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Amazon SAA-C03 (Amazon AWS Certified Solutions Architect - Associate (SAA-C03)) Exam is a certification exam designed for professionals who want to validate their expertise in designing and deploying scalable, highly available, and fault-tolerant systems on the Amazon Web Services (AWS) platform. SAA-C03 Exam Tests the candidate's knowledge and skills in various AWS services, including compute, storage, networking, security, database, and application services. The SAA-C03 exam is an updated version of the previous SAA-C02 exam, which includes the latest AWS services and best practices.
NEW QUESTION # 917
[Design High-Performing Architectures]
A company has a mobile game that reads most of its metadata from an Amazon RDS DB instance. As the game increased in popularity, developers noticed slowdowns related to the game's metadata load times Performance metrics indicate that simply scaling the database will not help A solutions architect must explore all options that include capabilities for snapshots, replication, and sub-millisecond response times What should the solutions architect recommend to solve these issues'?
Answer: B
Explanation:
This option is the most suitable way to improve the game's metadata load times without migrating the database. Amazon ElastiCache for Redis is a fully managed, in-memory data store that provides sub-millisecond latency and high throughput for read-intensive workloads. You can use it as a caching layer in front of your RDS DB instance to store frequently accessed metadata and reduce the load on thedatabase. You can also take advantage of Redis features such as snapshots, replication, and data persistence to ensure data durability and availability. ElastiCache for Redis scales automatically to meet your demand and integrates with other AWS services such as CloudFormation, CloudWatch, and IAM.
Option A is not optimal because migrating the database to Amazon Aurora with Aurora Replicas would incur additional costs and complexity. Amazon Aurora is a relational database service that provides high performance, availability, and compatibility with MySQL and PostgreSQL. Aurora Replicas are read-only copies of the primary database that can be used for scaling read capacity and enhancing availability. However, migrating the database to Aurora would require modifying the application code, testing the compatibility, and performing the data migration. Moreover, Aurora Replicas may not provide sub-millisecond response times as ElastiCache for Redis does.
Option B is not optimal because migrating the database to Amazon DynamoDB with global tables would incur additional costs and complexity. Amazon DynamoDB is a NoSQL database service that provides fast and flexible data access for any scale. Global tables are a feature of DynamoDB that enables you to replicate your data across multiple AWS Regions for high availability and performance. However, migrating the database to DynamoDB would require changing the data model, modifying the application code, and performing the data migration. Moreover, global tables may not be necessary for the game's metadata, as they are mainly used for cross-region data access and disaster recovery.
Option D is not optimal because adding an Amazon ElastiCache for Memcached layer in front of the database would not provide the same capabilities as ElastiCache for Redis. Amazon ElastiCache for Memcached is another fully managed, in-memory data store that provides high performance and scalability for caching workloads. However, Memcached does not support snapshots, replication, or data persistence, which means that the cached data may be lost in case of a node failure or a cache eviction. Moreover, Memcached does not integrate with other AWS services as well as Redis does. Therefore, ElastiCache for Redis is a better choice for this scenario. Reference:
What Is Amazon ElastiCache for Redis?
What Is Amazon Aurora?
What Is Amazon DynamoDB?
What Is Amazon ElastiCache for Memcached?
NEW QUESTION # 918
A company has a mobile chat application with a data store based in Amazon uynamoUb. users would like new messages to be read with as little latency as possible A solutions architect needs to design an optimal solution that requires minimal application changes.
Which method should the solutions architect select?
Answer: B
Explanation:
https://aws.amazon.com/premiumsupport/knowledge-center/dynamodb-high-latency/ Amazon DynamoDB Accelerator (DAX) is a fully managed in-memory cache for DynamoDB that improves the performance of DynamoDB tables by up to 10 times and provides microsecond level of response time at any scale. It is compatible with DynamoDB API operations and requires minimal code changes to use1. By configuring DAX for the new messages table, the solution can reduce the latency for reading new messages with minimal application changes.
b) Add DynamoDB read repticas to handle the increased read load. Update the application to point to the read endpoint for the read replicas. This solution will not work, as DynamoDB does not support read replicas as a feature. Read replicas are available for Amazon RDS, not for DynamoDB2.
c) Double the number of read capacity units for the new messages table in DynamoDB. Continue to use the existing DynamoDB endpoint. This solution will not meet the requirement of reading new messages with as little latency as possible, as increasing the read capacity units will only increase the throughput of DynamoDB, not the performance or latency3.
d) Add an Amazon ElastiCache for Redis cache to the application stack. Update the application to point to the Redis cache endpoint instead of DynamoDB. This solution will not meet the requirement of minimal application changes, as adding ElastiCache for Redis will require significant code changes to implement caching logic, such as querying cache first, updating cache after writing to DynamoDB, and invalidating cache when needed.
Reference URL: https://aws.amazon.com/dynamodb/dax/
NEW QUESTION # 919
A solutions architect is designing a web application that will run on Amazon EC2 instances behind an Application Load Balancer (ALB). The company strictly requires that the application be resilient against malicious internet activity and attacks, and protect against new common vulnerabilities and exposures.
What should the solutions architect recommend?
Answer: B
Explanation:
AWS WAF allows web applications to protect themselves from common web exploits and vulnerabilities. Using AWS managed rule groups ensures protection against known attack patterns, such as SQL injection and cross-site scripting. Associating AWS WAF with the ALB provides application-layer security and real-time threat mitigation.
NEW QUESTION # 920
A finance company uses backup software to back up its data to physical tape storage on-premises. To comply with regulations, the company needs to store the data for 7 years. The company must be able to restore archived data within one week when necessary.
The company wants to migrate the backup data to AWS to reduce costs. The company does not want to change the current backup software.
Which solution will meet these requirements MOST cost-effectively?
Answer: B
Explanation:
AWS Storage Gateway Tape Gateway provides a seamless way to migrate backup data to AWS without requiring changes to the backup software. Migrating to S3 Glacier Deep Archive ensures long-term, cost-effective storage for data that rarely needs retrieval.
Option A:S3 Standard-IA is more expensive than Glacier for long-term storage.
Option B and D:Glacier Flexible Retrieval is costlier than Glacier Deep Archive for archival use cases with low retrieval frequency.
AWS Documentation Reference:
AWS Storage Gateway Tape Gateway
S3 Glacier Storage Classes
NEW QUESTION # 921
A financial company is migrating banking applications to AWS accounts managed through AWS Organizations. The applications store sensitive customer data on Amazon EBS volumes, and the company takes regular snapshots for backups.
The company must implement controls across all accounts to prevent sharing EBS snapshots publicly, with the least operational overhead.
Which solution will meet these requirements?
Answer: C
Explanation:
AWS provides EBS Block Public Access at the organization level in AWS Organizations. When enabled, it prevents any EBS snapshot-across all member accounts-from being shared publicly.
This is an organization-wide control implemented centrally, with no need for per-account configuration, monitoring rules, or custom IAM policy enforcement.
AWS Config (Option A) would only detect issues after they occur. IAM restrictions (Option C) are less effective because snapshot permission changes can occur through multiple paths. CloudTrail (Option D) only logs events and does not block public sharing.
NEW QUESTION # 922
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