What is the primary function of a network switch?

The primary function of a network switch is to receive incoming data packets and intelligently redirect them to their appropriate destinations within a local area network (LAN). A network switch operates at the data link layer (Layer 2) of the OSI model, using MAC addresses to determine where to forward the packets. This process helps to create a more efficient network by reducing collisions and ensuring that data packets reach the correct devices quickly.

In contrast, the other options focus on different functionalities that do not align with the core purpose of a network switch. For instance, while protecting devices from power surges is important for overall network safety, it is the role of surge protectors or uninterruptible power supplies (UPS), not switches. Enhancing Wi-Fi signal strength pertains to wireless access points or range extenders rather than switches, which are typically wired devices. Lastly, while switches may temporarily store packets as they process them, their primary role is to direct traffic rather than merely act as storage devices. Thus, the ability of switches to effectively manage data traffic is why option B is the correct choice.