Multi-Tenancy of Resources in Cloud Computing

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What effect does adding more CPU cores to cloud servers have on performance variation?

Increases performance variation due to multi-tenancy (correct)

Improves the automated scaling mechanism

Reduces the threshold for scaling based on runtime conditions

Decreases resource contention among idle instances

What is the main concern related to multi-tenancy of resources?

Minimizing resource contention among idle instances

Ensuring equal performance for co-resident VMs (correct)

Automated scaling based on runtime conditions

Optimizing cloud server CPU core utilization

Why do identical benchmarks run on co-resident VMs not perform equally?

Threshold-based scaling criteria not being met

Resource contention due to sharing the same server (correct)

Automated ability of cloud to transparently scale resources

Application-agnostic scaling mechanisms

What could running many idle operating system instances potentially lead to?

Significant overhead for some workloads due to resource contention Signup and view all the answers

What is the main feature of elasticity in cloud computing?

Automated ability to transparently scale resources Signup and view all the answers

In what way does cloud scalability differ from traditional infrastructure scalability?

Cloud scalability is based on runtime conditions, while traditional scaling is predetermined Signup and view all the answers

What is the role of cloud brokers?

Intermediary between cloud consumers and cloud providers Signup and view all the answers

Which characteristic of cloud computing involves dynamically assigning IT resources based on demand?

Elasticity Signup and view all the answers

Which factor can impose a significant overhead on certain workloads when many idle operating system instances are running?

Resource contention among instances Signup and view all the answers

What is the primary goal of a multi-tenant model in cloud computing?

Share resources amongst multiple users to increase utilization Signup and view all the answers

What is a potential downside of running several idle OS instances on the same server?

Increased risk of resource contention and overhead Signup and view all the answers

What is the responsibility of a cloud provider?

Maintaining cloud services Signup and view all the answers

Which cloud characteristic involves measuring and billing users based on their usage?

Measured usage Signup and view all the answers

Who are the cloud resource administrators?

Individuals who maintain cloud services Signup and view all the answers

Which role conducts independent assessments of cloud environments?

Cloud auditor Signup and view all the answers

What issue can arise when implementing a single tenant model in cloud computing?

Resource underutilization Signup and view all the answers

What is the main purpose of multi-tenancy in cloud computing?

Maximize resource sharing efficiency Signup and view all the answers

What does a cloud auditor ensure in a cloud environment?

Ensuring security, privacy, and performance Signup and view all the answers

Who may use a cloud provider to provide a cloud service?

Cloud service owner Signup and view all the answers

What does ubiquitous access mean in the context of cloud services?

"Widely accessible" cloud services Signup and view all the answers

What is the function of cloud carriers in the cloud ecosystem?

Facilitate network connectivity between cloud consumers and providers Signup and view all the answers

Which organization is responsible for fulfilling SLAs for cloud services?

Cloud provider Signup and view all the answers

In which scenario would a cloud provider 'resell' IT resources from other cloud providers?

When consuming cloud services Signup and view all the answers

Who are the individuals responsible for providing and maintaining cloud services?

'Cloud resource' administrators Signup and view all the answers

Why is an application agnostic threshold considered non-ideal?

It may not accurately reflect the specific needs of an application. Signup and view all the answers

What is one purpose of measuring the usage of IT resources on a cloud platform?

To track and bill for the actual resource consumption. Signup and view all the answers

In what ways can cloud platform measurements be used other than for billing purposes?

To support auto-scaling based on specific metrics. Signup and view all the answers

What is an example of a time-based granularity for measuring IT resource usage?

Hour Signup and view all the answers

Which metric can be used for throughput-based measurements on a cloud platform?

Data transfer rate (MB/sec) Signup and view all the answers

How does resiliency in a cloud environment contribute to system reliability?

By providing distributed redundancy across physical locations. Signup and view all the answers

Why are historical models important for load prediction in cloud computing?

They help in optimizing cloud footprint by analyzing past trends. Signup and view all the answers

How does AWS EC2 Scaling Example demonstrate adaptability in cloud services?

By adjusting resources based on predicted demand changes. Signup and view all the answers

Which cloud delivery model provides raw 'IT' resources like hardware, network, and containers on demand?

Infrastructure as a Service (IaaS) Signup and view all the answers

Which cloud deployment model leverages economies of scale within a specific community?

Community Cloud Signup and view all the answers

Which cloud service abstracts nearly all server infrastructure management from the user?

Software as a Service (SaaS) Signup and view all the answers

What does 'cloud bursting' refer to in the context of cloud computing?

Scaling beyond one cloud when resource requirements exceed local limitations Signup and view all the answers

Which cloud model allows the cloud consumer to manage resources in bundles and specifies cloud infrastructures using JSON/YAML?

Infrastructure as a Service (IaaS) Signup and view all the answers

Which cloud deployment model typically involves aggregating two or more clouds together and can be public-public or private-private?

Hybrid Cloud Signup and view all the answers

Which type of cloud provides predefined, ready-to-use hosting environments and obscures infrastructure from end users?

Platform as a Service (PaaS) Signup and view all the answers

What distinguishes a community cloud from other types of clouds?

Specialized cloud built and shared by a particular community to leverage economies of scale Signup and view all the answers

What is the main advantage of a Storage Area Network (SAN) compared to local storage on servers?

Allows for easier and immediate scalability of storage Signup and view all the answers

Which protocol is considered a cheaper alternative to Fibre Channel in a Storage Area Network (SAN)?

Fibre Channel over Ethernet (FCoE) Signup and view all the answers

What is the purpose of a 'datastore' in the context of virtualized storage?

It is the storage location where the Virtual Disks of a VM are stored Signup and view all the answers

Which file system is utilized by VMware for managing virtualized storage?

VMFS Signup and view all the answers

What is the purpose of the 'Fabric Layer' in a Storage Area Network (SAN)?

It contains the physical equipment and cabling of the SAN Signup and view all the answers

What is the main benefit of a Storage Area Network (SAN) compared to local server storage?

Ability to be located off-site Signup and view all the answers

What is the purpose of the 'Host Layer' in a Storage Area Network (SAN)?

It grants access to files for users Signup and view all the answers

What is the primary purpose of the SOAP envelope in a SOAP API request?

To modify the underlying HTTP content with SOAP request requirements Signup and view all the answers

Which of the following SOAP standards is responsible for specifying security measures like using unique identifiers called tokens?

Web Services Security (WS-Security) Signup and view all the answers

What is the primary purpose of the Web Services Description Language (WSDL) in the context of SOAP web services?

To describe the scope and function of SOAP web services Signup and view all the answers

Which of the following SOAP standards is responsible for standardizing error handling in SOAP messaging?

WS-ReliableMessaging Signup and view all the answers

What is the primary format of the response returned by a SOAP API?

XML documents Signup and view all the answers

Which of the following SOAP standards is responsible for requiring the inclusion of routing information as metadata?

Web Services Addressing (WS-Addressing) Signup and view all the answers

What is the primary characteristic of SOAP that defines rigid communication rules?

It has several associated standards that control every aspect of the data exchange Signup and view all the answers

What is the main purpose of desktop virtualization?

To provide computing resources for mobile workers without the need for hardware Signup and view all the answers

Which type of virtual network allows VMs to communicate on a private network set up on the host computer, without having translated IP addresses to connect to the external network?

Host-only Network Signup and view all the answers

What is the main purpose of using virtualized applications?

To create a packaged virtual app that contains the program and system requirements, and deliver it to the end-user Signup and view all the answers

What is the main strategy behind 'Convergence' in the context of the provided text?

Maintaining applications running on the hardware-based data center Signup and view all the answers

Which type of virtual network allows VMs to use an IP translated from the host's IP (using a NAT device) and communicate on a private network set up on the host computer?

NAT Signup and view all the answers

What is the main purpose of a Bridged Network in the context of virtual networks?

To allow VMs to communicate on a private network set up on the host computer, without having translated IP addresses to connect to the external network Signup and view all the answers

What is the main purpose of the 'Containment' strategy mentioned in the context of 'Convergence'?

To maintain applications running on the hardware-based data center Signup and view all the answers

What is the main advantage of REST over SOAP in modern application design?

REST offers greater scalability and flexibility, aligning with modern architectural patterns. Signup and view all the answers

When might it be preferable to use SOAP over REST?

When integrating or extending legacy systems that already have SOAP APIs. Signup and view all the answers

Which type of APIs are better suited for REST, according to the text?

Public APIs with lower security requirements and a demand for greater flexibility. Signup and view all the answers

What is a potential drawback of using SOAP compared to REST?

SOAP requires an additional layer of WS-Security, introducing communication overheads. Signup and view all the answers

Which statement about SOAP and REST is true, based on the given information?

REST supports HTTPS without additional overheads, unlike SOAP. Signup and view all the answers

What type of APIs may benefit from the tighter security measures of SOAP?

Private APIs for internal enterprise requirements with high security needs. Signup and view all the answers

Which statement accurately compares the reliability of SOAP and REST?

SOAP is more reliable than REST due to its built-in error handling logic. Signup and view all the answers

What is the primary benefit of using SOAP over REST APIs for applications that require high data integrity?

SOAP has built-in compliance for ACID (atomicity, consistency, isolation, and durability) properties Signup and view all the answers

How does GraphQL differ from RESTful APIs in terms of data retrieval?

GraphQL provides a single aggregated endpoint, while RESTful APIs require multiple endpoint calls Signup and view all the answers

Which of the following is a key advantage of using SOAP over REST APIs for applications that require high data integrity?

SOAP has built-in compliance for ACID (atomicity, consistency, isolation, and durability) properties Signup and view all the answers

What is the main difference between REST APIs and GraphQL in terms of data retrieval?

REST APIs require the client to call multiple endpoints to obtain separate data, while GraphQL provides a single aggregated endpoint Signup and view all the answers

Which of the following is a key advantage of using GraphQL over RESTful APIs?

GraphQL allows clients to request only the data they need, rather than retrieving an entire dataset Signup and view all the answers

What is the main reason SOAP may be better suited for applications that require high data integrity?

SOAP has built-in compliance for ACID (atomicity, consistency, isolation, and durability) properties Signup and view all the answers

How does the use of SOAP APIs differ from REST APIs in terms of enforcing data integrity?

REST APIs require additional software modules to enforce state at the server or database level, while SOAP APIs have built-in support for ACID properties Signup and view all the answers

What is the primary advantage of using GraphQL over RESTful APIs for data retrieval?

GraphQL allows clients to request only the data they need, rather than retrieving an entire dataset from multiple RESTful API endpoints Signup and view all the answers

Which of the following is a key benefit of using SOAP APIs over REST APIs for applications that require high data integrity?

SOAP has built-in compliance for ACID (atomicity, consistency, isolation, and durability) properties Signup and view all the answers

Multi-Tenancy of Resources in Cloud Computing

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Questions and Answers

What effect does adding more CPU cores to cloud servers have on performance variation?

What is the main concern related to multi-tenancy of resources?

Why do identical benchmarks run on co-resident VMs not perform equally?

What could running many idle operating system instances potentially lead to?

What is the main feature of elasticity in cloud computing?

In what way does cloud scalability differ from traditional infrastructure scalability?

What is the role of cloud brokers?

Which characteristic of cloud computing involves dynamically assigning IT resources based on demand?

Which factor can impose a significant overhead on certain workloads when many idle operating system instances are running?

What is the primary goal of a multi-tenant model in cloud computing?

What is a potential downside of running several idle OS instances on the same server?

What is the responsibility of a cloud provider?

Which cloud characteristic involves measuring and billing users based on their usage?

Who are the cloud resource administrators?

Which role conducts independent assessments of cloud environments?

What issue can arise when implementing a single tenant model in cloud computing?

What is the main purpose of multi-tenancy in cloud computing?

What does a cloud auditor ensure in a cloud environment?

Who may use a cloud provider to provide a cloud service?

What does ubiquitous access mean in the context of cloud services?

What is the function of cloud carriers in the cloud ecosystem?

Which organization is responsible for fulfilling SLAs for cloud services?

In which scenario would a cloud provider 'resell' IT resources from other cloud providers?

Who are the individuals responsible for providing and maintaining cloud services?

Why is an application agnostic threshold considered non-ideal?

What is one purpose of measuring the usage of IT resources on a cloud platform?

In what ways can cloud platform measurements be used other than for billing purposes?

What is an example of a time-based granularity for measuring IT resource usage?

Which metric can be used for throughput-based measurements on a cloud platform?

How does resiliency in a cloud environment contribute to system reliability?

Why are historical models important for load prediction in cloud computing?

How does AWS EC2 Scaling Example demonstrate adaptability in cloud services?

Which cloud delivery model provides raw 'IT' resources like hardware, network, and containers on demand?

Which cloud deployment model leverages economies of scale within a specific community?

Which cloud service abstracts nearly all server infrastructure management from the user?

What does 'cloud bursting' refer to in the context of cloud computing?

Which cloud model allows the cloud consumer to manage resources in bundles and specifies cloud infrastructures using JSON/YAML?

Which cloud deployment model typically involves aggregating two or more clouds together and can be public-public or private-private?

Which type of cloud provides predefined, ready-to-use hosting environments and obscures infrastructure from end users?

What distinguishes a community cloud from other types of clouds?

What is the main advantage of a Storage Area Network (SAN) compared to local storage on servers?

Which protocol is considered a cheaper alternative to Fibre Channel in a Storage Area Network (SAN)?

What is the purpose of a 'datastore' in the context of virtualized storage?

Which file system is utilized by VMware for managing virtualized storage?

What is the purpose of the 'Fabric Layer' in a Storage Area Network (SAN)?

What is the main benefit of a Storage Area Network (SAN) compared to local server storage?

What is the purpose of the 'Host Layer' in a Storage Area Network (SAN)?

What is the primary purpose of the SOAP envelope in a SOAP API request?

Which of the following SOAP standards is responsible for specifying security measures like using unique identifiers called tokens?

What is the primary purpose of the Web Services Description Language (WSDL) in the context of SOAP web services?

Which of the following SOAP standards is responsible for standardizing error handling in SOAP messaging?

What is the primary format of the response returned by a SOAP API?

Which of the following SOAP standards is responsible for requiring the inclusion of routing information as metadata?

What is the primary characteristic of SOAP that defines rigid communication rules?

What is the main purpose of desktop virtualization?

Which type of virtual network allows VMs to communicate on a private network set up on the host computer, without having translated IP addresses to connect to the external network?

What is the main purpose of using virtualized applications?

What is the main strategy behind 'Convergence' in the context of the provided text?

Which type of virtual network allows VMs to use an IP translated from the host's IP (using a NAT device) and communicate on a private network set up on the host computer?

What is the main purpose of a Bridged Network in the context of virtual networks?

What is the main purpose of the 'Containment' strategy mentioned in the context of 'Convergence'?

What is the main advantage of REST over SOAP in modern application design?

When might it be preferable to use SOAP over REST?

Which type of APIs are better suited for REST, according to the text?

What is a potential drawback of using SOAP compared to REST?

Which statement about SOAP and REST is true, based on the given information?

What type of APIs may benefit from the tighter security measures of SOAP?

Which statement accurately compares the reliability of SOAP and REST?

What is the primary benefit of using SOAP over REST APIs for applications that require high data integrity?

How does GraphQL differ from RESTful APIs in terms of data retrieval?

Which of the following is a key advantage of using SOAP over REST APIs for applications that require high data integrity?

What is the main difference between REST APIs and GraphQL in terms of data retrieval?

Which of the following is a key advantage of using GraphQL over RESTful APIs?

What is the main reason SOAP may be better suited for applications that require high data integrity?

How does the use of SOAP APIs differ from REST APIs in terms of enforcing data integrity?

What is the primary advantage of using GraphQL over RESTful APIs for data retrieval?

Which of the following is a key benefit of using SOAP APIs over REST APIs for applications that require high data integrity?