SOCIAL NETWORKS

Social networks are web applications that favor the contact between individuals.

Now there are many social networks as: facebook, tuenti, twitter,instagram, messenger,skype, whatsapp, gmail......
There were also professional networks, that are use to communicate people of professional business.

FACEBOOK: is a free service in which we will be able to manage our own personal space.
TUENTI: is a spanish network.
TWITTER: you can send messages of text of short length.
INSTAGRAM: is an application to share photos.
MESSENGER: was a program of instantaneous messenger company.
SKYPE: is an application that allows people to communicate.
WHATSAPP: this application allows to send and to recive messages through internet.
GMAIL: offers chat, spam, send text messages by our e-mail.

 COMPUTER NETWORKS

Hello, last week we studied about networks, now I can show you some types of it.

Computer networks are used to:

• Share resources.
•  Share information.
•  Sharing services.
•  Cost savings. 
•  Centralized Management

1.   There are four types of networks according to their size:

PAN:  Are uses to communicate devices for a few of metres.

LAN: Are uses to communicate devices in a house.

MAN: Are uses to communicate devices between cities.

WAN: Are uses to communicate devices between countries.

 2. There are networks according to their privacy:

Internet: is a global computer network

Intranet: is a network that uses internet tools

Extranet: is a virtual private network

3.   There are also networks peer to peer (P2P) or client- servers according to their relationship.