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| Section | Weight | Objectives |
|---|---|---|
| Performance Optimization | 7% | - QoS implementation and traffic management - Network performance tuning |
| WLAN | 17% | - RF fundamentals and optimization - WLAN security and connectivity modes - WLAN architecture and AP deployment |
| Security | 9% | - Network security standards and policies - Guest access and threat mitigation - Secure access control and segmentation |
| Troubleshooting | 6% | - Performance and connectivity issue resolution - Fault isolation and troubleshooting methodologies |
| Management and Monitoring | 6% | - Automation and API usage - Aruba Central management and monitoring - Monitoring tools: SNMP, Syslog, NetFlow |
| Connectivity | 8% | - Network device deployment - Network architectures and technologies |
| Routing | 13% | - OSPF, policy-based routing implementation - Routing topologies and protocols |
| Network Resiliency and Virtualization | 8% | - Redundancy and fault tolerance mechanisms - VSX, VSF, VRF, VxLAN technologies |
| Switching | 14% | - Layer 2 / Layer 3 switching implementation - VLAN design, trunking, spanning tree - High availability at access layer |
| Network Stack | 4% | - 802.11, 802.1, and 802.3 technologies |
| Authentication and Authorization | 8% | - 802.1X, MAC authentication, ClearPass integration - AAA concepts and implementation |
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問題 #16
The administrator notices that wired guest users that have exceeded their bandwidth limit are not being disconnected Access Tracker in ClearPass indicates a disconnect CoA message is being sent to the AOS-CX switch.
An administrator has performed the following configuration
What is the most likely cause of this issue?
答案：C
解題說明：
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
問題 #17
Which of the following are common cybersecurity threats? (Select two.)
答案：A,C
問題 #18
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?
答案：D
解題說明：
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.pdf
https://www.arubanetworks.com/assets/ds/DS_AP510Series.pdf
問題 #19
Two AOS-CX switches are configured with VSX at the the Access-Aggregation layer where servers attach to them An SVI interface is configured for VLAN 10 and serves as the default gateway for VLAN 10. The ISL link between the switches fails, but the keepalive interface functions. Active gateway has been configured on the VSX switches.
What is correct about access from the servers to the Core? (Select two.)
答案：A,C
解題說明：
Explanation
These are the correct statements about access from the servers to the Core when the ISL link between the switches fails, but the keepalive interface functions. Server 1 can access the core layer via both uplinks because it is connected to VSX-A, which is still active for VLAN 10. Server 2 can also access the core layer via its uplink to VSX-B, which is still active for VLAN 10 because of Active Gateway feature. Server 1 and Server 2 can communicate with each other via the core layer because they are in the same VLAN and subnet, and their traffic can be routed through the core switches. The other statements are incorrect because they either describe scenarios that are not possible or not relevant to the question. References:
https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-
問題 #20
A network administrator is attempting to troubleshoot a connectivity issue between a group of users and a particular server The administrator needs to examine the packets over a period of time from their desktop; however, the administrator is not directly connected to the AOS-CX switch involved with the traffic flow.
What statements are correct regarding the ERSPAN session that needs to be established on an AOS-CX switch'? (Select two )
答案：C,E
解題說明：
Explanation
These are the correct statements regarding the ERSPAN session that needs to be established on an AOS-CX switch for a network administrator to examine the packets over a period of time from their desktop. ERSPAN (Encapsulated Remote Switched Port Analyzer) is a feature that allows an AOS-CX switch to mirror traffic from one or more source ports or VLANs to a remote destination IP address over a GRE (Generic Routing Encapsulation) tunnel. The destination IP address must be the IP address of the administrator's desktop, which must have a packet capture tool installed to receive and analyze the mirrored traffic. The encapsulation protocol used for ERSPAN is GRE, which adds a header to the mirrored packets with information such as source and destination IP addresses, session ID, etc. The other statements are incorrect because they either do not specify the correct destination IP address or do not use ERSPAN or GRE. References:
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
問題 #21
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