(This information is practical for network administrators. Although it is a bit old, it is still worth learning, especially for network administrators who have just taken office.
This document includes the following attachments:
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 1
chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
network operating system....)