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Aruba Certified Network Security Associate Exam Questions 61–65 (page: 14)

Updated On: 10-Feb-2026

What is a consideration for using MAC authentication (MAC-Auth) to secure a wired or wireless connection?

  1. As a Layer 2 authentication method, MAC-Auth cannot be used to authenticate devices to an external authentication server.
  2. It is very easy for hackers to spoof their MAC addresses and get around MAC authentication.
  3. MAC-Auth can add a degree of security to an open WLAN by enabling the generation of a PMK to encrypt traffic.
  4. Headless devices, such as Internet of Things (loT) devices, must be configured in advance to support MAC-Auth.

Answer(s): B

Explanation:

MAC authentication, also known as MAC-Auth, is a method used to authenticate devices based on their Media Access Control (MAC) address. It is often employed in both wired and wireless networks to grant network access based solely on the MAC address of a device.
While MAC-Auth is straightforward and doesn't require complex configuration, it has significant security limitations primarily because MAC addresses can be easily spoofed. Attackers can change the MAC address of their device to match an authorized one, thereby gaining unauthorized access to the network. This susceptibility to MAC address spoofing makes MAC-Auth a weaker security mechanism compared to more robust authentication methods like 802.1X, which involves mutual authentication and encryption protocols.



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?

  1. console
  2. file
  3. syslog
  4. buffer

Answer(s): C

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.



What does the NIST model for digital forensics define?

  1. how to define access control policies that will properly protect a company's most sensitive data and digital resources
  2. how to properly collect, examine, and analyze logs and other data, in order to use it as evidence in a security investigation
  3. which types of architecture and security policies are best equipped to help companies establish a Zero Trust Network (ZTN)
  4. which data encryption and authentication algorithms are suitable for enterprise networks in a world that is moving toward quantum computing

Answer(s): B

Explanation:

The National Institute of Standards and Technology (NIST) provides guidelines on digital forensics, which include methodologies for properly collecting, examining, and analyzing digital evidence. This framework helps ensure that digital evidence is handled in a manner that preserves its integrity and maintains its admissibility in legal proceedings:
Digital Forensics Process: This process involves steps to ensure that data collected from digital sources can be used reliably in investigations and court cases, addressing chain-of-custody issues, proper evidence handling, and detailed documentation of forensic procedures.



Your company policies require you to encrypt logs between network infrastructure devices and

Syslog servers.
What should you do to meet these requirements on an ArubaOS-CX switch?

  1. Specify the Syslog server with the TLS option and make sure the switch has a valid certificate.
  2. Specify the Syslog server with the UDP option and then add an CPsec tunnel that selects Syslog.
  3. Specify a priv key with the Syslog settings that matches a priv key on the Syslog server.
  4. Set up RadSec and then enable Syslog as a protocol carried by the RadSec tunnel.

Answer(s): A

Explanation:

To ensure secure transmission of log data over the network, particularly when dealing with sensitive or critical information, using TLS (Transport Layer Security) for encrypted communication between network devices and syslog servers is necessary:
Secure Logging Setup: When configuring an ArubaOS-CX switch to send logs securely to a Syslog server, specifying the server with the TLS option ensures that all transmitted log data is encrypted. Additionally, the switch must have a valid certificate to establish a trusted connection, preventing potential eavesdropping or tampering with the logs in transit.
Other Options:
Option B, Option C, and Option D are less accurate or applicable for directly encrypting log data between the device and Syslog server as specified in the company policies.



You need to set up Aruba network infrastructure devices for management with SNMP. The SNMP server has this SNMPv3 user configured on it: username: airwave auth algorithm: sha auth key:
fyluqp18@S!9a priv algorithm: aes priv key: 761oxaiaoeu19& What correctly describes the setup on the infrastructure device?

  1. You must configure a user with the same name and keys, but can choose algorithms that meet the device's needs.
  2. You must configure the "airwave" server as an authorized user. Then, configure a separate user for this device with its own keys.
  3. You must configure a user with the same name and algorithms, but the keys should be unique to this device.
  4. You must configure a user with exactly the same name, algorithms, and keys.

Answer(s): D

Explanation:

In SNMPv3, security is paramount and each SNMP entity (client or agent) needs to have a user with a security name (username) and optionally, a security level which determines whether authentication and encryption are used.
When configuring SNMPv3 users on network infrastructure devices, it is essential to match the username, authentication (auth) algorithm, authentication key (auth key), privacy (priv) algorithm, and privacy key (priv key) exactly as they are configured on the SNMP server to ensure successful communication.
This is because the SNMPv3 security model relies on a combination of a username and a pair of keys (authentication and privacy keys) to uniquely identify and secure communication between the agent and the manager. The keys are used to verify the integrity (auth key) and confidentiality (priv key) of the messages. Using the same algorithms ensures that the messages can be properly encrypted and decrypted on both ends.


Reference:

SNMPv3 provides for secure communication by encrypting and authenticating SNMP messages. This is defined in RFC 3414 (User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)).



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