Which of the following descriptions about virtualization technology is correct?

Question

Options

• AHosted virtualization uses virtual containers to monitor virtual machines
• BPartitioning, isolation, encapsulation, and independence are all features of virtualization
• CBare metal virtualization architecture and host virtualization will be the development trend of
• DVirtualization is cloud computing

• A
  14% (5)
• B
  75% (27)
• C
  8% (3)
• D
  3% (1)

Explanation

Option B is correct because the four defining characteristics of virtualization are universally recognized as: Partitioning (splitting physical resources into multiple virtual ones), Isolation (VMs remain independent and don't interfere with each other), Encapsulation (VM state is captured as portable files), and Independence (VMs abstract away the underlying hardware). These four properties together define what virtualization fundamentally is.

Option A is wrong because hosted (Type 2) virtualization runs a hypervisor on top of a host OS - it does not use "virtual containers to monitor VMs." Containers are a separate technology concept and play no role in how hosted hypervisors work.

Option C is wrong because bare-metal (Type 1) hypervisors are generally preferred over hosted (Type 2) for production environments due to better performance and lower overhead - they are not equal co-trends. Framing them as parallel development directions misrepresents the industry direction.

Option D is wrong because virtualization is an enabling technology for cloud computing, not synonymous with it. Cloud computing is a broader service/delivery model (IaaS, PaaS, SaaS) that uses virtualization as one of its foundations.

Memory tip: Use the acronym PIEE - Partitioning, Isolation, Encapsulation, Independence - to recall the four core features of virtualization. If an exam option lists all four together, it's almost certainly correct.

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