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.

Class Deals by MOOC List - Click here and see Coursera's Active Discounts, Deals, and Promo Codes.

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.

Go to Class
MOOC List is learner-supported. When you buy through links on our site, we may earn an affiliate commission.

Related Courses

Classical Cryptosystems and Core Concepts (Coursera) Coursera
University of Colorado System

Classical Cryptosystems and Core Concepts (Coursera)

Welcome to Introduction to Applied Cryptography. Cryptography is an essential component of cybersecurity. The need to protect sensitive information and ensure the integrity of industrial control processes has placed a premium on cybersecurity skills in today’s information technology market. Demand for cybersecurity jobs is expected to rise 6 million globally by 2019, with a projected shortfall of 1.5 million, according to Symantec, the world’s largest security software vendor. According to Forbes, the cybersecurity market is expected to grow from $75 billion in 2015 to $170 billion by 2020.

Jun 8th 2026
3 Weeks
Introduction to Cloud Identity (Coursera) Coursera
Google Cloud

Introduction to Cloud Identity (Coursera)

Introduction to Cloud Identity serves as the starting place for any new Cloud Identity, Identity/Access Management/Mobile Device Management admins as they begin their journey of managing and establishing security and access management best practices for their organization. This 15-30 hour accelerated, one-week course will leave you feeling confident to utilize the basic functions of the Admin Console to manage users, control access to services, configure common security settings, and much more.

Jun 8th 2026
1 Week
Social Network Analysis (Coursera) Coursera
University of California, Davis

Social Network Analysis (Coursera)

This course is designed to quite literally ‘make a science’ out of something at the heart of society: social networks. Humans are natural network scientists, as we compute new network configurations all the time, almost unaware, when thinking about friends and family (which are particular forms of social networks), about colleagues and organizational relations (other, overlapping network structures), and about how to navigate delicate or opportunistic network configurations to save guard or advance in our social standing (with society being one big social network itself).

Jun 8th 2026
5-12 Weeks
Asymmetric Cryptography and Key Management (Coursera) Coursera
University of Colorado System

Asymmetric Cryptography and Key Management (Coursera)

In asymmetric cryptography or public-key cryptography, the sender and the receiver use a pair of public-private keys, as opposed to the same symmetric key, and therefore their cryptographic operations are asymmetric. This course will first review the principles of asymmetric cryptography and describe how the use of the pair of keys can provide different security properties. Then, we will study the popular asymmetric schemes in the RSA cipher algorithm and the Diffie-Hellman Key Exchange protocol and learn how and why they work to secure communications/access.

Jun 8th 2026
4 Weeks
IT Infrastructure and Emerging Trends (Coursera) Coursera
University of Minnesota

IT Infrastructure and Emerging Trends (Coursera)

Today organizations are either embracing digital technologies to improve their businesses or being disrupted by entrants with such capabilities. Therefore it is important for managers and executives of all organizations to learn about various technologies and apply them in innovative ways. Some of the most important trends in Information Technology are in mobile, cloud, security, and blockchains.

Jun 8th 2026
5-12 Weeks
Salesforce Basics (Coursera) Coursera
University of California, Irvine

Salesforce Basics (Coursera)

In this course, you will learn about what the world’s number one Customer Relationship Manager (CRM) system has to offer. You will begin this course by understanding the components that Salesforce leverages to make it an optimal system. You will learn about the basics in Lightning for Sales, Community Cloud and Marketing, and understanding how to secure your Salesforce Organization and Manage Permissions. These tools will serve as building blocks to implementing Salesforce into any organization. The course includes in-depth readings and practical application activities within Salesforce's Trailhead education platform, peer discussion opportunities, demonstration videos, and peer review assignments.

Jun 8th 2026
3 Weeks
Cloud Computing Concepts, Part 1 (Coursera) Coursera
University of Illinois at Urbana-Champaign

Cloud Computing Concepts, Part 1 (Coursera)

Cloud computing systems today, whether open-source or used inside companies, are built using a common set of core techniques, algorithms, and design philosophies—all centered around distributed systems. Learn about such fundamental distributed computing "concepts" for cloud computing. Some of these concepts include: clouds, MapReduce, key-value/NoSQL stores, classical distributed algorithms, widely-used distributed algorithms, scalability, trending areas, and much, much more!

Jun 8th 2026
5-12 Weeks
Configuration Management and the Cloud (Coursera) Coursera
Google

Configuration Management and the Cloud (Coursera)

In this course, you’ll learn how to apply automation to manage fleets of computers. You’ll understand how to automate the process for deploying new computers, keeping those machines updated, managing large-scale changes, and a lot more. We'll discuss managing both physical machines running in our offices and virtual machines running in the Cloud.

Jun 9th 2026
4 Weeks
Communicating Data Science Results (Coursera) Coursera
University of Washington

Communicating Data Science Results (Coursera)

Making predictions is not enough! Effective data scientists know how to explain and interpret their results, and communicate findings accurately to stakeholders to inform business decisions. Visualization is the field of research in computer science that studies effective communication of quantitative results by linking perception, cognition, and algorithms to exploit the enormous bandwidth of the human visual cortex. In this course you will learn to recognize, design, and use effective visualizations.

Jun 8th 2026
3 Weeks
Salesforce Reporting (Coursera) Coursera
University of California, Irvine

Salesforce Reporting (Coursera)

Salesforce Reporting focuses on how the micro-level changes in Salesforce affect the macro level of the user experience. In this course, you will focus on creating custom objects, field dependencies, and work flows to track accounts or services. It is also important that you maintain data clean for your organization and you will work with creating reports, managing data, and creating full reports and dashboards. Lastly, you will focus on your customer base with Salesforce Service Cloud to maintain engagement through your services. The course includes in-depth readings and practical application activities within Salesforce's Trailhead education platform, peer discussion opportunities, demonstration videos, and peer review assignments.

Jun 8th 2026
3 Weeks