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CompTIA Linux+ Certification Guide

You're reading from   CompTIA Linux+ Certification Guide A comprehensive guide to achieving LX0-103 and LX0-104 certifications with mock exams

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Product type Paperback
Published in Sep 2018
Publisher
ISBN-13 9781789344493
Length 590 pages
Edition 1st Edition
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Author (1):
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Philip Inshanally Philip Inshanally
Author Profile Icon Philip Inshanally
Philip Inshanally
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Toc

Table of Contents (23) Chapters Close

Preface 1. Configuring the Hardware Settings FREE CHAPTER 2. Booting the System 3. Changing Runlevels and Boot Targets 4. Designing a Hard Disk Layout 5. Installing a Linux Distribution 6. Using Debian Package Management 7. Using YUM Package Management 8. Performing File Management 9. Creating, Monitoring, Killing, and Restarting Processes 10. Modifying Process Execution 11. Display Managers 12. Managing User and Group Accounts 13. Automating Tasks 14. Maintaining System Time and Logging 15. Fundamentals of Internet Protocol 16. Network Configuration and Troubleshooting 17. Performing Administrative Security Tasks 18. Shell Scripting and SQL Data Management 19. Mock Exam - 1 20. Mock Exam - 2 21. Assessment 22. Other Books You May Enjoy

Client-side DNS

Up to this point, we've been assigning various IPv4 and IPv6 addressing information but
this does not mean that we can browse the internet. For that, we will need to
configure the DNS information; particularly, we need to tell the Linux system which DNS
server to use when attempting to venture out to the internet. As we've seen earlier in this
chapter, there are various text boxes that we can fill out for IPv4, IPv6, gateway and DNS
information using a GUI utility. Here, we will look at configuring the DNS information at
the command prompt; particularly the /etc/resolv.conf file. Here is the content of the
/etc/resolv.conf file:

root@philip-virtual-machine:/home/philip# cat /etc/resolv.conf
# This file is managed by man:systemd-resolved(8). Do not edit.
nameserver 127.0.0.53
root@philip-virtual-machine:/home/philip#

Some output has been omitted for brevity...

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