Os vários elementos das redes informáticas (Coursera)

Offered by Google,
Os vários elementos das redes informáticas (Coursera)

Este curso foi concebido para proporcionar uma vista geral das redes informáticas. Vamos abordar desde os princípios básicos das tecnologias e protocolos de redes modernos até aplicações práticas e resolução de problemas de rede. Para terminar, vamos abordar o modo como estas informações podem surgir numa entrevista de emprego e dar-lhe algumas sugestões para resolver problemas no local.

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No final deste curso, será capaz de:
● Descrever redes informáticas em termos de um modelo de cinco camadas;
● Compreender todos os protocolos padrão envolvidos nas comunicações TCP/IP;
● Compreender ferramentas e técnicas poderosas de resolução de problemas de rede;
● Adquirir conhecimentos sobre serviços de rede como DNS e DHCP, que ajudam ao funcionamento das redes informáticas;
● Compreender a cloud computing, tudo como um serviço e o armazenamento na nuvem.

Course 2 of 5 in the Apoio Técnico de TI da Google Professional Certificate

Syllabus

WEEK 1
Introdução às redes
Damos-lhe as boas-vindas ao curso Redes da Certificação profissional de apoio técnico de TI! Na primeira semana deste curso, vamos abordar os princípios básicos de redes informáticas. Vamos saber mais sobre os modelos de redes TCP/IP e OSI, assim como de que forma as camadas de rede funcionam em conjunto. Também vamos abordar os princípios básicos dos dispositivos de rede, como cabos, hubs e comutadores, routers, servidores e clientes. Vamos ainda explorar a camada física e a camada de ligação de dados do nosso modelo de rede mais detalhadamente. No final deste módulo, vai saber como todas as diferentes camadas do modelo de rede se conjugam para criar uma rede.

WEEK 2
A CAMADA DE REDE
Na segunda semana deste curso, vamos explorar a camada de rede de modo mais aprofundado. Vamos adquirir conhecimentos sobre o esquema de endereçamento IP e sobre como funcionam as sub-redes. Vamos explorar como funciona o encapsulamento e como os protocolos, como o ARP, permitem a comunicação entre diferentes camadas da rede. Também vamos abordar os princípios básicos do encaminhamento, protocolos de encaminhamento e como funciona a Internet. No final deste módulo, poderá descrever o esquema de endereçamento IP, compreender como funcionam as sub-redes, realizar operações matemáticas binárias para descrever sub-redes e compreender como funciona a Internet.

WEEK 3
As camadas de transporte e aplicação
Na terceira semana deste curso, vamos explorar as camadas de transporte e aplicação. No final deste módulo, poderá descrever portas e sockets TCP, identificar os diferentes componentes de um cabeçalho TCP, mostrar a diferença entre protocolos orientados para ligações e sem ligação e explicar como o TCP é utilizado para assegurar a integridade dos dados.

WEEK 4
Serviços de redes
Na quarta semana deste curso, vamos explorar os serviços de redes. Vamos saber mais sobre a razão pela qual precisamos do DNS e como este funciona. Vamos também mostrar-lhe a razão pela qual o DHCP simplifica a tarefa de administração de redes. No final deste módulo, vai poder descrever como funcionam o DNS e o DHCP, de que modo as tecnologias NAT ajudam a manter as redes seguras e como as VPNs e os proxies ajudam os utilizadores a estabelecer ligação e manter-se protegidos.

WEEK 5
Estabelecer ligação à Internet
Na quinta semana deste curso, vamos explorar a história da Internet, como evoluiu e como funciona atualmente. Vamos compreender as várias formas de estabelecer ligação à Internet através de cabos, ligações sem fios e de rede móvel e até mesmo ligações por fibra. No final deste módulo, vai poder definir os componentes das WANs e descrever as noções básicas das redes sem fios e móveis.

WEEK 6
Resolução de problemas e o futuro das redes
Parabéns, chegou à semana final do curso! Na última semana deste curso, vamos explorar o futuro das redes de computadores. Vamos também abordar os aspetos práticos da resolução de problemas de uma rede ao utilizar sistemas operativos populares. No final deste módulo, vai poder detetar e corrigir muitos problemas de rede comuns utilizando ferramentas disponíveis nos sistemas operativos Microsoft Windows, MacOS e Linux.

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