Fundamental Of IP Addressing

Duration: 8 min

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Module outline

  1. Discrete Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic
  2. DataBase Management System/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, Relational Calculus, Transaction Management, Concurrency Control
  3. Digital Electronics: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation
  4. Computer Architecture: Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design
  5. Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management
  6. C Language: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  7. Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  8. Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  9. Computer Networks: Introduction to CN, 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, Hardware Basics
  10. Theory Of Computation/Automata Theory: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory
  11. Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  12. Engineering Mathematics: Permutation and Combination, Linear Algebra, Calculus, Probability, Statistics
  13. General Aptitude: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Percentage, Mensuration and Geometry, Mental Ability, Arithmetic, Profit and Loss, Powers and Exponents (Surds and Indices), Average, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Syllogisms, Venn Diagram, Seating Arrangements, Blood Relations, Directions (Direction Test), Analogy, Algebra, Time and Work, Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Cubes & Dices, Ranking, Order and Sequence, Mixture and Alligation, Age Problems, Clock, Selection Decision Table (Decision Making), Data Arrangement
  14. English (Verbal Aptitude): Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Pronoun, Preposition, Direct and Indirect Speech, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Completion (Fill in the blanks), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Correction (Error Correction), Verbal Analogy (Word Based Analogy), Conjunction, Interjection, Verb, Articles, Adverb, Modals, Sentence Construction
  15. Live Classes Recordings(Earlier Batch): GATE 2026 Live Class
  16. Full Mock Test:
  17. Previous Year Papers:
  18. GATE 2026 Counselling: Counselling and Guidance Sessions
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture introduces classful IPv4 addressing, explaining that a 32-bit address is hierarchically divided into two parts: a prefix (NetworkID) of n bits that identifies the network, and a suffix (HostID) of 32 − n bits that identifies the host connection. The instructor uses a slide diagram showing the prefix/suffix split and a router-to-laptops topology, then extends the explanation with handwritten binary grids on a whiteboard. The lesson progresses to the five address classes (A, B, C, D, E), noting fixed prefix lengths and first-byte ranges such as Class A: n = 8 bits, first byte 0 to 127. It concludes by stating that classful addressing is obsolete and has been replaced by classless addressing.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The opening slide, titled 'Classful Addressing,' states that IPv4 at its inception used classes. A 32-bit address is divided into two parts: the prefix (NetworkID) and suffix (HostID). A central bar diagram labels the Prefix as 'n bits' and the Suffix as '(32 − n) bits,' with arrows to a router-and-laptops figure captioned 'Defines network' and 'Defines connection to the node.'

  2. 2:00 – 5:00 02:00-05:00

    The instructor elaborates on the prefix/suffix split, emphasizing that the prefix defines the network and the suffix defines the node. On a whiteboard to the right, handwritten binary grids represent address bits; the instructor uses a pointer to highlight specific digits, visually breaking down how n prefix bits and 32 − n suffix bits combine into a full address.

  3. 5:00 – 7:33 05:00-07:33

    The slide transitions to the five address classes A, B, C, D, and E. A table lists prefix lengths and first-byte ranges; visible text includes 'Class Prefixes First byte' and the row 'A n = 8 bits 0 to 127.' The instructor points to the table and notes that classful addressing is now obsolete, having been replaced by classless addressing.

The lecture builds from the abstract two-part model of an IPv4 address to concrete class boundaries. First, it establishes that a 32-bit address is hierarchical: the prefix identifies the network and the suffix identifies the host, with lengths n and 32 − n. The router-laptop diagram grounds this in a physical topology. Next, the whiteboard binary grids make the bit-level structure tangible by showing how individual bits map to prefix and suffix. Finally, the five-class table (A–E) introduces fixed prefix lengths and first-byte ranges, exemplified by Class A with n = 8 bits and first byte 0–127. The closing point is that this fixed-class design is obsolete and has been superseded by classless addressing. For revision, students should remember the prefix/suffix definition, the n and 32 − n relationship, the five classes, and the Class A first-byte range as a concrete anchor.

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