Introduction to Networking

Written study notes supporting the introductory networking course. Provides a foundational companion to the more specialized infrastructure planning materials.

Excel workbook cataloged as a network-components pricing reference. Treat cost figures as historical examples rather than current purchasing information.

Broad lecture presentation on data communications, originally identified as CC201. Provides an additional overview to complement the individual chapter presentations.

Introduces data communication, networks, and the terminology used to describe connected systems. Establishes the foundation for the layered models and transmission methods studied in later chapters.

Explains how communication functions are organized into protocol layers. Provides a framework for understanding the responsibilities and relationships of different network services.

Examines how information is represented and transmitted through signals. Introduces signal characteristics and the relationship between the data being sent and the medium carrying it.

Lecture on transmitting digital information, including digital-to-digital conversion. Connects encoding and transmission techniques with the practical requirements of communication channels.

Lecture on carrying information through analog transmission methods. Provides a counterpart to the digital-transmission chapter and explains another approach to sending data over a channel.

Examines ways of sharing and using communication bandwidth. Introduces multiplexing and spreading as techniques for organizing transmissions and supporting multiple communications.

Lecture on the media used to carry signals between devices. Relates transmission-channel choices to the physical requirements of a communication system.

Introduces switching as a way to move information through interconnected networks. Explains the role of intermediate systems in establishing communication between endpoints.

Examines how telephone and cable infrastructure can support data communication. Provides background for understanding access networks built on existing communications services.

Lecture on identifying and dealing with errors introduced during transmission. Explains the role of additional information and coding in improving communication reliability.

Examines control functions at the data-link layer. Connects the exchange of frames with the coordination needed for dependable communication over an individual link.

Introduces approaches that allow multiple stations to use a shared communication medium. Explains why access must be coordinated when several devices compete to transmit.

Lecture on Ethernet as a wired local-area networking technology. Connects LAN communication with the protocols and architecture used to link nearby devices.

Introduces local-area communication over wireless links. Provides a foundation for comparing wireless networking with the wired LAN approaches in the preceding chapter.

Examines how local networks are interconnected and organized into larger structures. Introduces backbone networks and VLANs as ways to support network organization and communication.

Lecture on wide-area wireless communication through cellular and satellite systems. Explains how wireless connectivity extends beyond the geographic range of a local network.

Introduces the SONET and SDH transport systems used in telecommunications infrastructure. Provides historical background for high-capacity backbone transmission.

Examines Frame Relay and ATM as virtual-circuit networking approaches. Provides historical context for wide-area services and the organization of traffic through connection-oriented network structures.

Lecture on identifying systems through logical network addresses. Connects addressing with the delivery of data across interconnected networks.

Examines Internet Protocol as a foundation of internetwork communication. Relates protocol functions to addressing, packets, and delivery across networks.

Lecture on network-layer functions that support addressing and communication. Connects address mapping and error reporting with the additional requirements of sending traffic to groups.

Explains how networks deliver packets and choose the next step toward a destination. Distinguishes forwarding decisions from the routing processes that establish paths.

Lecture on transport protocols that support communication between applications. Compares approaches to delivering data beyond the host-to-host service of the network layer.

Examines the effects of traffic demand on network performance. Introduces control and service-quality mechanisms for managing capacity and meeting application requirements.

Introduces DNS as the system connecting readable names with network information. Explains the naming service that supports access to Internet hosts and applications.

Lecture on application services for remote access, messages, and moving files. Shows how network applications build on lower-layer communication services.

Introduces the web and its communication protocol. Connects browser and server interactions with the retrieval of networked information.

Lecture on managing networked systems through the Simple Network Management Protocol. Provides context for monitoring devices and accessing management information.

Examines the delivery of multimedia over networks. Connects application needs with timing, throughput, and service-quality considerations.

Introduces cryptographic approaches to protecting information. Provides the foundation for the network-security services and protocols in the final chapters.

Lecture on protecting network communications and resources. Connects cryptographic foundations with broader security requirements and mechanisms.

Examines security mechanisms used at different points in Internet communication. Brings together protocol protection, secure messaging, private networking, and traffic filtering.

Foundational lecture introducing networking concepts and the role of connected systems. Provides a starting point for the CIS175 chapter sequence.

Lecture on networking standards and layered communication. Explains the framework used to organize the functions of network hardware and software.

Lecture introducing protocols and their role in communication between systems. Provides background for the Internet and network-operating-system material that follows.

Lecture on media and data transmission, including the physical characteristics of network cabling. Compares media choices and their benefits and limitations.

Lecture on media and data transmission, including the physical characteristics of network cabling. Compares media choices and their benefits and limitations.

Lecture on network architecture and the organization of local-network communication. Use the two parts together to review the chapter material.

Lecture on network architecture and the organization of local-network communication. Use the two parts together to review the chapter material.

Lecture on network interface cards and LAN connectivity equipment. Covers devices such as repeaters, hubs, bridges, switches, routers, and gateways.

Lecture on network interface cards and LAN connectivity equipment. Covers devices such as repeaters, hubs, bridges, switches, routers, and gateways.

Lecture comparing LANs and WANs and examining links, transmission methods, media, topology, and remote access. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Historical lecture on network operating-system selection, Windows NT Server, installation, users, groups, rights, and interoperability. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Historical lecture on Novell NetWare, server requirements, file and directory structures, installation, and interoperability. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Lecture on UNIX history, implementations, commands, server use, and Linux installation. Includes user and group administration and file permissions. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Lecture on TCP/IP addressing, subnetting, gateways, ports, domains, and Internet communication. Explains concepts that connect hosts with applications and network services.

Lecture on TCP/IP addressing, subnetting, gateways, ports, domains, and Internet communication. Explains concepts that connect hosts with applications and network services.

Lecture on a structured troubleshooting method and diagnostic tools. Covers identifying symptoms, establishing scope, reproducing problems, and checking physical connections. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Lecture on baseline analysis, hardware and software maintenance, network upgrades, and planning for change. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Lecture on protecting data from damage and loss through virus protection, fault tolerance, backups, recovery, and disaster planning. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Lecture on LAN and WAN risks, physical security, system safeguards, and security policies. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Lecture on needs assessment, project planning, resource management, pilot networks, and implementation. Includes task dependencies, timelines, milestones, and stakeholder communication. Verified alternate CIS175 chapter file replacing an unavailable Network+ reference.

Course outline and requirements for the historical Network Analysis and Design class. Use this document to orient your study of the chapter presentations.

Presentation introducing a top-down approach to network design. Uses a university network example to connect requirements, OSI layers, organizational factors, and technical decisions.

Publisher page for the course textbook, with book details and related resources. The link uses the current destination of the historical Cisco Press address.

LAN hardware and software, connectivity, client/server analysis and design, and logical and physical architectures. This is the subject of the presentation stored as TopDownDes.ppt.

Opening lecture on top-down network design and customer requirements. Connects business needs with availability, scalability, affordability, security, and manageability goals.

Lecture on scalability, availability, performance, security, usability, and affordability. Explains how to analyze tradeoffs and plan for growth in network design.

Lecture on assessing the network already in place before proposing a design. Covers network maps, devices, segments, addressing, cabling, performance, and environmental constraints.

Identify user communities, data stores, traffic sources and destinations, flow patterns, and performance requirements. Connects application behavior and user needs with capacity planning and design choices.

Lecture comparing flat, mesh, and hierarchical network topologies. Introduces the core, distribution, and access layers used in hierarchical network design.

Develop structured addressing and naming policies, allow room for growth, and organize network and subnet assignments. Explains how consistent policies make a growing network easier to operate and document.

Choose protocols for the logical network design and evaluate how bridging, switching, and routing support design goals. Links protocol selection with the functional requirements of the logical network design.

Identify assets and risks, assess security tradeoffs, and plan network protection, monitoring, and management. Combines protective measures with the operational processes needed to maintain the network.

Choose campus LAN technologies, devices, and cabling, with attention to availability, scalability, and physical layout. Connects physical design choices with building layout, existing infrastructure, and expected service life.

Evaluate WAN and remote-access technologies, protocols, routers, and switches against business and technical requirements. Relates device and service selection to bandwidth, quality of service, topology, and remote users.

Use industry test results, prototype networks, modeling, and performance measurements to validate the proposed design. Shows how testing can uncover weaknesses before a full deployment.

Lecture on improving bandwidth use and meeting quality-of-service requirements. Includes IP multicast techniques for multimedia, conferencing, and other demanding applications.

Lecture on design proposals, customer requirements, and implementation documentation. Explains the contents of a network design document and how to respond to a request for proposals.

Lecture on wireless LAN applications, technologies, and IEEE 802.11 architecture. Includes LAN extension, building interconnection, and Wi-Fi security.

IPv6 addressing and headers, hierarchical routing, network infrastructure requirements, and migration from IPv4. Treat platform and deployment details as historical examples from the presentation period.