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Lecture Building a Simple Network: Understanding the Host-to-Host Communications Model

Upon completion of this lesson, the successful participant will be able to understanding the Host-to-Host Communications Model, understanding why a Layered Network Model, understanding the seven layers of the OSI Model,. Inviting you to refer. | Building a Simple Network Understanding the Host-to-Host Communications Model Understanding Host-to-Host Communications Older model Proprietary Application and combinations software controlled by one vendor Standards-based model Multivendor software Layered approach Why a Layered Network Model? Reduces complexity Standardizes interfaces Facilitates modular engineering Ensures interoperable technology Accelerates evolution Simplifies teaching and learning Lesson Aim The Seven Layers of the OSI Model Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) . | Building a Simple Network Understanding the Host-to-Host Communications Model Understanding Host-to-Host Communications Older model Proprietary Application and combinations software controlled by one vendor Standards-based model Multivendor software Layered approach Why a Layered Network Model? Reduces complexity Standardizes interfaces Facilitates modular engineering Ensures interoperable technology Accelerates evolution Simplifies teaching and learning Lesson Aim The Seven Layers of the OSI Model Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim The Seven Layers of the OSI Model (Cont.) Lesson Aim Data Encapsulation Lesson Aim Data De-Encapsulation Lesson Aim Peer-to-Peer Communication Lesson Aim Defines four layers Uses different names for Layers 1 through 3 Combines Layers 5 through 7 into single application layer TCP/IP Stack Lesson Aim Transport Layer Session multiplexing Segmentation Flow control (when required) Connection-oriented (when required) Reliability (when required) Reliable vs. Best-Effort Comparison UDP Characteristics Operates at transport layer of OSI and TCP/IP models Provides applications with access to the network layer without the overhead of reliability mechanisms Is a connectionless protocol Provides limited error checking Provides best-effort delivery Has no data-recovery features UDP Header TCP Characteristics Transport layer of the TCP/IP stack Access to the network layer for applications Connection-oriented protocol .