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5 Oct, 4 tweets, 1 min read
Python Cheat Sheet 👇
Part - 1 Image
Part -2 Image
PDF download Link -

perso.limsi.fr/pointal/_media…

PC: Laurent Pointal
License Creative Commons Attribution.

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Rakesh Jain Profile picture
7 Oct
SSL Decoded!

Everything you need to know about Secure Socket Layer.

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What is SSL ?

It’s a protocol for encrypting and securing communications that take place on the Internet. It's now replaced by an updated protocol called TLS (Transport Layer Security) some time ago.
The main use case for SSL/TLS is securing communications between a client and a server, but it can also secure email, VoIP, and other communications over unsecured networks.
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7 Oct
I rarely use password login. And many folks out there even today aren't sure about ssh keys and their usage.

Everything about SSH Keys.

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What is SSH?

SSH is a secure protocol used as the primary means of connecting to Linux servers remotely. It provides a text-based interface by spawning a remote shell. After connecting, all commands you type in your local terminal are sent to d remote server and executed there.
Today, the SSH protocol is widely used to login remotely from one system into another, and its strong encryption makes it ideal to carry out tasks such as issuing remote commands and remotely managing network infrastructure and other vital system components.
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Rakesh Jain Profile picture
5 Oct
BGP - A possible reason behind the recent disappearance of #facebook #instagram & #whatsapp from the internet.

What is BGP ?

#facebookoutage #networking

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BGP (Border Gateway Protocol) is the routing method that enables the Internet to function. Without it, we wouldn’t be able to do a Google search or send an email. Image
What is network routing?

“The name of a resource indicates what we seek, an address indicates where it is, and a route tells us how to get there”.

- John F. Shoch
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Rakesh Jain Profile picture
27 Sep
What is Git?

What is GitHub?

Learn Git in just one thread! 👇
What is Git?

Git is a free, open-source distributed version control system. It keeps track of projects and files as they change over time with the help of different contributors.

A very popular tool used for source code management.
What is GitHub ?

GitHub is an online Git repository hosting service. Thought It adds many of its own features. While Git is a command line tool, GitHub provides a Web-based graphical interface.
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Rakesh Jain Profile picture
25 Sep
What is CPU Load Average?

#Linux #DevOps #Compute

A thread 👇
Load averages are the three numbers shown with the uptime and top commands - they look like this:

load average: 0.09, 0.05, 0.01
The three numbers represent averages over progressively longer periods of time (one, five, and fifteen-minute averages), and that lower numbers are better. Higher numbers represent a problem or an overloaded machine.
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Rakesh Jain Profile picture
23 Sep
Networking Basics!

How communication happens?
What are 7 OSI Layers?

#Linux #networking #basics #osi #DevOps

A thread 👇
What Is the OSI Model?

The Open Systems Interconnection (OSI) model describes seven layers that computer systems use to communicate over a network. Image
Layer 1: Physical Layer

It represents the electrical and physical representation of the data connection / system.

When a networking problem occurs, many networking pros go right to the physical layer to check that all of the cables are properly connected. Image
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