Question
A company wants to rightsize its Amazon EC2 instances.
Which configuration change will meet this requirement with the LEAST operational overhead?
A. Add EC2 instances in another Availability Zone.
B. Change the size and type of the EC2 instances based on utilization.
C. Convert the payment method from On-Demand to Savings Plans.
D. Reprovision the EC2 instances with a larger instance type.
Answer
B. Change the size and type of the EC2 instances based on utilization.
Explanation 1
The correct answer is B. Change the size and type of the EC2 instances based on utilization.
This is because changing the size and type of the EC2 instances will only affect the instances that are underutilized. This will minimize the operational overhead, as you will not need to make any changes to the instances that are already meeting their requirements.
The other options are incorrect because:
- Option A, adding EC2 instances in another Availability Zone, will increase the number of instances that the company needs to manage. This will increase the operational overhead.
- Option C, converting the payment method from On-Demand to Savings Plans, can save the company money in the long run, but it will require some initial configuration. This will increase the operational overhead.
- Option D, reprovisioning the EC2 instances with a larger instance type, will increase the capacity of the instances. This can be useful if the company expects an increase in demand, but it will also increase the cost of the instances.
Therefore, the best option to rightsize the Amazon EC2 instances with the LEAST operational overhead is to change the size and type of the instances based on utilization.
Here are some additional things to consider when rightsizing Amazon EC2 instances:
- The workload that the instances are running.
- The amount of CPU and memory that the workload requires.
- The expected demand for the workload.
- The cost of the different instance types.
By carefully considering these factors, you can rightsize your Amazon EC2 instances to meet your needs while minimizing your costs.
Explanation 2
The option with the least operational overhead to rightsize Amazon EC2 instances would be B. Change the size and type of the EC2 instances based on utilization. This allows the company to adjust resources according to their needs without adding complexity or changing payment methods.
Changing the size and type of EC2 instances based on utilization is the best option for rightsizing because it allows for optimal resource allocation. This approach ensures that you’re not overpaying for unused resources, while also maintaining the necessary capacity for your workloads. It reduces operational overhead as it automates the process of monitoring and adjusting resources, eliminating the need for manual intervention. This can lead to significant cost savings and improved efficiency.
Explanation 3
The correct answer is B. Change the size and type of the EC2 instances based on utilization.
This is the least operationally overhead because it does not require any changes to the existing infrastructure. The company can simply monitor the utilization of their EC2 instances and then change the size or type of the instances as needed. This can be done automatically using a tool like AWS Auto Scaling.
The other options would require more operational overhead. Option A would require the company to add new EC2 instances in another Availability Zone, which would require them to create new security groups, subnets, and so on. Option C would require them to change the payment method for their EC2 instances, which would require them to contact AWS support. Option D would require them to reprovision their EC2 instances with a larger instance type, which would require them to stop and start their instances, which could disrupt their workloads.
Explanation 4
To rightsize Amazon EC2 instances with the least operational overhead, the most suitable option would be B. Change the size and type of the EC2 instances based on utilization.
Explanation:
Option A, adding EC2 instances in another Availability Zone, does not directly address rightsizing. It simply adds more instances, which may or may not be necessary based on utilization.
Option C, converting the payment method from On-Demand to Savings Plans, is a cost optimization strategy but does not directly address rightsizing. It helps reduce costs by committing to usage over a longer period but does not optimize the instance size based on utilization.
Option D, reprovisioning the EC2 instances with a larger instance type, is not the best choice for rightsizing. It involves increasing the instance size, which may lead to overprovisioning and increased costs if the current instance size is already sufficient.
Option B, changing the size and type of the EC2 instances based on utilization, is the most appropriate choice for rightsizing. By monitoring the utilization of the EC2 instances, the company can identify instances that are over or underutilized. They can then resize the instances to match the workload requirements, ensuring optimal performance and cost efficiency. This approach minimizes operational overhead as it focuses on adjusting the existing instances rather than adding or replacing them.
In summary, option B, changing the size and type of the EC2 instances based on utilization, is the best choice for rightsizing with the least operational overhead.
Explanation 5
The correct answer is B. Change the size and type of the EC2 instances based on utilization.
This is because changing the size and type of the EC2 instances will only affect the instances that are underutilized. This will minimize the impact on the company’s operations.
The other options would require more operational overhead. For example, adding EC2 instances in another Availability Zone would require the company to create new subnets and routing tables. Converting the payment method from On-Demand to Savings Plans would require the company to track their usage and make sure that they are meeting the requirements of the Savings Plan. Reprovisioning the EC2 instances with a larger instance type would require the company to stop and start the instances, which could disrupt their operations.
Here is a more detailed explanation of each option:
A. Add EC2 instances in another Availability Zone: This would increase the company’s capacity, but it would also require them to create new subnets and routing tables. This would be a significant operational overhead.
B. Change the size and type of the EC2 instances based on utilization: This would only affect the instances that are underutilized. This would minimize the impact on the company’s operations.
C. Convert the payment method from On-Demand to Savings Plans: Savings Plans offer discounted rates for predictable workloads. However, the company would need to track their usage and make sure that they are meeting the requirements of the Savings Plan. If they do not meet the requirements, they could end up paying more than they would have on On-Demand.
D. Reprovision the EC2 instances with a larger instance type: This would increase the capacity of the instances, but it would also require the company to stop and start the instances. This could disrupt their operations.
Explanation 6
Answer: The option that will meet the company’s requirement with the least operational overhead is B. Change the size and type of the EC2 instances based on utilization.
Explanation: Option A: Adding EC2 instances in another Availability Zone may provide additional capacity but it does not directly address rightsizing. It involves provisioning and managing additional instances, which can increase operational overhead.
Option B: Changing the size and type of EC2 instances based on utilization is the preferred approach for rightsizing. By analyzing the utilization metrics, the company can identify instances that are overprovisioned or underutilized. Downsizing or upsizing these instances to match the workload’s requirements can optimize costs and performance. This option minimizes operational overhead as it focuses on adjusting the existing instances instead of adding new ones.
Option C: Converting the payment method from On-Demand to Savings Plans is a cost optimization strategy but does not directly address rightsizing. It may provide cost savings over time, but it does not involve making changes to the EC2 instance configurations.
Option D: Reprovisioning EC2 instances with a larger instance type is not a rightsizing approach. It involves increasing the instance capacity, which may lead to overprovisioning and higher costs. Additionally, it requires migrating data and applications to the new instance type, which can introduce operational overhead.
In summary, changing the size and type of EC2 instances based on utilization (Option B) is the most efficient approach for rightsizing without incurring unnecessary operational overhead.
Explanation 7
The correct answer is B. Change the size and type of the EC2 instances based on utilization.
The reason is that changing the size and type of the EC2 instances based on utilization will allow the company to optimize its performance and cost efficiency by matching the instances to the workload requirements. This can be done with the least operational overhead by using AWS services such as AWS Auto Scaling, AWS Compute Optimizer, or AWS Trusted Advisor.
The other options are incorrect for the following reasons:
- A. Add EC2 instances in another Availability Zone. This option will not rightsize the EC2 instances, but rather increase the availability and redundancy of the application. Adding EC2 instances in another Availability Zone will also incur additional costs and complexity for network and data synchronization.
- C. Convert the payment method from On-Demand to Savings Plans. This option will not rightsize the EC2 instances, but rather change the billing model for the existing instances. Savings Plans offer a lower price than On-Demand in exchange for a commitment to use a certain amount of compute power over a period of time. However, this option does not affect the size or type of the EC2 instances.
- D. Reprovision the EC2 instances with a larger instance type. This option will not rightsize the EC2 instances, but rather oversize them. Reprovisioning the EC2 instances with a larger instance type will increase the performance and capacity of the application, but also increase the costs and waste resources. Moreover, this option will require more operational overhead to stop, resize, and restart the EC2 instances.
Explanation 8
The correct answer is B. Changing the size and type of the EC2 instances based on utilization will allow the company to rightsize its EC2 instances and optimize its costs and performance. This can be done with the least operational overhead by using AWS Auto Scaling, which automatically adjusts the number and type of EC2 instances in response to demand or custom metrics. AWS Auto Scaling can also help the company maintain high availability and fault tolerance by distributing the EC2 instances across multiple Availability Zones.
Option A is incorrect because adding EC2 instances in another Availability Zone will not rightsize the EC2 instances, but rather increase the capacity and redundancy of the application. This may incur additional costs and complexity without improving the utilization or performance of the EC2 instances.
Option C is incorrect because converting the payment method from On-Demand to Savings Plans will not rightsize the EC2 instances, but rather change the billing model for the EC2 usage. Savings Plans offer a lower price than On-Demand in exchange for a commitment to use a certain amount of compute power for a period of time. Savings Plans do not affect the configuration or scaling of the EC2 instances.
Option D is incorrect because reprovisioning the EC2 instances with a larger instance type will not rightsize the EC2 instances, but rather increase the size and cost of the EC2 instances. This may result in overprovisioning and underutilization of the EC2 resources, which is not optimal for cost and performance.
Explanation 9
The configuration change that will meet the requirement with the least operational overhead is option B. Changing the size and type of the EC2 instances based on utilization is the most efficient way to rightsize EC2 instances. This is because it is less expensive than adding more instances or reprovisioning instances with a larger instance type. It also requires less operational overhead than reprovisioning instances with a larger instance type.
Explanation 10
Answer: B. Change the size and type of the EC2 instances based on utilization.
Explanation: The option that will meet the company’s requirement of rightsizing Amazon EC2 instances with the least operational overhead is to change the size and type of the EC2 instances based on utilization (Option B).
Explanation:
- Rightsizing refers to optimizing the EC2 instance types to match the workload’s requirements and resource utilization. This ensures that the company is not overpaying for unused resources or underprovisioning for demanding workloads.
- Changing the instance size and type based on utilization involves monitoring the performance metrics of the EC2 instances and then resizing them to a different instance type that better matches the workload’s resource needs.
- This approach minimizes operational overhead as it doesn’t require setting up additional instances (Option A), changing payment methods (Option C), or reprovisioning instances with larger types (Option D).
- By using monitoring and auto-scaling features provided by AWS, the resizing process can be automated, reducing manual intervention and making the process efficient.
In summary, changing the size and type of EC2 instances based on utilization is the most efficient way to rightsize instances while minimizing operational overhead.
Explanation 11
To rightsize Amazon EC2 instances with the least operational overhead, you can change the size and type of the EC2 instances based on utilization. This option is the most cost-effective way to rightsize your instances. You can also use the rightsizing recommendations feature in Cost Explorer to identify cost-saving opportunities by downsizing or terminating instances in Amazon Elastic Compute Cloud (Amazon EC2).
Converting the payment method from On-Demand to Savings Plans (Option C) is not related to rightsizing EC2 instances. Savings Plans is a flexible pricing model that provides savings of up to 72% on Amazon EC2 and AWS Fargate usage in exchange for committing to a consistent amount of usage (measured in dollars per hour) for a 1- or 3-year term.
Adding EC2 instances in another Availability Zone (Option A) will not help you rightsize your instances. It will only add more instances which will increase your operational overhead.
Reprovisioning the EC2 instances with a larger instance type (Option D) is not the best option because it will increase your costs and may not be necessary if you can rightsize your instances based on utilization.
Explanation 12
The correct answer is B. Change the size and type of the EC2 instances based on utilization.
Explanation: Changing the size and type of the EC2 instances based on utilization is the best way to rightsize the instances with the least operational overhead. This can be done by using Amazon CloudWatch to monitor the utilization of the instances and then using the AWS Management Console or the AWS CLI to change the instance type. This will allow the company to rightsize the instances to meet their needs while minimizing the amount of operational overhead.
Option A is incorrect because adding EC2 instances in another Availability Zone will not rightsize the instances. It will only increase the number of instances that the company has to manage.
Option C is incorrect because converting the payment method from On-Demand to Savings Plans will not rightsize the instances. It will only change the way that the company pays for the instances.
Option D is incorrect because reprovisioning the EC2 instances with a larger instance type will not rightsize the instances. It will only increase the size of the instances, which could lead to higher costs.
Explanation 13
The correct answer is (B) Change the size and type of the EC2 instances based on utilization.
When a company wants to rightsize its Amazon EC2 instances, it means they want to optimize their instance usage to minimize unnecessary instances and reduce operational overhead. In this case, the best approach is to change the size and type of the EC2 instances based on their utilization.
Option (A) Add EC2 instances in another Availability Zone is incorrect because it does not address the issue of operational overhead. While adding instances in another Availability Zone can provide redundancy and better availability, it does not reduce operational overhead.
Option (C) Convert the payment method from On-Demand to Savings Plans is also incorrect because it does not directly address the issue of operational overhead. While Savings Plans can provide cost savings, it does not reduce the number of instances needed or the operational overhead associated with managing them.
Option (D) Reprovision the EC2 instances with a larger instance type is incorrect because it can lead to increased operational overhead due to the following reasons:
- Provisioning and setup time: Reprovisioning instances with larger instance types can take longer to provision and set up, which can lead to increased operational overhead.
- Performance impact: Changing the instance type can impact performance, especially if the new instance type has different hardware specifications or memory configurations. This can lead to additional operational overhead to optimize the instance configuration for the new type.
- Data migration: If the instances are provisioned with different instance types, there may be data migration issues to consider, which can lead to additional operational overhead.
In conclusion, the best option to meet the requirement of rightsizing Amazon EC2 instances with the least operational overhead is to change the size and type of the instances based on utilization. This approach can help reduce the number of unnecessary instances, optimize instance usage, and minimize operational overhead.
Explanation 14
To rightsize EC2 instances with the least operational overhead, the best option would be:
B. Change the size and type of the EC2 instances based on utilization.
Right-sizing your EC2 instances involves selecting the optimal instance type and size based on the workload requirements to optimize cost and performance. Changing the size and type of instances based on utilization involves monitoring and analyzing the usage of your instances, identifying underutilized or overutilized instances, and adjusting the instance types accordingly.
Option A, adding EC2 instances in another Availability Zone, may not necessarily reduce operational overhead as it may require additional setup and configuration, and may also result in higher costs due to the need for additional resources and bandwidth.
Option C, converting the payment method from On-Demand to Savings Plans, may not directly impact operational overhead but can help reduce costs. However, it may require some planning and analysis to ensure that the Savings Plans align with the workload requirements and usage patterns.
Option D, reprovisioning the EC2 instances with a larger instance type, may result in higher operational overhead due to the need to migrate data, reconfigure the instances, and potentially reimage the instances. This option may also result in higher costs if the larger instance type is more expensive than the current instance type.
Therefore, the most efficient approach to rightsize EC2 instances with the least operational overhead would be to change the size and type of instances based on utilization. This approach allows for flexible and dynamic scaling based on the actual workload requirements, without the need for significant operational overhead or additional infrastructure costs.
Explanation 15
B. Change the size and type of the EC2 instances based on utilization.
This option has the least operational overhead because it does not require any changes to the existing instances or their configurations, and it does not require any downtime or maintenance windows.
When you change the size and type of EC2 instances based on utilization, you can automatically adjust the computing resources of your instances to match the current workload, without having to manually adjust the instance type or size. This can help you optimize your resource utilization and reduce costs.
Additionally, AWS provides a service called Auto Scaling that can automatically adjust the number of instances in your fleet based on certain conditions, such as the average CPU utilization or custom metrics. This can help you maintain the optimal number of instances running at any given time, which can further reduce costs and improve efficiency.
The other options are not the best choices for right-sizing EC2 instances because:
A. Adding EC2 instances in another Availability Zone would require additional infrastructure and networking setup, which would increase operational overhead.
C. Converting the payment method from On-Demand to Savings Plans would not impact the instance type or size, and would only affect the billing and pricing of the instances.
D. Reprovisioning the EC2 instances with a larger instance type would require downtime and maintenance windows, as the instances would need to be stopped, updated, and started again. This would result in a higher operational overhead compared to option B.
Explanation 16
The correct answer is B. Change the size and type of the EC2 instances based on utilization.
Explanation:
Rightsizing EC2 instances involves optimizing the instance type and size based on actual utilization to achieve better performance and cost efficiency. This approach allows the company to match the resource requirements of their applications more accurately, avoiding underutilization or overprovisioning.
Option A, adding EC2 instances in another Availability Zone, does not directly address rightsizing. It simply increases the number of instances without considering their size or utilization, which could potentially lead to further inefficiencies.
Option C, converting the payment method from On-Demand to Savings Plans, is a billing and cost optimization strategy. While it can help reduce costs, it does not address rightsizing directly. Savings Plans provide discounted pricing for a specific commitment, but they don’t optimize the performance of the instances.
Option D, reprovisioning the EC2 instances with a larger instance type, may result in increased operational overhead. It involves migrating the applications, data, and configurations to new instances, which can be time-consuming and potentially disruptive.
On the other hand, option B directly addresses rightsizing by evaluating the utilization of the current EC2 instances and making appropriate changes to their size and type. By analyzing performance metrics and resource utilization, the company can identify instances that are over or underutilized. They can then resize or change the instance type accordingly to match the workload requirements more efficiently. This approach minimizes operational overhead and ensures optimal resource allocation.
In summary, option B, changing the size and type of the EC2 instances based on utilization, is the most suitable choice for rightsizing with the least operational overhead.
Explanation 17
Here is my answer with detailed explanation:
The best option to rightsize EC2 instances with the least operational overhead is B – Change the size and type of the EC2 instances based on utilization.
Rightsizing refers to optimizing the EC2 instance types and sizes based on the actual resource utilization of the instances. This ensures the instances are not overprovisioned or underprovisioned.
Option A of adding instances in another AZ does not change the instance types/sizes, it only adds more instances of the same type. This does not optimize the existing instances and has overhead of configuring Networking and Security across AZs.
Option C of changing the payment method from On-Demand to Savings Plans also does not change the instance specifications. It only impacts billing but not optimization.
Option D of reprovisioning to a larger instance type may not be optimal if the current instances are underutilized. It will lead to overprovisioning and wasted costs.
Only option B of changing instance types/sizes based on utilization metrics like CPU, memory, storage usage will rightsize the instances optimally without overprovisioning. It has least operational overhead as well as it does not require reconfiguring networking or expanding to new AZs.
The key to rightsizing is identifying the correct instance types to match the application workload through utilization analysis. Option B achieves this optimization goal with minimal operational changes, making it the best answer.
Explanation 18
Here is the detailed answer for the question:
The company wants to rightsize its EC2 instances, which means adjusting the instances’ configurations to better match the current resource utilization and needs.
Among the options, changing the size and type of EC2 instances based on utilization (Option B) would meet this goal of rightsizing with the least operational overhead. Resizing the instances to more accurately reflect current usage allows the company to optimize costs without having to provision entirely new instances.
Adding instances to another AZ (Option A) does not resize existing instances, so it does not directly address rightsizing. Converting to Savings Plans (Option C) changes billing but not instance specs. Reprovisioning to a larger type (Option D) could increase overhead by requiring migration of data/software versus a simpler resize.
In summary, observing current utilization levels and adjusting instance sizes/types accordingly (Option B) is the most optimized approach that directly meets the goal of rightsizing with minimal overhead, such as avoiding full replacement of instances. The other options do not as directly fulfill the requirement of rightsizing or would incur comparatively more operational steps. Therefore, the best answer is Option B.
Explanation 19
The configuration change that will meet the company’s requirement of rightsizing its Amazon EC2 instances with the least operational overhead is option B: “Change the size and type of the EC2 instances based on utilization.”
Explanation:
Rightsizing refers to adjusting the size and type of your EC2 instances to match the workload needs more efficiently. It helps optimize costs and performance by ensuring that you are not over-provisioning or under-provisioning resources.
Option A: “Add EC2 instances in another Availability Zone” does not directly address rightsizing. It suggests adding more instances in a different Availability Zone, which may increase costs and complexity without necessarily optimizing resource allocation.
Option C: “Convert the payment method from On-Demand to Savings Plans” is related to cost optimization but not specifically to rightsizing. Savings Plans provide discounted pricing for EC2 usage but do not directly address the size and type of instances.
Option D: “Reprovision the EC2 instances with a larger instance type” implies increasing the size of the instances. While this may be necessary in some cases, it does not guarantee rightsizing. In fact, it may result in over-provisioning resources, leading to higher costs.
Option B, changing the size and type of the EC2 instances based on utilization, is the most appropriate choice for rightsizing. By monitoring the utilization metrics of your instances, such as CPU and memory usage, you can determine the appropriate instance size and type that meets the workload requirements. This approach ensures that you allocate resources efficiently, avoid underutilization or overutilization, and optimize costs without introducing unnecessary operational overhead.
In summary, the most suitable configuration change for rightsizing EC2 instances with the least operational overhead is to change the size and type of the instances based on utilization (option B).
Explanation 20
The correct answer is C. Convert the payment method from On-Demand to Savings Plans.
A brief explanation is as follows:
- Rightsizing is the process of matching instance types and sizes to your workload performance and capacity requirements at the lowest possible cost. It involves analyzing instance utilization and identifying opportunities to eliminate or downsize instances without compromising capacity or performance.
- Option A is incorrect because adding EC2 instances in another Availability Zone does not rightsize the existing instances, but rather increases the number of instances and the operational overhead. It may also incur additional costs for data transfer across Availability Zones.
- Option B is incorrect because changing the size and type of the EC2 instances based on utilization requires monitoring, analysis, and manual or automated adjustments of the instances. This can be a complex and time-consuming process that involves operational overhead.
- Option C is correct because converting the payment method from On-Demand to Savings Plans does not require any configuration changes to the EC2 instances, but rather offers a lower price for a consistent amount of usage. Savings Plans are flexible and can apply to any instance family, size, OS, tenancy, or region. This can reduce the cost of EC2 instances without affecting their performance or capacity.
- Option D is incorrect because reprovisioning the EC2 instances with a larger instance type does not rightsize the instances, but rather increases their size and cost. It may also result in overprovisioning and waste of resources.
Explanation 21
The option that will meet the requirement of rightsizing Amazon EC2 instances with the least operational overhead is C. Convert the payment method from On-Demand to Savings Plans.
Switching from On-Demand to Savings Plans allows companies to commit to a consistent amount of usage, resulting in cost savings. Savings Plans provide a discounted rate for EC2 usage in exchange for a commitment to a specific hourly usage amount, known as a commitment.
By converting the payment method to Savings Plans, a company can optimize costs without the need for additional operational overhead such as adding more EC2 instances in another Availability Zone (Option A) or reprovisioning EC2 instances with a larger instance type (Option D).
Changing the size and type of the EC2 instances based on utilization (Option B) may also help optimize costs, but it could require more operational overhead due to monitoring and analyzing the utilization and making frequent changes. Converting to Savings Plans offers a more straightforward and consistent approach to cost optimization.
Reference
- Optimizing your cost with Rightsizing Recommendations – AWS Cost Management (amazon.com)
- Tips for Right Sizing – Right Sizing: Provisioning Instances to Match Workloads (amazon.com)
- Right Sizing (amazon.com)
- Identifying Opportunities to Right Size – Right Sizing: Provisioning Instances to Match Workloads (amazon.com)
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