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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Connectivity | 10% | - Foundational networking architectures - Infrastructure deployment principles |
| Topic 2: Network Resiliency and Virtualization | 8% | - Redundancy and fault tolerance - Virtual switching concepts - Infrastructure device management |
| Topic 3: Troubleshooting | 4% | - Troubleshooting methodologies - Common network issues resolution |
| Topic 4: Authentication and Authorization | 6% | - AAA concepts and operation - Access control methods |
| Topic 5: Management and Monitoring | 7% | - Health and performance assessment - Aruba Central management platform - Network monitoring tools |
| Topic 6: Routing | 9% | - Dynamic routing protocols - Routing topology design - Static routing configuration |
| Topic 7: Security | 9% | - Security standards and concepts - Wired and wireless security policies - ACLs and traffic filtering - ClearPass integration basics |
| Topic 8: WLAN | 18% | - Radio Frequency (RF) attributes - WLAN security and SSID setup - AP configuration and groups - Roaming and mobility basics |
| Topic 9: Network Stack | 7% | - OSI Model layers and architectural elements - TCP/IP stack concepts |
| Topic 10: Performance Optimization | 3% | - QoS principles and implementation |
| Topic 11: Switching | 19% | - Layer 2/Layer 3 technologies - VLANs, trunking and STP - Campus architecture design - Aruba CX switch configuration |
>> HPE6-A85 Examinations Actual Questions <<
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NEW QUESTION # 97
What is a weakness introduced into the WLAN environment when WPA2-Personal is used for security?
Answer: C
Explanation:
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 AuthenticatorNonce (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.
References: https://en.wikipedia.org/wiki/Wi-
Fi_Protected_Access#WPA_key_hierarchy_and_management https://www.cwnp.com/wp- content/uploads/pdf/WPA2.pdf
NEW QUESTION # 98
List the WPA 4-Way Handshake functions in the correct order.
Answer:
Explanation:
* Proves knowledge of the PMK
* Exchanges messages for generating PTK
* Distributes an encrypted GTK to the client
* Sets first initialization vector (IV)
NEW QUESTION # 99
What is an advantage of using Layer 2 MAC authentication?
Answer: D
Explanation:
The advantage of Layer 2 MAC authentication is that it does not require any setup or configuration on the client device. The network devices (like switches or access points) perform the authentication automatically based on the MAC address of the device when it tries to connect to the network.
NEW QUESTION # 100
After having configured the edge switch uplink as requested your colleague says that they have failed to ping the core You ask your colleague to verify the connection is plugged in and the switch is powered on They confirm that both are correct You attempt to ping the core switch and confirm that the ping is failing.
Knowing the nature of this deployment, what commands might you use to troubleshoot this issued
Answer: B
Explanation:
These commands might help troubleshoot this issue as they check various aspects of the connectivity between the edge switch and the core switch, such as Layer 3 reachability, Layer 2 adjacency, LACP configuration and status, VLAN trunking configuration, and interface status. Reference: https://www.arubanetworks.com/techdocs/AOS-CX_10_04/CLI/GUID-8F0E7E8B-0F4B-4A3C-AE7F-0F1B5A7F9C5D.html
NEW QUESTION # 101
You put in a few show commands on switches EDGE1 and CORE1 to attempt to gather information to troubleshoot the issue Use the show command output images to determine the reason for the EDGE1 uplink being down
Answer: D
Explanation:
LACP is a protocol that allows multiple physical links to be aggregated into a single logical link for increased bandwidth and redundancy. LACP must be configured on both ends of the link for it to work properly. In this case, EDGE1 has LACP configured on its uplink port-channel 1, but CORE1 does not have LACP configured on its corresponding port-channel 1. This causes a mismatch and prevents the link from coming up. Reference: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-overview/lacp.htm
NEW QUESTION # 102
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