Practice Question

Duration: 4 min

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Module outline

  1. About Course: About the Course
  2. Paper 1 | General Studies: State Wise GK / राज्यवार सामान्य ज्ञान (GK)
  3. Paper 1 | Information and Communication Technology: Role of Internet and Web Services, Security in Mobile and Wireless Computing
  4. Paper 1 | Current Affairs: GK- Current Affairs / GK- समसामयिकी
  5. Paper 2 | Discrete Mathematical Structure: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic
  6. Paper 2 | Digital Computer Organization And Architecture: Number System, Number Representation, Sequential Circuits, Combinational Circuit, 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. Paper 2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  8. Paper 2 | Programming Languages & Object-Oriented Programming Concepts: Java, OOPS with C++, Java Fundamentals, Array, String, IO & References
  9. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  10. Paper 2 | Data Structure And Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Minimum Spanning Trees, Advanced Algorithms
  11. Paper 2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS
  12. 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, Complexity Theory
  13. 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
  14. Paper 2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Transaction Management, Concurrency Control, Database Recovery, Database Security & Authorization, Enhanced Data Models
  15. Paper 2 | Computer Network And Information Security: Introduction to CN, Data Communication, Application Layer, Hardware basics, Cyber Threats and Malware Attacks, Network Security, 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
  16. Paper 2 | Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  17. Paper 2 | Current Trends & Technologies: Approaches to AI, Search Algorithms, Game Playing, Knowledge Representation, Planning, Multi Agent Systems, Fuzzy Sets, Natural Language Processing, Artificial Neural Networks, Genetic Algorithms, Data Warehousing & Mining, Electronic Data Interchange and E-Commerce
  18. Paper 2 | Full Length Mock Tests:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video segment focuses on solving graph theory problems involving simple non-isomorphic regular graphs. The instructor begins by presenting a problem requiring the identification of all possible configurations for 6 vertices and 6 edges where every vertex maintains an identical degree. The core constraint is that the graph must be regular, meaning each vertex connects to the same number of edges. The instructor systematically explores solutions by visualizing cycle graphs and disjoint unions, ensuring the total vertex count and edge count match the problem statement while maintaining regularity.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with the instructor displaying a practice question on screen asking for the number of simple non-isomorphic graphs possible with 6 vertices and 6 edges where every vertex has the same degree. Key constraints highlighted include 'simple', 'non-isomorphic', and the requirement for a regular graph structure. The instructor begins visualizing solutions by drawing a hexagonal cycle graph labeled C6, which satisfies the condition of 6 vertices and 6 edges with a degree of 2 for each vertex. Subsequently, the instructor draws two separate triangles (K3 + K3) to illustrate a second valid configuration where vertices also maintain a uniform degree of 2. These drawings are labeled G1 and G2 on the whiteboard to distinguish between the connected cycle graph and the disconnected union of cycles.

  2. 2:00 – 4:14 02:00-04:14

    The problem statement shifts to a new scenario involving 8 vertices and 8 edges with the same regularity constraint. The instructor draws a large octagon representing a single cycle graph C8, which serves as the first solution. Next, two disjoint squares are drawn and labeled C4 - C4 to demonstrate a configuration where the total vertex count is 8 and edges are distributed equally. The instructor then explores further combinations by drawing a house-shaped graph (a pentagon C5) alongside a separate triangle (C3), indicating that the sum of vertices and edges must equal 8. The final visual evidence shows three distinct configurations drawn in red ink: a single 8-cycle (C8), two disjoint 4-cycles (2C4), and a combination of a 5-cycle and a 3-cycle (C5 + C3). These drawings represent the complete set of non-isomorphic regular graphs satisfying the 8-vertex, 8-edge constraint.

The lecture demonstrates a methodical approach to enumerating regular graphs by decomposing the total number of vertices and edges into disjoint cycles. For a graph with n vertices and n edges where every vertex has degree 2, the solution space consists of all partitions of n into cycle lengths. The instructor uses visual aids to show that a single connected component (C6 or C8) is one solution, while disconnected components formed by combining smaller cycles (like two triangles for n=6 or a pentagon and triangle for n=8) are other valid solutions. This technique highlights the importance of checking both connectivity and degree constraints when determining non-isomorphic graph counts.

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