Computer Networking: Physical Layer | Free Online Course | Alison
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Computer Networking: Physical Layer

In this free online course, learn about computer networking in the physical layer of the TCP/IP protocol stack.

Network and Security
Free Course
In this free online course, you will learn about computer networking and specifically the physical layer of the protocol stack. The various communication tasks in this layer are explained, along with the decoding and encoding techniques. How you can implement network security policies are also discussed. Boost your computer networking knowledge and skills by studying this specialized course.
  • Duration

    1.5-3 Hours
  • Certification

    Yes
  • Mobile Friendly

    Yes
  • Publisher

    NPTEL
  • Accreditation

    CPD

Description

Modules

Outcome

Certification

View course modules

Description

In this free online course, you are introduced to the world of computer networking, with particular focus on the physical layer. You will explore the role of the modem in a network, as well as the differences between baseband and broadband, and the importance of network security. Demonstrations, problems, examples, and assessment questions in this instructor-led video-based course are designed to provide you with a comprehensive foundation which will enable you to take serious steps into understanding this section of the protocol stack.

The course begins by introducing you to the different types of networks that have been developed over the years. Then the different physical layer properties are discussed to help you understand how they may affect our networking capacity. You will explore the different ways of securing a network to minimize the risks of disruptions that can come as a result of an intrusion.

The course includes topics on the communication model, telephone networks, baseband vs broadband, NICs, analog and digital signals, transmission impairment, modulation techniques, network security policies, vulnerability scanning, firewalls and more. This course will be of interest to computer engineering students, networking and programming professionals, or those looking to enhance their career prospects in the computer networking industry. Start this course here today.

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Learning Outcomes

Upon successful completion of this course, you should be able to:


  • Discuss the communication model and network security policies
  • Explain the communication model and communication tasks
  • Describe wide area networks, telephone networks, and hubs
  • Discuss sine waves, transmission impairment, and data rate limits
  • Explain attenuation, distortion, noise, and the signal-to-noise ratio 
  • Describe the encoding and decoding techniques
  • Discuss encoding schemes, modulation techniques, and network security policies
  • Explain transport layer security, application layer security, and firewalls

Certification

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

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

All Certificates are available to purchase through the Alison Shop. For more information on purchasing Alison Certificates, please visit our FAQs. If you decide not to purchase your Alison Certificate, 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 Certificate pricing, please visit our Pricing Page.

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