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SJSU CS 147 - Network Communication and YOU

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Network Communication and YOUSlide 2What Is A Network Communication?Why Do We Care?Important QuoteTypes Of NetworksLocal Area NetworkWide Area NetworkGlobal Area NetworkISOISO and OSIThe ModelSlide 13Layer 7 - ApplicationLayer 6 - PresentationLayer 5 -SessionLayer 4 -TransportLayer 3 - NetworkLayer 2 - Data LinkLayer 1 -PhysicalPlease Do Not Throw Sausage Pizza AwayThank You For Watching…# 101/14/19CS 147- Computer ArchitectureNetwork Communication and YOUBy Ali Farsio# 201/14/19CS 147- Computer Architecture # 301/14/19What Is A Network Communication?•Process Of Transferring Information from destination to destination•To Be able to Transfer data to almost any place in the world, there are many different methods used•There are different protocols for different necessities needed# 401/14/19Why Do We Care?•We Care because most of use the internet several times a day•We care because all of us want to be able to receive and send information quickly and efficiently•Although most of us are not 100% sure what really goes on…# 501/14/19Important Quote•“That's how it is with people - nobody cares how it works as long as it works”CS 147- Computer Architecture # 601/14/19Types Of Networks•LAN •WAN•GANCS 147- Computer Architecture # 701/14/19Local Area Network•This is a network covering a small geographic area, like a home, office, or building. •Current LANs are most likely to be based on Ethernet technologyCS 147- Computer Architecture # 801/14/19Wide Area Network•WANs are used to connect LANs and other types of networks together, so that users and computers in one location can communicate with users and computers in other locations. •One Common Example is the InternetCS 147- Computer Architecture # 901/14/19Global Area Network•System Will Soon cover All parts of the world by Satellites•Although only at speeds of 492kb/s•The “New” type of networkCS 147- Computer Architecture # 1001/14/19ISO•International Standards Organization (ISO) was first developed in 1984 and is recognized by over 130 countries•Some style of the OSI Model Is Used in Practically All NetworksCS 147- Computer Architecture # 1101/14/19ISO and OSI•International Standards Organization (ISO) have made a model, Open system Interconnection (OSI) model to standardize communications•This Model Is Divided into 7 layers : Application, Presentation, Session, Transport, Network, Data-Link, and Physical LayersCS 147- Computer Architecture # 1201/14/19The ModelCS 147- Computer Architecture # 1301/14/19The ModelCS 147- Computer Architecture # 1401/14/19Layer 7 - Application•This layer supports application and end-user processes•Application Specific •Some Examples are e-mail, Telnet, File TransfersCS 147- Computer Architecture # 1501/14/19Layer 6 - Presentation•This layer encrypts data to be able to be read by different networks•This layer formats and encrypts data to be sent across a network, providing freedom from compatibility problemsCS 147- Computer Architecture # 1601/14/19Layer 5 -Session•This layer establishes, manages and terminates connections between applications•It deals with session and connection coordinationCS 147- Computer Architecture # 1701/14/19Layer 4 -Transport •This layer provides transparent transfer of data between end systems, or hosts•It ensures complete data transfer.CS 147- Computer Architecture # 1801/14/19Layer 3 - Network•This layer provides switching and routing technologies•Routing and forwarding are functions of this layer, as well as addressing, internetworking, error handling, congestion control and packet sequencingCS 147- Computer Architecture # 1901/14/19Layer 2 - Data Link•This is the level of the actual hardware. •It defines the physical characteristics of the network such as connections, voltage levels and timing. •Where To Send As Radio Wave, Light etc…CS 147- Computer Architecture # 2001/14/19Layer 1 -Physical•Data packets are encoded and decoded into bits (Why We Studied Hamming Code!!!)•Routing and forwarding are functions of this layer, as well as addressing, internetworking, error handling, congestion control and packet sequencingCS 147- Computer Architecture # 2101/14/19PleaseDo NotThrowSausagePizzaAwayCS 147- Computer Architecture # 2201/14/19Thank You For


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SJSU CS 147 - Network Communication and YOU

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