Diploma in Demystifying Networking | Free Online Course | Alison

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Diploma in Demystifying Networking

This free online course introduces you to computer networks, Wireshark software, encryption and Cisco packet tracers.

Network and Security
Free Course
This free online course looks at computer networking from an end to end perspective, such as a client connecting to a web server. It relates the concepts to examples that we see in everyday life. Start this course and learn about layers in a network, Cisco packet tracer, addressing, public and private networks and some concepts from security, routing, troubleshooting network layer and challenges.
  • Duration

    10-15 Hours
  • Assessment

  • Certification

  • Publisher






View course modules


This free course on Demystifying Networks is meant for students who do not have a core computer science background. The course begins by using animation scenarios about how the application layer ensures that the entire web page is sent from the web server to your computer. You will study software called Wireshark which is a software that allows the capture of live internet traffic.

Next, the course introduces the most essential part of encryption which is basically changing the human readable form using some mathematical function. You will learn how port numbers help the communication between one application and another; by assigning port numbers the applications are able to determine which packet belongs to which application.

By taking this course, you will gain an indepth knowledge of layering, addressing, troubleshooting approach, Cisco packet tracer, routing mechanism. Start this course today and gain valuable skills in computer networking.

Start Course Now


The CEO's Problem and Layers in a Network

Dabbawala's Analogy, Routing and Traveler's Dilemma

Diploma in Demystifying Networking - First Assessment

Tranport Layer, TCP, UDP, Delivery Fiasco and Port Numbers

Network Security

Diploma in Demystifying Network - Second Assessment

Course assessment

Learning Outcomes

Having completed this course you will be able to:

  • Identify which network sends packets through layers
  • Discuss TCP and UDP on Cisco Packet Tracer
  • Identify how to troubleshoot a network and challenges of troubleshooting
  • Examine how network sends packets through layers and interacts with its peers using protocols and using IP addresses
  • Recognize different types of encryption and how to code and decode using different keys
  • Differentiate between network security, information on data security, cyber and internet security and certain securities that relate to the computer


All Alison courses are free to enrol, study and complete. To successfully complete this Diploma course and become an Alison Graduate, you need to achieve 80% or higher in each course assessment. Once you have completed this Diploma course, you have the option to acquire an official Diploma, which is a great way to share your achievement with the world. Your Alison Diploma is:

Ideal for sharing with potential employers - include it in your CV, professional social media profiles and job applications
An indication of your commitment to continuously learn, upskill and achieve high results
An incentive for you to continue empowering yourself through lifelong learning

Alison offers 3 types of Diplomas for completed Diploma courses:

Digital Diploma - a downloadable Diploma in PDF format, immediately available to you when you complete your purchase
Diploma - a physical version of your officially branded and security-marked Diploma, posted to you with FREE shipping
Framed Diploma - a physical version of your officially branded and security-marked Diploma in a stylish frame, posted to you with FREE shipping

All Diplomas are available to purchase through the Alison Shop. For more information on purchasing Alison Diplomas, please visit our FAQs. If you decide not to purchase your Alison Diploma, you can still demonstrate your achievement by sharing your Learner Record or Learner Achievement Verification, both of which are accessible from your Dashboard. For more details on our Diploma pricing, please visit our Pricing Page.



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