CCNA Switching and Routing Interview Questions

CCNA Switching and Routing Interview Questions

Are you preparing for a CCNA switching and routing interview? This blog post aims to help you ace your interview by providing a comprehensive list of commonly asked questions in this domain. Whether you are a networking enthusiast or a professional seeking career growth, these interview questions will test your knowledge and help you stand out from other candidates.

1. What is the difference between a switch and a router?

A switch operates at the data link layer (Layer 2) of the OSI model and forwards traffic based on MAC addresses. On the other hand, a router functions at the network layer (Layer 3) and uses IP addresses to forward traffic between different networks.

2. Explain the purpose of VLANs.

VLANs (Virtual Local Area Networks) are used to isolate traffic within a network by logically segmenting it into different broadcast domains. This improves security, network performance, and simplifies network management.

3. What is the spanning-tree protocol (STP) used for?

STP is used to prevent loops in a network by dynamically selecting the best path for traffic and blocking redundant paths. It ensures a loop-free topology, enhancing network reliability and stability.

4. How does routing differ from switching?

Routing involves forwarding data between different networks based on IP addresses, while switching is the process of forwarding data within a network based on MAC addresses. Routing is performed by routers, and switching is done by switches.

5. Explain the concept of subnetting.

Subnetting is the practice of dividing a larger network into smaller subnetworks to enhance network efficiency, security, and address management. It involves borrowing bits from the host portion of an IP address to create a subnetwork address.

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