Final answer:
A Layer 3 switch, also known as a routing switch or multilayer switch, is deployed in place of an ordinary workgroup switch when there is a need for more advanced networking functionalities. It can operate at both Layer 2 and Layer 3 of the OSI model, allowing for efficient and scalable network routing. Layer 3 switches provide advanced features like access control lists, quality of service prioritization, and support for virtual private networks.
Step-by-step explanation:
A “Layer 3” switch, also known as a routing switch or multilayer switch, is deployed in place of an ordinary workgroup switch when there is a need for more advanced networking functionalities. Unlike an ordinary workgroup switch that operates at Layer 2 of the OSI model (Data Link layer), a Layer 3 switch can operate at both Layer 2 and Layer 3.
By implementing routing protocols, a Layer 3 switch can make intelligent decisions about where to forward network traffic based on IP addresses. This allows for more efficient and scalable network routing, particularly in complex networks where multiple VLANs, subnets, or virtual networks are present.
In addition to basic switching capabilities, Layer 3 switches can provide advanced features such as access control lists (ACLs), quality of service (QoS) prioritization, and support for virtual private networks (VPNs). These features make Layer 3 switches a preferred choice for environments that require more advanced networking capabilities.