[Nov-2024] Exam HPE6-A78 New Brain Dump Professional - Real4dumps [Q39-Q63]

[Nov-2024] Exam HPE6-A78: New Brain Dump Professional - Real4dumps

Free HPE6-A78 Exam Dumps to Improve Exam Score

The Aruba Certified Network Security Associate (ACNSA) certification is a vendor-neutral certification that validates the skills and knowledge required to design, deploy, and manage secure wireless networks. Aruba Certified Network Security Associate Exam certification is designed for individuals who have a solid understanding of network security principles and the ability to implement and maintain secure network infrastructure using Aruba products. The HPE6-A78 exam is the official certification exam for the ACNSA certification.

 

NEW QUESTION # 39
You are managing an Aruba Mobility Controller (MC). What is a reason for adding a "Log Settings" definition in the ArubaOS Diagnostics > System > Log Settings page?

• A. Configuring a filter that you can apply to a defined Syslog server in order to filter events by subcategory
• B. Configuring the log facility and log format that the MC will use for forwarding logs to all Syslog servers
• C. Configuring the MC to generate logs for a particular event category and level, but only for a specific user or AP.
• D. Configuring the Syslog server settings for the server to which the MC forwards logs for a particular category and level

Answer: D

NEW QUESTION # 40

A company has added a new user group. Users in the group try to connect to the WLAN and receive errors that the connection has no Internet access. The users cannot reach any resources. The first exhibit shows the record for one of the users who cannot connect. The second exhibit shows the role to which the ArubaOS device assigned the user's client.
What is a likely problem?

• A. The clients rejected the server authentication on their side because they do not have the root CA for CPPM's RADIUS/EAP certificate.
• B. The role name that CPPM is sending does not match the role name configured on the Aru-baOS device.
• C. The ArubaOS device does not have the correct RADIUS dictionaries installed on it to under-stand the Aruba-User-Role VSA.
• D. The ArubaOS device has a server derivation rule configured on it that has overridden the role sent by CPPM.

Answer: B

Explanation:
The image indicates that there is an issue with the user role assignment, which is key to network access in ArubaOS. If the user role name sent by CPPM doesn't match any of the roles defined in the ArubaOS, then the user will be assigned a default or incorrect role that does not have the necessary permissions, thus leading to the connection errors and lack of Internet access. Ensuring that the role names are consistent between CPPM and ArubaOS can resolve this issue.

NEW QUESTION # 41
A company with 382 employees wants to deploy an open WLAN for guests. The company wants the experience to be as follows:

The company also wants to provide encryption for the network for devices mat are capable, you implement Tor the WLAN?
Which security options should

• A. WPA3-Personal and MAC-Auth
• B. Captive portal and Opportunistic Wireless Encryption (OWE) in transition mode
• C. Opportunistic Wireless Encryption (OWE) and WPA3-Personal
• D. Captive portal and WPA3-Personai

Answer: B

Explanation:
For a company that wants to deploy an open WLAN for guests with the ease of access and encryption for capable devices, using a captive portal with Opportunistic Wireless Encryption (OWE) in transition mode would be suitable. The captive portal allows for a user-friendly login page for authentication without a pre-shared key, and OWE provides encryption to protect user data without the complexities of traditional WPA or WPA2 encryption, which is ideal for guest networks. Transition mode allows devices that support OWE to use it while still allowing older or unsupported devices to connect.References:
Wi-Fi Alliance recommendations for OWE.
Best practices for guest Wi-Fi network setup.

NEW QUESTION # 42
You have detected a Rogue AP using the Security Dashboard Which two actions should you take in responding to this event? (Select two)

• A. This is a serious security event, so you should always contain the AP immediately regardless of your company's specific policies.
• B. You should receive permission before containing an AP. as this action could have legal Implications.
• C. There is no need to locate the AP If the Aruba solution is properly configured to automatically contain it.
• D. There is no need to locale the AP If you manually contain It.
• E. For forensic purposes, you should copy out logs with relevant information, such as the time mat the AP was detected and the AP's MAC address.

Answer: A,E

NEW QUESTION # 43
Refer to the exhibit.

This company has ArubaOS-Switches. The exhibit shows one access layer switch, Swllcn-2. as an example, but the campus actually has more switches. The company wants to slop any internal users from exploiting ARP What Is the proper way to configure the switches to meet these requirements?

• A. On Switch-1, enable ARP protection globally, and enable ARP protection on ail VLANs.
• B. On Switch-2, make ports connected to employee devices trusted ports for ARP protection
• C. On Swltch-2, enable DHCP snooping globally and on VLAN 201 before enabling ARP protection
• D. On Swltch-2, configure static PP-to-MAC bindings for all end-user devices on the network

Answer: D

NEW QUESTION # 44
The first exhibit shows roles on the MC, listed in alphabetic order. The second and third exhibits show the configuration for a WLAN to which a client connects. Which description of the role assigned to a user under various circumstances is correct?

• A. A user fails 802.1X authentication. The client remains connected, but is assigned the "guest" role.
• B. A user authenticates successfully with 802.1X, and the RADIUS Access-Accept includes an Aruba-User-RoleVSA set to "employeel." The client's role is "employeel."
• C. A user authenticates successfully with 802.1 X. and the RADIUS Access-Accept includes an Aruba-User-Role VSA set to "employeel." The client's role is "guest."
• D. A user authenticates successfully with 802.1X. and the RADIUS Access-Accept includes an Aruba-User-Role VSA set to "employee." The client's role is "guest."

Answer: B

Explanation:
In a WLAN setup that uses 802.1X for authentication, the role assigned to a user is determined by the result of the authentication process. When a user successfully authenticates via 802.1X, the RADIUS server may include a Vendor-Specific Attribute (VSA), such as the Aruba-User-Role, in the Access-Accept message.
This attribute specifies the role that should be assigned to the user. If the RADIUS Access-Accept message includes an Aruba-User-Role VSA set to "employee1", the client should be assigned the "employee1" role, as per the VSA, and not the default "guest" role. The "guest" role would typically be a fallback if no other role is specified or if the authentication fails.

NEW QUESTION # 45
Refer to the exhibit.

This Aruba Mobility Controller (MC) should authenticate managers who access the Web Ul to ClearPass Policy Manager (CPPM) ClearPass admins have asked you to use RADIUS and explained that the MC should accept managers' roles in Aruba-Admin-Role VSAs Which setting should you change to follow Aruba best security practices?

• A. Change the local user role to read-only
• B. Disable local authentication
• C. Change the default role to "guest-provisioning"
• D. Clear the MSCHAP check box

Answer: B

Explanation:
For following Aruba best security practices, the setting you should change is to disable local authentication.
When integrating with an external RADIUS server like ClearPass Policy Manager (CPPM) for authenticating administrative access to the Mobility Controller (MC), it is a best practice to rely on the external server rather than the local user database. This practice not only centralizes the management of user roles and access but also enhances security by leveraging CPPM's advanced authentication mechanisms.
References:
Aruba Networks official best practice documentation, which recommends centralized authentication for administrative access.
Security standards and guidelines that promote the use of external RADIUS servers for authentication purposes.

NEW QUESTION # 46

An admin has created a WLAN that uses the settings shown in the exhibits (and has not otherwise adjusted the settings in the AAA profile) A client connects to the WLAN Under which circumstances will a client receive the default role assignment?

• A. The client has attempted 802 1X authentication, but failed to maintain a reliable connection, leading to a timeout error
• B. The client has attempted 802 1X authentication, but the MC could not contact the authentication server
• C. The client has passed 802 1X authentication and the authentication server did not send an Aruba-User-Role VSA
• D. The client has passed 802 1X authentication, and the value in the Aruba-User-Role VSA matches a role on the MC

Answer: C

Explanation:
In the context of an Aruba Mobility Controller (MC) configuration, a client will receive the default role assignment if they have passed 802.1X authentication and the authentication server did not send an Aruba-User-Role Vendor Specific Attribute (VSA). The default role is assigned by the MC when a client successfully authenticates but the authentication server provides no specific role instruction. This behavior ensures that a client is not left without any role assignment, which could potentially lead to a lack of network access or access control. This default role assignment mechanism is part of Aruba's role-based access control, as documented in the ArubaOS user guide and best practices.

NEW QUESTION # 47
You have an Aruba Mobility Controller (MC). for which you are already using Aruba ClearPass Policy Manager (CPPM) to authenticate access to the Web Ul with usernames and passwords You now want to enable managers to use certificates to log in to the Web Ul CPPM will continue to act as the external server to check the names in managers' certificates and tell the MC the managers' correct rote in addition to enabling certificate authentication. what is a step that you should complete on the MC?

• A. Create a local admin account mat uses certificates in the account, specify the correct trusted CA certificate and external authentication
• B. Verify that the MC has the correct certificates, and add RadSec to the RADIUS server configuration for CPPM
• C. Verify that the MC trusts CPPM's HTTPS certificate by uploading a trusted CA certificate Also, configure a CPPM username and password on the MC
• D. install all of the managers' certificates on the MC as OCSP Responder certificates

Answer: C

Explanation:
To enable managers to use certificates to log into the Web UI of an Aruba Mobility Controller (MC), where Aruba ClearPass Policy Manager (CPPM) acts as the external server for authentication, it is essential to ensure that the MC trusts the HTTPS certificate used by CPPM. This involves uploading a trusted CA certificate to the MC that matches the one used by CPPM. Additionally, configuring a username and password for CPPM on the MC might be necessary to secure and facilitate communication between the MC and CPPM. This setup ensures that certificate-based authentication is securely validated, maintaining secure access control for the Web UI.
References:
Aruba Mobility Controller configuration guides that detail the process of setting up certificate-based authentication.
Best practices for secure authentication and certificate management in enterprise network environments.

NEW QUESTION # 48
What is a consideration for implementing wireless containment in response to unauthorized devices discovered by ArubaOS Wireless Intrusion Detection (WIP)?

• A. It is best practice to implement automatic containment of unauthorized devices to eliminate the need to locate and remove them.
• B. Wireless containment only works against unauthorized wireless devices that connect to your corporate LAN, so it does not offer protection against Interfering APs.
• C. Because wireless containment has a lower risk of targeting legitimate neighbors than wired containment, it is recommended in most use cases.
• D. Your company should consider legal implications before you enable automatic containment or implement manual containment.

Answer: D

Explanation:
When implementing wireless containment as a response to unauthorized devices, a company should consider the legal implications. Wireless containment might affect devices that are not part of the company's network and could be considered as a form of interference. This could have legal consequences, and therefore, such actions should be carefully reviewed and ideally should be performed in a targeted and controlled manner, reducing the risk of legal issues.

NEW QUESTION # 49
How can ARP be used to launch attacks?

• A. Hackers can exploit the fact that the port used for ARP must remain open and thereby gain remote access to another user's device.
• B. Hackers can use ARP to change their NIC's MAC address so they can impersonate legiti-mate users.
• C. A hacker can use ARP to claim ownership of a CA-signed certificate that actually belongs to another device.
• D. A hacker can send gratuitous ARP messages with the default gateway IP to cause devices to redirect traffic to the hacker's MAC address.

Answer: D

Explanation:
ARP (Address Resolution Protocol) can indeed be exploited to conduct various types of attacks, most notably ARP spoofing/poisoning. Gratuitous ARP is a special kind of ARP message which is used by an IP node to announce or update its IP to MAC mapping to the entire network. A hacker can abuse this by sending out gratuitous ARP messages pretending to associate the IP address of the router (default gateway) with their own MAC address. This results in traffic that was supposed to go to the router being sent to the attacker instead, thus potentially enabling the attacker to intercept, modify, or block traffic.

NEW QUESTION # 50
You have an Aruba solution with multiple Mobility Controllers (MCs) and campus APs. You want to deploy a WPA3-Enterprise WLAN and authenticate users to Aruba ClearPass Policy Manager (CPPM) with EAP-TLS.
What is a guideline for ensuring a successful deployment?

• A. Avoid enabling CNSA mode on the WLAN, which requires the internal MC RADIUS server.
• B. Educate users in selecting strong passwords with at least 8 characters.
• C. Ensure that clients trust the root CA for the MCs' Server Certificates.
• D. Deploy certificates to clients, signed by a CA that CPPM trusts.

Answer: D

Explanation:
For WPA3-Enterprise with EAP-TLS, it's crucial that clients have a trusted certificate installed for the authentication process. EAP-TLS relies on a mutual exchange of certificates for authentication. Deploying client certificates signed by a CA that CPPM trusts ensures that the ClearPass Policy Manager can verify the authenticity of the client certificates during the TLS handshake process. Trust in the root CA is typically required for the server side of the authentication process, not the client side, which is covered by the client's own certificate.

NEW QUESTION # 51
What is symmetric encryption?

• A. It simultaneously creates ciphertext and a same-size MAC.
• B. It any form of encryption mat ensures that thee ciphertext Is the same length as the plaintext.
• C. It uses the same key to encrypt plaintext as to decrypt ciphertext.
• D. It uses a Key that is double the size of the message which it encrypts.

Answer: C

NEW QUESTION # 52
What is the purpose of an Enrollment over Secure Transport (EST) server?

• A. It provides a more secure alternative to private CAs at less cost than a public CA.
• B. It helps admins to avoid expired certificates with less management effort.
• C. It provides a secure central repository for private keys associated with devices' digital certif-icates.
• D. It acts as an intermediate Certification Authority (CA) that signs end-entity certificates.

Answer: B

Explanation:
EST (Enrollment over Secure Transport) is a protocol designed to streamline the certificate management process. It enables automated and secure enrollment, renewal, and revocation of digital certificates, which significantly reduces the management overhead typically associated with digital certificates. With EST, administrators can more easily manage certificates' lifecycle, ensuring that expired certificates are promptly replaced or renewed without significant manual intervention.

NEW QUESTION # 53
Your ArubaoS solution has detected a rogue AP with Wireless intrusion Prevention (WIP). Which information about the detected radio can best help you to locate the rogue device?

• A. the match type
• B. the confidence level
• C. the detecting devices
• D. the match method

Answer: C

Explanation:
When an ArubaOS solution detects a rogue AP with Wireless Intrusion Prevention (WIP), the most crucial information that can help locate the rogue device is the detecting devices. This is because the detecting devices can provide the physical location or the network topology context where the rogue AP has been detected1.
The detecting devices are typically the Air Monitors (AMs) or Access Points (APs) in the network that have identified the rogue AP's presence. These devices can provide information such as the signal strength and the direction from which the rogue AP's signals are being received. By triangulating this information from multiple detecting devices, it becomes possible to pinpoint the physical location of the rogue AP2.
Additionally, the detecting devices can log events and alerts that can be reviewed to understand the rogue AP's behavior, such as the channels it is operating on and the potential impact on the authorized wireless network1. This information is vital for network administrators to quickly and effectively respond to the threat posed by the rogue AP.
In contrast, the match method (A) and match type relate to how the rogue AP is classified and identified by the system, which is useful for classification but not for physical location. The confidence level (D) indicates the system's certainty in the classification but does not aid in locating the device2.

NEW QUESTION # 54
You are setting up an Aruba mobility solution which includes a Mobility Master (MM), Mobility Controllers (MCs), and campus APs (CAPs) for a university. The university plans to enforce WPA2-Enterprise for all users' connections. The university wants to apply one set of access control rules to faculty users' traffic and a different set of rules to students' traffic.
What is the best approach for applying the correct rules to each group?

• A. Create two WLANs, one for faculty and one for students. Apply firewall policies with the correct rules for each group to each WLAN.
• B. Create two VLANs, one for faculty and one for students. Create one set of firewall access control rules that specify faculty IP addresses for the source and a second set of rules that specify the student IP addresses for the source. Apply the rules to the WLAN.
• C. Create two VLANs, one for faculty and one for students. Apply firewall policies with the correct rules for each group to each VLAN.
• D. Create two roles, a "faculty" role and a "student" role. Apply firewall policies with the correct rules for each group to each role.

Answer: D

Explanation:
To differentiate access control for faculty and students, the best approach is to use roles. By creating two roles - "faculty" and "student" - and applying the appropriate firewall policies to each, the university can enforce different access rules for each group. This is more efficient than managing multiple VLANs or WLANs because it allows for role-based access control, which is directly tied to user identity rather than just IP addresses or the network they are connected to.

NEW QUESTION # 55
You have an Aruba Mobility Controller (MC) that is locked in a closet. What is another step that Aruba recommends to protect the MC from unauthorized access?

• A. Set the local admin password to a long random value that is unknown or locked up securely.
• B. Change the password recovery password.
• C. Use local authentication rather than external authentication to authenticate admins.
• D. Disable local authentication of administrators entirely.

Answer: B

Explanation:
Protecting an Aruba Mobility Controller from unauthorized access involves several layers of security. One recommendation is to change the password recovery password, which is a special type of password used to recover access to the device in the event the admin password is lost. Changing this to something complex and unique adds an additional layer of security in the event the physical security of the device is compromised.

NEW QUESTION # 56
What is the purpose of an Enrollment over Secure Transport (EST) server?

• A. It provides a more secure alternative to private CAs at less cost than a public CA.
• B. It helps admins to avoid expired certificates with less management effort.
• C. It provides a secure central repository for private keys associated with devices' digital certif-icates.
• D. It acts as an intermediate Certification Authority (CA) that signs end-entity certificates.

Answer: B

NEW QUESTION # 57
You have been asked to send RADIUS debug messages from an ArubaOS-CX switch to a central SIEM server at 10.5.15.6. The server is already defined on the switch with this command: logging 10.5.6.12 You enter this command: debug radius all What is the correct debug destination?

• A. console
• B. file
• C. buffer
• D. syslog

Answer: D

Explanation:
When configuring an ArubaOS-CX switch to send RADIUS debug messages to a central SIEM server, it is important to correctly direct these debug outputs. The command debug radius all activates debugging for all RADIUS processes, capturing detailed logs about RADIUS operations. If the SIEM server is already defined on the switch for logging purposes (as indicated by the command logging 10.5.6.12), the correct destination for these debug messages to be sent to the SIEM server would be through the syslog. This ensures that all generated logs are forwarded to the centralized server specified for logging, enabling consistent log management and analysis. Using syslog as the destination leverages the existing logging setup and integrates seamlessly with the network's centralized monitoring systems.

NEW QUESTION # 58
What is one benefit of enabling Enhanced Secure mode on an ArubaOS-Switch?

• A. A self-signed certificate is automatically added to the switch trusted platform module (TPM).
• B. All interfaces have 802.1X authentication enabled on them by default.
• C. Insecure algorithms for protocol such as SSH are automatically disabled.
• D. Control Plane policing rate limits edge ports to mitigate DoS attacks on network servers.

Answer: C

Explanation:
In the context of ArubaOS-Switches, enabling Enhanced Secure mode has several benefits, one of which includes disabling insecure algorithms for protocols such as SSH. This is in line with security best practices, as older, less secure algorithms are known to be vulnerable to various types of cryptographic attacks. When Enhanced Secure mode is enabled, the switch automatically restricts the use of such algorithms, thereby enhancing the security of management access.

NEW QUESTION # 59
What is a difference between radius and TACACS+?

• A. RADIUS uses Attribute Value Pairs (AVPs) in its messages, while TACACS+ does not use them.
• B. RADIUS combines the authentication and authorization process while TACACS+ separates them.
• C. RADIUS uses TCP for Its connection protocol, while TACACS+ uses UDP tor its connection protocol.
• D. RADIUS encrypts the complete packet, white TACACS+ only offers partial encryption.

Answer: B

Explanation:
RADIUS and TACACS+ are both protocols used for networking authentication, but they handle the processes of authentication and authorization differently. RADIUS (Remote Authentication Dial-In User Service) combines authentication and authorization into a single process, whereas TACACS+ (Terminal Access Controller Access-Control System Plus) separates these processes. This separation in TACACS+ allows more flexible policy enforcement and better control over commands a user can execute. This difference is well-documented in various network security resources, including Cisco's technical documentation and security protocol manuals.

NEW QUESTION # 60
What is a guideline for deploying Aruba ClearPass Device Insight?

• A. Deploy a Device Insight Collector at every site in the corporate WAN to reduce the impact on WAN links.
• B. Make sure that Aruba devices trust the root CA certificate for the ClearPass Device Insight Analyzer's HTTPS certificate.
• C. Configure remote mirroring on access layer Aruba switches, using Device Insight Analyzer as the destination IP.
• D. For companies with multiple sites, deploy a pair of Device Insight Collectors at the HQ or the central data center.

Answer: D

Explanation:
For deploying Aruba ClearPass Device Insight effectively, especially in environments with multiple sites, it is recommended to deploy a pair of Device Insight Collectors at the headquarters or the central data center.
This deployment strategy helps in centralizing the data collection and analysis, which simplifies management and enhances performance by reducing the data load on the WAN links connecting different sites.
Centralizing the collectors at a major site or data center allows for better scalability and reliability of the network management system. This configuration also aids in achieving a more consistent and comprehensive monitoring and analysis of the devices across the network, ensuring that the security and management policies are uniformly applied. This recommendation is based on best practices for network architecture design, particularly those discussed in Aruba's deployment guides and network management strategies.

NEW QUESTION # 61
Refer to the exhibit.

Device A is establishing an HTTPS session with the Arubapedia web sue using Chrome. The Arubapedia web server sends the certificate shown in the exhibit What does the browser do as part of vacating the web server certificate?

• A. It uses the private key in the DigiCert SHA2 Secure Server CA to check the certificate's signature.
• B. It uses the public key in the DigCert root CA certificate to check the certificate signature
• C. It uses the private key in the Arubapedia web site's certificate to check that certificate's signature
• D. It uses the public key in the DigCen SHA2 Secure Server CA certificate to check the certificate's signature.

Answer: D

NEW QUESTION # 62
What is one way that WPA3-PerSonal enhances security when compared to WPA2-Personal?

• A. WPA3-Perscn3i is more secure against password leaking Because all users nave their own username and password
• B. WPA3-Personai prevents eavesdropping on other users' wireless traffic by a user who knows the passphrase for the WLAN.
• C. WPA3-Personal is more complicated to deploy because it requires a backend authentication server
• D. WPA3-Personai is more resistant to passphrase cracking Because it requires passphrases to be at least
  12 characters

Answer: B

Explanation:
WPA3-Personal enhances security over WPA2-Personal by implementing individualized data encryption.
This feature, known as Wi-Fi Enhanced Open, provides each user's session with a unique encryption key, even if they are using the same network passphrase. This prevents an authenticated user from eavesdropping on the traffic of other users on the same network, thus enhancing privacy and security.References:
Wi-Fi Alliance WPA3-Personal security improvements documentation

NEW QUESTION # 63
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