If you are a RHEL 7.3 shop, do the same thing. 5G core adoption the open way with Red Hat OpenShift, Whats new with Quarkus? To demonstrate, run a Red Hat Universal Base Image 8 (UBI) Container Image on a RHEL 8 Container Host: This demonstrates a completely supportable image and host combination, which is also compatible, and portable. Horizontal stands for platform/dependency flexibility. CRITERIA FOR SELECTING A COMPUTER SYSTEM A good computer system is one that meets all Better than just free, these books are also openly-licensed! It is manufactured. ii) Outline four advantages of the changeover strategy identified. Reason: Hardware Compatibility Requirements are Non-functional requirements. +38 093 252 99 56 The difference between larger and smaller devices is such that detailed software operation is different; an application designed to display suitably on a large screen cannot simply be ported to a pocket-sized smartphone with a tiny screen even if the functionality is similar. True/False. Required fields are marked *. If you're truly gung-ho on interface . Red Hat cannot guarantee that every permutation of Linux Container Image and host combination on the planet will work. There are two types of compatibility: device compatibility and app compatibility . The examiner could want to establish whether you can differentiate between hardware and software portability; Another major development in this question is the word portability. Name any three hardware details that should be considered before installing any software. Users purchase systems from many vendors to implement the solutions they need. This is a compatibility problem, even though the image is portable. Answer / sampathi kotla. To demonstrate the limits, let's try and execute this Windows Nano container image on a RHEL 8 container host: The first thing youll notice is that the image fails to run. Compatibility - the container images and hosts are designed and engineered to work together (See: Engineering compatibility with the Red Hat Universal Base Image). - Adaptability - Installability - Coexistence - Replaceability - Portability Compliance Transferring installed program files to another computer of basically the same architecture. Sarah was required to select a system development method for a proposed information system for her company. Your email address will not be published. This compatibility problem extends to processor architecture, and also versions of the operating system. Software portability is a key concern when configuration settings affect software correctness and target operational environments are highly configurable. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); DockerCon 2017: Austin: The Cube Interview, Why Portability is Not the Same Thing as Compatibility. Many to-many Relationship, Most software developers are adopting object oriented analysis and design. Try running a RHEL 8 container image on a RHEL 4 container host that isnt going to work. right shifting a signed integer in C can do a logical or an arithmetic shift). Processor selection for an embedded system. How many 1.44MB diskettes would be used to store data that require storage space of 4.7 GB. It makes applications or software run more efficiently and illustrates the system's quality. Portability - you can move the image where you want. Lets dig into these three concepts a bit deeper: Since the OCI standard governs the images specification, a container image can be created with Podman, pushed to almost any container registry, shared with the world, and consumed by almost any container engine including Docker, RKT, CRI-O, containerd and, of course, other Podman instances. True/False, Browser Compatibility Requirements are functional requirements? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); //mcr.microsoft.com/windows/nanoserver:1903 containers-storage:mcr.microsoft.com/windows/nanoserver:1903, "sha256:14b9bc111f8cd94dc0c807d4c4735d973d4d0c2138c61ae416c8f032c07dee89", "sha256:e145b606dfc22d200d5cb05f3ac1d69fdd0dd13b1e2d906c7ebaf154e6a694ed", Architecting Containers Part 1: Why Understanding User Space vs. Kernel Space Matters, DevConf.cz 2020: Brno: Understanding Container Engines by Demo, Deeply Understanding the Different Between Portability, Compatibility, and Supportability. A computer program is said to be portable if there is very low effort required to make it run on different platforms. You also need Compatibility and Supportability. Click on each book cover to see the available files to download, in English and Afrikaans. Accessibility, usability, and inclusion are closely related aspects in creating a web that works for everyone. For example we got this error trying to install a music interface device driver for home recording. Portability is "the ability of software or data to be transferred from one machine or system to another" [5] . As languages evolved and vendor lock-ins reduced, it has since morphed to mean several things including binary compatibility and source-code compatibility. Try running a RHEL 8 container image on a RHEL 4 container host -- that isn't going to work very well. Please choose your preferred way, Issues in the Specification and Measurement of Software Portability. This means you can share infrastructure like registry servers between cloud providers or on premise. Programming 5. This compatibility problem extends to processor architecture, and also versions of the operating system. 3. This means you can share infrastructure like registry servers between cloud providers or on-premise. Explain three typical features of these system that make them inevitable in organization, Explain the importance of pseudocode in system design, Outline three causes of project schedule slippage, Outline three limitation of using waterfall model in system management, With the aid of diagram, describe three types of relationships used in entity relationship diagram (ERD) So, if your dev team moves to different enviroment, you don't want to waste time and resources on re-development. As new technology is introduced, there is a need for the existing software investment to be preserved. Mobile compatibility comes in two forms: a stand-alone mobile app and mobile-browser accessibility. Describe knowledge based system 4. This is usually a task for the program developers; typical users have neither access to the source code nor the required skills. Assume you are hired as system analyst, True/False. The concept of software portability has different meanings to different people. Which of the following is a functional requirement? Supportability: It helps in maintaining the testability, extendibility and correctability. Reason: Operating Systems Compatibility Requirements are functional requirements. I will be understanding something this article.s, Your email address will not be published. First, notice that Podman, DEBU[0000] mounted container "8be871d404f1a15410c63bf7b39f13a87aff4d87fbac5847c526029c802c9131" at "/home/fatherlinux/.local/share/containers/storage/overlay/1449c977519500a8939aaf49d28124c11b113b357922a33e341822e0429477af/merged", DEBU[0000] ExitCode msg: "unable to find user containeruser: no matching entries in passwd file", ERRO[0000] unable to find user ContainerUser: no matching entries in passwd file, If you would like to see another example of compatibility problems, even between very similar Linux distros, see, Supportability is about putting a reasonable scope around what is and isnt covered by a, To demonstrate supportability, lets run some tests with a container image called, podman run -it --rm ubi8 cat /etc/os-release | head -n 4, So, if you are using Red Hat Enterprise Linux today, and just getting started with containers, check out Red Hat Universal Base Image, its portable, compatible, and the most supportable base image available for RHEL and RHEL CoreOS. Standard 4: Tin Can API. This also allows you to share infrastructure like Registry Servers. ARM binaries in a container image will not run on POWER container hosts - Windows Nano binaries in a container image will not run on a RHEL 8 container host. It can be a calculation, data manipulation, business process, user interaction, or any other specific functionality which defines what function a system is likely to perform. (d)Manipulation of numeric data collected from a research station. Software conforming to an application binary interface (ABI) runs as shrink-wrapped software on all vendor systems with the same microprocessor architecture. We are still in early days and havent ran into even a small percentage of the problems that we will as this technology ages when we are using kernels, container engines, and images which are of vastly different ages from built by Linux distributions which take wildly different approaches to building kernels and binaries, we will see more and more problems. (i)Identify the training method that he would be using To demonstrate supportability, lets run some tests with a container image called Red Hat Universal Base Image 8 (UBI) and a container host based on RHEL 8 Server: This demonstrates a completely supportable image and host combination, which is also compatible, and portable. They also want too avoid lock-ins (on certain libraries or dependencies). The portability and compatibility of the ten external quality factors of software are somewhat confused at the beginning, and the definitions of these two properties are partially similar. Software can be compiled and linked from source code for different operating systems and processors if written in a programming language supporting compilation for the platforms. Expanding the scope of container images which are supported, increases the testing, analysis, and repair matrix at a non-linear growth rate. 2. It is to determine whether your software application or product is proficient enough to run in different browsers, databases, hardware, operating system, mobile devices, and networks. As users usually don't have access to the source code and they are not skilled enough to do it, it's a task for developers. What happens if the docker daemon triggers a kernel bug when it is trying to create a container on a version of a kernel for which it was not tested or certified to work with? configuration testing means testing team verifies build. This characteristic is composed of the following sub-characteristics: First, notice that Podman is able to mount the container image. Standard operating environment . Judes intends to select a file organization method for an information system that he was designing for a client. The docker daemon provides no compatibility guarantees any incidental compatibility is provided by the Linux kernel and Glibc. Standardizing on this image format lets us build infrastructure like registry servers which can be used to store any container image, be it RHEL 6, RHEL 7, RHEL8, Fedora, or even Windows container images. Portability in high-level computer programming is the usability of the same software in different environments. This means the document may have a different format or use a . List three factors that determines the cost of a computer. Containers do not offer compatibility guarantees; only virtualization can do that. Hardware Compatibility Requirements are functional requirements? When operating systems of the same family are installed on two computers with processors with similar instruction sets it is often possible to transfer the files implementing program files between them. Others may feel that a significant amount of restructuring at the source level is still consistent with portability. Because Android is an open source project, any hardware manufacturer can build a device that runs the Android operating system. Drive letters and the backslash as path delimiter are not accepted on all operating systems. The Program Compatibility Assistant detects compatibility issues and allows you to reinstall using the recommended settings. Lets analyze a few key log messages to see why. Give an example in each case. Vertical portability refers to consistency of software throught whole lifecycle, which can be ensured with Infrastructure as code. 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