Answer Happy

Cloud X (owned by Cloud Provider X) provides Physical Server A which hosts VirtualServers A and B. Virtual Server B hosts Ready-Made Environments A and B. CloudService Consumer A uses Virtual Server A as part of an IaaS leasing agreement in whichCloud Consumer A is charged a fixed monthly fee for unlimited access. Cloud ServiceConsumers B and C use Ready-Made Environments A and B respectively as part of aPaaS leasing agreement based on per-minute usage fees. In both cases, access is monitored via Pay-For-Use Monitor A, which keeps track of log-in and log-out times in order to calculate the usage charges that are billed to Cloud Consumers B and C.Virtual Server A begins generating a series of exceptions. Soon thereafter, Virtual Server B becomes destabilized, resulting in further exceptions being raised in Ready-MadeEnvironments A and B. Cloud Service Consumers B and C receive a series of error messages until both of their connections are dropped Finally, Physical Server A shuts down completely. A subsequent investigation reveals that Virtual Server A was the victim of a security attack performed by a malicious cloud service consumer, the attacker generated increased loads of external communication requests on Virtual Server A and the underlying network, causing Physical Server A (along with Virtual Server B) to eventually shut down.Which of the following statements accurately identifies the type of security threat that corresponds to the described attack - and -provides a solution that can directly mitigate this type of security threat within Cloud X?
A. Virtual Server A was subjected to a denial of service attack that can be mitigated by implementing the encryption and digital signature mechanisms.
B. Virtual Server A was subjected to an insufficient authorization attack that can be mitigated by implementing the digital signature and hardened virtual server image mechanisms.
C. Virtual Server A was subjected to a denial of service attack that can be mitigated by implementing the hardened virtual server image and identity and access management mechanisms.
D. Virtual Server A was subjected to an insufficient authorization attack that can be mitigated by implementing the single sign-on mechanism.