TestOut LabSim A+ Certification Practice Exam 2025 – The All-in-One Guide to Ace Your Certification!

A switch in a network primarily serves the function of connecting multiple devices on a local area network (LAN) and facilitating communication between them by forwarding data frames based on their destination MAC addresses. By effectively creating a network bridge, a switch manages traffic by receiving incoming frames and directing them only to the appropriate devices, reducing network congestion and improving overall performance.

The role of a switch is distinct from other networking devices. For example, amplifying signals is typically the function of repeaters or signal boosters, which enhance the signal strength over long distances. Filtering traffic is more characteristic of firewalls or routers that manage data flow based on specific rules or policies. Additionally, providing a wireless access point refers to devices that allow wireless communication within a network, which is separate from the function of managing wired connections. Thus, the correct answer accurately captures the fundamental purpose of a switch in a networking environment.