Practice Questions

Duration: 2 min

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Inside: a video lesson and guided study material.

Module outline

  1. HPSC Interview Preparation: Interview Preparation
  2. Python Language: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis, DSA using Python
  3. Data Structure & Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Sorting Algorithms, Minimum Spanning Trees, Time Complexity Analysis, Graph Theory, Shortest Path Algos
  4. Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security
  5. Computer System & Organisation: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Programming the Basic Computer
  6. Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, SQL, File Organization & Indexing, Transaction Management, Concurrency Control
  7. Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling
  8. Digital Logic & Circuits: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation
  9. Theory Of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Pushdown Automata & CFG, Turing Machines, Moore & Mealy Machines
  10. Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  11. Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, Data Warehousing & Mining
  12. Introduction to Emerging Trends: Emerging Tech Trends, समुच्चय, संबंध, फलन और विविक्त गणित / Sets, Relations, Functions and Discrete Mathematics, व्यापार, विपणन एवं उपभोक्ता संरक्षण / Trade, Marketing and Consumer Protection, कंप्यूटर नेटवर्क / Computer Networks
  13. Digital Society & Cyber Law: Society, Law & Ethics, साइबर सुरक्षा / Cyber Safety and Security
  14. HPSC PGT Previous Year Paper:
  15. HPSC Assistant Professor Previous Year Paper:
  16. Live Sessions: HPSC Live Sessions, EMRS TGT/PGT Live Class
  17. Full Mock Test:
  18. HPSC PGT - MOCK Test Series:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video presents a computer architecture problem involving disk storage capacity and addressing. The instructor analyzes a disk configuration with 512 tracks, 128 sectors per track, and 256 bytes per sector. He calculates the total capacity in bytes and converts it to megabytes. Additionally, he determines the number of bits required to uniquely address each component of the disk structure. The lecture emphasizes converting decimal numbers to powers of 2 to simplify multiplication and addition of exponents.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor reads the problem statement displayed on screen: "Consider a disk where there are 512 tracks, each track is capable of holding 128 sector and each sector holds 256 bytes..." He begins by visualizing the disk structure, drawing concentric red circles on the whiteboard to represent the tracks. He then breaks down the numbers into powers of 2 to facilitate calculation: 512 becomes 2^9, 128 becomes 2^7, and 256 becomes 2^8. He sets up the multiplication for total capacity: 2^9 x 2^7 x 2^8. He sums the exponents to find the total power of 2, resulting in 2^24 bytes. Finally, he converts this value to 16 MB, writing "16 MB" on the board next to the equation. He explicitly writes the exponents 9, 7, and 8 above the respective terms in the multiplication.

  2. 2:00 – 2:27 02:00-02:27

    The instructor shifts focus to the second part of the question: finding the number of bits required to reach the correct track, sector, and disk. He points to the exponents he previously calculated: 9, 7, and 8. He writes the summation 9 + 7 + 8 below the main equation. He explains that 9 bits are needed to address the 512 tracks, 7 bits for the 128 sectors, and 8 bits for the 256 bytes. He circles the total sum, which is 24, indicating the total addressing bits required. He reinforces the final capacity calculation of 16 MB while discussing these addressing bits. He underlines "16 MB" to emphasize the final capacity result.

The lesson effectively demonstrates how to calculate storage capacity by multiplying the number of tracks, sectors, and bytes per sector. It also highlights the relationship between the number of items in a hierarchy and the binary bits required to address them, showing that the total addressing bits equal the sum of the logarithms of each component count. The visual progression from drawing the disk to writing the mathematical formula reinforces the connection between physical structure and logical addressing.

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