A virtual machine can exist as a standalone machine or it can exist within a vApp.
A virtual machine is a software computer that, like a physical computer, runs an operating system and applications. The virtual machine consists of a set of specification and configuration files and is backed by the physical resources of a host. Every virtual machine has virtual devices that provide the same functionality as physical hardware are more portable, more secure, and easier to manage. Virtual machines can be standalone, or they can exist within a vApp. A vApp is compound object composed of one or more virtual machines as well as one or more networks.
The following figure shows the different options when creating a virtual machine. You can create a standalone virtual machine. In this case, the virtual machine is directly connected the organization VDC. Or, you can create a virtual machine within a vApp. Ceating a virtual machine inside of a vApp allows you to group together multiple virtual machines and their associated networks. vApps allow you to build complex applications, and save them for future use in a catalog.Virtual Machines are Standalone or within a vApp
What do you mean by operating system? Definition : An operating system is a program that act as an interface between the user of a computer and the Computer hardware. Operating system is a first program that gets loaded into the memory through a process called booting. Concepts of operating system : · The purpose of operating system is to provide an environment in which a user can execute program in a convenient and efficient manner. · Operating system is an integrated set of program that ma...
Shortest Job First Scheduling (SJF) · SJF ia also known as shortest-job-next(SJN) algorithm and is faster than FCFS. · In SJF, the process with the least estimated execution time is selected from the ready queue for execution. · For this, SJF algorithm associates with each process, the length of its next CPU burst. When the CPU is available, it is assigned to the process that has the smallest next CPU burst. · If tow processes have the same length of next CPU burst ,FCFS scheduling algorithm is used to break the tie. · SJF algorithm can be preemptive or non-preemptive. Non-preeptive SJF · In non-preemptive SJF, scheduling, CPU is always assigned to the ...
Monolithic Architecture Monolith means composed all in one piece. The Monolithic application describes a single-tiered software application in which different components combined into a single program from a single platform. Components can be: Authorization — responsible for authorizing a user Presentation — responsible for handling HTTP requests and responding with either HTML or JSON/XML (for web services APIs). Business logic — the application’s business logic. Database layer — data access objects responsible for accessing the database. Application integration — integration with other services (e.g. via messaging or REST API). Or integration with any other Data sources. Notification module — responsible for sending email notifications whenever needed. Example for Monolithic Approach Consider an example of Ecommerce application, that authorizes customer, takes an order, check products inventory, authorize payment and ships ordered products. This applicat...
Change the priority of a process You can tell the computer that certain processes should have a higher priority than others, and so should be given a bigger share of the available computing time. This can make them run faster, but only in certain cases. You can also give a process a lower priority if you think it is taking up too much processing power. Go to the Processes tab and click on the process you want to have a different priority. Right-click the process, and use the Change Priority menu to assign the process a higher or lower priority. There is typically little need to change process priorities manually. The computer will usually do a good job of managing them itself. (The system for managing the priority of processes is called nice .) Does higher priority make a process run faster? The computer shares its processing time between all of the running processes. This is normally shared intelligently, so programs that are doing more ...
Message Delivery Protocol · A protocol is a set of rules and conventions shared by communicating entities . · Message passing can be blocking or non blocking . · In blocking protocol , a sender process is blocked till the message selivered to the . in this case , sender process has guarantee that the message sent by it ie delivered before it continues its execution . A blocking protocol normally includes: 1. Blocking send : the sender process is blocked until the message is received by the receiving process or by the mailbox. 2. Blocking receive : the receiver nlocks until a message is available thus when both sender as well as receiver is blocked ,it is known as rebdevezevous . this combination allows for tight sysnchronization between process. ·...
Comments
Post a Comment