Chapter 11. Perspectives on IPv4 Subnetting
Most entry-level networking jobs require you to operate and troubleshoot a network using a preexisting IP addressing and subnetting plan. The CCENT and CCNA exams assess your readiness to use preexisting IP addressing and subnetting information to perform typical operations tasks, like monitoring the network, reacting to possible problems, and troubleshooting those problems.
However, some exam questions, as well as many real-life issues at work, require that you understand the design of the network so that you can better operate the network. The process of monitoring any network requires that you continually answer the question, “Is the network working as designed?” If a problem exists, you must consider ...
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