacency, the routers need to have some common parameters, such as the area ID, the network type, the hello interval, the dead interval, and the authentication method2. The routers also need to have a matching subnet mask on the interface that connects them3.
In this case, the Aruba CX 6300 VSF stack has an SVI (Switched Virtual Interface) on VLAN 10 with an IP address of 10.1.1.1/24 and a LAG (Link Aggregation Group) on port 1/1/1 and port 2/1/1 that connects to a neighboring device. The SVI is configured with OSPF area 0 and network type broadcast. The LAG is configured with OSPF passive mode, which means that it will not send or receive OSPF hello packets.
The neighboring device has an interface with an IP address of 10.1.1.2/24 and a LAG on port 1/0/1 and port
2/0/1 that connects to the Aruba CX 6300 VSF stack. The interface is configured with OSPF area 0 and network type broadcast.
Since the Aruba CX 6300 VSF stack and the neighboring device have the same area ID, network type, subnet mask, and default hello and dead intervals on their interfaces, they will be able to establish an OSPF adjacency over SVI 10 with LAG 1. The OSPF passivemode on the LAG will not affect the adjacency, because it only applies to the LAG interface, not the SVI interface.
質問 # 30
Refer to the exhibit.
With Core-1. what is the default value for config-revision?
- A. 1-0
- B. 0
- C. 0. 0
- D. 1
正解：B
解説：
The default value for config-revision on Core-1 is 0. Config-revision is a parameter that indicates the configuration version of a VSX pair. It is used to synchronize the configuration between the VSX peers and to detect any configuration mismatch. The config-revision value is set to 0 by default on both VSX peers and is incremented by 1 every time a configuration change is made on either peer. The other options are incorrect because they do not reflect the default value of config-revision. Reference: 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
質問 # 31
You are setting up a customer's 15 headless loT devices that do not support 802.1X..
What should you use?
- A. Multiple Pre-Shared Keys (MPSK) with WPA3-AES
- B. Clearpass with WPA3-AES
- C. Multiple Pre-Shared Keys (MPSK) Local
- D. Clearpass with WPA3-PSK
正解：C
解説：
MPSK Local is a feature that can be used to set up 15 headless IoT devices that do not support
802.1X authentication. 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 802.1X authentication, which is not supported by the IoT devices, or WPA3 encryption, which is not supported by Aruba CX switches.
質問 # 32
your customer has asked you to assign a switch management role for a new user The customer requires the user role to View switch configuration information and have access to the PUT and POST meth0ds for REST API.
Which default AOS-CX user role meets these requirements?
- A. sysops
- B. auditors
- C. helpdesk
- D. administrators
正解：D
質問 # 33
You need to create a keepalive network between two Aruba CX 8325 switches for VSX configuration How should you establish the keepalive connection?
- A. loopback 0 and OSPF area 0 in default VRF
- B. SVI, VLAN trunk allowed all on ISL in default VRF
- C. routed port in custom VRF
- D. SVI, VLAN trunk allowed all on ISL in custom VRF
正解：C
解説：
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.htmlhttps://www.aruba
質問 # 34
A company recently upgraded its campus switching infrastructure with Aruba 6300 CX switches. They have implemented 802.1X authentication on edge ports where laptop and loT devices typically connect An administrator has noticed that for PoE devices the pons are delivering the maximum wattage instead of what the device actually needs Upon connecting the loT devices, the devices request their specific required wattage through information exchange
- A. implement a classifier policy with the correct power definitions.
- B. Concerned about this waste of electricity, what should the administrator implement to solve this problem?
- C. Globally enable the QoS trust setting for LLDP and/or CDP
- D. Enable AAA authentication to exempt LLDP and/or CDP information
- E. Create device profiles with the correct power definitions.
正解：E
解説：
According to the Aruba Documentation Portal1, 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/
質問 # 35
For the Aruba CX 6400 switch, what does virtual output queueing (VOQ) implement that is different from most typical campus switches?
- A. per port ASICs
- B. large ingress packet buffers
- C. large egress packet buffers
- D. VSX
正解：B
解説：
Explanation
The Aruba CX 6400 switch is a modular switch that supports high-performance and high-density Ethernet switching for campus and data center networks. One of the features that distinguishes the Aruba CX 6400 switch from most typical campus switches is virtual output queueing (VOQ). VOQ is a technique that implements large ingress packet buffers on each port to prevent head-of-line blocking and packet loss due to congestion2. VOQ allows each port to have multiple queues for different output ports and prioritize packets based on their destination and QoS class2. VOQ enables the Aruba CX 6400 switch to achieve high throughput and low latency for various traffic types and scenarios. References: 2
https://www.arubanetworks.com/assets/ds/DS_CX6400Series.pdf
質問 # 36
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