AZ-900 · Practice set 3 of 5
Cloud Computing and Shared Responsibility: 10 practice questions
10 free AZ-900 practice questions on Cloud Computing and Shared Responsibility, with an explanation for every answer. Untimed. The full mock exam and the timed version are in the app.
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Question 1 of 10
What is cloud computing?
- AThe replacement of internet services with a private network
- BBuying physical servers for an on-site datacenter
- CThe maintenance of computing services without internet delivery
- DThe delivery of computing services over the internet
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Look at the delivery mechanism. Cloud computing is defined by delivering computing services over the internet rather than owning physical buildings or hardware. Whether you need compute, storage, databases, or networking, internet delivery is what turns physical server capacity into an immediate request.
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Question 2 of 10
Which resource is always the cloud provider's responsibility?
- AThe physical hosts in the provider's datacenter
- BThe customer's accounts and identities in the environment
- CThe customer's devices permitted to connect to the cloud
- DCustomer information stored in cloud services
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Look at where the consumer cannot go. The cloud provider owns the physical datacenter, physical network, and physical hosts because the consumer is not in the building. Across IaaS, PaaS, and SaaS from a cloud provider, that provider manages its physical infrastructure.
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Question 3 of 10
Which item always remains the cloud consumer's responsibility?
- AThe power and cooling for the physical datacenter
- BPhysical hosts running the cloud platform
- CThe information and data stored in the cloud
- DThe physical network inside the provider's datacenter
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Find the asset that belongs to your organization rather than the facility. In the shared responsibility model, the consumer owns three fixed assets: information and data, connected devices, and accounts and identities. The physical datacenter and its physical equipment stay with the provider across every service type.
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Question 4 of 10
Which set contains responsibilities that can shift with the cloud service type?
- APhysical datacenters, physical networks, and physical hosts
- BDatacenter power, datacenter cooling, and physical security
- COperating systems, network controls, and applications
- DCustomer data, connected devices, and customer accounts
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Separate the two fixed buckets from the movable middle. When a cloud provider hosts IaaS, PaaS, or SaaS, it manages its physical infrastructure. The consumer still manages its own data, connected devices, and user accounts across these service types. Software and control layers, including operating systems, network controls, and applications, form the middle bucket that shifts between consumer and provider as service types change.
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Question 5 of 10
How does responsibility generally change from IaaS through PaaS to SaaS?
- AMore responsibility shifts from the consumer to the provider
- BMore physical datacenter responsibility shifts to the consumer
- CMore customer data responsibility shifts to the provider
- DEvery responsibility shifts from the provider to the consumer
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Think of the cloud service spectrum as a slope from left to right. Infrastructure as a service places the most responsibility on the consumer. Platform as a service sits between them, and software as a service places most responsibility on the provider. Each step to the right hands another movable layer to the provider.
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Question 6 of 10
Which statement describes the responsibility of an organization that runs its own on-premises datacenter?
- AThe provider maintains the database while the customer manages its data
- BThe organization is responsible for the entire infrastructure and software stack
- CThe provider remains responsible for the physical hosts and network
- DThe consumer and provider divide duties according to the service type
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Notice whether a cloud provider is involved at all. In an on-premises datacenter, there is no line to draw because everything sits on one side. The organization is responsible for physical space, power, cooling, hardware replacement, operating systems, and software patches. The shared responsibility model only starts once an external provider enters the picture.
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Question 7 of 10
Which cloud characteristic supports rapid infrastructure expansion?
- ACapacity can be obtained without first building another physical datacenter
- BCapacity requires replacing internet delivery with dedicated on-site networking
- CCapacity can increase only after the organization installs new physical servers
- DCapacity remains constrained by the organization's existing datacenter footprint
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Notice how lead time changes when capacity arrives over the internet. Cloud computing is not constrained by physical infrastructure like a traditional datacenter. A retail team facing a seasonal launch deploys extra capacity as a request and scales down afterwards, rather than waiting to build another datacenter.
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Question 8 of 10
A company uses a cloud SQL database. Who maintains the database, and who remains responsible for the ingested data?
- AThe consumer maintains both the physical hosts and the provider's physical network
- BThe provider maintains the database; the consumer remains responsible for the data
- CThe provider maintains both the database and the consumer's access decisions
- DThe consumer maintains the database; the provider becomes responsible for the data
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Check the resource layer being deployed. With a managed cloud SQL database, the provider maintains the database software, while the consumer remains responsible for the ingested data. The data bucket never shifts to the provider, but deploying a managed database hands database maintenance and software patches over to the cloud provider.
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Question 9 of 10
A team installs an SQL database on a cloud virtual machine. Which database duties belong to the consumer?
- ASupplying datacenter power and managing the provider's network connectivity
- BMaintaining the physical host and cooling and securing the datacenter
- CMaintaining the provider's physical network and replacing its physical hosts
- DApplying database patches and updates and maintaining the stored data
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The clue is that your team installs the SQL database on a virtual machine. That puts database patches and updates with you because you installed the database software. The stored data also remains yours. The provider owns the physical hosts and physical datacenter, which sit below the software you installed.
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Question 10 of 10
An organization wants the provider to carry most service responsibility while the organization retains its data and identities. Which service type best matches?
- AOn-premises, where the provider maintains the full software stack
- BSaaS, where most responsibility rests with the provider
- CIaaS, where the consumer carries the most responsibility
- DPaaS, where every responsibility rests entirely with the consumer
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Follow the responsibility slope toward maximum provider management. Infrastructure as a service places the most responsibility on the consumer. Software as a service places most responsibility on the provider, while platform as a service sits between them. In SaaS, the provider manages applications and infrastructure, while you retain your data and identities.
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