VLANs are utilized on virtually every network built today. Their implementation is considered a basic requirement.
[Instructor] By default, a switch has all of its ports … in a single broadcast domain. … This means if a broadcast is sent, … it will go out to all ports … save for the one it entered on. … Following that logic, to create separate broadcast domains, … an engineer would have to use a different switch … for each domain, … which isn't practical or scalable in any real way. … This is where Virtual LANs or VLANs come in. … VLANs allow logical segmentation within a single switch. … A VLAN allows for multiple separate broadcast domains … to exist in the same switched infrastructure. … VLANs have many benefits. … They reduce the number of devices … that needlessly receive broadcasts. … They increase security by segregating networks, … and they also shrink the failure domain … so troubleshooting issues can be simpler. … Manage switches, or those that allow VLAN configuration, … generally default to having all ports configured … for the default VLAN. … In Cisco Kit this will be VLAN 1. … As a best practice, all ports should be moved …
Note: A complete overview of the exam and registration instructions can be found at https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/ccna-200-301.html.
- Network models
- Network components
- Troubleshooting the interface and cable issues
- Configuring IPv4 and IPv6 addressing
- Switching concepts
- Switching configuration
- Wireless architectures
- Wireless security
Skill Level Intermediate
Networking Foundations: IP Addressingwith Timothy Pintello2h 35m Intermediate
1. Network Fundamentals
2. Network Access
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