Option 2 focuses on bandwidth requirements and traffic patterns, which are crucial factors to consider in designing the network layout for efficient routing and switching in a new office building. Understanding the number of devices and users (Option 1) is important but may not directly address bandwidth needs. The physical layout (Option 3) and security measures (Option 4) are significant but are secondary considerations compared to bandwidth requirements for routing and switching efficiency.

MIME types in HTTP communication refer to identifiers that define the nature and format of a resource being transmitted. This includes information about the content type, such as text/html for HTML documents, image/jpeg for JPEG images, and application/json for JSON data. This information is crucial for web browsers and other clients to interpret and handle the received content correctly.

A router is a network device that forwards data packets between computer networks. Routers operate at the network layer (Layer 3) of the OSI model and use routing tables to determine the best path for forwarding packets. Hubs and switches operate at lower layers and have different functionalities within a network, such as connecting devices in the case of hubs or creating separate collision domains in the case of switches. A modem, while essential for connecting to the internet, does not perform the same packet-forwarding function as a router.