Types of Network OS

Duration: 1 min

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Module outline

  1. Communication Round: Vocabulary, Subject Verb Agreement (Verb Noun Agreement), Tenses, 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), Direct and Indirect Speech, Active Passive Voice (Voice), Verbal Analogy (Word Based Analogy), Articles, Preposition, Conjunction, Sentence Construction, English Writing Ability, Communication Assessment
  2. Quantitative Aptitude: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Speed Time and Distance, Percentage, Average, Powers and Exponents (Surds and Indices), Time and Work, Mensuration and Geometry, Age Problems, Pipe and Cistern, Probability, Profit and Loss, Simple Interest and Compound Interest, Algebra
  3. Analytical and Logical Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Directions (Direction Test), Ranking, Order and Sequence, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Logical Sequence Of Words, Puzzle Solving (Puzzles), Syllogisms, Seating Arrangements, Calendar, Clock, Blood Relations, Cubes & Dices, Venn Diagram, Analytical Reasoning (Counting Figures Reasoning)
  4. Cognizant Gaming Aptitude: Gamified / Game Based Aptitude
  5. Java (Cluster 1): Java
  6. ANSI SQL MySQL (Cluster 1,2,3): SQL
  7. HTML, CSS, JavaScript (Cluster 1,3): HTML, CSS, JavaScript
  8. Python (Cluster 2): Python for Placements by Yash Sir
  9. Cloud Fundamentals (Cluster 2): Emerging Tech Trends
  10. C# (Cluster 3): C#
  11. OOPs: Object Oriented Programming (OOPS)
  12. Technical Assessment (Coding): Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Pseudo Codes
  13. Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. DBMS: 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
  15. Operating Systems: 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
  16. Computer Networks: 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
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video presents a lecture on network operating systems, focusing on two primary models: peer-to-peer (P2P) and client-server. The instructor begins by defining P2P networks, where all devices (peers) are equal and share resources from a common location, making them suitable for small and medium LANs and less expensive to set up. A diagram illustrates this model with multiple peers (Peer 1, Peer 2, etc.) connected in a decentralized manner, sharing objects. The lecture then transitions to the client-server model, which is more expensive and requires technical maintenance. In this architecture, a central server provides resources to clients (such as phones, PCs, and laptops), and the network is centrally controlled, making changes and additions easier. A diagram shows a server (Server-PT) connected via a network cloud to various client devices. The video also briefly touches on concepts like data migration and computation migration, and concludes with a list of services provided by distributed operating systems, including directory, backup, web, and internetworking services.

Chapters

  1. 0:00 – 1:26 00:00-01:26

    The video starts with a slide titled 'Types of network operating systems'. The instructor explains the first type, peer-to-peer (P2P), defining it as a network where users share resources saved in a common, accessible location, and all devices are treated equally. The text states P2P is best for small and medium LANs and is less expensive than the client-server model. A diagram shows multiple peers (Peer 1, Peer 2, Peer 3, Peer 4, Peer N) connected in a decentralized network, with arrows indicating shared objects. The instructor then transitions to the second type, client-server, explaining that it provides access to resources through a central server. The text notes this model is more expensive and requires technical maintenance. A diagram illustrates a central server (Server-PT) connected to a network cloud, which in turn connects to various client devices (Phone-PT, PC-PT, Laptop-PT). The instructor highlights that a key advantage of the client-server model is central control, which simplifies changes and additions. The final slide lists services provided by distributed operating systems, including directory, backup, web, and internetworking services.

The lecture systematically compares the two fundamental network operating system models. It begins with the peer-to-peer (P2P) model, emphasizing its decentralized nature, equality of devices, and cost-effectiveness for smaller networks, supported by a diagram of interconnected peers. It then contrasts this with the client-server model, highlighting its centralized architecture, higher cost, and the advantage of centralized control for easier management, illustrated by a diagram of a server serving multiple clients. The progression from P2P to client-server provides a clear comparison of their structures, advantages, and typical use cases.

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