CCNA Questions on Switching

CCNA Questions on Switching

Switching is a fundamental concept in networking, and understanding it is crucial for anyone pursuing a Cisco Certified Network Associate (CCNA) certification. In this blog post, we will explore some relevant CCNA questions on switching to help you prepare for the exam.

Question 1: What is a switch?

A switch is a networking device that operates at the data link layer of the OSI model. It connects multiple devices in a Local Area Network (LAN) and forwards data packets between them based on their MAC addresses.

Question 2: What is the difference between a switch and a hub?

A switch operates at the data link layer and examines the destination MAC address of each incoming frame to forward it to the appropriate port. On the other hand, a hub operates at the physical layer and simply broadcasts incoming frames to all connected devices. Unlike a hub, a switch offers collision-free and full-duplex communication.

Question 3: What is a VLAN?

A VLAN (Virtual Local Area Network) is a logical segmentation of a physical LAN into multiple broadcast domains. It allows the creation of separate networks within a switch, even if the devices are connected to the same physical network. VLANs help enhance security, performance, and manageability in complex network environments.

Question 4: What is the Spanning Tree Protocol (STP)?

The Spanning Tree Protocol is a network protocol that prevents loops in a redundant network topology. It allows switches to dynamically create a loop-free logical topology, ensuring redundancy while avoiding broadcast storms and other network issues. STP elects a root bridge and calculates the shortest path to each switch to prevent loops.

Question 5: What is a MAC address table?

A MAC address table, also known as a CAM table (Content Addressable Memory), is used by a switch to store the MAC addresses of connected devices. It associates each MAC address with the corresponding switch port. The switch refers to this table to determine which port to forward incoming frames to.

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