BCMSN Exam Tutorial: An Essential Guide to Switches, QoS, And Cisco’s Networking Model

Are you planning to take the Cisco CCNP BCMSN exam? If so, you’ve come to the right place! This blog post is an essential guide to switches, QoS, and Cisco’s networking model – all of which are key components of the BCMSN exam. We’ll provide you with an overview of what to expect on the exam, along with tips and tricks to help you ace the test. By the time you’re done reading this guide, you’ll be well on your way to success on the BCMSN exam.


What Is a Switch?
A switch is a networking device that connects multiple devices together in a local area network (LAN). Switches enable data to be shared quickly and securely between computers, printers, and other devices on the same network. Switches use a technology called virtual LANs (VLANs) to separate traffic and ensure that data only passes between the correct devices. This is an essential component of any modern network and plays an important role in Cisco’s network architecture.

How Do Switches Work?
Switches are one of the most common components of a computer network. They act as bridges between two or more connected devices, allowing them to exchange data and communicate with each other. Switches allow data to be sent and received faster than traditional hubs, and they provide better network security by isolating traffic from different ports. By configuring a switch properly, it is possible to improve network performance, reduce latency, and create segmented networks for better security and resource allocation.

Why Use a Switch?
Switches are an essential component of any network infrastructure, as they provide a layer of intelligence between the end devices and the core infrastructure. Switches enable users to connect multiple computers and other devices together, while allowing them to share network resources such as printers, file servers, and internet access. They also enable advanced networking functions like Quality of Service (QoS) which helps prioritize data flows for better performance and scalability. Finally, switches offer an important layer of security by controlling who can access what resources on the network.


When Should You Use a Switch?
Switches are an important part of Cisco’s networking model. They are used to connect different networks and subnets together, while also allowing each device on the network to communicate with each other. When deciding whether or not to use a switch, there are a few things to consider. First, is your network environment static or dynamic? If it is static, then a switch can provide the stability and control needed for that particular environment. On the other hand, if the environment is dynamic, then a switch may not be the best option. Additionally, think about the number of devices that need to be connected, as this will determine the size and type of switch you will need.

What Is Quality of Service (QoS)?
Quality of Service (QoS) is a set of techniques used to manage network traffic and prioritize certain types of data over others. By assigning certain types of data higher priority than others, networks are able to more efficiently utilize their available bandwidth and optimize performance. In the Cisco world, QoS allows organizations to prioritize mission-critical traffic such as voice, video, and data while controlling the impact of other traffic. With QoS, Cisco networks can be configured to provide more consistent performance and better user experience.

What Is Cisco’s Networking Model?
Cisco’s networking model is a comprehensive approach to designing, deploying, and managing enterprise networks. The model is based on the Open Systems Interconnection (OSI) model and uses several layers of protocols and devices to facilitate efficient and secure communication between devices within the network. The main components of Cisco’s networking model include the physical layer, the data link layer, the network layer, the transport layer, the application layer, and the security layer. By leveraging these layers, Cisco’s networking model provides a comprehensive approach to networking that enables users to connect devices securely and reliably.