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After completing the vulnerability scanning process and identifying serious vulnerabilities, Harry will proceed through several phases of vulnerability management to address and eradicate these vulnerabilities. The phases include:

• Mitigation: This phase involves taking steps to reduce the impact of the detected vulnerabilities. Mitigation strategies may include applying patches, adjusting configurations, or implementing compensating controls to lower the risk associated with the vulnerabilities.
• Verification: In this phase, Harry will verify that the vulnerabilities have been successfully mitigated or remediated. This typically involves re-scanning the network to ensure that the vulnerabilities are no longer present or that their risk has been sufficiently reduced.
• Remediation: This is the phase where Harry will take action to fix the vulnerabilities. Remediation can involve patching software, closing unnecessary ports, changing passwords, or other actions that directly address the identified security issues.

These phases are part of a broader vulnerability management lifecycle, which also includes assessing vulnerabilities and reassessing the network after remediation efforts to ensure continuous protection.

References: The explanation provided is based on the standard vulnerability management lifecycle, which includes assessment, prioritization, action (mitigation and remediation), reassessment, and improvement as outlined in cybersecurity resources123.

In a tree network, each node is connected in a hierarchical manner, with the root node at the top. If a main node (such as N1 or N2) fails, all the child nodes connected to it (N11, N12 for N1 and N21, N22 for N2) will be affected because the tree structure relies on the connectivity of the parent node to its children. The failure of a main node will disrupt the transmission path from the root to the child nodes, leading to a loss of connectivity for those child nodes. This is consistent with the principles of network resilience and fault tolerance as outlined in the EC-Council’s Certified Network Defender (CND) program, which emphasizes the importance of each node in maintaining the network’s overall integrity.

References: The explanation is based on the standard network topologies and fault tolerance principles covered in the EC-Council’s Certified Network Defender (CND) curriculum.

In the context of risk assessment, an incident that has a very high probability of occurring and the potential to impact almost 80% of a business is considered an extreme risk. This categorization is based on the severity of the impact and the likelihood of the event. The risk matrix, a tool used in risk assessment, helps in the classification of risks by considering both the impact and the probability of potential incidents. An event that affects such a significant portion of the business would typically necessitate immediate attention and the implementation of mitigation strategies to prevent substantial loss or damage.

References: The Certified Network Defender (CND) curriculum includes principles of risk assessment and the use of risk matrices to categorize and prioritize risks. It outlines that risks with high impact and high probability should be classified as extreme, requiring urgent action12.

The RAID level that splits data into blocks and evenly writes the data to multiple hard drives without providing data redundancy is known as RAID 0. This RAID level is also referred to as striping. It requires a minimum of two drives to set up. RAID 0 enhances performance by allowing simultaneous read and write operations across the drives, but it does not offer any fault tolerance. If one drive fails, all data in the array is lost because there is no redundancy.

References: RAID 0 is defined by its ability to increase performance by striping data across at least two drives. This information is consistent with the standards and descriptions provided in the EC-Council’s Certified Network Defender (C|ND) course materials and other authoritative sources on RAID configurations123.