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ITU Online

ITU Online is a leading IT training company offering extensive courses designed to prepare student to numerous IT Certifications. Our library covers certifications based around CompTIA, Cybersecurity, Microsoft, Project Mangement, Cisco and many more.

What is WebVTT (Web Video Text Tracks)?

Definition: WebVTT (Web Video Text Tracks) WebVTT (Web Video Text Tracks) is a format for displaying timed text tracks (such as subtitles or captions) in connection with HTML5 video. It is used to provide a textual representation of audio tracks, enabling accessibility and offering additional information like captions, subtitles, descriptions, and chapters in web videos. …

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What is Virtual Machine Disk (VMDK)?

Definition: Virtual Machine Disk (VMDK) A Virtual Machine Disk (VMDK) is a file format used by VMware virtual machines to store virtual disks. These files are an essential part of a virtual machine’s environment, containing all the data of a virtual machine’s hard disk. VMDKs enable virtual machines to operate independently of the underlying hardware …

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What is PDF (Portable Document Format)?

Definition: PDF (Portable Document Format) A PDF, or Portable Document Format, is a file format developed by Adobe Systems in 1993 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. PDF files encapsulate a complete description of a fixed-layout flat document, including the text, fonts, …

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What Is a Failover System?

Definition: Failover System A failover system is a backup operational mode in which the functions of a system component, such as a processor, server, network, or database, are assumed by secondary components when the primary component fails. This mechanism ensures continuous availability and reliability of services in case of hardware or software failures. Introduction to …

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What Is a Virtual Machine Image?

Definition: Virtual Machine Image A Virtual Machine Image (VMI) is a file that encapsulates the entire state of a virtual machine at a given point in time. This includes the operating system, applications, data, and configurations. VMIs are used to create and replicate virtual machines, ensuring consistency and reliability across different environments. Introduction to Virtual …

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