Basics Of ICMP

Duration: 4 min

This video lesson is available to enrolled students.

Return to /learn/ISRO/computer-networks/net-layer-ipv4-proto/net-layer-protocols/asset-basics-of-icmp after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. General Aptitude & Reasoning: Number System, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Speed Time and Distance, Mixture and Alligation, Data Interpretation, Algebra, Probability, Permutation and Combination, Venn Diagram, HCF LCM, Divisibility Rules, Age Problems, Pipe and Cistern, Partnership, Linear Algebra, Sequence and Series (Series), Statistics, Powers and Exponents (Surds and Indices), Arithmetic, Mensuration and Geometry, Calculus, Trigonometry, Vectors, Speed Mathematics and Basic Mathematics, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Analogy, Series (Number and Letter Series) (Numerical Relations and Reasoning), Puzzle Solving (Puzzles), Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Calendar, Seating Arrangements, Coding Decoding, Blood Relations, Directions (Direction Test), Clock, Analytical Reasoning (Counting Figures Reasoning), Ranking, Order and Sequence, Logical Sequence Of Words, Inequality, Data Sufficiency, Cubes & Dices
  3. Computer Networks & Cybersecurity: 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
  4. Programming, Data Structures & Algorithms: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, OOPS with C++, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  5. AI, Machine Learning, Big Data & Cloud: Emerging Tech Trends, Artificial Intelligence, Big Data Systems, Approaches to AI, Search Algorithms, Knowledge Representation, Cloud Computing
  6. Digital Logic & Computer Organization: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer
  7. TOC & Compiler: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory, 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
  8. Discrete Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic
  9. Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS, Linux OS, Distributed Systems
  10. Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, Object Oriented Technology, HTML Basics, JavaScript-Basics, Java, XML
  11. Database Management System: 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, Database Recovery, Data Warehousing & Mining, Enhanced Data Models, NoSQL
  12. Other Recurring CS Topics: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, Multimedia
  13. Live Classes: ISRO Live classes
  14. Full Mock Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture introduces the Internet Control Message Protocol (ICMP) as a companion to IP, focusing on its role in addressing two core deficiencies of the IP protocol: the lack of error control and the absence of assistance mechanisms. The instructor uses rhetorical questions to highlight scenarios where IP fails, such as a router discarding a datagram due to an unreachable destination or a zero time-to-live field. The lesson then transitions to classifying ICMP messages into two broad categories: Error-Reporting and Query (Request & Reply) messages, explaining that query messages occur in pairs to help hosts or network managers retrieve specific information from routers.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor introduces ICMP by identifying two main deficiencies of the IP protocol: a lack of error control and a lack of assistance mechanisms. The slide poses rhetorical questions about what happens when errors occur, specifically noting that IP has no error-reporting or error-correcting mechanism. Scenarios include a router discarding a datagram because it cannot find a route to the final destination, or when the time-to-live field has a zero value. The instructor gestures toward these bullet points to emphasize the problem statement before introducing ICMP as the solution.

  2. 2:00 – 4:02 02:00-04:02

    The lecture defines the Internet Control Message Protocol (ICMP) as a companion to the IP protocol designed to compensate for its two specific deficiencies. The presentation then shifts to a hierarchical diagram classifying ICMP messages into two broad categories: Error-Reporting and Query (Request & Reply) messages. The instructor points to the diagram's branches, explaining that query messages occur in pairs and help a host or network manager get specific information from a router or another host, distinguishing their function from error-reporting messages.

The lesson follows a problem-solution structure. It begins by establishing the limitations of IP through specific failure scenarios, such as unreachable destinations and expired time-to-live values. It then introduces ICMP as the necessary companion protocol to handle these errors. The final segment provides a structural overview of ICMP by categorizing its messages into Error-Reporting and Query types, clarifying that query messages are used for information retrieval in paired request-and-reply formats. This progression moves from identifying the need for ICMP to defining its core message types.

Loading lesson…