Section-Based – Cost and Performance Optimization (SysOps)

A government organization has implemented a file gateway to keep copies of the home drives of their employees in a separate S3 bucket. As the SysOps Administrator, you noticed that most files are rarely accessed after 60 days but it is required that the files should still be available immediately in the event of a surprise audit.

In this scenario, what can you do to reduce the storage costs while continuing to provide access to the files for the employees?

A known security vulnerability was discovered in the outdated Operating System of your company’s EC2 fleet. As the Systems Administrator, you are responsible in mitigating the vulnerability as soon as possible to safeguard your systems from various cyber security attacks.

What is the most efficient way to solve this issue?

A startup hosts its web application on a large Spot Fleet that uses tens of Amazon EC2 instances with diversified instance families across multiple Availability Zones. The application is primarily used for integration testing by a group of external customers for their staging environments. The Chief Information Officer(CIO) requires that the Spot Fleet is cost-optimized and less susceptible to application downtime due to Spot instance interruptions.

Which of the following should the SysOps Administrator implement to adhere to the CIO requirements?

A company is setting up a static website in AWS which is written in Angular that allows users to calculate their net worth. The SysOps Administrator uploaded the website’s HTML, JavaScript, CSS, and other media files to an S3 bucket and then enabled static website hosting. After a month, the website became a hit globally with over a million users using the site every month. However, there are some complaints about the site loading very slowly in some countries.

Which of the following options would the SysOps Administrator use to fix this performance issue?

A SysOps Administrator launched an EBS-backed On-Demand EC2 Instance to host a web application. However, the instance always terminates after going into the pending state.

Which of the following could be the cause of this issue? (Select TWO.)

A global news website is deployed in AWS which uses an Application Load Balancer, an Auto Scaling group of On-Demand EC2 instances, and an RDS MySQL Database. Lately, there are a lot of readers that are complaining about the slow loading of the articles in the website. As the Systems Administrator of the company, you analyzed the current architecture and you found that there is a high number of read operations in the database which affects the website’s performance.

Which of the following options would you consider to resolve the issue in a cost-effective manner?

A merchandising company utilizes Amazon Elasticache for Redis to boost the performance of its inventory management application. The Elasticache for Redis cluster includes two extra-large nodes distributed across two Availability Zones. The company’s SysOps team monitored the metrics for the cluster and found that it still has 80% freeable memory.

What is the MOST cost-effective approach to resize the cluster while maintaining high availability for the application?

A finance organization is running an application on its on-premises data center but needs to use AWS for backing up its data. The manager requires that the backup data is made available locally to comply with regulatory requirements. The backup software can only write to block-based storage compatible with Portable Operating System Interface (POSIX).

Which backup solution will help the SysOps admin meet the requirements?

A SysOps Administrator needs to implement a highly available and scalable cloud architecture in AWS for the new online remittance system of the organization. The Administrator set up an Application Load Balancer and launched an Auto Scaling group of Spot EC2 instances on their UAT VPC. The QA team conducted performance testing on the new system and found out a defect in the application server. The Administrator wants to investigate the problem and make the necessary changes without invoking the scaling down processes, which is why the Administrator temporarily suspended the Terminate scaling process.

What will be its effect on the Auto Scaling group’s Availability Zone rebalancing process (AZRebalance) during this period?

A leading insurance firm has a VPC in the US East (N. Virginia) region for their head office in New York and another VPC in the US West (N. California) for their regional office in California. There is a requirement to establish a low latency, high-bandwidth connection between their on-premises data center in Chicago and both of their VPCs in AWS.

As the SysOps Administrator of the firm, how could you implement this in a cost-effective manner?

An IT Consulting company has three separate AWS accounts in different regions with one VPC on each account. The manager instructed you to connect the three VPCs to each other and reminded you that these VPCs have no overlapping IPv4 or IPv6 CIDR blocks.

Which of the following is the most cost-effective connectivity option for this scenario?

A large technology company owns several IT Consulting firms and has individual AWS accounts. As the SysOps Administrator, you are responsible for setting up their cloud architecture, ensuring that they are able to centrally manage policies and billing for their multiple AWS accounts.

Which of the following options would you implement to satisfy this requirement?

A NodeJS application uses an S3 bucket to store user-generated data. The bucket policy should always be monitored to secure the data of the users and verify that the files are not publicly accessible over the Internet. You are also tasked to automate the assessment of your resource configurations and resource changes to ensure continuous compliance and self-governance across your AWS infrastructure.

Which of the following is the best approach to satisfy this requirement?

A RegTech startup plans to utilize machine learning to improve its financial regulatory processes. They have a fleet of Spot EC2 instances with an Application Load Balancer to host their online customer portal. There is a requirement to produce a report that provides a list of IP addresses that are accessing their portal, including the API request logs that went through all of their AWS resources.

Which of the following options could help the SysOps Administrator achieve this requirement? (Select TWO.)

A popular sports website, which provides news, opinions, and videos on various sports events around the world, is hosted in AWS. The website’s architecture has an Auto Scaling group of On-Demand EC2 instances across multiple Availability Zones with an Application Load Balancer (ALB) to evenly distribute the incoming traffic. Lately, online readers have been giving the site a low rating because of the slow loading time of their site. Due to the upcoming FIFA World cup competition, it is expected that the traffic will continue to surge in the coming weeks ahead.

Which of the following services can be used as a cost-effective solution to scale and improve the site’s loading time?

A SysOps Administrator is monitoring and handling groups of Amazon EC2 instances using AWS Systems Manager. Whenever there are batch operations such as maintenance and OS patching on these instances, the Administrator can rely on the Systems Manager to automatically perform these activities.

What other tasks can the Administrator perform with automation in Systems Manager? (Select TWO.)

A company has numerous AWS accounts and is managed using AWS Organizations. The finance department has requested a monthly breakdown of cloud expenditures for each department. AWS Systems Manager OpsCenter is used as a centralized location to manage operational work items of the corporate AWS resources across AWS accounts.

What sequence of actions should the SysOps Administrator take in order to supply the required information? (Select TWO.)

A leading insurance firm has a customer portal that is hosted on a fleet of Spot EC2 instances which are part of an Auto Scaling Group. The application is being used quite extensively during office hours from 8 in the morning till 4 in the afternoon. Users are complaining that the performance of the application is slow during the start of the day after which the application works properly.

Which of the following can be done to ensure that the application works properly at the beginning of the day?

A supply chain application is hosted on a large EC2 instance with multiple SSD-backed, General Purpose-type EBS volumes. The instance contains an entire set of logistics data with a total of over 10 TB. You have to increase the IOPS of the volume to improve its performance.

Which of the following options can help you accomplish this? (Select TWO.)

A SysOps Administrator is maintaining a fleet of EC2 instances in Amazon VPC which are used to host several business applications. The Administrator noticed that CPU credits for some burstable instances are dropping to zero during peak processing times.

Which of the following can solve this issue? (Select TWO.)

A SysOps Administrator has been instructed to migrate an application from their on-premises data center to AWS. The architecture should be highly available and secure against common web exploits such as cross-site scripting, SQL injection and brute-force HTTP flood attacks.

Which combination of steps should the administrator implement in order to meet the above requirement? (Select TWO.)

A digital advertising company has a large MySQL RDS database which is being heavily used by their suite of data analytics applications. Lately, there are a lot of performance issues happening on your applications in production and after further investigation, it was discovered that the database could not handle the high volume of incoming read requests.

Which of the following options can be done to alleviate the performance issue of the database? (Select TWO.)

An application is hosted in an Auto Scaling group of t2.small EC2 instances in your VPC. You noticed that when the workload goes up, the EC2 instances experience networking issues that affect the entire application. Which of the following can you do to resolve the issue?

A financial services company, which has a hybrid cloud architecture, has hired you to manage their on-premises and cloud infrastructure. As part of their disaster and recovery plan, you should set up a durable backup and archiving system for their corporate documents stored on both on-premises and on their cloud storage. These documents should be immediately accessible within minutes for 6 months and be available for another 10 years to meet the data compliance.

Which of the following is the best and most cost-effective approach to implement for this scenario?

An accounting company has recently adopted a hybrid cloud infrastructure and they instructed you to set up a system to store each of their employee’s work files in an S3 bucket. You noticed that all documents, which are created after 3 months, are no longer accessed by the users.

As the company’s Systems Administrator, which of the following is the most suitable way to reduce the storage costs while still providing users access to the files?

A company has multiple AWS accounts which are consolidated with AWS Organizations. You are instructed to ensure that the tags are consistently applied when your resources are created in AWS across all accounts.

Which of the following options should you do to satisfy this requirement? (Select TWO.)

A startup is preparing to deploy its application on various instance types of Amazon EC2. However, during the initial testing phase, a SysOps Administrator encounters performance issues with specific EC2 instances. Due to budget limitations, the SysOps Administrator must carefully choose resource types that align with the required performance characteristics for the workload.

How can the SysOps Administrator fulfill this requirement?

A mobile development company has various AWS resources to support its various mobile products. To keep control of costs, they have requested for you to get the billing alerts for your AWS account once it reaches a certain limit. Which of the following should you enable before you can receive billing alerts in AWS?

A digital advertising company has a set of S3 buckets that contains various data such as Ad clickthrough rate (CTR), Cost Per Click (CPC) and many others. The analytics management team needs to analyze the data hosted in the S3 bucket using standard SQL to produce reports.

Which of the following AWS services can help meet their demand?