Documentation Requirements

C.

In the given scenario, the Chief Information Security Officer (CISO) has been asked to provide documentation required to set up a business-to-business VPN between the two organizations.

A Virtual Private Network ( VPN) is used to provide a secure connection between two networks over the internet. It allows two separate networks to communicate with each other securely as if they were physically connected.

To set up a business-to-business VPN between the two organizations, the following documentation is required:

A. ISA (Interconnection Security Agreement): An ISA is a written agreement between two organizations that outlines the security requirements for the connection of their respective IT systems. It defines the technical and security requirements, roles, and responsibilities of each organization, and establishes security controls that must be implemented to ensure the confidentiality, integrity, and availability of the data being transmitted. An ISA is an essential document when setting up a business-to-business VPN.

B. BIA (Business Impact Analysis): A BIA is a process that identifies the critical business processes and systems that would be impacted in case of a disruption. It helps to identify the criticality of the data being transmitted between the two organizations, and the level of security required to protect it. While a BIA is an important document to have, it is not directly related to setting up a VPN.

C. SLA (Service Level Agreement): An SLA is a contract between two organizations that defines the level of service that one organization will provide to the other. It outlines the metrics that will be used to measure performance, the remedies available in case of non-performance, and the responsibilities of each organization. While an SLA is important for managing the relationship between the two organizations, it is not directly related to setting up a VPN.

D. RA (Risk Assessment): A Risk Assessment is a process of identifying, assessing, and prioritizing risks to the confidentiality, integrity, and availability of the data being transmitted between the two organizations. It helps to identify potential vulnerabilities and threats, and provides recommendations for mitigating those risks. While a Risk Assessment is an important step in setting up a VPN, it is not the specific documentation required for the task at hand.

Therefore, the answer to the given question is A. ISA (Interconnection Security Agreement), as it is the required documentation for setting up a business-to-business VPN between two organizations.