CAS-002 · Question #126
A small company hosting multiple virtualized client servers on a single host is considering adding a new host to create a cluster. The new host hardware and operating system will be different from…
The correct answer is A. Increased customer data availability. Adding a second host with compatible virtualization technology to form a cluster with shared iSCSI storage is a standard high-availability architecture designed to keep customer virtual machines accessible during host failures.
Question
A small company hosting multiple virtualized client servers on a single host is considering adding a new host to create a cluster. The new host hardware and operating system will be different from the first host, but the underlying virtualization technology will be compatible. Both hosts will be connected to a shared iSCSI storage solution. Which of the following is the hosting company MOST likely trying to achieve?
Options
- AIncreased customer data availability
- BIncreased customer data confidentiality
- CIncreased security through provisioning
- DIncreased security through data integrity
How the community answered
(38 responses)- A87% (33)
- B3% (1)
- C5% (2)
- D5% (2)
Why each option
Adding a second host with compatible virtualization technology to form a cluster with shared iSCSI storage is a standard high-availability architecture designed to keep customer virtual machines accessible during host failures.
A two-node virtualization cluster connected to shared iSCSI storage allows virtual machines to fail over automatically from one host to the other if a hardware or operating system failure occurs, increasing uptime and ensuring that customer data and services remain continuously available despite node-level outages.
Confidentiality involves protecting data from unauthorized access through mechanisms such as encryption and access controls, neither of which is achieved by adding a second host to a cluster.
Security through provisioning refers to automated and secure configuration management of resources, which is not the primary function of a clustering and shared-storage architecture.
Data integrity ensures that information remains accurate and unaltered, which is addressed by hashing and checksums, not by clustering hosts for failover redundancy.
Concept tested: Virtualization clustering for high availability and uptime
Source: https://csrc.nist.gov/publications/detail/sp/800-125a/final
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