In the current digital ecosystem, where businesses are moving towards a more integrated network infrastructure, cyber security has emerged as a necessity rather than an option. A cyber security consultant, therefore, has become a crucial asset for businesses, offering their expertise to protect sensitive data from potential cyber threats. However, choosing the right consultant for your business requires a robust understanding of your specific needs and the nature of threats you may face. Let's delve into a constructive set of questions to aid you in this selection process.

Firstly, you should inquire about their academic qualifications and professional certifications. A certified professional in Information Systems Security (CISSP), for instance, indicates that the consultant has a well-rounded knowledge of the field, as it covers various domains such as security and risk management, communication and network security, security assessment and testing, to name a few. Each certification has its unique relevance, so it's essential to understand what they represent.

Understanding a consultant's experience is the next logical step. Query about their previous assignments related to your industry. A history of serving similar organizations will be conducive to your security needs, as they would have a comprehensive understanding of industry-specific threats. They would be familiar with the nuances of your data handling processes and could quickly identify potential vulnerabilities.

The next question revolves around the consultant’s strategy for risk assessment and mitigation. It would be prudent to learn about the methods they employ, such as penetration testing or vulnerability assessments, and how they intend to use these techniques to safeguard your business. Penetration testing, for instance, is a proactive method to identify vulnerabilities by simulating a cyber-attack. In contrast, a vulnerability assessment is a more passive, but equally crucial approach, where the system is scanned for potential weaknesses.

Additionally, in the event of a successful cyber attack, it’s crucial to understand their Incident Response (IR) plan. This plan outlines the steps to take in response to a cyber incident. It's effectively a blueprint to manage the aftermath of an attack, minimizing damage and recovery time. An efficient IR plan should include steps to identify the breach, contain the damage, eradicate the threat, recover from the attack, and post-incident review.

It is also important to ask about their understanding and compliance with relevant regulations. For instance, businesses dealing with European clients need to comply with the General Data Protection Regulation (GDPR). A consultant who understands these regulations will ensure that your security strategy is not just secure, but also legally compliant.

Last but not least, an often-overlooked criterion is the consultant's communication skills. Effectiveness in this area ensures that they can not only understand your concerns but also convey complex technical matters in a comprehensible manner, and liaise with various stakeholders effectively.

In summation, the choice of a cyber security consultant requires thorough research and careful consideration. It's a decision that should take into account their qualifications, experience, strategies for risk assessment, IR planning, regulatory understanding, and communication skills. These questions offer a comprehensive approach for this process, ensuring that you choose a consultant ideally suited for your business's unique needs. Remember, the right consultant will not only protect your business but also empower it, enabling you to navigate the digital landscape with confidence and safety.