A nurse jumps into the IT industry! Network terminology explanation

Hello!
I'm Inoue, the Persian cat at Beyond Shikoku office.

As someone who jumped into the IT industry from a completely different field with no prior experience, I
'd like to share the IT terminology related to networking that I studied as my first step, along with explanations, in this blog.

First of all, there are a lot of terms that are abbreviated using letters of the alphabet, right?
I'd heard them before, but I'd never really thought about their detailed meanings.
In fact, there are tons of words I've never even heard of.
I'm starting to feel like this is just like my English classes, which I hated.
As someone who prefers reading books to searching the internet, here are some of the IT terms I've learned from textbooks!
I've also included my (unspoken) thoughts as a bonus.
I'd be happy if you read it without thinking, "This is just an unnecessary extra."

 

Network Key Terms

-the OSI reference model
network structure, divided into seven layers.

(Layer 1) Physical Layer (Layer 2) Data Link Layer (Layer 3) Network Layer (Layer 4) Transport Layer (Layer 5) Session Layer (Layer 6) Presentation Layer (Layer 7) Application Layer

(That thing you drink to prevent heatstroke, right?)

-IP
An address on an
(Apparently I have another home on the internet...)

NetworkProtocol:
A set of rules for computers to communicate with each other over a network.
(like a pinky promise)

TCPis
a protocol for ensuring reliable and secure data communication.
(Please include that protocol as a standard feature in my system too, lol)

•A port number
is the connection point for a program.
(Welcome!)

(a node
A general term for devices connected to
My throat hurts. (lol))

-A subnet mask
that logically divides a network into multiple networks.
(But wouldn't a net-like mask be ineffective at preventing infectious diseases?)

computerDNS
This refers to the service of obtaining an IP address from a
A computer running DNS is called a DNS server.
(Dot com~♪ Dot com♪)

•Firewall:
A system placed between the local network and the internet.
Its role is to prevent unauthorized intrusion from the outside.
(It must be a wall that's burning fiercely.)

-www
A document system that is standardly used on the internet.
grass)

HTTPis
the protocol used for communication with servers in www services.
(www-related communication? Sounds interesting♪)

HTTPSis
a protocol that adds SSL encryption to HTTP.
URLs starting with "https://" indicate that HTTPS encrypted communication is being used.
(I never really paid attention to whether there was an "s" after "http" before.)

SSLis
an encryption protocol used to securely exchange information over the internet.
(Isn't there an M between S and L?)

Cloudcloud
computing, which allows you to use services without being aware of what's happening on the other side of the network.
(So the other side of the network is beyond the sky, huh?)

HTML,
which is widely used on the internet.
(I can't even use Japanese properly... what a pain.)

SMTPis
a protocol used for sending internet email.
(At first glance, I thought it was the name of a national idol!)

POPis
a protocol used for receiving internet mail.
(Does it also send colorful decorative emails?)

 

summary

As I wrote in my last blog,

■There are many words written in katakana!
■There are many words abbreviated in the alphabet!

⇒This is the textbook I used for my studies this time!

"Explanation of Important Network Terminology" by Ryuji Kitami

I'm struggling because there are so many terms to memorize for my job.
But if I memorize just one a day, I can learn 365 languages!
I'll probably forget at least 315 of them... (laughs)
Forgetting is inevitable! Because I've just learned something new!
It's best to stay positive!

Growing every day, moving forward every day.
I must update myself every single day!!!
Thank you for reading to the end.