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VLAN

Access and trunk ports

If you intend to use VLANs in your network, you will need to configure some ports on a switch as access ports and other as trunk ports. Here is a description each port type:

  • access port – a port that can be assigned to a single VLAN. This type of interface is configured on switch ports that are connected to end devices such as workstations, printers, or access points.
  • trunk port – a port that is connected to another switch. This type of interface can carry traffic of multiple VLANs, thus enabling you to extend VLANs across your entire network. Frames are tagged by assigning a VLAN ID to each frame as they traverse between switches.

The following picture illustrates the difference:

Access and trunk ports

In the example network pictured above, the switch ports connected to workstations would be configured as access ports. The ports that connect switches together would be configured as trunk ports.

Prerequisites for 200-301

200-301 is a single exam, consisting of about 120 questions. It covers a wide range of topics, such as routing and switching, security, wireless networking, and even some programming concepts. As with other Cisco certifications, you can take it at any of the Pearson VUE certification centers.

The recommended training program that can be taken at a Cisco academy is called Implementing and Administering Cisco Solutions (CCNA). The successful completion of a training course will get you a training badge.

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