1.6. Exam Essentials
Know your network topologies
Know the names and descriptions of the topologies. Be aware of the difference between physical networks—what humans see—and logical networks—what the equipment "sees."
Know the advantages and disadvantages of the topologies
It is important to know what each topology brings to the table. Knowing the various characteristics of each topology comes in handy during troubleshooting.
Understand the term virtual private network
You need to understand why and how to use a VPN between two sites.
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