SubNetting Example

Duration: 5 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 demonstrates subnetting the network 200.1.2.0 into four subnets using a quadrant circle diagram. The instructor identifies the required subnet bits, calculates block sizes and host ranges in binary/decimal, and summarizes each subnet's address range and usable hosts.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The slide states the problem: “Consider we have a big single network having IP Address 200.1.2.0. We want to do subnetting and divide this network into 4 subnets.” The instructor underlines “200.1.2.0” and “into 4 subnets,” then draws a large circle on the whiteboard, crossing it with vertical and horizontal lines to form four quadrants tagged 0–3. Above the circle, bit groups are marked “24,” “8,” and “2,” indicating the original /24 host portion is split into 2 subnet bits and 6 host bits. The first quadrant begins with “200.1.2.”

  2. 2:00 – 4:54 02:00-04:54

    The instructor fills the four quadrants with subnet calculations. Binary host patterns such as “0111 11” = 63 and “10 111 1” = 127/191 are written to find broadcast addresses. The formula “64 − 2 = 62” appears for usable hosts per subnet. Final quadrant labels “1st Subnet” through “4th Subnet” list ranges [200.1.2.0, 200.1.2.63], [200.1.2.64, 200.1.2.127], [200.1.2.128, 200.1.2.191], and [200.1.2.192, 200.1.2.255], with “Total number of IP Addresses = 2^6 = 64” and broadcast examples like “200.1.2.00111111 = 200.1.2.63.”

The lesson centers on dividing a /24 network into 4 subnets by borrowing 2 bits from the host field, leaving 6 host bits. The circle diagram maps subnet IDs to quadrants and supports binary-to-decimal conversion for block boundaries. Key results: 64 addresses per subnet, 62 usable hosts, and four contiguous ranges from .0 to .255. The method shown is a practical GATE-style subnetting workflow: identify bits, compute block size, derive broadcast addresses, and list valid host ranges.

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