Practice Questions-3

Duration: 3 min

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Inside: a video lesson and guided study material.

Module outline

  1. Quantitative Aptitude: Number System, Divisibility Rules, HCF LCM, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Mixture and Alligation, Partnership, Age Problems, Time and Work, Pipe and Cistern, Speed Time and Distance, Algebra, Arithmetic, Data Interpretation, Sequence and Series (Series), Logarithm, Powers and Exponents (Surds and Indices), Permutation and Combination, Probability, Speed Mathematics and Basic Mathematics, Trigonometry
  2. Logical Reasoning: Coding Decoding, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Seating Arrangements, Puzzle Solving (Puzzles), Data Arrangement, Syllogisms, Inequality, Data Sufficiency, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Series (Number and Letter Series) (Numerical Relations and Reasoning), Venn Diagram, Logical Sequence Of Words, Calendar, Clock, Cubes & Dices, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning)
  3. Verbal Ability: Noun, Pronoun, Adjectives, Verb, Adverb, Tenses, Subject Verb Agreement (Verb Noun Agreement), Articles, Preposition, Conjunction, Modals, Determiner, Vocabulary, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Active Passive Voice (Voice), Direct and Indirect Speech, Sentence Construction
  4. Data Structures (Domain Test): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  5. Algorithms (Domain Test): Algorithm Analysis, Sorting Algorithms, Time Complexity Analysis, Greedy Algorithms
  6. OOPs (Domain Test): Object Oriented Programming (OOPS)
  7. DBMS (Domain Test): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  8. SQL (Domain Test): SQL
  9. Operating Systems (Domain Test): Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  10. Computer Networks (Domain Test): 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, Mobile Technology, Cloud Computing and IoT, Cyber and Info Security
  11. Coding: Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir
  12. Written English Test: English Writing Ability
  13. Psychometric Test: Behavioral Assessment (Behavioral Competency Profiling) (Psychometric Test)
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture segment focuses on solving practice problems involving logical reasoning sequencing and database normalization. The instructor begins by analyzing a logic puzzle with variables V, W, X, Y, and Z. He identifies restrictive conditional rules such as 'Z -> Y' and marks it as a 'TD' (Tightest Door), noting that Z cannot be placed at the end of the sequence. He further examines 'X -> YV', circling it to emphasize that X must be immediately followed by both Y and V. The session then transitions to database normalization, specifically examining functional dependencies in relations like R(VWXYZ) and R(ABCDE). The instructor evaluates candidate keys, identifies partial dependencies (PD), and determines normal forms including 1NF and 2NF. In the final segment, he analyzes a relation R(ABCDEF), marking violations of 3NF by circling the term '3NF' and crossing out non-prime attributes. He lists dependencies such as AB -> C, C -> D, and transitive chains like E > F and F > A to demonstrate how to identify violations of the third normal form.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor introduces a logical reasoning problem involving variables V, W, X, Y, and Z. He analyzes the conditional rule 'Z -> Y', marking it as a 'TD' (Tightest Door) to indicate a restrictive condition where Z cannot be at the end. He then circles 'X -> YV' to emphasize that X must be followed by both Y and V. The segment transitions to database normalization, analyzing relation R(VWXYZ) with dependencies like Z -> Y and X -> YV. The instructor identifies candidate keys and discusses normal forms 1NF and 2NF, then switches to relation R(ABCDE) with dependencies A -> B, B -> E, and C -> D. He marks partial dependency (PD) for A -> B to illustrate violations of 2NF.

  2. 2:00 – 2:37 02:00-02:37

    The instructor continues with a database normalization problem for relation R(ABCDEF). He circles '3NF' on the screen to highlight the specific normalization form being evaluated. The visible text lists dependencies including AB -> C, C -> D, and transitive chains E > F and F > A. He crosses out attributes in the relation schema to demonstrate how non-prime attributes are handled during normalization checks. The instructor identifies transitive dependencies that violate 3NF, emphasizing the process of eliminating redundant attributes to achieve higher normal forms.

The lecture effectively bridges logical sequencing and database theory. Key concepts include the 'Tightest Door' heuristic for logic puzzles, where identifying restrictive rules like Z -> Y helps constrain the solution space. In database normalization, the instructor demonstrates practical application of functional dependencies to determine candidate keys and normal forms. The visual cues, such as circling '3NF' or marking partial dependencies (PD), serve as critical revision markers. The progression from identifying basic constraints to evaluating complex transitive dependencies provides a structured approach for students preparing for exams on relational database design and logical reasoning.

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