Note that Keith could have got his answer from google by himself and don't even need to ask. Tim could work without interruption!
People who do this in the workplace trust their colleagues and believe this is the best way to get the RIGHT answer. In most cases, yes, it is! But still, there are many searchable questions that Google, Wiki, and company docs could help. Search first before throwing out questions; it could save your and others' time.
The same goes for:
Search it first! 😫
Here are some tips to help you ask a coworker a question while being prepared:
Asking thoughtful and well-reasoned questions that demonstrate your engagement and interest will help you to gain the information you need and to be perceived as a knowledgeable and competent professional.
When done right - everyone's happy! 🎉