CIDR Practice Question_

Duration: 5 min

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Inside: a video lesson and guided study material.

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.

The video is a tutorial on subnetting using Classless Inter-Domain Routing (CIDR). The instructor starts with a specific problem: dividing the network 40.30.20.10/25 into two subnets. He demonstrates the process by converting the IP address to binary, identifying the network and host portions, and borrowing bits to create the subnets. The lecture concludes with a detailed breakdown of the resulting subnets, including their network addresses, ranges, and CIDR notation. The visual aids, including binary conversions and range calculations, help clarify the abstract concepts of subnetting.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor introduces the problem statement: 'Consider the network having IP Address 40.30.20.10/25 Divide this network into two subnets.' He draws a circle to visualize the network and writes the IP address 40.30.20.10 /25 on the board. He begins converting the IP address octets into binary, writing 00101000 for 40, 00011110 for 30, and 00010100 for 20. He explains that the /25 indicates the first 25 bits are the network ID. He underlines the network portion and the host portion to clarify the boundary.

  2. 2:00 – 5:00 02:00-05:00

    The instructor focuses on the fourth octet, converting 10 to binary 00001010. He explains that to divide the network into two subnets, one bit must be borrowed from the host portion, changing the prefix from /25 to /26. He writes 00 and 10 (representing the subnet bits) to illustrate the split. He calculates the new network addresses: 40.30.20.0/26 and 40.30.20.128/26. He details the total number of IP addresses (2^6 = 64) and the usable hosts (64 - 2 = 62). He lists the range of IP addresses for each subnet, specifically mentioning the first and last addresses. He writes down the CIDR representation for both resulting subnets.

  3. 5:00 – 5:11 05:00-05:11

    The final slide displays the complete solution. It shows two columns labeled '1st Subnet' and '2nd Subnet'. The 1st Subnet is 40.30.20.0/26 with a range of 40.30.20.0 to 40.30.20.63. The 2nd Subnet is 40.30.20.128/26 with a range of 40.30.20.128 to 40.30.20.191. The slide also lists the total number of IP addresses, first/last addresses, and CIDR representation for both subnets. It visually connects the binary values to the decimal ranges.

The lesson effectively demonstrates the practical application of CIDR subnetting. By starting with a specific IP and prefix, the instructor guides the viewer through the binary conversion and bit-borrowing process required to create subnets. The final summary slide reinforces the key calculations, such as determining the number of hosts and the specific IP ranges, providing a clear reference for solving similar subnetting problems. The step-by-step approach ensures that students can follow the logic from the initial problem statement to the final calculated subnets.

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