CCNA Chapter 1 OSI 7 layer model Application File‚ Print‚ database‚ apps‚web Presentation Encryption‚ compression‚ translations‚ ebdic etc. Session Dialog control - nfs‚ sql‚ rpc ‚ Connection establishment‚ data transfer‚ connection release Transport End to end connection‚ Flow control‚ Data integrity‚ Retransmissions Segments re-ordered before delivery‚ Make / tear down virtual circuits Network Routing ‚ Map of network (logical) Data Link Framing Ensures messages delivered to correct
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business that has responsibility. Having infrastructure security is vital in order to ensure the integrity and stability of the network for Layer 1. Infrastructure Physical Media Layer 1 is the physical layer of a network according to the OSI model. Electricity in this layer is the most fundamental because all of the networking equipment‚ devices‚ and open network equipment is dependent on electricity to deliver power to those devices. This layer represents the physical media that is used
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geographic distances than a LAN link traverses. ← A WAN often relies on the services of carriers‚ such as telephone or cable companies‚ but a LAN does not. ← All WAN implementations generally use the same Layer 2 protocol but there are many accepted LAN Layer 2 protocols in use. 1.1.3 The Evolving Network Model Which statement is true of the functionality of the layers in the hierarchical network model? ← The purpose of the access layer is to provide very high bandwidth communications
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the ISO – OSI layer model of data communications. 4. Explain the Physical layer functions and various Wired media in detail. 5. Differentiate the connection oriented and connection less data service. 6. Explain the radio wave communications in detail. UNIT II 1. What are the various Local area networks? 2. Explain the pure-ALOHA‚S-ALOHA and Reservation ALOHA. 3. Explain Ethernet: CSMA/CD LAN‚ Token passing Bus and Token Ring in detail. 4. Explain the various Data link protocols. (Simplex
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analog signals. Identify the various transmission media and topologies used in telecommunications networks. Understand the fundamentals of wireless network technologies. Explain the concepts behind TCP/IP. Understand the seven layers of the OSI network model. Reference Introduction To Information Systems‚ 16th Edition‚ Marakas & O’Brien‚ The McGraw-Hill Company‚ Inc. The Networked Enterprise Networking The Organization Telecommunications and network technologies are internetworking
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physical layer‚ data link layer‚ and network layer in network transmissions of vital importance. This paper will be discussing in the physical layer‚ the contrast of circuit switching and packet switching; in the data link layer‚ sliding window protocols and the data link layer in the internet; and for the network layer‚ virtual circuits and datagram will be discussed as well as the purpose of routing algorithms. The physical layer is the hardware of the system and can consist of a network
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Bridges Routers Gateways‚ 2014 Proceedings of the ECMWF Workshop on Ensemble Prediction‚ 7-9 November 2007. Reading: European Centre for Medium-Range Weather Forecasts‚ 2008. Print. Retrieved September 17‚ 2014 Surbone‚ Antonella‚ and MatjǎzZwitter The OSI Model ’s Seven Layers Defined and Functions Explained‚ February 27‚ 2002. Available Online [http://support.microsoft.com/kb/103884] Retrieved September 9‚ 2014
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Applications and Products (SAP) and terminals to workstations over a small geographic area. Duvv Enterprises will also touch basis with the implementation of a complete WLAN networking environment that calls also for the installation of Voice-Over-Internet-Protocol (VOIP)‚ and the design of a high-speed Wide Area Network (WAN) that will enable Packet Filters (PF)‚ or firewalls to connects three other hospitals with Patton-Fuller. Lastly‚ Duvv Enterprises will implement the following three processes: the first
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would be a standard used at the Data Link layer of the Internet or OSI model? k) IP l) TCP m) Ethernet n) HTTP o) FTP _____4. In which layer of the Internet model would the HTTP standard be used? p) physical q) application r) transport s) network t) data link _____5. The network layer of the Internet model uses the _____________ protocol to route messages though the network. u) TCP v)
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IPT HSC Notes Chapter 6 - Multimedia systems Characteristics of media types Text and Numbers: Text: Most common methods for digitally representing text ASCII (American standard code for information interchange) e.g. Unicode systems‚ and EBCDIC (extended binary coded decimal interchange code) IBM mainframe and mid-range computers‚ together with devices communicate with these machines use EBCDIC. The Unicode system of coding text is used more widely and has become the standard for representing
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