SAP-C02 Accelerate Workload Migration and Modernization Practice Test 20 — 15 Questions

Question 1

A company is migrating a .NET application from Windows Server to Linux on EC2. The application uses a proprietary COM+ component that cannot be recompiled. Which migration path should they take?

Accepted Answer

Rehost the application on Windows Server EC2 instances. Since the COM+ component cannot be recompiled and is Windows-specific, the only viable option is to remain on Windows using EC2 (Rehost). Option A (Replatform to .NET Core on Linux) is impossible because COM+ does not run on Linux. Option B (Refactor the component) violates the constraint. Option D (Rehost using Linux) is invalid.

Answer

Rehost the application on Linux EC2 using Wine

Answer

Refactor the COM+ component to a REST API

Answer

Replatform the application to .NET Core and run on Linux

Question 2

A company is migrating a legacy application that uses a proprietary binary protocol over TCP. They want to modernize to a containerized microservices architecture on Amazon EKS. The protocol must be preserved for backward compatibility. Which approach should they take?

Accepted Answer

Deploy a sidecar proxy container in the same pod to translate the protocol. A sidecar proxy running on the same pod as the legacy container can handle the proprietary protocol and translate it to HTTP for other microservices. Option A (Network Load Balancer) cannot translate protocols. Option B (API Gateway) requires HTTP. Option D (Refactor the protocol) is too risky and time-consuming.

Answer

Use Amazon API Gateway to expose the legacy service as a REST API

Answer

Refactor the legacy application to use HTTP

Answer

Use a Network Load Balancer to route TCP traffic to the legacy container

Question 3

A company is migrating 50 TB of data from on-premises to Amazon S3 over a 100 Mbps internet connection. The migration must complete within 30 days. What should they do?

Accepted Answer

Use AWS Snowball Edge devices. At 100 Mbps, transferring 50 TB would take approximately 48 days (50 TB * 1024 GB/TB * 1024 MB/GB * 8 bits/byte / (100 Mbps) / 86400 sec/day ≈ 48 days), exceeding the 30-day window. AWS Snowball Edge can transfer data faster via physical shipment. Option A (increase bandwidth) may not be feasible. Option C (S3 Transfer Acceleration) still uses internet. Option D (AWS DataSync) also uses network.

Answer

Use AWS DataSync to transfer data

Answer

Use AWS Direct Connect to increase bandwidth

Answer

Use S3 Transfer Acceleration

Question 4

A company wants to modernize a batch processing application that runs on EC2 instances using a cron job. The job processes files from an S3 bucket and takes about 2 hours. They want to reduce operational overhead. Which service should they use?

Accepted Answer

AWS Batch. AWS Batch is designed for batch computing and can automatically provision EC2 instances, run the job, and terminate them, reducing overhead. Option A (Lambda) has a 15-minute timeout. Option B (Step Functions) orchestrates but does not run the compute. Option D (ECS with Fargate) is possible but requires more configuration than AWS Batch for batch jobs.

Answer

Amazon ECS with Fargate

Answer

AWS Lambda

Answer

AWS Step Functions

Question 5

During an on-premises to AWS migration using AWS MGN (Application Migration Service), the replication is stuck at 99% for the last few GB. The source server is a Linux database server with a large InnoDB redo log. What is the most likely cause?

Accepted Answer

Continuous writes to the database redo logs preventing final sync. AWS MGN uses changed block tracking (CBT) to replicate changed blocks. Large InnoDB redo logs are continuously written, causing constant changes and preventing final sync. Option A (network bandwidth) would affect all stages. Option B (disk I/O) might slow down but not stall. Option D (source server reboot) might reset replication but not cause a stall at 99%.

Answer

High disk I/O on the source server

Answer

The source server needs reboot after MGN agent installation

Answer

Insufficient network bandwidth between source and AWS

Question 6

A company is migrating a stateful application that uses local storage on EC2. They want to modernize to a stateless architecture using Amazon EFS for shared storage. What is the best approach to migrate the existing data?

Accepted Answer

Copy data from local storage to EFS using AWS DataSync during a maintenance window. The recommended approach is to copy data from local storage to EFS using AWS DataSync or rsync during a maintenance window, then reconfigure the application to use EFS. Option A (attach the local volume to the new instance) is not stateless. Option B (use S3 with Fsx) is overcomplicated. Option D (use EBS snapshots) retains statefulness.

Answer

Use AWS Fsx for Lustre with S3 as data repository

Answer

Detach the EBS volume and attach it to the new EC2 instance

Answer

Create an EBS snapshot and restore it on the new instance

Question 7

A company is migrating its on-premises VMware VMs to AWS using AWS MGN. They need to ensure that the migration minimizes downtime and automates cutover. Which TWO steps are required? (Select TWO.)

Accepted Answer

Launch a test instance to validate the migration before cutover. AWS MGN requires installing the MGN agent on each source VM (B) and then launching a test instance to verify the migration before cutover (C). Option A (AWS SMS) is a different service. Option D (AWS DMS) is for databases. Option E (AWS CloudEndure Migration) is the former name of MGN, but the question asks for steps within MGN, and test launch is a required step.

Answer

Use AWS Server Migration Service (SMS) to replicate the VMs

Answer

Use AWS CloudEndure Migration to configure the replication

Answer

Use AWS DMS to migrate the data from the VMs

Question 8

A company is modernizing a legacy CRM application to a microservices architecture on AWS. They want to use AWS Lambda for compute and Amazon API Gateway for the API layer. Which THREE design patterns should they consider? (Select THREE.)

Accepted Answer

Decompose the monolith into separate Lambda functions for each business capability. The three key patterns for serverless microservices are: use API Gateway as the entry point for REST APIs (A), decompose the monolith into separate Lambda functions per business capability (B), and use AWS Step Functions for orchestration (C). Option D (EC2 Auto Scaling) is not serverless. Option E (ElastiCache) is for caching but not a core pattern.

Answer

Use Amazon ElastiCache for session state management

Answer

Use EC2 Auto Scaling groups for each microservice

Question 9

A company is migrating a large-scale e-commerce platform to AWS. The platform uses a MySQL database with a 2 TB dataset. They want to modernize to Amazon Aurora MySQL with minimal downtime. Which THREE steps should they take? (Select THREE.)

Accepted Answer

Use AWS Schema Conversion Tool (SCT) to convert the existing schema to Aurora MySQL. The migration to Aurora MySQL with minimal downtime involves: using AWS SCT to convert the schema (A), using AWS DMS for ongoing replication with CDC (B), and setting up a read replica from the source to reduce load (C). Option D (DynamoDB) is a different database. Option E (RDS for MySQL) does not modernize to Aurora.

Answer

Use Amazon RDS for MySQL instead of Aurora

Answer

Migrate the database to Amazon DynamoDB

Question 10

A company is migrating a legacy on-premises application to AWS. The application currently runs on a Windows Server with a SQL Server database. The company wants to minimize changes to the application code. Which migration strategy should the company use?

Accepted Answer

Rehost (lift-and-shift). Rehosting (lift-and-shift) involves moving the application as-is to AWS, minimizing code changes. Replatforming (lift-and-resize) may involve some changes, but rehosting requires the least modification. Refactoring and rebuilding involve significant changes.

Answer

Refactor / re-architect

Answer

Replatform (lift-and-resize)

Answer

Rebuild

Question 11

A company is migrating a large-scale e-commerce platform from on-premises to AWS. The migration plan includes rehosting the application servers and replatforming the database to Amazon Aurora. The company needs to ensure minimal downtime during the cutover. Which strategy should the company use for the database migration?

Accepted Answer

Use AWS DMS with a full load and ongoing replication to keep the target synchronized. AWS Database Migration Service (DMS) with ongoing replication allows continuous data sync, enabling a cutover with minimal downtime. Using a snapshot backup requires downtime for restoration. AWS DMS with full load only does not keep the target up-to-date. Using an application-level dual-write is complex and error-prone.

Answer

Use AWS DMS with a full load only, then cut over

Answer

Use an application-level dual-write to both databases during the cutover

Answer

Take a snapshot of the on-premises database and restore it to Amazon Aurora

Question 12

A company is planning to migrate a 50 TB Oracle database to Amazon Aurora PostgreSQL. The company requires minimal downtime and wants to use AWS DMS for the migration. The source database is currently running on a dedicated server with high transaction volume. The network bandwidth between on-premises and AWS is 1 Gbps. What additional step should the company take to accelerate the migration and reduce downtime?

Accepted Answer

Use AWS Snowball to transfer an initial full load of the database to Amazon S3, then use AWS DMS for ongoing replication. Using AWS DMS with multiple parallel tasks and CDC can accelerate the migration. Reducing the data size by archiving old data before migration reduces the initial load. Increasing bandwidth may help but is not always feasible. Using Snowball for initial load bypasses network limitations for large datasets.

Answer

Migrate the database in smaller batches by moving individual schemas sequentially

Answer

Use AWS DMS with a single task and disable validation to speed up the process

Answer

Increase the network bandwidth to 10 Gbps for the duration of the migration

Question 13

A company is migrating its data warehouse from on-premises to Amazon Redshift. The current on-premises data warehouse runs on a proprietary MPP system. The company wants to minimize downtime and ensure data consistency. The company has a large volume of historical data (30 TB) and daily incremental updates of 10 GB. Which migration approach should the company use?

Accepted Answer

Use AWS Snowball to transfer the historical data to Amazon S3, then use AWS DMS with ongoing CDC to replicate incremental changes until cutover. Using AWS DMS with CDC for incremental data allows zero-downtime migration by keeping the target in sync. A bulk export/import approach requires downtime for the final load. Using Snowball for historical data and DMS for incremental updates is efficient for large datasets.

Answer

Use an ETL tool to extract data from the source and load directly into Amazon Redshift during a maintenance window

Answer

Perform a full export of the on-premises database to flat files, transfer them over the network, and load into Amazon Redshift

Answer

Use AWS DMS with full load only, then schedule a downtime window for the final sync

Question 14

A company is modernizing a monolithic application by decomposing it into microservices. The application currently uses a single MySQL database. The company wants to use a polyglot persistence approach, with different microservices using the most appropriate database type. The team has limited experience with NoSQL databases. Which strategy should the team use to minimize risk during the migration?

Accepted Answer

Use the strangler fig pattern to incrementally replace parts of the monolith with microservices, starting with a non-critical function. Using the strangler fig pattern allows incremental migration, replacing parts of the monolith with microservices one at a time. This reduces risk because each microservice can be tested independently. Starting with a non-critical service provides learning opportunity without high impact.

Answer

Rewrite the entire application as microservices using a new database for each service from the start

Answer

Migrate the entire monolith to a containerized application on Amazon ECS in one go

Answer

Use AWS DMS to replicate the monolith's database to multiple target databases simultaneously

Question 15

A company wants to migrate its on-premises virtualized workloads to AWS using the VMware Cloud on AWS service. The company currently uses VMware vSphere for virtualization. What is the primary benefit of using VMware Cloud on AWS for this migration?

Accepted Answer

It allows the company to continue using existing VMware management tools and processes. VMware Cloud on AWS allows organizations to use the same VMware tools and processes, minimizing the learning curve and operational changes. It does not automatically reduce costs, nor does it provide better performance or eliminate the need to refactor applications.

Answer

It provides better application performance compared to running on AWS native compute

Answer

It reduces the total cost of ownership by eliminating the need for any hardware maintenance

Answer

It eliminates the need to refactor applications for the cloud