Network Solutions for Small and Medium Business Instructor Slides- - - PowerPoint PPT Presentation

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Network Solutions for Small and Medium Business Instructor Slides- - - PowerPoint PPT Presentation

HP ExpertOne Designing & Deploying Network Solutions for Small and Medium Business Instructor Slides- Sample Chapter 1 Designing & Deploying Network Solutions for Small and Medium Business Chapter 1 Network Fundamentals 3


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HP ExpertOne

Designing & Deploying Network Solutions for Small and Medium Business

Instructor Slides- Sample

Chapter 1

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Designing & Deploying Network Solutions for Small and Medium Business

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Chapter 1

Network Fundamentals

3

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  • Describe the OSI seven-layer model.
  • Compare and contrast the OSI and TCP/IP models.
  • Explain the purpose and use of various addressing

methods.

  • Identify common Ethernet technologies.
  • Identify common wireless technologies.
  • Explain basic security concepts.

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Objectives

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OSI Model

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OSI Layer 1 Physical Layer

  • Functionality provided:
  • Transmission media
  • Connector
  • Signal strengths
  • Data encoding
  • Data synchronization
  • Transmission technique

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OSI Layer 2 Data Link Layer

  • Functionality provided:
  • Link control
  • Traffic control
  • Sequencing
  • Acknowledgement
  • Delimiting
  • Error correction
  • Access management
  • The MAC address is

defined at the Data Link layer.

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MAC Address

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OSI Layer 3 Network Layer

  • Functionality provided:
  • Network address
  • Node address
  • Traffic routing
  • Fragmentation/reassembly

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Network Address

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OSI Layer 4 Transport Layer

  • Functionality provided:
  • Segmentation
  • Acknowledgement
  • Traffic control
  • Multiplexing

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OSI Layer 5 Session Layer

  • Functionality provided:
  • Establishing sessions
  • Managing/maintaining sessions
  • Terminating sessions

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OSI Layer 6 Presentation Layer

  • Functionality provided:
  • Character translation
  • ASCII
  • EBCDIC
  • Conversion
  • Compression
  • Encryption

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OSI Layer 7 Application Layer

  • Functionality provided:
  • Remote file and printer access
  • Resource sharing
  • Communications between

processes

  • Electronic messaging and

email

  • Directory services
  • Virtual devices and virtual

communications

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TCP/IP Model

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  • Supports:
  • Implementation of OSI Physical and Data Link layers.
  • Hosts identified by MAC address.
  • A wide range of low-level protocols.
  • Does not support:
  • Sequencing
  • Acknowledgement

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TCP/IP Model Network Interface Layer

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  • Responsible for:
  • network addressing
  • host addressing
  • routing
  • Internet Protocol version 4 (IPv4)

192.168.10.42

  • Internet Protocol version 6 (IPv6)

fe80::d46f:5f6c:bff1:30db

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TCP/IP Model Internet Layer

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ARP Command

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  • Provides datagram services for Application layer

protocols.

  • TCP
  • Connection-oriented protocol
  • Establishes connection between hosts
  • Provides sequencing and acknowledgement
  • Recovers lost packets through retransmission
  • UDP
  • Connectionless protocol
  • One-to-one or one-to-many transmissions

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TCP/IP Model Transport Layer

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  • Information exchange protocols
  • Management protocols
  • Managing and resolving host names with IP addresses
  • Maintaining and sharing route information between routers
  • Automatically providing network configuration information for host

computers

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TCP/IP Model Application Layer

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  • Standard defines:
  • Transmission media and connector types
  • Cable segment lengths
  • Transmission signals (strength and format)
  • Frame format
  • Network access method

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Ethernet

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Network Adapter

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Name Data rate Standard Note 10BaseT 10 Mbps 802.3i Requires two twisted pairs 100BaseT 100 Mbps 802.3u Requires two twisted pairs 1000BaseT 1 Gbps 802.3ab Requires four twisted pairs 10GBaseT 10 Gbps 802.3an Requires four twisted pairs

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Current Ethernet Standards

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Straight-through Cable

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