RFCs are approved by which of the following?

The correct answer is that RFCs (Request for Comments) are typically approved by a committee, which is responsible for reviewing and endorsing the proposed standards and best practices outlined in the RFCs. This committee approach allows for a collaborative effort among experts in various fields to ensure that the content of the RFC is accurate, relevant, and useful for the broader community.

Committees are composed of knowledgeable individuals with diverse backgrounds and expertise, which enhances the quality of the RFCs. The RFC process is part of the formalization of standards within the Internet Engineering Task Force (IETF) and relevant organizations, reflecting a widely accepted consensus. This process is crucial in maintaining orderly development and improvement within technological frameworks, as it seeks to address community needs and incorporate contributions from various stakeholders.

In contrast, the other options do not align with how RFCs are approved. Managers and supervisors typically do not engage in this technical standardization process at the level required, while a Change Advisory Board (CAB) primarily deals with changes in IT services rather than the approval of RFCs as formal standards. Consequently, understanding the role of a committee aligns with the collaborative nature of creating and approving RFCs.