Networking and Operating Systems

Network+,  Lesson 1.2: OSI Model Concepts  – TestOut

 Exam Objectives Covered: 

  • 1.1 Explain concepts related to the Open Systems Interconnection (OSI) reference model. . 

Links:

Overview:

Networks are built on common standards and models that describe how devices and protocols interconnect. In this lesson, you will identify how the implementation and support of these systems refer to an important common reference model: the Open Systems Interconnection (OSI) model. The OSI model breaks the data communication process into discrete layers. Being able to identify the OSI layers and compare the functions of devices and protocols working at each layer will help you to implement and troubleshoot networks.  

Text Lessons:

  • 1.2.1 Open Systems Interconnection Model 
  • 1.2.2 Data Encapsulation and Decapsulation 
  • 1.2.3 Layer 1 – Physical 
  • 1.2.4 Layer 2 – Data Link 
  • 1.2.5 Layer 3 – Network 
  • 1.2.6 Layer 4 – Transport 
  • 1.2.7 Upper Layers 
  • 1.2.8 OSI Model Summary  

Quiz/Assessment:

  • 1.2.9 Lesson Review (15 questions) 

Topics Discussed:

  • Why are protocols important for networking? 
  • What is the OSI model? Why is it important for understanding networking? 
  • At which OSI model layer do common network appliances, applications, and functions work? 
  • How does data encapsulation facilitate data transmission? How does encapsulation relate to frames, datagrams, segments, and ports? 

Assignment:

  1. Access the TestOut Courseware through the provided link.
  2. Study Lesson 1.2: OSI Model Concepts , and complete the 15 question
    1.2.9 Lesson Review      quiz to complete the Section.

Assigned: December 5th, 2024
Teacher Pacing Due Date: December 6th, 2024