PAS-C01 Migration Practice Test 23 — 15 Questions

Question 1

A company is migrating a large SAP Business Warehouse (BW) system to AWS. The system uses SAP HANA as the database. The migration plan involves using SAP HANA System Replication (HSR) for near-zero downtime. During the initial synchronization, the network bandwidth is limited to 1 Gbps. The source database is 5 TB. How long will the initial synchronization approximately take, assuming no other bottlenecks?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Approximately 12 hours. 5 TB = 5,000 GB = 40,000 Gb (since 1 GB = 8 Gb). At 1 Gbps, time = 40,000 seconds ≈ 11.1 hours. This simple calculation ignores overhead, but among the options, 12 hours is the closest. The other options are unrealistic.

Answer

Approximately 2 hours

Answer

Approximately 6 hours

Answer

Approximately 24 hours

Question 2

A company is migrating an on-premises Oracle database to Amazon RDS for Oracle. The database is 2 TB and has a 4-hour maintenance window. Which AWS service should be used to minimize downtime during the migration?

Accepted Answer

AWS Database Migration Service (DMS). AWS Database Migration Service (DMS) supports ongoing replication with minimal downtime by using change data capture (CDC) to synchronize source and target databases continuously. Option B, AWS Server Migration Service (SMS), is designed for migrating entire server volumes, not databases. Option C, AWS Application Migration Service (MGN), automates server migration but is not optimized for database replication. Option D, AWS DataSync, is for transferring large file sets to or from AWS storage services, not for live database replication.

Answer

AWS Server Migration Service (SMS)

Answer

AWS Application Migration Service (MGN)

Answer

AWS DataSync

Question 3

A company is migrating a legacy application to AWS. The application requires a static IP address that must not change after migration. Which networking component should be used to ensure the application's public IP remains consistent?

Accepted Answer

Elastic IP address. An Elastic IP address is a static public IPv4 address that can be associated with an EC2 instance or a Network Load Balancer, ensuring the application's public IP remains consistent. Option B (Internet Gateway) is used for VPC internet access but does not provide a static IP. Option C (VPC Peering) is for connecting VPCs. Option D (NAT Gateway) is for outbound traffic.

Answer

Internet Gateway

Answer

VPC Peering

Answer

NAT Gateway

Question 4

A company is migrating a web application to AWS and wants to minimize latency for global users. Which AWS service should be used to cache static content at edge locations?

Accepted Answer

Amazon CloudFront. Amazon CloudFront is a content delivery network (CDN) that caches static content at edge locations worldwide, reducing latency for global users. It integrates with S3, EC2, and other origins, and uses a global network of points of presence to serve content from the location closest to the user. This directly addresses the requirement to cache static content at edge locations.

Answer

AWS WAF

Answer

Amazon S3 Transfer Acceleration

Answer

AWS Global Accelerator

Question 5

A company is migrating an on-premises Microsoft SQL Server database to Amazon RDS for SQL Server. The database is 5 TB and the migration must be completed within a 2-hour downtime window. Which AWS service should be used to perform the initial full load and then replicate ongoing changes?

Accepted Answer

AWS Database Migration Service (DMS). AWS DMS can perform a full load and then continuously replicate changes. Option A (AWS Snowball Edge) is for large data transfer but does not support ongoing replication. Option C (AWS Application Migration Service) is for server migration. Option D (AWS DataSync) is for file transfers.

Answer

AWS Snowball Edge

Answer

AWS Application Migration Service (MGN)

Answer

AWS DataSync

Question 6

A company is migrating a legacy SAP ERP system to AWS. The system uses a custom kernel and has strict latency requirements. The SAP application servers must be placed in the same AWS region as the database. Which migration strategy should be used?

Accepted Answer

Rehost. Rehost (lift-and-shift) moves the SAP ERP system to AWS with minimal changes, preserving the custom kernel and existing application architecture while placing app servers and database in the same region to meet latency requirements. This is the fastest migration strategy and is appropriate when the goal is to migrate without re-architecting. Replatform, refactor, and repurchase all involve changes that would risk the custom kernel and add time.

Answer

Replatform

Answer

Refactor

Answer

Repurchase

Question 7

A company is migrating a file server to AWS and needs a scalable, highly available file storage solution that supports the SMB protocol. Which AWS service should be used?

Accepted Answer

Amazon FSx for Windows File Server. Amazon FSx for Windows File Server supports SMB protocol and provides fully managed Windows file servers. Option A (Amazon EFS) supports NFS, not SMB. Option B (Amazon S3) is object storage. Option D (AWS Storage Gateway) can present file shares but is not a fully managed file server.

Answer

Amazon Elastic File System (EFS)

Answer

AWS Storage Gateway

Answer

Amazon Simple Storage Service (S3)

Question 8

A company is migrating a multi-tier application to AWS. The application includes a web tier, application tier, and database tier. To ensure security, the database tier must not be accessible from the internet. Which VPC configuration should be used?

Accepted Answer

Place the database tier in private subnets. Placing the database tier in private subnets ensures it is not directly accessible from the internet. Option A (subnets with a NAT Gateway) provides outbound internet access only, not inbound. Option B (subnets with an Internet Gateway) would allow direct internet access. Option C (all tiers in public subnets) would expose all tiers to the internet. Only option D correctly restricts internet access to the database tier by placing it in private subnets.

Answer

Place the database tier in subnets with a NAT Gateway

Answer

Place the database tier in subnets with an Internet Gateway

Answer

Place all tiers in public subnets

Question 9

A company is migrating a critical SAP system to AWS and needs to ensure high availability for the SAP Central Services (ASCS) and Enqueue Replication Server (ERS). Which AWS service can be used to manage the virtual IP address required for the SAP high availability setup?

Accepted Answer

Elastic Load Balancer (ELB). For SAP high availability on AWS, the virtual IP (VIP) for ASCS/ERS is typically managed using a Network Load Balancer (NLB), which provides a static IP address that can be used as the VIP. NLB supports health checks and automatic failover between active and passive instances. Amazon Route 53 Application Recovery Controller is designed for multi-region recovery and DNS-level failover, not for managing a VIP within a single region. AWS Transit Gateway handles network connectivity between VPCs, and AWS Global Accelerator provides static IPs for global traffic optimization, not for SAP HA VIP management.

Answer

AWS Transit Gateway

Answer

Amazon Route 53 Application Recovery Controller

Answer

AWS Global Accelerator

Question 10

A company is migrating an on-premises data center to AWS. The company needs to transfer 50 TB of data to Amazon S3. Which TWO AWS services can be used for this data transfer?

Accepted Answer

AWS Snowball Edge. AWS Snowball Edge is a petabyte-scale data transport solution that uses secure physical devices to transfer large amounts of data into and out of AWS. For a 50 TB migration, Snowball Edge provides a faster and more reliable option than internet-based transfers, as it avoids bandwidth limitations and long transfer times. The device is shipped to the customer, data is copied locally, and then returned to AWS for ingestion into Amazon S3.

Answer

AWS Application Migration Service (MGN)

Answer

AWS CloudFormation

Answer

AWS Database Migration Service (DMS)

Question 11

A company is migrating a web application to AWS and wants to improve security. The application uses a classic three-tier architecture. Which TWO security measures should the company implement?

Accepted Answer

Use AWS WAF to protect the web tier. Option D is correct because AWS WAF is a web application firewall that filters and monitors HTTP(S) requests reaching the web tier, protecting against common exploits like SQL injection and cross-site scripting in a three-tier web application. Option E is correct because security groups act as stateful virtual firewalls at the instance/ENI level, and using them to allow only required traffic between the web, application, and database tiers enforces least-privilege segmentation. Option A is incorrect because exposing the database tier directly to the internet removes a critical layer of defense and violates the principle of keeping data stores in private subnets. Option B is incorrect because Amazon S3 Transfer Acceleration only speeds up uploads/downloads to S3 buckets and has no bearing on securing a three-tier application. Option C is incorrect because placing all tiers in public subnets exposes the application and database tiers to the internet, defeating network isolation.

Answer

Allow direct internet access to the database tier

Answer

Use Amazon S3 Transfer Acceleration

Answer

Place all tiers in public subnets

Question 12

A company is migrating SAP applications to AWS and uses the CloudFormation template snippet shown in the exhibit. The SAP ASCS instance requires a shared file system for the transport directory. However, the template does not create any shared storage. Which AWS resource should be added to the template to provide a shared file system?

Accepted Answer

Amazon EFS file system. Amazon EFS provides a shared, POSIX-compliant NFS file system that can be mounted simultaneously by multiple EC2 instances, which is exactly what SAP ASCS requires for its transport directory (/usr/sap/trans). EFS is the standard AWS shared storage solution for SAP central services in multi-instance or high-availability deployments.

Answer

Instance Store

Answer

Additional Amazon EBS volume

Answer

Amazon S3 bucket

Question 13

A company is migrating its on-premises Oracle database to Amazon RDS for Oracle. They need to minimize downtime and ensure data consistency. Which AWS service should they use for the initial data load and ongoing replication?

Accepted Answer

AWS Database Migration Service (DMS). AWS Database Migration Service (DMS) is purpose-built for migrating databases to AWS with minimal downtime. It performs the initial full load and then continuous replication (change data capture) from the source Oracle database to Amazon RDS for Oracle, keeping data consistent until cutover. DMS supports heterogeneous and homogeneous migrations and handles ongoing replication natively.

Answer

AWS Snowball Edge

Answer

AWS DataSync

Answer

AWS Schema Conversion Tool (SCT)

Question 14

An organization is migrating a legacy Windows-based .NET application to AWS. The application currently uses IIS and SQL Server on a single server. They want to minimize changes to the application code. Which migration strategy is most appropriate?

Accepted Answer

Rehost the application on Amazon EC2 with the same OS and database. Rehosting (lift-and-shift) involves moving the application to AWS as-is, typically using Amazon EC2, which minimizes code changes. Option B is correct. Option A (Replatform) would involve moving to Amazon RDS for SQL Server and Elastic Beanstalk, which may require some configuration changes. Option C (Refactor) would require significant code changes to adopt microservices. Option D (Repurchase) means buying a new SaaS product, which is not minimal change.

Answer

Replatform by moving to Amazon RDS for SQL Server and Elastic Beanstalk

Answer

Refactor the application to use a microservices architecture

Answer

Repurchase by moving to a SaaS-based application

Question 15

A company plans to migrate 50 TB of archived data from on-premises tape storage to Amazon S3 Glacier Deep Archive. The data is rarely accessed. Which migration method is most cost-effective and suitable for the data volume?

Accepted Answer

AWS Snowball Edge. AWS Snowball Edge is a physical device that can transfer large amounts of data offline, avoiding high network costs. For 50 TB, Snowball Edge is cost-effective and efficient. Option C is correct. Option A (AWS DataSync) is for network-based transfers, which may be slow and costly for 50 TB. Option B (AWS CLI with multipart upload) would require significant network bandwidth and time. Option D (AWS Database Migration Service) is for database migration.

Answer

AWS DataSync

Answer

AWS CLI with multipart upload

Answer

AWS Database Migration Service (DMS)