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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Switching | 19% | - Aruba CX switch configuration - Layer 2/Layer 3 technologies - Campus architecture design - VLANs, trunking and STP |
| Topic 2: Authentication and Authorization | 6% | - AAA concepts and operation - Access control methods |
| Topic 3: WLAN | 18% | - AP configuration and groups - Radio Frequency (RF) attributes - WLAN security and SSID setup - Roaming and mobility basics |
| Topic 4: Troubleshooting | 4% | - Troubleshooting methodologies - Common network issues resolution |
| Topic 5: Management and Monitoring | 7% | - Network monitoring tools - Aruba Central management platform - Health and performance assessment |
| Topic 6: Security | 9% | - Wired and wireless security policies - ClearPass integration basics - Security standards and concepts - ACLs and traffic filtering |
| Topic 7: Connectivity | 10% | - Infrastructure deployment principles - Foundational networking architectures |
| Topic 8: Network Stack | 7% | - TCP/IP stack concepts - OSI Model layers and architectural elements |
| Topic 9: Performance Optimization | 3% | - QoS principles and implementation |
| Topic 10: Routing | 9% | - Dynamic routing protocols - Static routing configuration - Routing topology design |
| Topic 11: Network Resiliency and Virtualization | 8% | - Virtual switching concepts - Redundancy and fault tolerance - Infrastructure device management |
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74. Frage
A network technician is using Aruba Central to troubleshoot network issues.
Which dashboard can be used to view and acknowledge issues when beginning the troubleshooting process?
Antwort: D
Begründung:
The Alerts and Events dashboard displays all types of alerts and events generated for events pertaining to device provisioning, configuration, and user management. You can use the Config icon to configure alerts and notifications for different alert categories and severities1. You can also view the alerts and events in the List view and Summary view2.
References:
1 https://www.arubanetworks.com/techdocs/central/latest/content/nms/alerts/configuring-alerts.htm
2 https://www.arubanetworks.com/techdocs/central/latest/content/nms/alerts/viewing-alerts.htm
75. Frage
What is indicated by a flashing amber global status indicator LED on an Aruba CX6200M?
Antwort: D
Begründung:
A flashing amber global status indicator LED on an Aruba CX6200M switch typically indicates that the switch has encountered a fault, but it is recoverable. This LED behavior serves as an alert to the network administrator that an issue needs to be addressed, but it does not necessarily mean that the switch is inoperable.
76. Frage
What capabilities are included in Aruba's ClearPass Policy Manager? (Choose two)
Antwort: B,D
77. Frage
What is a weakness introduced into the WLAN environment when WPA2-Personal is used for security?
Antwort: C
Begründung:
The weakness introduced into WLAN environment when WPA2-Personal is used for security is that PMK Pairwise Master Key (PMK) is a key that is derived from PSK Pre-shared Key (PSK) is a key that is shared between two parties before communication begins , which are both fixed. This means that all users who know PSK can generate PMK without any authentication process. This also means that if PSK or PMK are compromised by an attacker, they can be used to decrypt all traffic encrypted with PTK Pairwise Temporal Key (PTK) is a key that is derived from PMK, ANonce Authenticator Nonce (ANonce) is a random number generated by an authenticator (a device that controls access to network resources, such as an AP), SNonce Supplicant Nonce (SNonce) is a random number generated by supplicant (a device that wants to access network resources, such as an STA), AA Authenticator Address (AA) is MAC address of authenticator, SA Supplicant Address (SA) is MAC address of supplicant using Pseudo-Random Function (PRF). PTK consists of four subkeys: KCK Key Confirmation Key (KCK) is used for message integrity check, KEK Key Encryption Key (KEK) is used for encryption key distribution, TK Temporal Key (TK) is used for data encryption, MIC Message Integrity Code (MIC) key. .
The other options are not weaknesses because:
It uses X 509 certificates generated by a Certification Authority: This option is false because WPA2-Personal does not use X 509 certificates or Certification Authority for authentication. X 509 certificates and Certification Authority are used in WPA2-Enterprise mode, which uses 802.1X and EAP Extensible Authentication Protocol (EAP) is an authentication framework that provides support for multiple authentication methods, such as passwords, certificates, tokens, or biometrics. EAP is used in wireless networks and point-to-point connections to provide secure authentication between a supplicant (a device that wants to access the network) and an authentication server (a device that verifies the credentials of the supplicant). for user authentication with a RADIUS server Remote Authentication Dial-In User Service (RADIUS) is a network protocol that provides centralized authentication, authorization, and accounting (AAA) management for users who connect and use a network service .
The Pairwise Temporal Key (PTK) is specific to each session: This option is false because PTK being specific to each session is not a weakness but a strength of WPA2-Personal. PTK being specific to each session means that it changes periodically during communication based on time or number of packets transmitted. This prevents replay attacks and increases security of data encryption.
It does not use the WPA 4-Way Handshake: This option is false because WPA2-Personal does use the WPA 4-Way Handshake for key negotiation. The WPA 4-Way Handshake is a process that allows the station and the access point to exchange ANonce and SNonce and derive PTK from PMK. The WPA 4-Way Handshake also allows the station and the access point to verify each other's PMK and confirm the installation of PTK.
78. Frage
You have physical access to an Aruba CX-Switch with unknown/lost credentials.
What are the possible steps to rebuild the credentials? (Select two.)
Antwort: A,D
Begründung:
To regain access to an Aruba CX switch when credentials are unknown or lost, one can press and hold the clear button, then power cycle the switch to reset the password. Additionally, using the boot profile 0 at the boot loader menu can be used to bypass the current startup configuration, which may include the unknown credentials.
79. Frage
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