The distinction between a covert storage channel and a covert timing channel is not clear-cut. Every timing channel can be transformed into an equivalent storage channel. Explain how this transformation could be done.
What will be an ideal response?
Covert channels typically require access to a shared clock to time when bits become available in the covert resource and when bits can be replaced. Thus, even with pure storage channels, there is an element of timing.
A covert timing channel works by modulating the time at which something occurs. But the something (which might be an interrupt or access to the CPU or unlocking a semaphore, for example) is itself a resource (the interrupt, the processing, or the semaphore), represented by a storage table entry. Thus, the table entry or the something itself becomes the shared resource visible to the two cooperating processes from which the covert channel is built
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Provide a step-by-step description of how to create a structure chart.
What will be an ideal response?
A form of cloud computing that delivers applications over the Internet.
A. IaaS B. PaaS C. SaaS
When you create a new channel using the Channels panel, by default it becomes a(n) ____ channel.
a. transparent b. alpha c. overlay d. color
A __________ infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services.
A. community cloud B. private cloud C. hybrid cloud D. public cloud