Router vs. switch differences?

Understanding the differences between routers and switches is paramount for individuals pursuing a "100% Job Guarantee Course" or "Job Guarantee Course" in networking, as it forms the foundation of network infrastructure design and management.
Routers and switches are both crucial networking devices, but they serve distinct functions within a network. A router operates at the network layer (Layer 3) of the OSI model and is responsible for forwarding data packets between different networks. It makes decisions based on IP addresses to determine the best path for data transmission across interconnected networks.