Internal Fragmentation

Duration: 3 min

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Inside: a video lesson and guided study material.

Module outline

  1. English Comprehension/Verbal Ability: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Vocabulary, Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Subject Verb Agreement (Verb Noun Agreement), Tenses, Verb, Articles, Preposition, Conjunction, Pronoun, Noun, Adjectives, Adverb, Modals, Cloze Test (Cloze Passage), Active Passive Voice (Voice), Direct and Indirect Speech, Sentence Construction
  2. Logical Ability: Coding Decoding, Directions (Direction Test), Analogy, Inequality, Data Sufficiency, Series (Number and Letter Series) (Numerical Relations and Reasoning), Syllogisms, Seating Arrangements, Puzzle Solving (Puzzles), Blood Relations, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Ranking, Order and Sequence, Logical Sequence Of Words, Data Arrangement, Venn Diagram, Calendar, Clock
  3. Quantitative Ability: Logarithm, Permutation and Combination, Probability, Profit and Loss, Speed Time and Distance, Mixture and Alligation, Partnership, Simple Interest and Compound Interest, Percentage, Ratio and Proportion (Ratios), Average, Time and Work, Pipe and Cistern, Number System, Divisibility Rules, HCF LCM, Algebra, Powers and Exponents (Surds and Indices), Mensuration and Geometry, Age Problems, Data Interpretation, Sequence and Series (Series)
  4. Basic Analytical Ability: Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Analytical Reasoning (Counting Figures Reasoning), Cubes & Dices, Selection Decision Table (Decision Making)
  5. Computer Programming: Pseudo Codes, Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir
  6. DBMS (Computer Science): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Transaction Management, Concurrency Control, Database Security & Authorization
  7. SQL (Computer Science): SQL
  8. OS (Computer Science): Introduction to OS, Process Management, CPU Scheduling, Deadlock, Process Synchronization, Threads & Process Creation, Memory Management, Virtual Memory, File Management
  9. Computer Networks (Computer Science): 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
  10. Data Structures (Computer Science): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  11. OOPs (Computer Science): Object Oriented Programming (OOPS)
  12. Software Engineering (Computer Science): Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  13. SVAR Conversational - Spoken English: Communication Assessment
  14. HR Interview: MR & HR Interview Preparation
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a detailed explanation of internal fragmentation within the context of operating system memory management. The instructor begins by presenting a formal definition on the screen, stating that internal fragmentation occurs when a fixed-size partition is allocated to a process. He clarifies that if the partition size is equal to or larger than the process request, any remaining unused space inside that specific partition is termed internal fragmentation. To make this concept concrete, he employs a real-world analogy involving dining tables and then moves to a technical demonstration on a digital whiteboard.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The lecture commences with the instructor standing beside a slide displaying the definition of internal fragmentation. The text explicitly states that this phenomenon is a function of fixed-size partitions. The instructor elaborates that when a partition is allocated to a process, if the partition is either the same size or larger than the request, the unused space by the process in the partition is called internal fragmentation. He then transitions to a visual analogy, showing a photograph of a long dining table set for a formal event. He points out that if a small group of people sits at this large table, the empty space around them represents wasted capacity. He further displays a diagram comparing circular tables with capacities of 2, 4, 8, and 10 seats against rectangular tables.

  2. 2:00 – 3:23 02:00-03:23

    The instructor moves to a whiteboard to illustrate the concept mathematically and visually. He draws a long horizontal rectangle representing a block of memory and divides it into several sections. He labels these sections with numbers such as 2, 3, 4, 5, and 8, likely representing partition sizes. He then draws a smaller rectangle below to represent a process. He explains a scenario where a process is allocated a partition that is larger than its actual size. He circles the unused portion of the partition to highlight the fragmentation. In a subsequent example, he draws a partition labeled 20 and a process labeled 10, demonstrating that the difference represents the internal fragmentation.

The video successfully transitions from a textual definition to a relatable analogy and finally to a technical diagram. The instructor uses the dining table analogy to help students visualize the concept of wasted space in fixed partitions. The whiteboard demonstration reinforces this by showing specific numerical examples, making the abstract concept of memory management tangible. The progression ensures that students understand not just the definition, but also the practical implications of internal fragmentation.

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