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Network + Chapter 2

network +; fifth edition chapter 2

QuestionAnswer
What does ISO, stand for? International Organization for Standardization
What is ISO, most known for? ISO Model
What does OSI in the OSI Model stand for stand for, and what does it represent? OSI is short for OPEN SYSTEMS INTERCONNECTION. It represents the 7 layers of network communication.
What are the 7 layers of the OSI Model? Bottom to top, bottom layer being #1 Physical, #2 Data Link, #3 Network, #4 Transport, #5 Session, #6 Presentation, and #7 application. Tip to remember: All - People - Should - Trade - Nude - Data - Pics (top to bottom)
What is the data encapsulation process? Data - Segment - Packets - Frames - Bits Process of Information sent from node across medium. HINT: Don't smoke pot for breakfast
What are PDUs (protocol data units)? Are discrete amounts of data
Layer 7 Application Layer Interface between the user and computer. Provides services that directly support user applications. IE E-mail, File Transfer, Terminal Emulation, Database Access. Common Corresponding Protocols= SNMP, FTP, TELNET, WWW, HTTP, SMB, NCP, TCP, TFTP, NFS,
Layer 6 Presentation Layer Translation of data into understandable format for transmission. Encodes and Decodes data. Common Corresponding Protocols= JPEG, MIDI, MPEG, ALL MOVIE, MUSIC, PICS, FORMATS, NCP
Layer 5 Session Responsible for opening, closing, and using session. Allows communication between 2 or more nodes on network. Provides synchronization between communicating nodes. Common Protocols= File System(NFS), SQL, RPC
Layer 4 Transport Layer Responsible for packet handling. Ensures error free delivery. Repacks and divides messages into smaller packets(fragments and reassembles data. Handles error handling. Protocols= TCP, UDP, SPX, NETBEUI
Layer 3 Network Layer Logical addressing. Routing of message packets between host(IP\IPX) HARDWARE: Routers, Brouters Protocols= IP, IPX, RIP, ICMP, ARP, RARP, OSPF, EGP, IGMP, NETBEUI, DLC, DecNET
Layer 2 Data Link Layer Provides flow of data over a single link from 1 device to another. Packets placed into frames at this layer. Identifies specific computer on network. Error Detection, Mac address are resolved. Data frames are sent between layers.
Data Link layer has 2 sub layers, LLC & MAC. Logical Link Control and Media Access control.
Layer 1 Physical bits on the wire Hardware= Hubs, Repeaters, Amplifiers, Transceivers, multiplexers, recevivers, transmitters, connectors, cables, switches
802.3 Ethernet LAN= All forms of ethernet media and interfaces.
802.5 Token Ring LAN= All forms of token ring media and interfaces
802.11 Wireless Network= Standards for wireless networking for many different frequencies and user techniques
802.15 Wireless personal area networks= The coexistence of wireless personal area networks with other wireless devices in unlicensed frequency bands
802.16 broadband wireless metropolitan area network= the atmospheric interface and related functions associated with broadband wireless connectivity aka WiMax
Created by: grabber78