CFR-410 CertNexus CyberSec First Responder (CFR) Exam Free Practice Exam Questions (2025 Updated)

Isolate the services and data as much as possible: Isolation helps prevent the spread of issues across systems and makes recovery easier and more manageable.

Understand which processes are critical to the business and have to run in disaster recovery: Identifying critical processes ensures that the most essential operations are prioritized during recovery, minimizing downtime and business disruption.

Maintain integrity between primary and secondary deployments: Ensuring data integrity between primary and backup systems is essential for a successful recovery, allowing for accurate restoration of systems and data.

The full weekly backup with daily incremental backups strategy results in the shortest backup time during weekdays and uses the least amount of storage space because it only backs up data that has changed since the last backup. However, the restore time can be longer because multiple incremental backups need to be restored in sequence before the most recent data can be recovered.

Physical security measures are implemented when employees are assigned personal, unique badges to control access to physical locations, such as buildings or secure areas within an organization. These badges ensure that only authorized individuals can enter specific locations, enhancing the protection of the organization's assets and sensitive areas.

sha256sum: This tool calculates the SHA-256 hash of a file, which can be used for integrity verification by comparing the hash value with a known, trusted value.

md5sum: This tool calculates the MD5 hash of a file, which can also be used to verify its integrity by checking against a known hash value.

md5deep: This is a tool that provides recursive MD5 hash calculation, which can be useful for verifying the integrity of multiple files at once.

Single firewall: A single firewall is the simplest method for designing a DMZ network, where a firewall is placed between the internal network and the external network (internet), controlling traffic to and from the DMZ.

Dual firewall: A dual firewall setup uses two firewalls, one between the internal network and the DMZ, and the other between the DMZ and the external network. This adds an extra layer of security.

SNMP (Simple Network Management Protocol) is typically used for network management and monitoring but can be a security risk if not properly secured. SNMP can provide attackers with valuable information about network devices if exposed to the internet, which is why it is generally blocked through firewalls unless absolutely necessary and securely configured.

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Explanation

A risk assessment is the best process to identify vendors that can ensure protection and compliance with security and privacy laws. This process involves evaluating the risks associated with different vendors, assessing their ability to meet security and privacy requirements, and determining how they manage data protection. It helps to ensure that vendors adhere to relevant laws and standards, minimizing the organization's exposure to security and privacy risks.

In Linux, log entries for auditd (the audit daemon) are written to /var/log/audit/audit.log. This file contains detailed information about system activity, including security-related events, which is essential for auditing and monitoring purposes.

The NIST 800-137 framework for continuous monitoring categorizes monitoring activities into three tiers:

Tier 1: Information systems, where monitoring focuses on the status and performance of individual systems.

Tier 2: Mission/business processes, which monitor the operations and processes necessary to support organizational missions.

Tier 3: The organization, where overall strategic goals and enterprise-wide risks are assessed and managed.

A hot site is a fully equipped, operational backup site that allows a company to restore normal business operations in a matter of minutes or seconds. It has up-to-date copies of critical data and systems, ensuring minimal downtime in the event of a disaster.