Question
: What is an Hypervisor? Describe various hypervisor based virtualization approaches like full virtualization, para virtualization and h/w-assisted virtualization.
Answer :
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Skip in 10
A hypervisor is a critical component in cloud and infrastructure security that enables virtualization by allowing multiple operating systems to run simultaneously on a single physical machine. It acts as a layer of abstraction between the hardware and the operating systems, creating and managing virtual machines (VMs). The hypervisor allocates physical resources such as CPU, memory, storage, and network interfaces to the VMs and ensures isolation among them, which enhances security, efficiency, and scalability in cloud environments. Hypervisors are broadly classified into two types: Type 1, which runs directly on hardware (bare-metal), and Type 2, which runs on top of a host operating system. Both types serve as a foundation for different virtualization approaches, which play a major role in optimizing system performance and maintaining a secure infrastructure. Full virtualization is a virtualization approach in which the hypervisor completely emulates the underlying hardware, allowing unmodified guest operating systems to run as if they were installed on physical hardware. The hypervisor traps and
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