HTML

This morning we've learnt how to work with HTML. I'm going to leave all the steps below.

First, you have to open your NotePad and write the following things:

Then, you have to save the note and open it with the web browser: 

Hope you find it useful.
Bye,
xxx

WiFi Security

Yesterday, Angélica explained us two things about WiFi security.
First of all, she told us the types of WiFi protocols/versions and their speeds and finally, she mentioned a couple of things that we need to connect to the Internet through WiFi:


-WiFi protocols/versions: 

a)  802.11b----- 11 Mbps (2.4 GHz)
b) 802.11a----- 54 Mbps (5 GHz)
c) 802.11g----- 54 Mbps (2.4 GHz)
d) 802.11n----- 300 Mbps (2.4 GHz & 5 GHz)
e) 802.11ac----- 1300 Mbps (5 GHz)

-What do we need to connect to the Internet through WiFi?

  1) A router
  2) An Access Point
  3) A SSIC (Service Set Identification)
  4) An open Network
  5) WEP (Wired Equivalent Privacy)
  6) WPA & WPA2 (Works Progress Administration)



Hope you find it useful.
Bye,
xxx

SECURITY CONCEPTS

We also talked about a couple of security concepts. Such as: Confidentiality, Cryptography, Encrypt, Decrypt, Algorithm, Key and Digital Certificate.

*Confidentiality: when he have private or confidential communications, we have communications in which nobody can see what we're doing. With confidentiality it is difficult (nearly impossible) to do sniffing. The data is only visible with people who have permissions to access to it.

*Cryptography: It is a group of techniques that allow you to encrypt words. With cryptography you can get conifdentiality. Apart from encrypting, you can also decrypt.

*Encrypt: when you are encrypting, you are modifying the data to make it unreadable/ illegible.

*Decrypt: this happens when you recover the original text.

*Algorithm: it is a self-contained sequence of actions to be performed.

*Key: it is a field that you use to sort data. The keys can have a lenght of 1024 numbers. Depending on which key you are applying, the encryption will result in one way or another.

*Digital Certificate: it is an algorithm with a key that allows you to guarantee your personality.



Hope you find it useful.
Bye,
xxx

SECURITY TIPS

Hi guys! Last day we saw a video about security tips and our teacher told us to create a PowerPoint with some more tips. This is the final result:

Security tips de Diana López Pérez


Hope you find it useful.
Bye,
xxx