Address Depletion in ClassFull Addressing

Duration: 6 min

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Module outline

  1. Quantitative Ability: Percentage, Profit and Loss, Ratio and Proportion (Ratios), Average, Time and Work, Speed Time and Distance, Simple Interest and Compound Interest, Age Problems, Number System, Divisibility Rules, HCF LCM, Algebra, Permutation and Combination, Probability, Data Interpretation, Logarithm, Sequence and Series (Series), Powers and Exponents (Surds and Indices), Speed Mathematics and Basic Mathematics
  2. Logical Reasoning: Seating Arrangements, Puzzle Solving (Puzzles), Data Arrangement, Coding Decoding, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Data Sufficiency, Venn Diagram, Inequality, Series (Number and Letter Series) (Numerical Relations and Reasoning), Logical Sequence Of Words, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Analogy, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning)
  3. Verbal Ability: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Subject Verb Agreement (Verb Noun Agreement), Tenses, Articles, Preposition, Conjunction, Modals, Active Passive Voice (Voice), Direct and Indirect Speech, Vocabulary, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Completion (Fill in the blanks), Sentence Correction (Error Correction), Cloze Test (Cloze Passage), Facts, Inference and Judgements
  4. Programming Fundamentals (Technical): C Fundamentals
  5. Data Structures (Technical): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  6. Algorithms (Technical): Algorithm Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Time Complexity Analysis, Advanced Algorithms
  7. OOPs (Technical): Object Oriented Programming (OOPS)
  8. DBMS (Technical): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  9. SQL (Technical): SQL
  10. Operating Systems (Technical): Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  11. Computer Networks (Technical): 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, Hardware basics, Network Security, Cloud Computing and IoT, Cyber and Info Security
  12. Software Engineering (Technical): Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  13. Coding/Automata Round: Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir, Pseudo Codes
  14. Personality / Behavioral Assessment: Behavioral Assessment (Behavioral Competency Profiling) (Psychometric Test)
  15. Writing Assessment: English Writing Ability
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture introduces address depletion in classful IP addressing and transitions to classless addressing. It explains that Class A and B are too large, Class C is too small, and lack of flexibility causes waste (e.g., needing 50 IPs forces allocation of 256). Class E addresses are noted as almost never used. The conclusion is that rapid address use-up left no more for new connections. Classless addressing removes class privileges, allowing variable-length blocks and exact allocation requests. CIDR notation is introduced with slash notation (e.g., 12.24.76.8/8), where the prefix length identifies block and host IDs. A diagram shows a 32-bit address split into n bits (prefix) and 32-n bits (suffix). The number of addresses is N = 2^(32-n); the first address sets suffix bits to 0, and the last address sets them to 1. The instructor writes numbers 73-76 on the board and uses a pie chart to illustrate distribution.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The slide titled 'Address Depletion' lists problems with classful addressing: improper distribution (Class A/B too large, Class C too small), lack of flexibility (a company needing 50 IPs must take 256, causing waste), and wastage of Class E addresses. The instructor explains these points using bullet points and a specific numerical example, concluding that the Internet faced rapid address use-up with no more available for new connections.

  2. 2:00 – 5:00 02:00-05:00

    The lecture shifts to 'Classless Addressing (Blocks/Network),' an improved IP system that removes class privileges to compensate for depletion. Variable-length blocks are assigned based on exact requirements. The instructor writes numbers 73, 74, 75, 76 on the board and uses a pie chart to illustrate distribution. CIDR notation is introduced with slash notation (e.g., 12.24.76.8/8), where the prefix length identifies block and host IDs. A diagram shows a 32-bit address split into n bits (prefix) and 32-n bits (suffix), with N = 2^(32-n) addresses, first address by setting suffix to 0s, and last address by setting them to 1s.

  3. 5:00 – 5:39 05:00-05:39

    The final segment reinforces extracting information from an address using prefix length n. The instructor writes 2^(32-n) on the board to represent the number of addresses and explains that n represents the number of bits in net_id. The slide transitions to CIDR notation, reiterating that classless interdomain routing uses slash notation (e.g., 12.24.76.8/8) to identify block and host IDs, with a diagram visualizing prefix and suffix bits.

The lecture progresses from identifying the limitations of classful addressing to presenting classless addressing as a solution. Key concepts include address depletion, lack of flexibility in classful allocation, and the introduction of CIDR notation. The central method involves using prefix length to determine block size (N = 2^(32-n)) and extracting first/last addresses by manipulating suffix bits. The instructor uses visual aids (pie chart, board writing) and specific examples (50 vs 256 IPs, 12.24.76.8/8) to clarify abstract concepts. The transition from classful to classless is framed as a response to address waste and depletion, emphasizing variable-length blocks over fixed classes.

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