Question: A link-layer switch is involved in ______________ layers of the TCP/IP protocol suite

Answer:

• A link-layer switch, also known as a network switch, operates at the Data Link layer (Layer 2) of the TCP/IP protocol suite. Its primary function is to forward frames between network devices by examining the destination MAC address of each frame and determining the appropriate port to send it out on.
• Unlike a router, a switch is not involved in higher layers of the TCP/IP protocol suite such as the Network, Transport, or Application layers. However, switches are crucial components of local area networks (LANs) as they provide high-speed and efficient communication between devices within the same network segment.