Performing a bit-by-bit backup of the hard disk using a write-blocking device is the first step to do when a forensic examination of a PC is required, but the PC has been switched off because it helps to create a forensically sound copy of the original evidence without altering or damaging it. A bit-by-bit backup, also known as a physical or raw image, is a complete copy of every bit on the hard disk, including the unallocated or deleted data. A write-blocking device is a hardware or software tool that prevents any write operations to the hard disk, such as updating timestamps or changing file attributes. Performing a bit-by-bit backup of the hard disk using a write-blocking device ensures the integrity and authenticity of the evidence and allows the forensic analysis to be conducted on the duplicate image rather than the original source. Therefore, performing a bit-by-bit backup of the hard disk using a write-blocking device is the correct answer.
References:
https://en.wikipedia.org/wiki/Computer_forensics
https://resources.infosecinstitute.com/topic/computer-forensics-forensic-analysis-examination-planning/
https://www.computer-forensics-recruiter.com/topics/examination_steps/

Using the VPN when accessing the organization's online resources is the most important thing to ensure, as it provides a secure and encrypted connection between the remote employees and the organization's network, and protects the data and systems from unauthorized access, interception, or tampering. VPNs also help to comply with the organization's security policies and standards, and to prevent data leakage or breaches.
References = CISM Review Manual 2022, page 3081; CISM Exam Content Outline, Domain 4, Knowledge Statement 4.92; CISM 2020: Remote Access Security; How to Secure Remote Workers with VPN

The primary role of an information security manager in a software development project is to assess and approve the security application architecture. The security application architecture is the design and structure of the software application that defines how the application components interact with each other and with external systems, and how the application implements the security requirements, principles, and best practices. The information security manager is responsible for ensuring that the security application architecture is aligned with the organization's information security policies, standards, and guidelines, and that it meets the business objectives, functional specifications, and user expectations. The information security manager is also responsible for reviewing and evaluating the security application architecture for its completeness, correctness, consistency, and compliance, and for identifying and resolving any security issues, risks, or gaps. The information security manager is also responsible for approving the security application architecture before the software development project proceeds to the next phase, such as coding, testing, or deployment.
References = CISM Review Manual, 16th Edition, Chapter 3: Information Security Program Development and Management, Section: Information Security Program Development, page 1581; CISM Review Questions, Answers & Explanations Manual, 10th Edition, Question 80, page 742.

The most effective way to prevent information security incidents is to implement a security awareness training program for employees. Security awareness training provides employees with the knowledge and skills they need to identify potential security threats and protect their systems from unauthorized access and malicious activity. Security awareness training also helps to ensure that employees understand their roles and responsibilities when it comes to information security, and can help to reduce the risk of information security incidents by making employees more aware of potential risks. Additionally, implementing a security information and event management (SIEM) tool, deploying a consistent incident response approach, and deploying intrusion detection tools in the network environment can also help to reduce the risk of security incidents