December 2024
Intermediate to advanced
804 pages
18h 44m
English
Content preview from CompTIA Network+ N10-009 Cert Guide, 2nd Edition
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Chapter 21
A Network Troubleshooting Methodology
This chapter covers the following topics related to Objective 5.1 (Explain the troubleshooting methodology) of the CompTIA Network+ N10-009 certification exam:
Identify the problem
Gather information
Question users
Identify symptoms
Determine if anything has changed
Duplicate the problem, if possible
Approach multiple problems individually
Establish a theory of probable cause
Question the obvious
Consider multiple approaches
Top-to-bottom/bottom-to-top OSI model
Divide and conquer
Test the theory to determine the cause
If theory is confirmed, determine next steps to resolve problem
If theory is not confirmed, establish a new theory or escalate
Establish a plan of action to resolve the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.