Cloud Computing Fundamentals Questions and Answers

Answer: C

Correct answer: False

Cloud pricing includes the provider’s margin, its resilience and its operational staff, so per unit of steady compute it is rarely the cheapest option. What it offers is elasticity, speed and the removal of capital risk. A workload that runs flat out around the clock for years is a poor candidate on cost alone, which is why large steady consumers negotiate reservations or repatriate.

Answer: D

Both are true and the reason gives the logic, and it shows that the decision is a workload by workload one rather than a single strategic choice. Variability is what cloud rewards. Flat workloads gain the least from it.

Answer: A

Where exactly the line falls depends on the service model, moving up the stack as the service becomes more managed. Misunderstanding the line is behind a large share of cloud security incidents. The line moves with the model.

Answer: B

Both are true and the reason gives the pattern, and a customer using infrastructure as a service retains far more responsibility than one using software as a service. Knowing exactly where the line falls for each service is essential.

Answer: C

Correct answer: physical security of the data centre

The data centre is the provider’s responsibility under every shared responsibility model - the customer cannot enter it, so it cannot be theirs. Network rules, encryption keys and guest operating system patching all sit above the hypervisor and are the customer’s. The line moves upward as the service model rises: with platform and software services the provider takes on more of it.

Answer: D

Zones within a region are isolated for failure but connected with low latency. Deploying across zones protects against a single facility failure while staying within one region. Zones fail independently. Two regions are needed for regional resilience. Zone failure is the case a pair protects against.

Answer: A

Correct answer: A-2, B-4, C-1, D-3

Four terms at four different levels. A region is a geographic area containing several availability zones. An availability zone is an isolated location within a region, with its own power and cooling, which is what makes it a failure domain. An edge location is a point of presence for content delivery, closer to users than any region. And a tenant is a customer whose resources are logically isolated from every other customer’s.

Answer: B

Correct answer: True

That is precisely what availability zones are for: they are separate facilities with independent power, cooling and networking, close enough for low-latency synchronous replication and far enough apart that one failure does not take the other. Running in two of them protects against the loss of a single data centre - though not against a regional event, which is what multi-region deployment addresses.

Answer: C

The first two are correct. The third is exactly backwards, since a single zone does not even protect against the loss of that zone, let alone the whole region. Separation is the point of both. One zone protects against nothing at all.

Answer: D

Some jurisdictions require that personal data stay within national borders. Region selection is therefore a compliance decision as much as a technical one. Borders constrain placement. Compliance often decides the region chosen.