Advantage and Disadvantage of Virtual Machines
Duration: 4 min
This video lesson is available to enrolled students.
Inside: a video lesson and guided study material.
Module outline
- Quantitative Aptitude: Number System, Percentage, Profit and Loss, Ratio and Proportion (Ratios), Average, Time and Work, Speed Time and Distance, Simple Interest and Compound Interest, Mixture and Alligation, Data Interpretation, Permutation and Combination, Probability, Logarithm, Powers and Exponents (Surds and Indices), Age Problems, Divisibility Rules, Partnership, HCF LCM, Algebra, Pipe and Cistern
- Logical Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Analogy, Coding Decoding, Blood Relations, Directions (Direction Test), Syllogisms, Logical Sequence Of Words, Data Sufficiency, Seating Arrangements, Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Arrangement
- English Language: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Vocabulary, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Active Passive Voice (Voice), Direct and Indirect Speech, Cloze Test (Cloze Passage), Tenses, Subject Verb Agreement (Verb Noun Agreement), Preposition, Articles, Conjunction, Adverb
- Written English Test: English Writing Ability
- Coding: Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir
- Communication Round: Communication Assessment
- DBMS (Technical Interview): 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, Big Data Systems, NoSQL, Data Warehousing & Mining
- SQL (Technical Interview): SQL
- Operating Systems (Technical Interview): 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
- Computer Networks (Technical Interview): 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
- OOPs (Technical Interview): Object Oriented Programming (OOPS)
- HR Interview: MR & HR Interview Preparation
AI summary & chapters
AI Summary
An AI-generated summary of this video lecture.
The video presents a lecture on the advantages and disadvantages of virtual machines (VMs). The instructor begins by outlining the benefits of VMs, including the ability to run multiple operating systems on a single physical computer, which saves space, time, and management costs. VMs are also shown to support legacy applications, reducing migration costs, and provide integrated disaster recovery and application provisioning. The lecture then transitions to the disadvantages, highlighting that running multiple VMs on one physical machine can lead to unstable performance if infrastructure requirements are not met. It is also noted that VMs are less efficient and run slower than a full physical computer. The instructor uses a digital whiteboard to draw diagrams and write key terms like 'Cloud', 'PaaS', 'SaaS', and 'IaaS' to illustrate the concepts.
Chapters
0:00 – 2:00 00:00-02:00
The video starts with a slide titled 'Advantages of Virtual Machine' which lists three key benefits. The first advantage is that VMs can run multiple operating system environments on a single physical computer, saving physical space, time, and management costs. The second is that VMs support legacy applications, reducing the cost of migrating to a new operating system. The third is that VMs can provide integrated disaster recovery and application provisioning options. The instructor highlights these points with a yellow marker and begins to draw a diagram on the right side of the screen, writing 'Cloud' and 'Cloud Service Provider' to illustrate the concept of cloud computing.
2:00 – 4:19 02:00-04:19
The instructor continues to build on the diagram, adding 'PaaS' (Platform as a Service) and 'SaaS' (Software as a Service) to the cloud model. The slide then transitions to the 'Disadvantages of Virtual Machine' section. The first disadvantage listed is that running multiple virtual machines on one physical machine can result in unstable performance if infrastructure requirements are not met. The second disadvantage is that virtual machines are less efficient and run slower than a full physical computer. The instructor draws a simple diagram of a physical computer and a virtual machine to visually represent this performance difference.
The lecture provides a balanced overview of virtual machines by first detailing their significant advantages, such as cost and space savings, support for legacy systems, and robust disaster recovery. It then logically transitions to the disadvantages, emphasizing performance limitations and inefficiency. The use of a digital whiteboard to draw diagrams of cloud services (PaaS, SaaS) and the comparison between physical and virtual machines effectively illustrates the core concepts, making the information accessible and reinforcing the key points of the lesson.