Overview of Important Protocols

Overview

By completing this course, learners will gain a practical understanding of the essential protocols that power today’s computer networks. You’ll explore the significance of protocols such as ARP and Spanning Tree Protocol, learning how they work together to prevent Layer 2 loops and maintain network stability. The course provides clear explanations of critical services like DHCP and DNS, illustrating how dynamic IP assignment and domain name resolution are fundamental to seamless connectivity. You’ll also delve into NAT and PAT, discovering how these techniques enable secure and efficient internet access for multiple devices.

Unique to this course is its comprehensive yet accessible approach, covering not only foundational protocols but also widely used application-level protocols like HTTP, SMTP, Telnet, SSH, and RDP. Through real-world examples, the content empowers you to confidently design, implement, and troubleshoot robust networks. Whether you’re preparing for a networking career or seeking to strengthen your technical foundation, this course delivers the essential knowledge you need to succeed.

Advantages and disadvantages

Advantages

Structured courses with graded quizzes, assignments and deadlines you can reset.
A shareable certificate from the university or company when you pay.
Financial aid is often approved for students in India (apply 15 days before you need it).
Self-paced: start any time.

Disadvantages

Paid after a 7-day free trial (Coursera Plus or per course).
Some courses can be audited for free, but graded work and certificates need payment.

Some points apply to every course of this kind; see how we rank.

This course is paid. Here is how to take it for free

Free trials: You can start a 7-day free trial for many individual courses, Specializations, or a Coursera Plus subscription to test full course features. Cancel before the seventh day if you do not want to be charged.
Financial aid: If you cannot afford the fee for a certificate, you can apply for financial aid through the link on the course home page by filling out an application about your background and goals.

Cisco is in Tier 3: good universities, respected companies, nonprofits and well-known teachers of our institution ranking (80/100).