as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create two questions related to computer networking.
user
1. what is the difference between a local area network (lan) and a wide area network (wan)?
2. what is a router and what is its purpose?
assistant