OSI Layers and the Learning Over view Management System

A Learning Management System is an applicaon located on a local network or the Internet, developed for the employment of electronic educaonal technology by students across distances from a building with mulple rooms to the world wide community.

Student Registraon Repository

Live Chat Live Video Seminars Tests

LMS E-mail NETWORK OF USERS Test Scores & Records Courses USER Course Schedule Learner Progress Tracker

Learning Content Management System OSI Layers and the Learning Management System

DEVICE DEVICE

CABLE MODEM

FREQUENCY CABLE The physical layer supports the actual movement of bits and volts between devices (smart phone, computer, tablet, modem, repeater) through copper wire, fiber opc cable, radio frequencies, or any other medium used to transmit data by a MODEM physical means. The physical layer is not concerned with the structure or organizaon of data, it is simply transming and receiving the data. Some devices funcon on other layers

of the OSI model, so they do not fit neatly into physical layer because they conduct a CABLE funcon beyond simply moving bits and volts. However, all devices parally operate CABLE in the physical layer, but it is their primary funcon that solidly places them in one of CABLE REPEATER the other layers. REPEATER MODEM DEVICE OSI Layers and the Learning Management System WIDE AREA NETWORK or LOCAL AREA NETWORK NODE NODE

NIC NIC

FRAMES—FRAMES—FRAMES—FRAMES FRAMES—FRAMES—FRAMES SWITCH / BRIDGE

The data link layer is divided into two sub-layers; (LLC) and Media Access Control (MAC). The LLC sub-layer controls data flow, address noficaon, and NODE corrects errors in data arrangement. The MAC sub-layer controls device access to the network media, and establishes the organizaon of raw data by encapsulang data through frame synchronizaon. Frames can only move between nodes within the same network and with a physical address. Protocols operang in the data link layer are Point-to-Point and Ethernet. Switches and Bridges are devices ulized in this

layer. NIC FRAMES—FRAMES—FRAMES—FRAMES

FRAMES—FRAMES—FRAMES—FRAMES OSI Layers and the Learning

Management System INTERNET

ROUTER

PACKETS—PACKETS—PACKETS—PACKETS--PACKETS PACKETS—PACKETS—PACKETS—PACKETS

ROUTER ROUTER

The network layer enables two or more networks to conduct end-to-end communicaons through data packets ulizing logical addresses. Some protocols ulized in the network PACKETS—PACKETS layer are essenally the foundaon of the Internet. (IP) addresses and PACKETS—PACKETS

routes the packets throughout the network. The Internet Group Management Protocol ROUTER ROUTER (IGMP) enables mulcasng, which permits one network to source many networks, exponenally increasing the sharing and streaming of data. The central device embedded in the network layer is the router, which permits the delivery of packets from the source device to a requesng node. OSI Layers and the Learning Management System

The transport layer facilitates the encapsulaon and de-encapsulaon of data as it transions to and from the lower layers and the upper layers of the OSI model so the data can be transmied as quickly and correctly as possible. Connecon-oriented protocol verifies the desnaon received the data, while Conneconless protocol sends the data with no confirmaon of receipt. Transmission Control Protocol (TCP) ensures receipt of data. (UDP) does not ensure receipt. The transport layer assigns port addressing which assists in geng the data to the correct applicaon. USER DATAGRAM PROTOCOL (UDP) OSI Layers and the Learning Session Layer Management System Ports Port 532 110 & 995/25

Ports 20/21 Port 23 Port 80 The session layer establishes the connecon between different nodes by synchronizing the data and directs the data to the correct logical port. The session layer performs some significant security funcons and provides a logging in process to assist in device user recognion. Once the session is established the various Port 53 RPC protocols, such as Network Basic Input/Output System (NetBIOS) facilitates the Portmapper sending and receiving of data. Logical Ports idenfy paths for specific services such as HTTP, e-mail, video, etc. Ports 161/162 OSI Layers and the Learning Presentaon Layer Management System POP/ USENET SMTP

The presentaon layer translates, compresses and encrypts data for the various applicaons. POP = Post Office Protocol/SMTP = Simple Mail Transfer Protocol are mail servers = is a terminal emulaon program that permits a device to communicate with other servers FTP TELNET NFS = permits the uploading and storage of files on a server HTTP SNMP = Simple Network Management Protocol manages the network and its devices DNS = Domain Name Servers is the phonebook for IP addresses FTP = designed to transfer files from one host to another USENET = A worldwide system for discussions and posng informaon, such as forums HTTP = Hypertext Transfer Protocol is for distribung communicaon data throughout DNS NFS the Internet

SNMP OSI Layers and the Learning Applicaon Layer Management System

Chat Forums E-mail

File Transfer Host Sessions Web App The applicaon layer is the user interface to all of the protocols required by the applicaon soware to communicate on the network. Therefore, a Learning Management System is a large protocol provider, creang a centralized access tool for students to select courses, register for classes, complete assignments, conduct research, discuss topics in open chat, typed forums, or live video Directory File Services conferences, while instructors can post assignments, review students’ progress, Services grade tests, and hold discussions through mulple means of communicaon. Network Management