Cisco CCNA Exam Tutorial Mapping The OSI Model To The TCPIP Model
Below is a MRR and PLR article in category Computers Technology -> subcategory Computer Certification.
Cisco CCNA Exam Tutorial: Mapping the OSI Model to the TCP/IP Model
Overview
Mastering the mapping between the OSI model and the TCP/IP model is essential for CCNA exam success. Chris Bryant, CCIE
12933, breaks down the details of both.
Key Concepts
Comparing Models
While most networking professionals are familiar with the OSI model, CCNA certification requires knowledge of both the OSI and TCP/IP models and their correlation.
TCP/IP Layers
The TCP/IP model consists of four layers that correspond to specific OSI levels. Understanding each TCP/IP layer's role and its OSI counterpart is crucial.
- Application Layer (TCP/IP): Performs functions similar to the Application, Presentation, and Session layers of the OSI model.
- Transport Layer (TCP/IP): Comparable to the OSI Transport layer, utilizing TCP or UDP for communications.
- Internetwork Layer (TCP/IP): Uses IP addresses for packet routing, akin to the OSI's Network layer. This layer is also known as the Internet layer in the TCP/IP model.
- Network Interface Layer (TCP/IP): Defines protocols and hardware for data delivery, integrating tasks of the OSI Data Link and Physical layers.
Tips for Success
Navigating these concepts can be challenging at first. Focus your studies on the OSI model while ensuring you understand how it aligns with the TCP/IP model. This knowledge will pave the way to CCNA examination success.
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