What you need to know Sis. Give the admin topics to study?

Question

Domain Name System

In general, I decided to go for the time being to Sis. The administrator or his assistant ...
BUT while I was on an industrial practice from a technical school in another technical school as an assistant to the system. admin, of course, I learned something, but still little!
According to this, advise what topics I need to go through again in order to work Sis. Admin?!
I most likely did not go through many of the topics at all. our city training was at the level of memorizing the levels of the OSI model, and what is responsible for what and so on was no longer required ... alas ((
As we were told, we will teach later and in the end it’s not a fig ... :\
So I’m asking you here point by point so in general describe what the system admin usually does and what he needs to know...
Thanks in advance for the answers =)

Answer 1

The usual system administrator googles.
And you googled .
And the recruiter-barker will paint everything for you, he will not regret the colors.

Answer 2

A good system administrator mostly calmly reads the Internet, since everything is already set up for him and works like a clock. A bad system administrator is covered in sweat and dust, running from computer to computer, setting up something, fixing something, rolling updates manually and all that.
Recommended reading for starters:
"Computer Architecture" E. Tanenbaum
"Computer Networks" E. Tanenbaum
Russian Language Textbook.

Answer 3

If the enterprise is not large and works with Windows, then be sure to be familiar with at least Active Directory, domain policies.
If with Linux / Unix, then at least understand how to work with users in these OS, how to manage resources.
In any case, you should always remember about backups and monitoring.
If the office is already serious, then more is required from the administrator - setting up routers, switches, various switches (hello OSI model), various NAS, virtualization, telephony servers (Asterisk, Oktell, Panasonic), distributed loads, redundant communication channels, etc. d.
The main task of the system administrator is to ensure that everything related to IT in the organization works non-stop and helps the organization earn.
When I worked as an admin, I tried to automate everything as much as possible, which I recommend to all admins.

Answer 4

If you ask such questions, then it's definitely too early for the system administrator. Try to get settled as an enikey worker and fall on the tail of an experienced admin.

Answer 5

The topic "search for information" (including on the toaster) :) The question of what to study for a novice administrator arises here at least once a week.

Answer 6

the very first advice is generally class)) the sys admin googles and you google) do you want to work remotely or work in the office?

Answer 7

What you need to know Sis. admin

Sysadmin is a flexible concept.
This is also the name of the enikey worker who helps users, and gets jammed paper from printers.
This is also the name of the person who sets up the network, or sets up servers, or is engaged in information security.
It all depends on specialization.

Answer 8

on the part of Unix https://4admin.info/system-administration-unix/
for Windows: the same topics, only the software will be Windows + AD, GPO
will be enough for the first time

Answer 9

Here's more: nodesquad.blogspot.ru/2013/04/blog-post.html?m=1