Type-1 hypervisors operate directly on physical hardware without any intervening operating system. Type-2 hypervisors run as an application installed on an existing operating system. Type-1 hypervisors perform much better than Type-2 hypervisors since there is no intervening layer to negotiate between themselves and the system hardware, nor do they need to contend for resources with another controlling layer of software. Why then are Type-2 hypervisors widely used? What are some of the use cases?
Answer to relevant QuestionsWhen virtualization first appeared in the x86 marketplace, many server vendors were skeptical of the technology and were concerned that consolidation would impact the sales of servers. Instead, server vendors found that they ...Briefly describe the difference between DAC and RBAC. For the DAC model discussed in Section 15.3, an alternative representation of the protection state is a directed graph. Each subject and each object in the protection state is represented by a node (a single node is used for ...Consider an automated audit log analysis tool (e.g., swatch). Can you propose some rules which could be used to distinguish “suspicious activities” from normal user behavior on a system for some organization? List some benefits and disadvantages of blocking and non-blocking primitives for message passing.
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