December 2019
Beginner
510 pages
12h 7m
English
Content preview from Networking Fundamentals
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nslookup
nslookup is a command-line tool that allows you to perform manual DNS queries. It is a handy tool that can be used for troubleshooting. The tool can be used in two modes:
- Non-interactive mode
- Interactive mode
Non-interactive mode means you perform the query by typing in the command, whereas interactive mode allows you to configure more in-depth parameters in your query. The easiest way to understand how nslookup works is by using it, so we will carry out two activities: one in non-interactive mode and the other in interactive mode.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.