Practice Question

Duration: 2 min

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Inside: a video lesson and guided study material.

Module outline

  1. Section A | English: Vocabulary, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Preposition, Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Articles, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Verbal Analogy (Word Based Analogy)
  2. Section A | Quant Aptitude: Ratio and Proportion (Ratios), Mixture and Alligation, Permutation and Combination, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Arithmetic, Algebra, Powers and Exponents (Surds and Indices), Average, Age Problems, Percentage, Profit and Loss, Partnership, Time and Work, Simple Interest and Compound Interest, Mensuration and Geometry, Probability, Pipe and Cistern
  3. Section A | Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Calendar, Clock, Blood Relations, Directions (Direction Test), Seating Arrangements, Ranking, Order and Sequence, Puzzle Solving (Puzzles)
  4. Section B | C Programming: C Programming by Yash Sir, Coding Questions by Yash Sir
  5. Section B | Data Structures: Algorithm Analysis, Greedy Algorithms, Time Complexity Analysis, Sorting Algorithms, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs
  6. Section B | OOP (C++): Object Oriented Programming (OOPS), Programming in C++
  7. Section B | OS: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS
  8. Section B | Networking: 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
  9. Section B | AI & Big Data Basics: AI & ML by Arun Sir, Big Data Systems
  10. Section C | Digital Electronics: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Analog-Digital Conversion
  11. Section A, C | Comp. Fundamentals, COA: Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Multiprocessors, Programming the Basic Computer
  12. MOCK TEST:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video features an educational lecture by Sanchit Jain Sir on computer architecture, specifically focusing on cache memory mapping. The problem presented involves a fully associative mapped cache with a size of 16 KB, a block size of 256 bytes, and a main memory size of 128 KB. The goal is to determine the number of bits in the tag and the tag directory size. The instructor systematically breaks down the address structure, calculating the block offset based on the block size and the total address bits based on the main memory size. He then deduces the tag bits and calculates the total directory size by multiplying the number of cache lines by the tag bits.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor begins by reading the problem statement displayed on the screen: 'Consider a fully associative mapped cache of size 16 KB with block size 256 bytes. The size of main memory is 128 KB.' He proceeds to analyze the address structure shown in the diagram. He calculates the block offset bits as 8, noting that 256 bytes equals 2^8. He determines the total physical address bits to be 17, as 128 KB equals 2^17. This leads him to conclude that the Tag bits are 9 (17 - 8). He also calculates the number of cache lines as 64 (16 KB / 256 B), writing '6' under the 'Cache Line' section to indicate the log2 of the number of lines. He sets up the multiplication for the directory size: 2^6 * 9.

  2. 2:00 – 2:07 02:00-02:07

    The instructor completes the calculation for the tag directory size. He writes the number '576' at the top right of the diagram, which is the result of 64 * 9. He emphasizes that the tag bits are 9. The visual focus remains on the diagram which clearly labels the 'Block Number' as 9 bits and 'Block Offset' as 8 bits. He confirms the final answer for the tag directory size calculation.

The lecture provides a comprehensive walkthrough of cache memory calculations. It highlights the importance of understanding address decomposition into tag, index, and offset fields. For fully associative mapping, the index is zero, and the entire block number serves as the tag. The instructor demonstrates how to derive the tag directory size by considering the number of lines and the tag length. This example serves as a practical application of theoretical concepts in computer organization.

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