PAS-C01 Technology Practice Test 19 — 15 Questions

Question 1

An SAP S/4HANA system on AWS uses an Application Load Balancer (ALB) to distribute traffic to multiple SAP application servers. Users report intermittent HTTP 502 errors when accessing the SAP Fiori launchpad. The ALB health checks are configured to use the default HTTP health check on port 80. Which action should be taken to resolve the 502 errors?

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

Accepted Answer

Change the ALB health check to use HTTPS on the SAP application server's HTTPS port.. The intermittent 502 errors are likely caused by the ALB health check failing because it is using HTTP on port 80, while the SAP application server expects HTTPS. When the health check fails, the ALB considers the target unhealthy and returns 502 errors. Changing the health check to HTTPS on the correct port resolves the issue by ensuring accurate health monitoring.

Answer

Increase the ALB idle timeout to 300 seconds.

Answer

Configure the ALB to use the HTTP/2 protocol for client connections.

Answer

Enable sticky sessions on the ALB target group.

Question 2

A company runs SAP NetWeaver on AWS and uses an Application Load Balancer (ALB) to distribute traffic to multiple SAP application servers. The company wants to ensure that user sessions are maintained even if an application server becomes unavailable. The SAP application servers are stateless and store session data in a shared Amazon ElastiCache for Redis cluster. Which configuration should be implemented to meet this requirement?

Accepted Answer

Disable sticky sessions on the ALB and ensure that the application servers use the ElastiCache cluster for session state.. The correct answer is to disable sticky sessions and ensure the application servers use ElastiCache for session state. Because the servers are stateless and session data is external, sticky sessions are unnecessary and can hinder load balancing. The ALB will route requests to any healthy server, and the session data is retrieved from ElastiCache, maintaining user sessions across server failures.

Answer

Enable sticky sessions (session affinity) on the ALB using duration-based cookies.

Answer

Configure the ALB to use cross-zone load balancing and enable health checks on the application servers.

Answer

Configure the ALB to use Amazon ElastiCache for Redis as an external session store and disable sticky sessions.

Question 3

A company runs an SAP NetWeaver AS ABAP central services instance on an Amazon EC2 instance in a single Availability Zone. The instance uses an EBS-backed root volume that was created from a public SAP-certified AMI. The company's disaster recovery plan requires that a replacement instance can be launched in a different Availability Zone within the same AWS Region with the same SAP instance number, virtual hostname, and ASCS data. Which combination of steps must be performed to meet this requirement with minimal operational overhead?

Accepted Answer

Create an EBS snapshot of the root and SAP data volumes, create a private AMI from the snapshot, and launch a replacement instance from that AMI into a subnet in the target Availability Zone, then attach the SAP data volumes and update the hostname mapping.. Recovering a single-AZ SAP central services instance within the same Region requires an AMI built from EBS snapshots of the instance volumes and a relaunch into a subnet in the target Availability Zone. The ASCS data must travel with the instance, and the SAP virtual hostname mapping must be updated so the enqueue and message server clients reconnect. This avoids cross-Region copies and keeps the SAP instance number intact.

Answer

Replace the root volume attachment with an Amazon FSx for Windows File Server share, then launch the replacement instance in the target Availability Zone and mount the share as the SAP global directory.

Answer

Create an EBS snapshot schedule for the root volume, and in the DR Region register the snapshot as an AMI, then launch the replacement instance from that AMI after updating the SAP profile with the new hostname.

Answer

Use AWS Backup to copy the EC2 instance and its EBS volumes into a backup vault in the target Availability Zone, then restore the instance directly into that Availability Zone while preserving the SAP instance number and virtual hostname.

Question 4

A company is migrating an SAP ERP Central Component (ECC) system to AWS. The system uses an Oracle database running on a single EC2 instance with a 2 TB gp2 EBS volume. During performance testing, the database experiences high write latency. The company wants to improve write performance while keeping costs reasonable. Which storage configuration should the SAP administrator recommend?

Accepted Answer

Replace the gp2 volume with a larger gp3 volume and provision additional IOPS and throughput independently.. gp3 volumes decouple IOPS and throughput from volume size, allowing you to provision the required performance without over-provisioning storage. This makes gp3 the most cost-effective choice for improving write performance on an Oracle database. Other options either cost more, add complexity, or do not directly address the volume performance bottleneck.

Answer

Create a RAID 0 array using multiple gp2 volumes to increase total IOPS and throughput.

Answer

Replace the gp2 volume with an io1 volume and provision the required IOPS based on the volume size.

Answer

Enable EBS optimization on the EC2 instance and increase the instance size to one with higher network bandwidth.

Question 5

A company is running an SAP S/4HANA system on AWS. The system uses an Amazon RDS for SAP HANA database? No, SAP HANA is not available on RDS. The company uses an EC2 instance for SAP HANA. They need to implement a backup strategy that meets SAP's requirements for data and log backups. The backup should be stored durably and be restorable to a point in time. Which AWS service should the company use for storing SAP HANA backups?

Accepted Answer

Amazon S3 with versioning enabled and lifecycle policies to transition to Glacier.. Amazon S3 is the recommended storage for SAP HANA backups on AWS due to its durability, scalability, and integration with SAP HANA's backint API. Enabling versioning protects backups, and lifecycle policies optimize costs. This allows for point-in-time recovery when log backups are also stored.

Answer

Amazon FSx for Windows File Server with shadow copies enabled.

Answer

Amazon EFS with a mount target in the same VPC, using SAP HANA's file-based backup.

Answer

Amazon EBS snapshots stored in a separate Availability Zone.

Question 6

A company is running an SAP HANA database on an Amazon EC2 instance with multiple Amazon EBS volumes. The database is performance-sensitive, and the storage administrator must ensure that the EBS volumes provide consistent, low-latency I/O. The company wants to use a single EBS volume type that supports up to 64,000 IOPS and 1,000 MiB/s throughput per volume. Which EBS volume type should the administrator choose?

Accepted Answer

io2 Block Express. The requirement is a single EBS volume type that supports up to 64,000 IOPS and 1,000 MiB/s per volume for a performance-sensitive SAP HANA database. io2 Block Express volumes exceed these specifications and are validated for SAP HANA, providing the necessary performance and low latency. Other volume types either have lower IOPS limits or are not optimized for this workload.

Answer

gp3

Answer

st1

Answer

io1

Question 7

A company is migrating an SAP ERP system to AWS. The SAP application servers run on Amazon EC2 instances and require a shared file system for the /usr/sap/trans directory. The file system must be highly available across multiple Availability Zones, support NFSv4, and provide sub-millisecond latency. Which AWS storage service should they use?

Accepted Answer

Amazon FSx for NetApp ONTAP. Amazon FSx for NetApp ONTAP is a fully managed, highly available NFS file system that supports NFSv4 and delivers sub-millisecond latency. It is certified for SAP applications and is a common choice for shared file systems such as /usr/sap/trans. It spans multiple Availability Zones, meeting the high availability requirement, and provides the performance needed for SAP transport directories.

Answer

Amazon EFS with Provisioned Throughput

Answer

Amazon S3 with a file gateway

Answer

Amazon FSx for Windows File Server

Question 8

A solutions architect is designing the storage layout for an SAP HANA scale-out system on AWS. The database will run on multiple Amazon EC2 instances with SAP HANA to use multiple hosts. Which TWO actions must the architect take to support the scale-out deployment? (Choose two.)

Accepted Answer

Use an overlay network or a dedicated subnet with low-latency connectivity between the HANA hosts for the scale-out interconnect.. A scale-out SAP HANA system requires each host to have its own block storage for data and log areas, sized and provisioned to meet HANA's KPIs. The hosts also need a dedicated low-latency interconnect, which is achieved with a cluster placement group and enhanced networking. Shared file systems and object storage cannot replace per-host block volumes for HANA persistence, and the interconnect is essential for distributed processing.

Answer

Attach an Amazon S3 gateway endpoint and configure HANA to use S3 as the primary data area.

Answer

Mount a single Amazon EFS file system across all HANA hosts for the data and log areas.

Answer

Ensure that an Amazon FSx for Lustre file system is mounted on all hosts to hold the HANA data and log files.

Question 9

A company is migrating an SAP HANA database to AWS. The database will run on an Amazon EC2 X2iedn instance with multiple Amazon EBS volumes. The company needs to ensure that the storage layout follows SAP best practices for performance and reliability. Which TWO actions should be taken? (Choose two.)

Accepted Answer

Enable Amazon EBS encryption on all HANA volumes using AWS Key Management Service (AWS KMS) customer managed keys.. SAP HANA storage best practices on AWS include separating data and log files onto distinct Amazon EBS volumes to optimize performance and enable independent scaling. Additionally, all HANA volumes should be encrypted using Amazon EBS encryption with AWS KMS customer managed keys to protect data at rest and meet compliance requirements. Using a single volume, gp2 volumes, or Multi-Attach does not align with SAP recommendations and can cause performance or data integrity issues.

Answer

Configure the HANA data volume with a single io2 volume and enable Multi-Attach to allow multiple EC2 instances to access it.

Answer

Use Amazon EBS gp2 volumes for the HANA log volume to reduce cost.

Answer

Use a single large Amazon EBS volume for all HANA files to simplify management.

Question 10

A company is migrating an SAP HANA database to AWS. The database is currently 2 TB in size and grows by 10% annually. The company requires a storage solution that provides at least 50,000 IOPS and 1,000 MB/s throughput, with the ability to scale performance independently of capacity. The solution must also support SAP HANA's write-intensive workload and provide low latency. Which two storage configurations should be used? (Choose two.)

Accepted Answer

Use Amazon EBS io2 Block Express volumes with provisioned IOPS.. Amazon EBS gp3 and io2 Block Express volumes both support independent provisioning of IOPS and throughput, and can meet the performance requirements for SAP HANA. gp3 is cost-effective and can be striped to achieve higher performance, while io2 Block Express offers higher maximum IOPS and sub-millisecond latency. Both are certified for SAP HANA on AWS.

Answer

Use instance store volumes for the HANA data and log volumes.

Answer

Use Amazon FSx for Lustre with a scratch file system for the HANA data volume.

Answer

Use Amazon S3 with S3 Transfer Acceleration for the HANA data volume.

Question 11

A company is migrating an SAP ERP Central Component (ECC) system to AWS. The system uses an Oracle database running on AIX. The company wants to minimize downtime during the migration and ensure that the database remains consistent. They plan to use AWS Database Migration Service (AWS DMS) for the migration. Which migration strategy should be used to achieve minimal downtime?

Accepted Answer

Use AWS DMS with change data capture (CDC) to replicate ongoing changes from the source Oracle database to an Amazon RDS for Oracle database.. The correct strategy is to use AWS DMS with change data capture (CDC) to replicate ongoing changes directly to Amazon RDS for Oracle. This keeps the target synchronized with the source during the migration, allowing for a quick cutover with minimal downtime. It ensures data consistency and avoids the need for lengthy maintenance windows.

Answer

Use Oracle Data Guard to replicate the database to an Amazon EC2 instance running Oracle, then switch over to Amazon RDS for Oracle.

Answer

Use AWS DMS with CDC to replicate to an Amazon EC2 instance running Oracle, then use Oracle Data Pump to migrate to Amazon RDS for Oracle.

Answer

Use AWS DMS to perform a one-time full load of the Oracle database to Amazon RDS for Oracle, then switch over during a maintenance window.

Question 12

An SAP S/4HANA system runs on an Amazon EC2 instance with SAP HANA in scale-up mode. The database is 2.5 TB and the instance uses a single Amazon EBS gp3 volume for /hana/data and /hana/log. During month-end processing, the SAP administrator observes elevated HANA savepoint and log write times, and AWS metrics show sustained EBS burst balance depletion on the volume. The company wants to eliminate the burst-related latency without changing the HANA data footprint. Which change should the administrator make?

Accepted Answer

Increase the provisioned IOPS and throughput settings of the existing gp3 volume to values above the baseline, and monitor the EBS burst balance metric to confirm the volume is no longer relying on burst credits.. The gp3 baseline of 3,000 IOPS and 125 MiB/s is insufficient for a large HANA scale-up workload during peak processing, and burst credits are exhausted under sustained load. Provisioning IOPS and throughput above the baseline on the gp3 volume removes the reliance on burst credits and provides the consistent performance HANA needs. This is a non-disruptive configuration change and does not require resizing the volume or migrating data.

Answer

Convert the gp3 volume to a st1 throughput-optimized HDD volume and enable EBS fast snapshot restore to reduce first-touch latency on the HANA data files.

Answer

Enable EBS Multi-Attach on the gp3 volume and attach it to a second EC2 instance that runs a HANA secondary, then redirect write operations to the secondary instance.

Answer

Move the HANA data and log files to an Amazon S3 bucket mounted through a file gateway, and configure HANA to write directly to the mounted bucket path to offload EBS pressure.

Question 13

A company runs an SAP NetWeaver Java stack on Amazon EC2 instances behind an Application Load Balancer. The application servers store session data in a shared file system. Users report that after a scale-out event, some sessions are lost and they are logged out. The solutions architect must ensure session persistence across application server instances without changing the application code. Which solution meets these requirements?

Accepted Answer

Use an Amazon ElastiCache for Redis cluster as the session store and configure the SAP NetWeaver Java stack to persist sessions there.. Session persistence across multiple application server instances requires a shared session store that all instances can reach. An ElastiCache for Redis cluster provides this shared, highly available store, and the SAP NetWeaver Java stack can be configured to use it without application code changes. Sticky sessions, load balancer settings, and per-instance EBS volumes do not provide the necessary shared state.

Answer

Enable sticky sessions on the Application Load Balancer using duration-based stickiness.

Answer

Configure the Application Load Balancer to use cross-zone load balancing and increase the deregistration delay.

Answer

Store session data on an Amazon EBS volume attached to each application server instance.

Question 14

A company is planning to deploy SAP HANA on AWS using a scale-out architecture with multiple EC2 instances. The company wants to ensure that the HANA database can automatically recover from an instance failure and that the data is replicated across Availability Zones. The company also wants to minimize the recovery time objective (RTO). Which two actions should the solutions architect take to meet these requirements? (Choose two.)

Accepted Answer

Deploy the HANA scale-out system across multiple Availability Zones using a Pacemaker cluster with the `fence_aws` agent.. Deploying a HANA scale-out system across Availability Zones with a Pacemaker cluster and `fence_aws` agent provides automatic failover and fencing. Configuring HANA system replication with `logreplay` and `sync` mode ensures synchronous data replication, minimizing RTO and data loss. Together, these actions meet the requirements for high availability and fast recovery.

Answer

Use Amazon FSx for Lustre for the HANA data and log volumes to achieve high throughput and low latency.

Answer

Configure SAP HANA system replication with the `logreplay` operation mode and enable `async` replication between Availability Zones.

Answer

Use Amazon EBS volumes with io2 Block Express for the HANA data and log volumes, and enable EBS Multi-Attach on the log volume.

Question 15

A company is deploying a new SAP S/4HANA system on AWS. The SAP HANA database will run on an Amazon EC2 instance. The company wants to ensure that the EC2 instance meets the SAP HANA hardware requirements for memory and CPU. Which instance family should they choose?

Accepted Answer

X1e instances with high memory and vCPU count.. SAP HANA on AWS requires instances that are certified by SAP and meet specific memory and CPU requirements. X1e instances are among the SAP-certified families for production HANA deployments, offering large memory sizes and high vCPU counts. They are designed for memory-intensive workloads and provide the necessary performance and reliability. Other instance families like M5, R5, or T3 are not certified for production HANA and would not meet SAP's hardware requirements.

Answer

R5 instances with high memory.

Answer

M5 instances with memory optimized configuration.

Answer

T3 instances with burstable performance.