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.
Overview of Important Protocols
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Overview of Important Protocols
This course is part of Network Fundamentals Specialization
Instructor: Mai Vang
Included with
Gain insight into a topic and learn the fundamentals.
Beginner level
No prior experience required
2 hours to complete
Flexible schedule
Learn at your own pace
What you'll learn
Understand how protocols like ARP, STP, DHCP, DNS, NAT, and PAT ensure stable and secure network operation
Gain practical knowledge of HTTP, SMTP, Telnet, SSH, and RDP for designing and troubleshooting networks
Skills you'll gain
Details to know
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Recently updated!
December 2025
Assessments
6 assignments
Taught in English
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This course is part of the Network Fundamentals Specialization
When you enroll in this course, you'll also be enrolled in this Specialization.
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There are 6 modules in this course
The MAC address is a unique identifier assigned to each network interface or network adapter, and it plays a vital role in device identification, data link layer communications, and address resolution. Address resolution is the process of resolving an IP address to a MAC address, and it is extensively used when a device wants to communicate with another device on the same local network. In this module, you will learn about the popular Layer 2 protocol, the Address Resolution Protocol (ARP), and its workings as well as the Spanning Tree Protocol (STP), what it is and how it removes loops from the network.
What's included
2 videos4 readings1 assignment
A router is a networking device that operates in Layer 3 of the OSI model and connects two or more packet-switched networks together. It is responsible for forwarding packets by determining the optimal path for data to reach its destination. This process of selecting the best path for data packets is called routing. The router uses routing protocols and algorithms to find the optimal route for the packets. This topic describes routing and how routing protocols operate in Layer 3.
What's included
2 videos1 reading1 assignment
DHCP and DNS are both important networking protocols that play significant roles in facilitating communication and connectivity within computer networks. In this module, you will learn about the popular application layer protocols, DHCP and DNS, and their roles in IP assignment and IP resolution, respectively.
What's included
1 video1 reading1 assignment
While protocols such as ARP, STP, and DHCP are widely known, protocols such as Hypertext Transfer Protocol (HTTP), File Transfer Protocol (FTP), Secure Shell (SSH), and other commonly known protocols are equally essential for keeping the data flowing in a network. In this module, you will explore these popular networking protocols and understand their role and significance in the networking world.
What's included
1 reading1 assignment
In computer networks, address translation refers to the conversion of one type of network address into another. This translation helps devices on different networks communicate with each other by converting the source and destination addresses. In this module, you will learn about two of the most popular address translations: Network Address Translation and Port Address Translation.
What's included
1 video1 reading1 assignment
What's included
1 reading1 assignment
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