Which type of switch forwards data only to the specific port needed? Learn how Layer 2 switches use MAC addresses to deliver data efficiently—essential knowledge for Cisco Certified Support Technician (CCST) Networking 100-150 exam success.
Table of Contents
Question
Which type of switch forwards data only to the specific port needed?
A. Hub
B. Unmanaged switch
C. Layer 2 switch
D. Layer 3 switch
E. Managed switch
Answer
C. Layer 2 switch
Explanation
Layer 2 switches use MAC addresses to forward data only to the intended destination port.
The type of switch that forwards data only to the specific port needed is a Layer 2 switch.
Layer 2 switches operate at the Data Link layer of the OSI model and use MAC addresses to determine the destination of each data frame.
When a frame arrives, the switch consults its MAC address table to identify which port is associated with the destination MAC address, then forwards the frame only to that port, rather than broadcasting it to all ports as a hub would.
This targeted forwarding reduces unnecessary traffic, minimizes collisions, and improves overall network efficiency and performance.
Layer 2 switches dynamically learn and update their MAC address tables as devices communicate on the network, ensuring accurate and efficient delivery of data.
In contrast, hubs broadcast data to all ports, and Layer 3 switches operate at the network layer using IP addresses for routing between networks.
Layer 2 switches use MAC address tables to forward data only to the intended destination port, providing efficient and secure data delivery within a local network.
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