Token Passing - Controlled Access Protocol

Duration: 4 min

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Module outline

  1. Paper 1 | Reasoning Test: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Puzzle Solving (Puzzles), Venn Diagram, Analogy, Ranking, Order and Sequence, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Selection Decision Table (Decision Making), Logical Sequence Of Words, Cubes & Dices, Analytical Reasoning (Counting Figures Reasoning), Calendar, Alphabet and Word Tests, Numerical Reasoning, Number System, Averages, Mixtures and Alligation, Percentages, Series Completion, Analogy and Classification, Patterns in Two-Dimensional Figures, Coding and Decoding, Mathematical Operations, Direction Sense, Algebra, Logical Deduction and Induction, Syllogisms and Venn Diagrams, Critical Reasoning, Order, Ranking and Sequence, Reading Comprehension, Profit, Loss and Discount, Constraint Puzzles, Speed, Time and Distance, Traverse Surveying, Ratio and Proportion, Time and Work, Mensuration, Permutations and Combinations, Clocks and Calendars, Data Interpretation, Assembling and Grouping of Shapes, Transformation of Shapes, Three-Dimensional Patterns and Visualization, Cubes and Dice, Vocabulary, Blood Relations, Data Sufficiency
  2. Paper 1 | Numerical Analysis: Number System, HCF LCM, Percentage, Ratio and Proportion (Ratios), Average, Sequence and Series (Series), Powers and Exponents (Surds and Indices), Algebra, Statistics, Data Interpretation, Mental Ability, Arithmetic, Logarithm, Profit and Loss, Simple Interest and Compound Interest, Speed Time and Distance, Mixture and Alligation, Mensuration and Geometry, Permutation and Combination, Probability, Sequences and Series, Powers, Surds and Logarithms, Subject-Verb Agreement, Sentence Completion, Geometry, Sentence Structure and Correction, Data Sufficiency, Trigonometry, Measurement and Quantity Take-Off, Signal Space and Optimum Detection, Probability, Statistics, Algebra, Time and Work, Speed, Time and Distance, Data Interpretation, Graph Theory, Combinatorics
  3. Paper 1 | General Knowledge: State Wise GK, History, Geography, GK- Current Affairs, Static General Knowledge, Polity, Indian Economy
  4. Paper 1 | DBMS: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Transaction Management, Concurrency Control, Relational Calculus, Database Security & Authorization, Database Recovery
  5. Paper 1 | Data Communication & Network: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Network Security, Security in Mobile and Wireless Computing, Input Output Organisation, File Management, Hardware Basics, Terms & Abbreviations, Protocols & Services, Network Access Technologies, Cyber Safety and Security, Basics of COA
  6. Paper 2 | System Analysis & Design: Fundamentals of Systems and Information Systems, SDLC and Development Approaches, Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Documentation and Software Requirements Specification (SRS), SDD and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, Security, Risk Management & Maintenance, extras
  7. Paper 2 | Programming Language (Java): Java Fundamentals, OOPS with Java, Array, String, IO & References, Generic & Collections, Multithreading, Java, Miscellaneous, Control Flow, OOPS with C++, Stack, C Fundamentals, Arrays & Pointers, Object Oriented Technology, Control Flow & Looping, Introduction to Python
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture introduces Token Passing as a controlled access protocol where network stations are organized in a logical ring structure. The instructor explains that each station has a predecessor and successor, with access rights passed sequentially after data transmission. Visual aids display four distinct network topologies: Physical ring, Dual ring, Bus ring, and Star ring. A special packet called a token circulates through the ring, granting the holder the right to access the channel and send data. When a station finishes transmitting or has no more data, it releases the token for the next successor in the sequence. The diagrams illustrate how data flows between numbered stations across different physical layouts, emphasizing that logical ring organization can exist on various physical configurations.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The lecture begins by defining Token Passing as a controlled access protocol where stations form a logical ring. The instructor explains predecessor and successor relationships, noting that access rights transfer after data transmission. Visual aids show four topologies labeled a through d: Physical ring, Dual ring, Bus ring, and Star ring. The presenter gestures toward diagrams while explaining how the token circulates through the network structure.

  2. 2:00 – 4:10 02:00-04:10

    The instructor elaborates on token circulation mechanics, stating that a special packet called a token grants channel access rights. The slide text reads: "In this method, a special packet called a token circulates through the ring." Diagrams illustrate data flow paths between numbered stations. The speaker points to each topology diagram while explaining how the token moves from one station to its successor, ensuring orderly access without collisions.

Token Passing operates as a controlled access protocol where network stations are logically arranged in a ring, regardless of their physical layout. The core mechanism involves circulating a token—a special packet that grants transmission rights—to each station in sequence. Stations must wait for the token before sending data, preventing collisions and ensuring fair access. The lecture demonstrates that this logical ring can be implemented across four physical topologies: Physical ring, Dual ring, Bus ring, and Star ring. Each topology maintains the logical predecessor-successor relationship essential for token circulation.

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