PAS-C01 Technology Practice Test 17 — 15 Questions

Question 1

You are managing an SAP S/4HANA system on AWS. The system uses a multi-AZ deployment with two application servers (one in us-east-1a, one in us-east-1b) and a HANA database in us-east-1a with a standby in us-east-1b using HSR. The /sapmnt and /usr/sap/trans are on an EFS file system. Recently, you noticed that during a failover test of the HANA database, the application servers lost connectivity to the database for several minutes, causing errors. You also observed that after the failover, the application servers could not reconnect until the EFS mount was remounted. What is the most likely cause and solution?

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

Accepted Answer

Configure EFS mount targets in each AZ and use an EFS access point with a consistent mount path.. The most likely cause is that the EFS mount targets were not configured in both Availability Zones, so when the HANA database failed over to us-east-1b, the application servers in that AZ could not reach the EFS mount target in us-east-1a (or the mount became stale). Configuring EFS mount targets in each AZ and using an access point with a consistent mount path ensures both application servers can reach EFS regardless of which AZ is active, resolving the connectivity loss.

Answer

Increase the provisioned throughput on the EFS file system to handle the increased load during failover.

Answer

Migrate the shared file systems to Amazon FSx for NetApp ONTAP with multi-AZ deployment.

Answer

Reconfigure SAP HANA System Replication to use synchronous replication.

Question 2

Your company is running SAP Business Suite on Oracle on AWS. The database is hosted on an EC2 instance with EBS volumes configured as RAID 0 for performance. You are planning to migrate to SAP HANA on AWS. The new HANA database will be hosted on a single EC2 instance with EBS io2 volumes. You need to ensure minimal downtime during the migration. Which approach should you take?

Accepted Answer

Use SAP HANA System Replication (HSR) with DMO to replicate data while the source is running, then perform a final cutover.. The correct approach is to use SAP HANA System Replication (HSR) with a Database Migration Option (DMO) migration. This allows continuous data replication from the source Oracle database to the target SAP HANA database while the source system remains operational, minimizing downtime. The final cutover is performed quickly. Option B (AWS DMS) is not suitable because AWS DMS does not support SAP HANA as a target. Option C (SAP LaMa) is a landscape management tool that can automate some migration steps but does not in itself provide near-zero downtime replication; it would typically be used with other methods. Option D (classic DMO with SUM in a single step) requires stopping the source system, resulting in extended downtime.

Answer

Use AWS Database Migration Service (DMS) to continuously replicate from Oracle to HANA.

Answer

Use SAP Landscape Management (LaMa) to automate the migration with minimal downtime.

Answer

Perform a classic migration using SAP Software Update Manager (SUM) with database migration option (DMO) in a single step, stopping the source system.

Question 3

A company runs an SAP HANA database on an EC2 instance with a 2 TB EBS gp3 volume. The instance type is r5.8xlarge. To improve disk performance for high-throughput write operations, the SAP administrator wants to increase IOPS. Which TWO actions should the administrator take to achieve the required IOPS? (Choose two.)

Accepted Answer

Modify the volume to provision additional IOPS up to 16,000.. Gp3 volumes allow independent provisioning of IOPS up to 16,000, which directly increases performance for high-throughput write operations. Option E is correct because increasing the volume size also increases the baseline IOPS for gp3 (baseline is 3 IOPS/GiB). Option A is wrong because T2 unlimited credits apply to burstable instances, not EBS performance. Option B is wrong because st1 is a throughput-optimized HDD volume, not suitable for high IOPS. Option D is wrong because EBS optimization is enabled by default on r5 instances and is not a configurable action.

Answer

Configure the instance to use T2 unlimited credits.

Answer

Change the volume type to st1 (throughput optimized HDD).

Answer

Enable EBS optimization on the EC2 instance.

Question 4

A company runs SAP S/4HANA on AWS using a multi-ABAP application server setup with a central services instance (ASCS) and enqueue replication. After a recent OS patching, the secondary application server fails to start, with errors indicating it cannot connect to the enqueue replication server (ERS). The ERS process is running on the ASCS instance. The network team confirms that security groups and NACLs are properly configured. Which THREE steps should be taken to resolve this issue? (Choose three.)

Accepted Answer

Check the SAP instance profile for the enqueue replication parameters (e.g., rdisp/enq_repl_server).. Option B is correct because the enqueue replication parameters in the SAP instance profile (such as rdisp/enq_repl_server, enque/serverhost, and enque/serverport) define how the secondary application server locates the ERS; if these were altered or lost during patching, the connection to the ERS will fail. Option C is correct because the enqueue replication server process (enre) must actually be running on the ASCS instance and listening on the expected port (typically 32<instance_number> for the enqueue service); if enre is not active or bound to the wrong port, the secondary server cannot connect. Option D is correct because name resolution of the ERS hostname via DNS or /etc/hosts is required for the secondary application server to establish the TCP connection; a stale or missing entry after patching would cause connection failures even with correct security groups and NACLs. Option A is not relevant because instance sizing does not affect the ability to connect to the ERS, and the error is connectivity-related, not resource-related. Option E is not appropriate because updating the SAP kernel is unrelated to resolving an ERS connection failure and could introduce unnecessary changes.

Answer

Change the secondary application server instance type to a larger size.

Answer

Update the SAP kernel on the secondary application server to the latest version.

Question 5

A company runs SAP ERP on AWS using a single EC2 instance for the database and application. The system has been in production for two years. The SAP administrator receives a notification that the EC2 instance's underlying hardware is scheduled for retirement in two weeks. The administrator needs to minimize downtime and ensure the SAP system is available during the maintenance. Which action should the administrator take?

Accepted Answer

Stop the instance and then start it again to migrate to new hardware.. Stopping and then starting the instance (D) is correct because when an EC2 instance is stopped and started, it is migrated to new hardware, resolving the retirement notice. This action typically completes within a few minutes and minimizes downtime compared to other options. It also preserves the instance's private IP address and Elastic IP, ensuring SAP system availability.

Answer

Reboot the instance to move it to healthy hardware.

Answer

Request an extension of the retirement date from AWS Support.

Answer

Create an AMI of the instance and launch a new instance from the AMI.

Question 6

A company runs SAP HANA on an Amazon EC2 X2idn instance with multiple Amazon EBS volumes for data and log. They need to ensure that the EBS volumes are optimally configured for SAP HANA write-intensive log I/O. Which EBS volume type and configuration should be used for the log volume?

Accepted Answer

Provisioned IOPS SSD (io2 Block Express) volume with 99.999% durability and up to 256,000 IOPS per volume.. The SAP HANA log volume requires low latency and high IOPS to handle the write-intensive workload of transaction logs. Provisioned IOPS SSD (io2 Block Express) volumes are specifically designed for such demanding workloads, offering high durability, consistent performance, and the ability to provision up to 256,000 IOPS per volume. This aligns with AWS best practices for SAP HANA storage configuration.

Answer

General Purpose SSD (gp3) volume with 16,000 IOPS and 1,000 MB/s throughput.

Answer

Throughput Optimized HDD (st1) volume with 500 MB/s throughput per TiB.

Answer

Cold HDD (sc1) volume with 250 MB/s throughput per TiB.

Question 7

A company is running SAP S/4HANA on AWS with the database on an Amazon EC2 instance. The SAP administrator wants to ensure that the HANA database can automatically fail over to a secondary Availability Zone in case of an AZ outage. The company requires a recovery time objective (RTO) of less than 15 minutes and a recovery point objective (RPO) of less than 1 minute. Which solution should the administrator implement?

Accepted Answer

Configure SAP HANA system replication with synchronous mode (SYNC) to a secondary EC2 instance in another AZ, and use an overlay IP with a cluster manager such as Pacemaker for automatic failover.. SAP HANA system replication with synchronous mode ensures no data loss, and an overlay IP with a cluster manager like Pacemaker provides automated failover to a secondary AZ. This meets the RTO and RPO requirements. Other options either do not support SAP HANA (RDS, DMS as target) or are technically infeasible (EBS Multi-Attach across AZs).

Answer

Set up Amazon RDS for SAP HANA with Multi-AZ deployment, which automatically handles failover and provides synchronous replication across AZs.

Answer

Enable Amazon EBS Multi-Attach on the HANA data volume and attach it to instances in two AZs, using a cluster manager for failover.

Answer

Use AWS Database Migration Service (DMS) to continuously replicate the HANA database to a standby instance in another AZ, and use a Route 53 health check to redirect traffic.

Question 8

A company is deploying SAP S/4HANA on AWS using a distributed deployment. The database runs on an EC2 instance with SAP HANA, and the application servers run on separate EC2 instances. The company wants to ensure that the application servers can communicate with the database using SAP's hostname resolution. They have configured Amazon Route 53 private hosted zone for the SAP systems. Which additional step is required to enable SAP hostname resolution for the application servers?

Accepted Answer

Configure the EC2 instances to use the Route 53 Resolver with the private hosted zone associated with the VPC.. SAP application servers require DNS resolution to locate the HANA database. Amazon Route 53 private hosted zones provide DNS records for internal resources. To enable resolution, the private hosted zone must be associated with the VPC containing the EC2 instances. The default VPC DNS resolver (AmazonProvidedDNS) then resolves queries for those records. This is the standard AWS approach for SAP hostname resolution.

Answer

Enable DNS hostnames and DNS resolution in the VPC settings, and associate the private hosted zone with the VPC.

Answer

Install and configure a local DNS server on each application server that forwards queries to Route 53.

Answer

Modify the /etc/hosts file on each application server to include the database hostname and IP address.

Question 9

A company is migrating its SAP NetWeaver AS ABAP system to AWS. The system currently uses NFS for the /sapmnt and /usr/sap/trans directories. The IT team wants to use a fully managed, highly available, and POSIX-compliant shared file system that integrates with AWS Backup and supports automatic replication across Availability Zones. Which AWS service should they choose?

Accepted Answer

Amazon FSx for NetApp ONTAP. The correct choice is Amazon FSx for NetApp ONTAP because it is a fully managed, POSIX-compliant NFS file system designed for enterprise workloads including SAP. It supports high availability across Availability Zones, integrates with AWS Backup, and offers replication, making it the recommended shared storage for SAP NetWeaver on AWS. Other options either use the wrong protocol or lack the required performance and SAP-specific features.

Answer

Amazon EFS with regional availability

Answer

Amazon FSx for Windows File Server

Answer

Amazon S3 mounted using s3fs

Question 10

A company is running SAP NetWeaver on AWS and wants to ensure high availability of the SAP central services (ASCS/SCS) using a Windows Server Failover Cluster (WSFC). They have deployed two EC2 instances in different Availability Zones. Which two configurations are required to enable the WSFC to manage the SAP central services? (Choose two.)

Accepted Answer

Configure a shared file witness for the cluster quorum using a file share on Amazon FSx for Windows File Server.. To achieve high availability for SAP central services on AWS using WSFC, you need a quorum witness and shared storage for the SAP central services files. A file share witness on Amazon FSx for Windows File Server provides a reliable quorum mechanism across AZs. Additionally, deploying the SAP central services on a shared file system like FSx for Windows File Server allows the cluster to fail over the services between nodes. These two configurations are essential for a supported and highly available setup.

Answer

Configure a cloud witness for the cluster quorum using an Amazon S3 bucket.

Answer

Use an Amazon EBS Multi-Attach volume for the SAP central services data and attach it to both instances.

Answer

Enable SMB Transparent Failover on the FSx for Windows File Server file system.

Question 11

A company is migrating an SAP NetWeaver system to AWS. The system consists of a central services instance, multiple application servers, and a database. The company wants to ensure that the SAP application servers can automatically recover from an EC2 instance failure without manual intervention. The company also wants to minimize downtime. Which TWO actions should be taken to meet these requirements? (Choose two.)

Accepted Answer

Configure an Auto Scaling group for the SAP application servers with a launch template that includes the SAP application server installation, and set the desired capacity to the required number of instances.. To automatically recover SAP application servers from EC2 instance failure, an Auto Scaling group with a proper launch template ensures failed instances are replaced. An Application Load Balancer with health checks ensures traffic is only sent to healthy instances, minimizing downtime. Other options do not provide automatic instance replacement or traffic redirection.

Answer

Enable detailed monitoring on the EC2 instances and create a CloudWatch alarm that triggers an AWS Lambda function to reboot the instance upon failure.

Answer

Configure the application servers to use Amazon EFS for shared storage, and enable EFS replication to another Availability Zone.

Answer

Place the application servers in a cluster placement group to ensure low latency and automatic failover.

Question 12

An SAP HANA database runs on an Amazon EC2 instance with multiple Amazon EBS volumes. The database administrator needs to ensure that the data and log volumes are configured for maximum performance and durability. The volumes are currently using gp3. Which change should be made to meet SAP HANA performance requirements?

Accepted Answer

Change the data volume to io2 Block Express with a higher IOPS provisioned. SAP HANA requires storage with high IOPS and low latency. Amazon EBS io2 Block Express volumes are designed for such demanding workloads, offering up to 256,000 IOPS and sub-millisecond latency. gp3 volumes, while cost-effective, are limited to 16,000 IOPS and may not meet SAP HANA performance requirements. Therefore, migrating the data volume to io2 Block Express is the correct action. Other options either do not apply to gp3 or do not provide the necessary performance.

Answer

Attach multiple gp3 volumes in a RAID 0 configuration

Answer

Increase the size of the gp3 volumes to 16 TiB to improve IOPS

Answer

Enable EBS Multi-Attach on the gp3 volumes to allow concurrent access

Question 13

An SAP HANA database on AWS is configured with a primary instance in Availability Zone A and a secondary instance in Availability Zone B using SAP HANA system replication in sync mode. The company wants to ensure that the secondary instance can take over with minimal data loss if the primary fails. Which additional configuration is required to allow the secondary to accept connections after takeover?

Accepted Answer

Configure a virtual IP address that can be moved between the primary and secondary instances.. After a SAP HANA system replication takeover, clients must be redirected to the new primary. A virtual IP address or load balancer endpoint that can be moved between instances ensures clients reconnect without manual reconfiguration. This is a standard requirement for SAP HANA HA on AWS, often managed by a cluster manager. Other options do not provide the necessary client redirection or are not supported.

Answer

Enable multi-tier system replication with a third instance in a different region.

Answer

Configure the secondary instance to use the same hostname as the primary instance.

Answer

Set up an Amazon Route 53 private hosted zone with a failover routing policy.

Question 14

A company is deploying SAP S/4HANA on AWS and needs to ensure that the SAP HANA database and the SAP application servers can communicate over the network with low latency and high throughput. The SAP HANA database runs on an Amazon EC2 instance in a private subnet, and the application servers run on separate EC2 instances in the same VPC. The network architect must choose an EC2 instance type and configuration that provides the required network performance. Which combination of instance attributes should the architect select?

Accepted Answer

EC2 instances with high single-flow bandwidth and Elastic Network Adapter (ENA) enabled, placed in a cluster placement group.. The correct answer is to use EC2 instances with ENA enabled and place them in a cluster placement group. ENA provides high bandwidth and low latency, which is essential for SAP HANA communication. A cluster placement group packs instances closely within a single Availability Zone, minimizing network hops and maximizing throughput. This combination ensures the required network performance for SAP S/4HANA.

Answer

EC2 instances with Elastic Fabric Adapter (EFA) enabled, placed in a spread placement group.

Answer

EC2 instances with Elastic Network Adapter (ENA) enabled, placed in a spread placement group.

Answer

EC2 instances with enhanced networking using Intel 82599 VF, placed in a partition placement group.

Question 15

A company is migrating an SAP S/4HANA system to AWS. The system uses SAP HANA System Replication (HSR) for high availability across two Availability Zones. The company wants to ensure that the replication traffic is encrypted and that the secondary site can be promoted quickly in case of a failure. Which configuration should the company implement?

Accepted Answer

Configure HSR in sync mode with TLS encryption, and use an overlay IP address for the secondary site that can be moved during failover.. HSR in sync mode ensures zero data loss by requiring the secondary to acknowledge before the primary commits. TLS encryption secures the replication traffic between sites. Using an overlay IP address allows for quick client reconnection to the promoted secondary site, minimizing downtime. This combination meets the requirements for encryption and fast failover.

Answer

Configure HSR in async mode without encryption, and use AWS Global Accelerator to provide a static anycast IP for client connections.

Answer

Configure HSR in async mode with TLS encryption, and use Amazon Route 53 with a failover routing policy to redirect clients to the secondary site.

Answer

Configure HSR in sync mode without encryption, and use an AWS Network Load Balancer to distribute connections to both sites simultaneously.