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Slide 1 - TCP/IP Model
- Built around the TCP/IP protocol suite
- A protocol suite is a largenumber of relatedprotocols that worktogether to allownetworkedcomputers tocommunicate
Slide 2 - TCP/IP Model (Continued)
- Layers with same names as OSI Model don’t function exactly the same
Slide 3 - Application Layer of TCP/IP Model
- Encompasses same functions as these OSI Model layers
Slide 4 - Transport Layer of TCP/IP Model
- Functions the same as the Transport layer in OSI Model and part of Session layer
- TCP and other similar protocols take on some of the function of the Session layer
- Synchronize source and destination computers to set up the session between the respective computers
Slide 5 - Internet Layer of TCP/IP Model
- Same functions as OSI Model Network Layer
- Many of the functions of the Logical Link Control sublayer of the OSI Model’s Data Link layer
- Primary protocol is Internet Protocol (IP)
- Also uses Address Resolution Protocol (ARP), which performs much of the LLC sublayer’s job in the area of physical addressing
Slide 6 - Network Interface Layer of TCP/IP Model
- Performs much of the job of the MAC portion of the Data Link and Physical layers of the OSI Model
- TCP/IP Model does not dictate what happens on Network Interface layer
- TCP/IP protocol suite relies on standards created by the various standards organizations concerning how to encode bits onto media to do the work on this layer
Slide 7 - Alternate Layer Name
- CompTIA Network+ objectives recognize alternate layer name for last layer in TCP/IP Model – the Link layer
Slide 8 - TCP/IP Model and its Relation to Protocols
- Different protocols located on the Application layer of the TCP/IP Model connect to different Transport layer protocols
- Exception: DNS protocol on the Application layer connects to both TCP (Transport Control Protocol) and UDP (User Datagram Protocol) protocols on the Transport layer
Slide 9 - Summary
- The OSI Model is a framework and reference model to explain how different networking technologies work together and interact.
- The Physical layer of the OSI Model deals with all aspects of physically moving data from one computer to the next.
- The Data Link layer of the OSI Model is responsible for moving frames from node to node or computer to computer.
Slide 10 - Summary (Continued)
- The two sublayers of the Data Link layer are the LLC and MAC.
- The Network layer of the OSI Model is responsible for moving packets (data) from one end of the network to the other, called end-to-end communications.
- The TCP/IP Model is built around the TCP/IP protocol suite.
Slide 11 - Summary (Continued)
- The Transport layer of the TCP/IP Model functions the same as the Transport layer in OSI Model and part of Session layer.
- The Internet of layer of the TCP/IP Model Performs the same functions as the OSI Model Network layer and many of the functions of the LLC sublayer of the OSI Model Data Link layer.
- The Network Interface layer of the TCP/IP Model performs much of the job of the MAC portion of the Data Link and Physical layers of the OSI Model.
Slide 12 - Self-Assessment Chapter 2
- T/F – The OSI and TCP/IP models are hard and fast rules for everything done in networking
- T/F – The models help to understand what goes on in a network but don’t dictate software and hardware
- T/F - The Application Layer in the OSI model really refers to the type of game you are playing at the time
- How many layers are there in the OSI Model? In the TCP/IP Model?
- What does each of the layers “do” in the OSI Model?
- T/F – The Transport Layer of the OSI Model (also Internet Layer of the TCP/IP Model) handle physical addressing
- Which layer of the OSI model manages setting up the communication the time length of the communication?
- Which layer of the OSI model would be involved in translation of a specific type of object sent?
- If you have trouble with any of these, let me know