Final answer:
The major functions or activities of a job are briefly identified in the job summary section of a job description.
Step-by-step explanation:
The section of the job description where the major functions or activities are briefly identified is typically the job summary. This section provides a concise overview of the core responsibilities and duties associated with the position. It serves as a snapshot of the role for potential candidates to quickly understand the scope and key functions of the job. When reviewing a job description, one should pay close attention to what is emphasized in the responsibilities section to better prepare for possible interview questions that assess if you possess the necessary skills for the role.