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Understanding Computer Network Communication: The OSI Model and TCP/IP, Exams of Wireless Networking

Tennessee Technology of Applied Technology - HohenwaldWireless Networking

A comprehensive overview of the osi (open systems interconnection) model and the tcp/ip (transmission control protocol/internet protocol) suite, which are fundamental concepts in computer networking. The osi model is a conceptual framework that divides network functions into seven distinct layers, each with its own protocols and responsibilities. The document delves into the role and functionality of each layer, from the application layer to the physical layer. It also explores key networking concepts such as encapsulation, sequencing, flow control, and various protocols like tcp, udp, and ipx/spx. This information is crucial for understanding how computer-to-computer communication is structured and how data is transmitted over networks, particularly the internet. A solid foundation for students and professionals interested in computer networking, network administration, and related fields.

Typology: Exams

2024/2025

Available from 10/18/2024

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OSI Model ✔✔model for understanding and developing computer-to-computer communication;
divides networking functions among 7 layers
Application, Presentation, Session, Transport, Network, Data Link, Physical
TCP/IP ✔✔Transmission Control Protocol/Internet Protocol. Protocol that connects computers
to the Internet. Tells computers how to exchange information over the Internet.
Application Layer ✔✔Layer 7 of the OSI model. The network layer that houses the applications
that allow users to access the network. It contains five categories of services, File services, e-
mail services , network printing services, Application services and database services.
Presentation Layer ✔✔The sixth layer of the OSI model. Protocols in the Presentation layer
translate between the application and the network. Here, data are formatted in a schema that the
network can understand, with the format varying according to the type of network used. The
presentation layer also manages data encryption and decryption, such as the scrambling of
system passwords.
OSI Model LATEST UPDATE 2025 WITH VERIFIED Questions and
Answers 100% Pass
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OSI Model ✔✔model for understanding and developing computer-to-computer communication; divides networking functions among 7 layers Application, Presentation, Session, Transport, Network, Data Link, Physical TCP/IP ✔✔Transmission Control Protocol/Internet Protocol. Protocol that connects computers to the Internet. Tells computers how to exchange information over the Internet. Application Layer ✔✔Layer 7 of the OSI model. The network layer that houses the applications that allow users to access the network. It contains five categories of services, File services, e- mail services , network printing services, Application services and database services. Presentation Layer ✔✔The sixth layer of the OSI model. Protocols in the Presentation layer translate between the application and the network. Here, data are formatted in a schema that the network can understand, with the format varying according to the type of network used. The presentation layer also manages data encryption and decryption, such as the scrambling of system passwords.

OSI Model LATEST UPDATE 2025 WITH VERIFIED Questions and

Answers 100% Pass

Session Layer ✔✔The fifth layer in the OSI model. The Session layer establishes and maintains communication between two nodes on the network. It can be considered the "traffic cop" for network communications. Transport Layer ✔✔4th layer; protocols ensure that data are transferred from point A to point B reliably and without errors; services include flow control, acknowledgment, error correction, segmentation, reassembly, and sequencing Network Layer ✔✔The third layer of the OSI model. Protocols in the Network layer translate network addresses into their physical counterparts and decide how to route data from the sender to the receiver. DataLink Layer ✔✔Gives unique identities to senders and receivers. Organizes data packets into frames for transmission Layer 2 Physical Layer ✔✔The lowest, or first, layer of the OSI model. Protocols in the physical layer generate and detect signals so as to transmit and receive data over a network medium. These protocols also set the data transmission rate and monitor data error rates, but do not provide error correction.

IPX/SPX ✔✔a protocol suite used by Novell. This is an antiquated protocol that is rarely seen now that Novell has moved to TCP/IP. TCP ✔✔A networking protocol that uses packet switching to facilitate the transmission of messages; the protocol used with the Internet. UDP ✔✔A connectionless protocol for fast transport but no guarantee of delivery. Connectionless ✔✔A type of Transport layer protocol that services a request without requiring a verified session and without guaranteeing delivery of data. Connection Oriented ✔✔A type of Transport layer protocol that requires the establishment of a connection between communicating nodes before it will transmit data. Session ✔✔A single communication or connection for data exchange between two computers. The term session may be used in the context of Web, remote access or terminal and mainframe communications, for example.

API ✔✔application programming interface specifies a software component in terms of its operations, their inputs and outputs and underlining types. Packet ✔✔A small unit of data transmitted over a network. Segment ✔✔A unit of data that results from subdividing a larger protocol data unit Frame ✔✔Encloses the segment in a network MAC Address ✔✔A permanent address given to each network interface card (NIC) at the factory. This address enables the device to access the network via a Level- 2 protocol. No two NIC devices will ever have the same MAC address. Also called a physical address. IP Address ✔✔A number assigned to a device connected to the Internet. Websites use this to send the information you want back to your computer from nearby or all the way around the world. A website name is converted to an IP address number so the computer can locate it. Checksum ✔✔A method of error checking that determines if the contents of an arriving data unit match the contents of the data unit sent by the source.