Practice Question

Duration: 2 min

This video lesson is available to enrolled students.

Return to /learn/COAL-INDIA-MANAGEMENT-TRAINEE/computer-organization-architecture/pipelining/pipelining-basics/asset-practice-question-2810 after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Paper-2 | Programming & Data Structures: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  3. Paper-2 | Databases / DBMS & SQL: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Relational Calculus, Transaction Management, Concurrency Control
  4. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  5. Paper-2 | Computer Networks & Security: 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 Access Technologies, Network Security
  6. Paper-2 | Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep
  7. Paper-2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management
  8. Paper-2 | Theory of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines
  9. Paper-2 | Computer Organization & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Programming the Basic Computer
  10. Paper-2 | 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. Paper-1 | General Awareness: Polity, Physics, Biology, Chemistry, Static General Knowledge, GK- Current Affairs, History, Geography, Indian Economy, Environment
  12. Paper-1 | Logical Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Data Interpretation, Blood Relations, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Clock, Calendar, Cubes & Dices, Directions (Direction Test), Analogy, Seating Arrangements, Analytical Reasoning (Counting Figures Reasoning)
  13. Paper-1 | Quantitative Aptitude: Ratio and Proportion (Ratios), Mixture and Alligation, Permutation and Combination, Number System, HCF LCM, Speed Time and Distance, Average, Age Problems, Percentage, Profit and Loss, Time and Work, Pipe and Cistern, Simple Interest and Compound Interest, Powers and Exponents (Surds and Indices), Mensuration and Geometry, Probability, Statistics, Arithmetic, Algebra
  14. Paper-1 | English: Vocabulary, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Construction, Cloze Test (Cloze Passage)
  15. Coal India Previous Year Paper:
  16. Engineering Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic, Linear Algebra, Calculus
  17. Coal India Mock Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video presents a multiple-choice question comparing the execution time of a single instruction on pipelined versus non-pipelined processors. The instructor analyzes a specific pipeline diagram with five stages (S1 to S5) and associated timing values. He explains that while pipelining increases throughput, the latency for a single instruction (T1) is generally greater than or equal to the time taken on a non-pipelined processor (T2) due to the overhead of latches and pipeline registers. T1 includes stage delays plus overhead, whereas T2 is just stage delays. The instructor guides the viewer to select the correct inequality relationship between T1 and T2. This comparison highlights the fundamental difference in how these processors handle instruction execution.

Chapters

  1. 0:00 – 1:55 00:00-01:55

    The instructor introduces a problem statement displayed on the slide: 'Consider the time T1 is taken for a single instruction on a pipelined processor and time T2 is taken for a single instruction on a non-pipeline processor?' He points to the options: a) T1 = T2, b) T1 <= T2, c) T1 >= T2, and d) NONE. He then focuses on a hand-drawn diagram illustrating a 5-stage pipeline. The diagram shows stages S1 through S5 with specific execution times: 10ns, 12ns, 13ns, 11ns, and 14ns. Between each stage, there are vertical bars representing pipeline registers or latches, each contributing a 1ns delay. The instructor circles these latch times to emphasize their contribution to the total latency. He explains T1 sums stage times plus latch overhead, while T2 sums only stage times. Since T1 includes the additional latch overheads, T1 will be greater than T2. He marks option (c) T1 >= T2 as the correct answer, noting that T1 > T2 due to the overhead, making the 'greater than or equal to' relationship valid. The visual representation clearly shows the sequential nature of the pipeline stages.

The lesson demonstrates the trade-off between throughput and latency. Pipelining increases throughput but introduces overheads in the form of pipeline registers. For a single instruction, this overhead means the latency (T1) is strictly higher than the latency on a non-pipelined processor (T2). The instructor uses a concrete numerical example with stage times of 10ns to 14ns and 1ns latch overheads to prove that T1 > T2. This reinforces the theoretical concept that pipelining is beneficial for a stream of instructions but not for a single isolated instruction. Understanding this distinction is crucial for computer architecture design.

Loading lesson…