Cisco Switch Interview Question Answer For L2

When preparing for an interview focused on Layer 2 (L2) Cisco switches, it's essential to understand the fundamental concepts and functionalities that these devices offer. Layer 2 switches operate primarily at the data link layer of the OSI model, facilitating communication between devices on the same local area network (LAN) by using MAC addresses for packet forwarding. A common interview question might involve explaining how VLANs (Virtual Local Area Networks) work to segment network traffic, enhancing both performance and security. Candidates should be adept at discussing Spanning Tree Protocol (STP) to prevent network loops, as well as understanding how to configure and troubleshoot different switching features. Proficiency in network monitoring tools and protocols such as LLDP (Link Layer Discovery Protocol) and CDP (Cisco Discovery Protocol) is also valuable. By demonstrating a strong grasp of these concepts, candidates can effectively showcase their skills and preparedness for a role involving Cisco L2 switches.