QEMU(Quick Emulator) KVM (Kernel-based Virtual Machine)

1. Hardware virtualization: Utilizes hardware-assisted virtualization extensions for improved performance.
2. Emulation: Provides the ability to emulate various hardware platforms and architectures.
3. Full virtualization: Supports running multiple guest operating systems concurrently on a single host system.
4. Memory management: Efficiently manages memory allocation and usage for virtual machines.

Before learning QEMU/KVM (Quick Emulator/Kernel-based Virtual Machine), it's beneficial to have the following skills:

1. Operating system fundamentals: Understanding of operating system concepts like processes, memory management, file systems, and networking is crucial for working with virtual machines.

2. Linux command line: Proficiency in using the Linux command line interface (CLI) is essential since QEMU/KVM is primarily used on Linux systems. Familiarity with commands for managing files, directories, users, and permissions is necessary.

3. Basic virtualization concepts: Knowledge of virtualization fundamentals, such as hypervisors, virtual machines, guest operating systems, and virtual networking, will provide a solid foundation for learning QEMU/KVM.

4. Computer architecture: Understanding basic computer architecture principles, including CPU, memory, storage, and input/output (I/O), is helpful for comprehending how virtualization works at the hardware level.

By learning QEMU (Quick Emulator) and KVM (Kernel-based Virtual Machine), you gain several skills that are valuable for virtualization and system administration:

1. Virtualization expertise: You'll acquire in-depth knowledge of virtualization concepts, including hypervisors, virtual machines (VMs), virtual networking, and storage management.

2. Hands-on experience: Working with QEMU/KVM involves practical tasks such as creating, configuring, and managing virtual machines, which enhances your hands-on experience with virtualization technology.

3. Linux administration skills: Since QEMU/KVM is commonly used on Linux platforms, you'll develop Linux system administration skills, including package management, system configuration, and troubleshooting.

4. Performance optimization: You'll learn techniques for optimizing the performance of virtualized environments, such as tuning VM configurations, managing system resources, and monitoring performance metrics.