Understanding the Geographical Depth and Breadth
At the same time that data is being gathered and verified pertaining to what is in place and what it does, connectivity among devices should also be reviewed, to review the logical and the physical components of the network. This information might be available from existing diagrams and documentation or might need to be gathered in the field.
Important items questions to answer include the following: How are domain name system (DNS) and Dynamic Host Configuration Protocol (DHCP) being handled? Are there VPNs or VLANs in place? How are the routers configured? What protocols are in use? What types of circuits connect the offices: digital subscriber line (DSL), T1, fiber? What is the guaranteed throughput ...
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