PAS-C01 Migration — Timed 25 Questions

Question 1

A company is migrating a 50 TB Oracle database to Amazon RDS for Oracle using AWS DMS. The source database is running on-premises and the network link has a bandwidth of 100 Mbps. The migration must complete within 5 days. What is the MOST effective approach to meet the deadline?

25 minute time limit — choose an answer to begin.

Accepted Answer

Use AWS Snowball to transfer the data offline, then use DMS for CDC. The 50 TB database over a 100 Mbps link would take approximately 48 days for a full load (50 TB * 8 / 100 Mbps / 86400 seconds/day), far exceeding the 5-day deadline. AWS Snowball allows offline transfer of the full database snapshot, bypassing network bandwidth constraints, after which AWS DMS can be used for ongoing change data capture (CDC) to replicate incremental changes. This hybrid approach meets the deadline while ensuring minimal data loss.

Answer

Provision a Direct Connect connection to increase bandwidth

Answer

Use AWS DMS with full load and change data capture (CDC) online

Answer

Use AWS Schema Conversion Tool (SCT) to convert schema, then DMS for data

Question 2

A company is migrating a legacy application to AWS that requires a static IP address for client whitelisting. The application will run on EC2 instances behind an Application Load Balancer (ALB). The company wants to ensure the IP address does not change over time. What should the company do?

Accepted Answer

Use a Network Load Balancer (NLB) with an Elastic IP address. A Network Load Balancer (NLB) supports static IP addresses by allowing you to assign Elastic IPs directly to each of its Availability Zone subnets. This provides fixed IP endpoints for client whitelisting, while the NLB can forward traffic to the EC2 instances behind an ALB, preserving the application's architecture.

Answer

Assign an Elastic IP to each EC2 instance

Answer

Use Route 53 latency-based routing to point to the ALB

Answer

Use AWS Global Accelerator to get two static IP addresses

Question 3

A company is planning to migrate a critical application to AWS using the 7 Rs migration strategy. The application is currently running on a large VMware VM. Which THREE strategies are appropriate for this migration? (Choose three.)

Accepted Answer

Rehost: Use AWS VM Import/Export to migrate the VM to EC2. Rehost (A) is appropriate because AWS VM Import/Export allows you to migrate VMware VMs directly to Amazon EC2 as AMIs, enabling a lift-and-shift migration with minimal changes. This is a core 7 Rs strategy for moving existing virtualized workloads to AWS.

Answer

Retire: Decommission the application as it is no longer needed

Answer

Retain: Keep the application on-premises

Question 4

A company is migrating a critical application to AWS using a lift-and-shift strategy. The application has a legacy licensing model tied to specific hardware IDs. The company has already migrated the application to an Amazon EC2 instance but the license validation fails because the hardware ID changed. What is the MOST cost-effective and least disruptive solution?

Accepted Answer

Provision a Dedicated Host and associate the instance with it to control hardware IDs.. Provisioned Dedicated Hosts provide a consistent hardware ID for the EC2 instance, as the instance runs on a specific physical server. This allows the legacy license to validate against the same hardware ID after migration, without modifying the application or reverting the migration. It is the most cost-effective and least disruptive solution, as it avoids re-architecture or application changes.

Answer

Revert the migration and keep the application on-premises with a VPN connection to AWS for other services.

Answer

Modify the application's license file to accept the new hardware ID.

Answer

Use AWS License Manager to create a hardware-based license token that matches the original hardware ID.

Question 5

A company is migrating a web application to AWS and wants to use a blue/green deployment strategy to minimize downtime. Which AWS service should be used to route traffic between the blue and green environments?

Accepted Answer

Amazon Route 53. Amazon Route 53 is correct because it supports weighted DNS routing, which allows you to shift traffic gradually between blue and green environments by adjusting the weight values for DNS records. This enables a blue/green deployment strategy with minimal downtime, as Route 53 can route a percentage of traffic to the new environment while keeping the old environment active for rollback.

Answer

Amazon CloudFront

Answer

AWS Global Accelerator

Answer

Application Load Balancer (ALB)

Question 6

A company is migrating a critical application to AWS using a phased approach. The application uses a custom Linux distribution that is not supported by AWS Application Migration Service. Which THREE steps should the company take to migrate the application? (Choose THREE)

Accepted Answer

Use AWS Server Migration Service (SMS) to replicate the on-premises server to AWS.. AWS Server Migration Service (SMS) is the correct choice because it is an agentless service that can replicate on-premises servers running custom Linux distributions as long as they are supported by the underlying hypervisor. SMS uses incremental replication to create Amazon Machine Images (AMIs) from the source server, enabling a lift-and-shift migration without requiring the application to be converted to a different OS. This approach directly addresses the scenario where AWS Application Migration Service does not support the custom Linux distribution.

Answer

Convert the application to run on Amazon Linux 2 to simplify future management.

Answer

Use AWS Database Migration Service (DMS) to migrate the application server.

Question 7

A company is migrating a legacy on-premises application to AWS. The application requires static IP addresses for its clients to whitelist. The migration strategy includes using an Application Load Balancer (ALB) to distribute traffic across multiple EC2 instances in an Auto Scaling group. The clients require a fixed set of IP addresses to whitelist. Which solution meets the requirement?

Accepted Answer

Use a Network Load Balancer with Elastic IP addresses.. A Network Load Balancer (NLB) supports static IP addresses via Elastic IP (EIP) assignment per Availability Zone, which allows clients to whitelist a fixed set of IPs. The ALB, by contrast, does not support static IP assignment; its DNS name resolves to dynamic IPs that can change. Using an NLB with EIPs meets the requirement for a fixed whitelist while still distributing traffic to the ALB or directly to EC2 instances.

Answer

Use AWS Global Accelerator with the Application Load Balancer as an endpoint.

Answer

Use an Application Load Balancer and assign Elastic IP addresses to it.

Answer

Launch EC2 instances with Elastic IPs and place them behind a NAT Gateway.

Question 8

A media company is migrating its on-premises video processing infrastructure to AWS. The current infrastructure uses a custom application that splits video files into segments, transcodes them using FFmpeg, and assembles the final output. The application runs on a single server with 64 vCPUs and 256 GB RAM. The migration plan is to use AWS Batch with EC2 instances for the transcoding jobs. The video files are stored on an on-premises NAS and will be migrated to Amazon S3. The company needs to minimize latency for file access during migration and reduce the time to transfer initial data. The company has a 1 Gbps AWS Direct Connect connection. The total data volume is 500 TB. The migration window is 30 days. Which approach should the team use to transfer the initial data to S3 with the lowest latency and within the migration window?

Accepted Answer

Use multiple AWS Snowball Edge devices to transfer the data in parallel, then copy from the devices to S3 using the Snowball client.. AWS Snowball Edge devices provide a physical, high-bandwidth transfer method that bypasses network constraints entirely. With 500 TB of data and a 1 Gbps Direct Connect link, the theoretical maximum transfer over the network in 30 days is only ~324 TB (1 Gbps * 30 days * 86400 seconds/day / 8 bits per byte), which is insufficient. Multiple Snowball Edge devices in parallel can transfer the full 500 TB within the migration window without saturating the Direct Connect link, and the Snowball client efficiently copies data to S3 after the devices are returned.

Answer

Use AWS DataSync to transfer data over the Direct Connect connection in multiple concurrent tasks.

Answer

Use a single AWS Snowball Edge device and copy data incrementally.

Answer

Use S3 Transfer Acceleration to speed up transfers over the internet.

Question 9

A company is migrating a legacy on-premises application to AWS. The application uses a MySQL database with a complex stored procedure that runs every hour and takes approximately 10 minutes to complete. The company wants to minimize downtime during migration. Which TWO approaches should the company use to migrate the database?

Accepted Answer

Use AWS Database Migration Service (DMS) with ongoing replication from the source MySQL database to an Amazon RDS for MySQL instance.. AWS DMS with ongoing replication allows continuous synchronization from the source MySQL database to Amazon RDS for MySQL, minimizing downtime during migration. The complex stored procedure that runs hourly and takes 10 minutes is handled seamlessly as DMS captures ongoing changes, enabling a controlled cutover with minimal disruption.

Answer

Use AWS DMS with a full load only, without ongoing replication, and schedule a cutover window.

Answer

Take a full database dump using mysqldump and import it into an Amazon RDS for MySQL instance during a planned maintenance window.

Answer

Create an Amazon RDS for MySQL read replica from the on-premises database.

Question 10

An administrator is migrating an on-premises application to AWS. The application stores persistent data on a separate disk. The administrator launched an EC2 instance as a test and attached an additional EBS volume for the persistent data. The above exhibit shows the block device mapping for the test instance. Later, the administrator terminates the test instance, but the persistent data must be retained. However, after termination, the persistent data volume is also deleted. What is the most likely cause?

Accepted Answer

The administrator mistakenly stored the persistent data on the root volume (vol-0a1b2c3d4e5f67890), which has DeleteOnTermination set to true.. The exhibit shows the root volume (vol-0a1b2c3d4e5f67890) as the only volume with DeleteOnTermination set to true. The administrator intended to store persistent data on a separate EBS volume, but the data was actually stored on the root volume. When the instance was terminated, the root volume was deleted due to its DeleteOnTermination flag being true, causing the loss of the persistent data.

Answer

The instance was stopped instead of terminated, and the persistent data volume was detached during the stop.

Answer

The persistent data volume (vol-0f1e2d3c4b5a67890) had DeleteOnTermination set to false, but the administrator inadvertently changed it before termination.

Answer

The persistent data volume was not properly attached to the instance before termination.

Question 11

A manufacturing company is planning to migrate a legacy inventory application from a data center to AWS. The application runs on Windows Server 2012 R2 and uses a SQL Server 2014 database. The application requires low-latency access to a shared file system for storing CAD drawings. The current on-premises environment uses a SAN-based storage array for the database and a Windows File Server for the CAD files. The company wants to minimize operational overhead and avoid refactoring the application. The migration must be completed within 3 months. The company has already established a Direct Connect connection between the data center and AWS. Which migration strategy should the company use?

Accepted Answer

Use AWS Application Migration Service (AWS MGN) to replicate the on-premises Windows server to an EC2 instance. Migrate the SQL Server database using native backup and restore. Use Amazon FSx for Windows File Server to replace the on-premises file server, and mount the file share via SMB.. It uses AWS Application Migration Service (AWS MGN) to lift-and-shift the Windows Server 2012 R2 instance without refactoring, native backup/restore for SQL Server 2014 to minimize complexity, and Amazon FSx for Windows File Server to provide a fully managed SMB file share with low-latency access for CAD drawings. This approach meets the 3-month timeline, avoids application refactoring, and reduces operational overhead by replacing the SAN and Windows File Server with managed AWS services.

Answer

Use AWS App2Container to containerize the Windows application and deploy it on Amazon ECS. Migrate the database to Amazon RDS for SQL Server. Use Amazon EFS for the CAD file share.

Answer

Use AWS Database Migration Service (DMS) to migrate the SQL Server database to Amazon RDS for SQL Server. Use AWS Server Migration Service (SMS) to replicate the Windows server to an EC2 instance. Use AWS Storage Gateway file gateway to present the CAD files from Amazon S3.

Answer

Use AWS Application Migration Service (AWS MGN) to replicate the Windows server to an EC2 instance. Migrate the SQL Server database using native backup and restore. Use Amazon S3 with a VPC endpoint for the CAD file share, and mount S3 as a network drive using an S3 file gateway.

Question 12

Drag and drop the steps to configure an SAP S/4HANA high-availability cluster using AWS Resilience Hub into the correct order.

Accepted Answer

1. Define the application stack in Resilience Hub. 2. Associate a resilience policy and run an assessment. 3. Implement the recommended changes (e.g., configure HA cluster). 4. Validate the configuration with a test and monitor using Resilience Hub.. Resilience Hub helps assess and improve HA by defining stack, assessing policy, implementing changes, testing, and monitoring.

Answer

1. Define the application stack. 2. Implement recommended changes. 3. Associate a resilience policy and run an assessment. 4. Validate and monitor.

Answer

1. Associate a resilience policy and run an assessment. 2. Define the application stack. 3. Implement recommended changes. 4. Validate and monitor.

Answer

1. Define the application stack. 2. Associate a resilience policy and run an assessment. 3. Validate and monitor. 4. Implement recommended changes.

Question 13

Match the SAP HANA deployment option to its description.

Accepted Answer

Scale-up (Single Node): All SAP HANA resources are contained within a single large EC2 instance.. SAP HANA on AWS can be deployed as Scale-up (single large instance) or Scale-out (multiple smaller instances). High availability is achieved through HANA System Replication (HSR) to a standby, while backup uses cloud-native methods like EBS snapshots. Distractors swap definitions to test understanding.

Answer

Scale-up (Single Node): Multiple EC2 instances work together as a distributed system.

Answer

HANA System Replication (HSR): Using EBS snapshots for backup.

Question 14

Match the SAP transport type to its description.

Accepted Answer

Workbench transport: Contains repository objects like programs and function modules. Workbench transports carry repository objects (ABAP programs, dictionary objects), while Customizing transports carry client-specific configuration. Transport of Copies duplicates existing transport requests. Common confusions involve swapping these definitions.

Answer

Workbench transport: Contains configuration settings

Answer

Customizing transport: Contains ABAP development objects

Answer

Transport of Copies: Used for emergency corrections without a transport request

Question 15

A company is migrating a large SAP HANA database to AWS. They plan to use AWS DMS for ongoing replication. The source database is Oracle. During the full load phase, DMS reports an error: 'Failed to add supplemental logging for table'. What is the MOST likely cause?

Accepted Answer

The source database does not have supplemental logging enabled. The error 'Failed to add supplemental logging' indicates that DMS cannot capture changes because supplemental logging is not enabled on the source Oracle database. Supplemental logging is required for DMS to track changes during ongoing replication. Option A correctly identifies this missing prerequisite. Option B (target storage insufficient) would cause target-side errors, not this specific error. Option C (network latency) would cause connectivity or timeout issues. Option D (source database memory) would cause performance issues, not a supplemental logging error.

Answer

The target database storage is insufficient

Answer

The network latency between source and target is too high

Answer

The source database does not have enough memory for DMS

Question 16

A company is migrating an SAP system to AWS and needs to retain the same hostname for the SAP application server after migration. Which configuration should the company use?

Accepted Answer

Create a private hosted zone in Amazon Route 53 with an A record. A private hosted zone in Amazon Route 53 allows you to create an A record that maps a custom hostname to the private IP address of an EC2 instance. This ensures that the SAP application server retains the same hostname after migration, as DNS resolution within the VPC will consistently return the instance's private IP, regardless of instance changes or restarts.

Answer

Assign an Elastic IP to the EC2 instance and update the /etc/hosts file

Answer

Create a CNAME record in a public hosted zone pointing to the EC2 instance

Answer

Use a public hosted zone in Route 53 with an A record

Question 17

An organization is migrating an SAP HANA database to AWS. They plan to use AWS DMS for ongoing replication from an on-premises Oracle database to an Amazon RDS for Oracle instance. Which THREE configurations are necessary for DMS to perform ongoing replication? (Choose THREE.)

Accepted Answer

A target endpoint for the Amazon RDS for Oracle instance. AWS DMS requires a source endpoint to connect to the on-premises Oracle database, a target endpoint for the Amazon RDS for Oracle instance, and a replication instance to perform the data migration and ongoing replication. Option A (SNS topic) is for notifications, not a requirement for DMS replication. Option C (CloudWatch dashboard) is for monitoring, not a requirement. Therefore, the three necessary configurations are the source endpoint (E), the target endpoint (B), and the replication instance (D).

Answer

An Amazon SNS topic for replication alerts

Answer

An Amazon CloudWatch dashboard to monitor replication

Question 18

An organization is migrating a SAP ERP system to AWS. The system has a requirement for high availability for the SAP Central Services (ASCS) instance. Which architecture should be used to meet this requirement?

Accepted Answer

Deploy two ASCS instances in different Availability Zones with a shared Amazon EFS or FSx for Windows File Server and a floating IP using Route 53.. For high availability of SAP ASCS on AWS, the recommended architecture is two ASCS instances in different Availability Zones with shared storage (Amazon EFS or FSx for Windows File Server) and a floating IP managed via Route 53 or a secondary private IP with a cluster solution like SIOS or Pacemaker. This ensures automatic failover and meets SAP's high-availability requirements.

Answer

Deploy the ASCS on a single EC2 instance with a Multi-AZ RDS database.

Answer

Deploy two ASCS instances in different Availability Zones with an EBS volume attached to both.

Answer

Use an Application Load Balancer to distribute traffic between two ASCS instances.

Question 19

A company is migrating a SAP BusinessObjects environment to AWS. Which AWS service can be used to automate the deployment of the SAP BusinessObjects components?

Accepted Answer

AWS CloudFormation. AWS CloudFormation allows infrastructure as code to automate the deployment of SAP BusinessObjects. Option A is wrong because AWS OpsWorks is for Chef/Puppet, not directly for SAP. Option B is wrong because AWS Elastic Beanstalk is for web applications, not SAP. Option C is wrong because AWS CodePipeline is for CI/CD, not infrastructure deployment.

Answer

AWS OpsWorks

Answer

AWS Elastic Beanstalk

Answer

AWS CodePipeline

Question 20

A company is migrating a SAP HANA database to AWS. The database is 10 TB and requires a recovery point objective (RPO) of 15 minutes and a recovery time objective (RTO) of 2 hours. Which backup strategy should be used?

Accepted Answer

Configure SAP HANA Backint agent to back up directly to Amazon S3 every 15 minutes.. The SAP HANA Backint agent can back up directly to Amazon S3, allowing frequent backups (every 15 minutes) to achieve an RPO of 15 minutes. HANA Backint backups are fast and reliable, and restoring from S3 can meet the 2-hour RTO. Option A (AWS DMS replication) is for ongoing data replication, not backup; it may not support HANA backup requirements and could exceed RTO. Option C (backups to EBS volume then copy to S3) introduces delays and manual processes, making it difficult to achieve a 15-minute RPO. Option D (AWS Backup with EBS snapshots) typically has a minimum interval of 1 hour, insufficient for a 15-minute RPO, and restoring a 10 TB database from snapshots may exceed the 2-hour RTO.

Answer

Use AWS DMS to replicate the HANA database to a standby instance.

Answer

Schedule SAP HANA backups to an EBS volume and copy to S3.

Answer

Use AWS Backup with EBS snapshots every hour.