Fundamentals of Computer Networks

Introduction: Data Communication Networks Protocols and Standards Standards Organizations. Basic Concepts: Line Configuration Topology Transmission mode Categories of Networks Internetworks. The OSI Model: The Model Functions of the layers. Signals: Analog and Digital Analog signals Digital Signals. Encoding and Modulating: Analog-to-Digital Conversion – Digital-to-Analog Conversion. Transmission Media: Guided Media Unguided Media. Error Detection and Correction: Types of Errors Detection Vertical Redundancy Check (VRC) Longitudinal Redundancy Check (LRC) Cyclic Redundancy Check (CRC) Checksum – Error Correction. Data Link Control: Line discipline Flow Control Error Control. Data Link Protocols: Synchronous Protocols Character Oriented Protocols Bit Oriented Protocols. Switching: Circuit Switching Packet Switching Message Switching. Local Area Networks: Project 802 Ethernet Token Bus Token Ring FDDI. TCP/IP Protocol suite Part I: Overview of TCP/IP Network layer Addressing. TCP/IP Protocol suite Part II: File Transfer Protocol Telnet SMTP HTTP. Network Security: Four Aspects of Security Digital signature PGP. ATM Protocol Introduction to Routing.