01 - Introduction to Virtualization and VMs
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Questions and Answers

What is the main difference between containers and traditional simulators/emulators?

  • Traditional simulators/emulators encapsulate applications and their dependencies.
  • Traditional simulators/emulators share the host's kernel.
  • Containers provide an isolated environment for running applications. (correct)
  • Containers replicate an entire hardware system.

How do containers create a consistent environment for running applications?

  • By replicating the environment needed for applications. (correct)
  • By providing direct access to physical hardware.
  • By sharing the host's kernel.
  • By simulating at the hardware level.

In virtual machines (VMs), what type of access does the HVM layer provide to the OS?

  • Optimized access for Hypervisor API calls
  • Limited access to system VM processes
  • Shared access with the host OS
  • **Direct hardware access** (correct)

What is the main difference between simulation and emulation?

<p>Simulation aims to replicate hardware or software, while emulation models behavior. (B)</p> Signup and view all the answers

What does containerization aim to achieve across multiple environments?

<p><strong>Ensuring consistency</strong> (B)</p> Signup and view all the answers

How would you describe a virtual machine (VM) in the context of simulation vs. emulation?

<p>VMs are simulators as they model behavior rather than replicate hardware or software. (A)</p> Signup and view all the answers

What is the primary role of a hypervisor in a virtualized environment?

<p><strong>Manage and allocate resources</strong> (A)</p> Signup and view all the answers

In the context of virtualization, what does it typically involve?

<p>Partitioning a physical machine into multiple virtual machines with their own operating systems. (D)</p> Signup and view all the answers

What is the key aspect that distinguishes emulation from simulation?

<p>Emulation aims to replicate hardware or software, while simulation doesn't. (C)</p> Signup and view all the answers

Which process involves creating an abstract model of a system without replicating hardware or software?

<p>Simulation (A)</p> Signup and view all the answers

When it comes to making one system behave like another, what process is being described?

<p>Emulation (D)</p> Signup and view all the answers

What is a key feature of bare-metal hypervisors?

<p>Hardware independence (D)</p> Signup and view all the answers

What is the main purpose of development environments within the context of VMs?

<p>Building, testing, and refining applications (A)</p> Signup and view all the answers

What is a common use case for server consolidation using VMs?

<p>Reducing hardware costs (A)</p> Signup and view all the answers

Which term refers to the process of combining multiple small physical servers into fewer, larger servers for cost efficiency?

<p>Server consolidation (D)</p> Signup and view all the answers

What distinguishes bare-metal hypervisors from hosted hypervisors in terms of their host OS?

<p>Bare-metal hypervisors require a separate guest OS for each VM (B)</p> Signup and view all the answers

Which feature allows capturing the state of a VM at a specific point in time?

<p>Snapshotting (A)</p> Signup and view all the answers

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