Virtualization
What is virtualization?
Virtualization is the process of using software to create a virtual version of something, making it more flexible.
What are virtual machines?
VMs are environments created by a hypervisor that act like separate computers.
What is a hybrid cloud?
A hybrid cloud combines public and private cloud services, allowing data and applications to be shared.
What is a hypervisor?
A hypervisor is software that creates and manages virtual machines by allocating hardware resources.
What is a VMM?
A VMM is a tool used to create, start, stop, save, and delete virtual machines.
What is hardware virtualization?
It virtualizes the entire computer that an operating system interacts with, creating virtual versions of hardware.
How can VM's be networked?
VMs can be connected through internal networks, to the host system, or isolated from all networks.
What is a public-cloud?
A public cloud is a service available to the general public, hosted by third-party providers.
What is a bare-metal hypervisor?
A bare-metal hypervisor runs directly on hardware without a host operating system.
What settings are typically preset in a hypervisor?
Presets include virtual RAM, storage space, and other necessary virtual hardware settings.
What is client-side virtualization?
It is when the host machine runs multiple guest operating systems and also serves as a user's workstation.
How much RAM is recomended for running VM's?
At least 4 GB of RAM is recommended for the hypervisor and each VM.
What is a private cloud?
A private cloud is owned and operated by a single organization for its own use.
What is the difference between Type 1 and Type 2 hypervisors?
Type-1 hypervisors run directly on hardware, while Type-2 hypervisors run on a full operating system.
What is an ISO file?
A complete copy of an optical disc, used for installing operating systems.
What is a snapshot?
A snapshot saves the current state of a VM, allowing quick recovery to that state later.
What should be considered for VM storage?
Ensure enough storage space, consider RAID for backups, and use SSDs for better performance.
What is a community cloud?
A community cloud is shared by several organizations with similar needs or goals.
Common hypervisor used in virtualization?
Microsoft's Hyper-X
What is the main focus of cloud computing?
Cloud computing focuses on shared resources rather than individual physical systems.
What is sandboxing?
Sandboxing is isolating untrusted software in a restricted environment to prevent it from affecting the host system.
Steps to create a virtual machine
1. Set up hardware for VMs. 2. Install a hypervisor. 3. Create a new VM. 4. Install the guest OS.
What is cloud bursting?
Cloud bursting allows an application to grow into a public cloud during peak demand instead of slowing down.
What settings are typically present in a hypervisor?
Presets include virtual RAM, storage space, and other necessary virtual hardware settings.
What does rapid elasticity mean in cloud computing?
Rapid elasticity allows the number of servers to increase quickly based on demand.