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Red Hat Certification Program
Red Hat, an IBM subsidiary specializing in computer software, offers different level of certification programs, most of which specialize in system administration. Certifications can be validated through Red Hat webpage, and expire after 3 years. Certifications Red Hat Certified System Administrator (RHCSA) RHCSA is an entry-level certification that focuses on competencies at system administration, including installation and configuration of a Red Hat Enterprise Linux system and attach it to a live network running network services. To achieve the RHCSA certification the student must pass ''EX200'', a 3-hour hands-on lab exam. The minimum passing score for the exam is 210 out of 300 possible points (70%). There is no prerequisite for the exam, but Red Hat recommends preparing for the exam by taking courses in Red Hat System AdministrationRH124anRH134 if one does not have previous experience. RHCSA was launched in 2002 as Red Hat Certified Technician (RHCT). As of July 2009 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Hat
Red Hat, Inc. is an American software company that provides open source software products to enterprises. Founded in 1993, Red Hat has its corporate headquarters in Raleigh, North Carolina, with other offices worldwide. Red Hat has become associated to a large extent with its enterprise operating system Red Hat Enterprise Linux. With the acquisition of open-source enterprise middleware vendor JBoss, Red Hat also offers Red Hat Virtualization (RHV), an enterprise virtualization product. Red Hat provides storage, operating system platforms, middleware, applications, management products, and support, training, and consulting services. Red Hat creates, maintains, and contributes to many free software projects. It has acquired several proprietary software product codebases through corporate mergers and acquisitions and has released such software under open source licenses. , Red Hat is the second largest corporate contributor to the Linux kernel version 4.14 after Intel. On Octob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software
Software is a set of computer programs and associated documentation and data. This is in contrast to hardware, from which the system is built and which actually performs the work. At the lowest programming level, executable code consists of machine language instructions supported by an individual processor—typically a central processing unit (CPU) or a graphics processing unit (GPU). Machine language consists of groups of binary values signifying processor instructions that change the state of the computer from its preceding state. For example, an instruction may change the value stored in a particular storage location in the computer—an effect that is not directly observable to the user. An instruction may also invoke one of many input or output operations, for example displaying some text on a computer screen; causing state changes which should be visible to the user. The processor executes the instructions in the order they are provided, unless it is instructed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
System Administrator
A system administrator, or sysadmin, or admin is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems, especially multi-user computers, such as servers. The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so. To meet these needs, a system administrator may acquire, install, or upgrade computer components and software; provide routine automation; maintain security policies; troubleshoot; train or supervise staff; or offer technical support for projects. Related fields Many organizations staff offer jobs related to system administration. In a larger company, these may all be separate positions within a computer support or Information Services (IS) department. In a smaller group they may be shared by a few sysadmins, or even a single person. * A database administrator (DBA) maintains a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ansible (software)
Ansible is a suite of software tools that enables infrastructure as code. It is open-source and the suite includes software provisioning, configuration management, and application deployment functionality. Originally written by Michael DeHaan and acquired by Red Hat in 2015, Ansible is designed to configure both Unix-like systems and Microsoft Windows. Ansible is agentless, relying on temporary remote connections via SSH or Windows Remote Management which allows PowerShell execution. The Ansible control node runs on most Unix-like systems that are able to run Python, including Windows with Windows Subsystem for Linux installed. System configuration is defined in part by using its own declarative language. History The term "ansible" was coined by Ursula K. Le Guin in her 1966 novel ''Rocannon's World'', and refers to fictional instantaneous communication systems. The Ansible tool was developed by Michael DeHaan, the author of the provisioning server application Cobbler and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enterprise Software
Enterprise software, also known as enterprise application software (EAS), is computer software used to satisfy the needs of an organization rather than individual users. Such organizations include businesses, schools, interest-based user groups, clubs, charities, and governments. Enterprise software is an integral part of a (computer-based) information system; a collection of such software is called an enterprise system. These systems handle a number of operations in an organization to enhance the business and management reporting tasks. The systems must process the information at a relatively high speed and can be deployed across a variety of networks. Services provided by enterprise software are typically business-oriented tools. As enterprises have similar departments and systems in common, enterprise software is often available as a suite of customizable programs. Generally, the complexity of these tools requires specialist capabilities and specific knowledge. Enterprise com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System-level Virtualization
OS-level virtualization is an operating system (OS) paradigm in which the Kernel (computer science), kernel allows the existence of multiple isolated user space instances, called ''containers'' (LXC, Solaris Containers, Solaris containers, Docker (software), Docker, Podman), ''zones'' (Solaris Containers, Solaris containers), ''virtual private servers'' (OpenVZ), ''partitions'', ''virtual environments'' (VEs), ''virtual kernels'' (vkernel, DragonFly BSD), or ''jails'' (FreeBSD jail or chroot jail). Such instances may look like real computers from the point of view of programs running in them. A computer program running on an ordinary operating system can see all resources (connected devices, files and folders, Shared resource, network shares, CPU power, quantifiable hardware capabilities) of that computer. However, programs running inside of a container can only see the container's contents and devices assigned to the container. On Unix-like operating systems, this feature can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft Windows
Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for servers, and Windows IoT for embedded systems. Defunct Windows families include Windows 9x, Windows Mobile, and Windows Phone. The first version of Windows was released on November 20, 1985, as a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces (GUIs). Windows is the most popular desktop operating system in the world, with 75% market share , according to StatCounter. However, Windows is not the most used operating system when including both mobile and desktop OSes, due to Android's massive growth. , the most recent version of Windows is Windows 11 for consumer PCs and tablets, Windows 11 Enterprise for corporations, and Windows Server 2022 for servers. Genealogy By marketing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System
An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer from cellular phones and video game consoles to web servers and supercomputers. The dominant general-purpose personal computer operating system is Microsoft Windows with a market share of around 74.99%. macOS by Apple Inc. is in second place (14.84%), and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CompTIA Linux+
The Computing Technology Industry Association (CompTIA) is an American non-profit trade association that issues professional certifications for the information technology (IT) industry. It is considered one of the IT industry's top trade associations. Based in Downers Grove, Illinois, CompTIA issues vendor-neutral professional certifications in over 120 countries. The organization releases over 50 industry studies annually to track industry trends and changes. Over 2.2 million people have earned CompTIA certifications since the association was established. History CompTIA was created in 1982 as the Association of Better Computer Dealers (ABCD). ABCD later changed its name to the Computing Technology Industry Association. In 2010, CompTIA moved into its world headquarters in Downers Grove, Illinois. The building was designed to meet LEED CI Certification standards. The CompTIA portal moved to a hybrid version of the open-access model in April 2014 with exclusive content for du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linux Professional Institute
The Linux Professional Institute (LPI) is a Canadian non-profit organisation and oriented towards certifications for Linux, BSD and open-source software-based technologies. It was founded in October 1999. Linux Professional Institute Certification Programs The company offers its exams in numerous countries and languages. These exams are primarily multiple choice questions, with some written answers. These are either taken using a computer based system, or using a paper based exam. The organization allows community participation in creating and updating exams. Persons unaffiliated with the company can use exam Objectives Development wiki, or the Exam Development Mailing List to participate in the creation of new exams and the update of the existing ones. The exams are intended to be distribution-neutral rather than emphasize a particular distribution of family thereof. LPI has three different certification program tracks: Essentials Track: * Linux Professional Institute L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ubuntu Professional Certification
Ubuntu Professional Certification which was first introduced in May 2006, was a computer based examination about the Ubuntu operating system. The test was administered by the LPI (Linux Professional Institute) and the certification was part of the LPIC Linux Professional Institute (LPI) offers three different certification tracks. The core certification program, Linux Professional, contains three different levels addressing distinct aspects of Linux system administration. The organization als ... (Linux Professional Institute Certification) as an added module/exam to LPI 117-101 and LPI 117-102 certs. The LPI UCP exam code was LPI 117-199. The testee needed to pass all three exams (117-101,117-102 and 117-199) in order to receive a UCP certification. The 101 and 102 exams could be taken before or after the UCP exam(199). This certification has been discontinued as of October 2010. See also * Linux Professional Institute Certification References External linksOfficial Ubu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Information Technology Qualifications
Information is an abstract concept that refers to that which has the power to inform. At the most fundamental level information pertains to the interpretation of that which may be sensed. Any natural process that is not completely random, and any observable pattern in any medium can be said to convey some amount of information. Whereas digital signals and other data use discrete signs to convey information, other phenomena and artifacts such as analog signals, poems, pictures, music or other sounds, and currents convey information in a more continuous form. Information is not knowledge itself, but the meaning that may be derived from a representation through interpretation. Information is often processed iteratively: Data available at one step are processed into information to be interpreted and processed at the next step. For example, in written text each symbol or letter conveys information relevant to the word it is part of, each word conveys information relevant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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