Final answer:
Relevance Search and Article Template Quick Find are the two options that can be used to search for a specific knowledge base article by number.
Step-by-step explanation:
Relevance Search and Article Template Quick Find are the two options that can be used to search for a specific knowledge base article by number. Relevance Search is a search feature that uses algorithms to find articles based on their relevance to the search terms. Article Template Quick Find allows users to quickly locate articles using specific article templates. Both options provide a complete solution for searching and locating specific knowledge base articles.