Cloud Characteristics

Question 1

What is a private cloud and who uses its resources?

Answer 1

A cloud infrastructure built, owned and maintained in an organization’s own data center. All resources are dedicated exclusively to that organization with no sharing

Question 2

What is the main financial trade-off of a private cloud vs a public cloud?

Answer 2

Private cloud requires large upfront capital expenditure but has no ongoing metered costs. Public cloud has no upfront cost but charges ongoing pay-as-you-go fees

Question 3

What is a public cloud?

Answer 3

A cloud infrastructure created and maintained by external providers such as Amazon, Rackspace or Microsoft. Multiple customers share the same underlying hardware while their data remains isolated

Question 4

Can customers in a public cloud see each other’s data?

Answer 4

No. While multiple customers share the same physical storage, CPUs and network their data is fully isolated and inaccessible to other customers

Question 5

What are the two main pricing models for cloud services?

Answer 5

Metered utilization - pay based on actual usage; and non-metered (fixed rate) - pay a flat fee for a maximum block of resources regardless of actual usage

Question 6

What is ingress traffic in cloud computing?

Answer 6

Data being uploaded into the cloud. Transferring data from outside into the cloud storage or service. Often has a cost per unit transferred

Question 7

What is egress traffic in cloud computing?

Answer 7

Data being sent out of the cloud to users. When customers download information from cloud services. Often priced differently from ingress traffic

Question 8

What is metered utilization pricing in cloud computing?

Answer 8

A billing model where the customer pays based on actual resource consumption. Busier months cost more. Costs are totaled and invoiced monthly

Question 9

What is non-metered (fixed rate) pricing in cloud computing?

Answer 9

A billing model where the customer pays a flat fixed price for a maximum block of resources. Upload and download activity does not change the monthly cost

Question 10

What is cloud elasticity?

Answer 10

The ability to instantly scale cloud resources up when demand increases and scale them back down when demand decreases. Often automated and available at any time

Question 11

Why is elasticity valuable for businesses with seasonal or variable workloads?

Answer 11

They can scale up infrastructure during peak periods and scale back down during slow periods. Paying only for what they need rather than maintaining maximum capacity year-round

Question 12

What makes cloud computing highly available compared to traditional on-premises infrastructure?

Answer 12

Cloud providers maintain multiple redundant data centers. If one data center has a problem other parts of the infrastructure absorb the load maintaining uptime

Question 13

What is multi-tenancy in cloud computing?

Answer 13

Multiple customers (tenants) simultaneously sharing the same cloud infrastructure. Technologies and processes keep their data isolated while shared usage allows the provider to maximize efficiency

Question 14

What is the benefit of multi-tenancy for cloud providers and customers?

Answer 14

It maximizes hardware utilization efficiency. Providers can spread infrastructure costs across many customers making cloud services more affordable for everyone

Question 15

How does cloud computing support global data availability?

Answer 15

Data can be automatically replicated and synchronized across multiple data centers around the world. Ensuring availability close to users globally and enabling seamless failover between data centers

Question 16

What is file synchronization in the context of cloud infrastructure?

Answer 16

The automatic or application-managed duplication of data across multiple data centers. Ensures data is available globally and supports continuity if one data center goes offline

Question 17

True or False: In a private cloud resources are shared with other organizations to reduce costs.

Answer 17

False. Private cloud resources are dedicated exclusively to the owning organization. No sharing occurs

Question 18

True or False: A private cloud eliminates large upfront equipment costs.

Answer 18

False. A private cloud requires significant upfront capital expenditure. It eliminates ongoing metered costs not upfront costs

Question 19

True or False: In a public cloud multiple customers may share the same physical storage and CPU hardware.

Answer 19

True. Customers share physical resources but their data remains fully isolated from each other

Question 20

True or False: Egress traffic refers to data being uploaded into the cloud.

Answer 20

False. Egress traffic is data sent out of the cloud to users. Ingress traffic is data uploaded into the cloud

Question 21

True or False: With metered utilization pricing a busier month will cost more than a slower month.

Answer 21

True. Metered pricing bills based on actual resource consumption so higher usage means higher costs

Question 22

True or False: Non-metered cloud pricing charges the customer based on how much data they upload and download.

Answer 22

False. Non-metered pricing is a fixed flat rate for a maximum block of resources regardless of actual upload or download activity

Question 23

True or False: Cloud elasticity only allows scaling up and cannot scale resources back down.

Answer 23

False. Elasticity refers to the ability to scale both up and down based on demand

Question 24

True or False: Cloud providers maintain redundancy across multiple data centers to support high availability.

Answer 24

True. If one data center experiences problems others absorb the load to maintain uptime

Question 25

True or False: Multi-tenancy means each cloud customer gets their own dedicated physical hardware.

Answer 25

False. Multi-tenancy means multiple customers share the same physical infrastructure while keeping their data isolated

Question 26

True or False: Elasticity in cloud computing can often be automated without manual intervention.

Answer 26

True. Cloud infrastructure can automatically scale up or down based on load without requiring manual action

Question 27

True or False: Public cloud providers always charge a fixed monthly rate regardless of usage.

Answer 27

False. Public cloud providers may charge metered, fixed or combined pricing depending on the service

Question 28

True or False: Data in a cloud infrastructure can be synchronized across multiple global data centers.

Answer 28

True. Cloud providers can replicate data across data centers globally either automatically or through application-managed synchronization

Question 29

Scenario: A company has high upfront budget and wants to eliminate ongoing usage fees. Private or public cloud?

Answer 29

Private cloud. High upfront equipment cost but no ongoing metered usage fees once infrastructure is in place

Question 30

Scenario: A company gets a much higher invoice after a busy month with heavy customer downloads. What billing model and what drove the cost?

Answer 30

Metered utilization. Heavy egress traffic (customer downloads) drove up the bill since they are charged based on actual resource consumption

Question 31

Scenario: A consumer pays a flat monthly fee for 2GB of cloud storage and uploads heavily that month. Does their bill change?

Answer 31

No. They are on a non-metered fixed pricing model. The monthly cost remains the same regardless of upload or download activity within their storage limit

Question 32

Scenario: A retail website has massive Black Friday traffic spikes but minimal traffic the rest of the year. How does cloud address this?

Answer 32

Cloud elasticity. The infrastructure scales up automatically for the spike and scales back down afterward so the company only pays for extra capacity when needed

Question 33

Scenario: A cloud provider's primary data center goes offline but users report no service interruption. What characteristic made this possible?

Answer 33

High availability through redundancy. The cloud provider shifted load to other data centers maintaining uptime without user-visible disruption

Question 34

Scenario: A company wants their North American database replicated to Europe and Asia for low-latency access. What cloud capability supports this?

Answer 34

Global data replication and file synchronization. Data is automatically duplicated to data centers in other regions ensuring fast local access worldwide

Question 35

Scenario: A cloud provider offers very low prices despite massive infrastructure costs. How is this economically possible?

Answer 35

Multi-tenancy. Many customers simultaneously share the same physical infrastructure allowing the provider to spread costs across all tenants and achieve maximum efficiency

Question 36

Scenario: A company is uploading large video files to cloud storage and is concerned about costs. What traffic type are they generating?

Answer 36

Ingress traffic. Data being uploaded into the cloud. They should check whether their provider charges per-unit ingress fees and monitor those line items on their invoice

Question 37

Scenario: An organization needs cloud benefits but cannot use public cloud due to regulations and lacks budget for a full private cloud. What option?

Answer 37

Community cloud. Partner with similar organizations to share infrastructure reducing individual cost while maintaining more control and compliance than a public cloud