CND 312-38 Exam Dumps

The purging technique of data destruction is aimed at making data recovery infeasible using logical methods, which directly target the data at the memory level. Overwriting is a prevalent technique for purging, where data is destroyed by being overwritten with unintelligible characters like 0s and 1s. This method ensures that the original data cannot be recovered.

References: The explanation is based on the understanding of data destruction methods, where overwriting is identified as a logical method of purging data to prevent its recovery123.

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Jorge’s situation is a classic example of the security risks posed by using default passwords and settings. When systems are set up with default credentials, they are often well-known and can be easily exploited by attackers. In this case, since Jorge did not change the login credentials that were given to him by the admin, it allowed unauthorized access to his system. This type of vulnerability is a common oversight that can lead to data breaches and unauthorized system manipulation. It is crucial for users and administrators to change default passwords to something secure and unique to prevent such vulnerabilities.

References: The information provided is consistent with best practices in network security, which emphasize the importance of changing default passwords and settings to protect against unauthorized access. This is supported by various cybersecurity sources, including the OWASP Foundation, which highlights the risks associated with insecure passwords and default credentials1. For detailed guidelines, the EC-Council’s Certified Network Defender (CND) course materials would be the authoritative source.

The Zero-trust network model is designed to ensure strict identity verification for every user or device attempting to access network resources, regardless of whether they are inside or outside the network perimeter. This model operates on the principle of “never trust, always verify,” which means that no one is trusted by default, and verification is required from everyone trying to gain access to resources on the network. On the other hand, the Castle-and-Moat model operates on the principle that once inside the network, users or devices are generally trusted. This model does not enforce strict identity verification for every user or device within the network, which is a fundamental difference from the Zero-trust model.

References: The information about the Zero-trust network model aligns with the Certified Network Defender (CND) course objectives, which include understanding various network security models and their characteristics. The Zero-trust model’s emphasis on strict identity verification is a key aspect of modern network security practices12. The Castle-and-Moat model’s approach of trusting users once they are inside the network is contrasted with the Zero-trust model in various security literature34.

The Bell-LaPadula model is an example of a Mandatory Access Control (MAC) model. It is designed to maintain the confidentiality of information by enforcing access controls based on security classification levels. This model ensures that subjects (users) with a certain clearance level cannot read data at a higher classification level (no read-up) and cannot write data to a lower classification level (no write-down), thus preventing unauthorized access and information flow not permitted by the policy.

References: The Bell-LaPadula model is a foundational concept in computer security, particularly within the context of government and military applications where data classification and confidentiality are paramount12.