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