PAS-C01 Technology Practice Test 6 — 15 Questions

Question 1

Which TWO of the following are valid considerations when sizing an SAP HANA instance on AWS for a production environment? (Choose 2.)

Accepted Answer

Consider instance store volumes for temporary data and high I/O throughput. Instance store volumes provide very high I/O throughput and low latency, which is critical for SAP HANA's temporary data (e.g., /hana/tmp, /hana/log) and for redo log writes. They are ephemeral but offer the performance needed for production workloads, making this a valid sizing consideration.

Answer

Use EBS consistency groups for snapshot backups

Answer

Select an instance with at least 64 GB memory per HANA node

Answer

Use a single large EBS volume to simplify management

Question 2

A company is running a production SAP HANA database on an AWS EC2 instance with a single EBS gp3 volume. The database frequently experiences high write latency during peak hours. Which design change would MOST effectively reduce write latency?

Accepted Answer

Replace the single gp3 volume with multiple io2 Block Express volumes configured in a RAID 0 stripe.. Replacing a single gp3 volume with multiple io2 Block Express volumes in a RAID 0 stripe increases the available IOPS and reduces write latency by distributing write operations across multiple volumes in parallel. io2 Block Express volumes offer up to 256,000 IOPS per volume and sub-millisecond latency, which directly addresses the high write latency during peak hours. RAID 0 striping further aggregates the IOPS and throughput of multiple volumes, providing the performance needed for SAP HANA's demanding write workloads.

Answer

Increase the size of the existing gp3 volume to maximize its baseline throughput.

Answer

Migrate the database to a larger EC2 instance type with higher network bandwidth.

Answer

Move the SAP HANA database to Amazon RDS for SAP HANA.

Question 3

An SAP system administrator is troubleshooting a high CPU usage issue on an SAP application server (AS) running on an EC2 instance. The administrator suspects that a specific ABAP report is consuming excessive resources. Which AWS service can provide detailed CPU utilization metrics at the process level to confirm the suspicion?

Accepted Answer

Amazon CloudWatch agent with the 'procstat' plugin. The Amazon CloudWatch agent with the 'procstat' plugin can collect CPU and memory utilization metrics at the individual process level, including specific ABAP processes or reports by name or PID. This allows the administrator to confirm which ABAP report is causing high CPU usage on the EC2 instance running the SAP application server.

Answer

AWS CloudTrail

Answer

AWS Systems Manager Inventory

Answer

AWS Compute Optimizer

Question 4

A company is planning to migrate its SAP landscape to AWS. The SAP systems include a production system, a QA system, and a development system. All systems use the same SAP S/4HANA version. Which strategy is MOST cost-effective for the DR (disaster recovery) setup?

Accepted Answer

Use a pilot light strategy with AWS DMS ongoing replication.. For SAP systems where all environments use the same S/4HANA version, the most cost-effective DR approach is a pilot light strategy using AWS DMS ongoing replication. This minimizes costs by replicating only the data (e.g., via DMS) and keeping only essential infrastructure running (e.g., a small standby database) while leaving additional compute resources (application servers, etc.) off until failover. In contrast, cross-Region replication with reserved instances (Option B) incurs significant ongoing costs because reserved instances must be paid for upfront or over time even when not running, and the DR systems would need to be sized for peak capacity, leading to waste. Warm standby (Option A) and active-active (Option D) are more expensive due to the need for continuously running infrastructure or load balancing across regions. Therefore, pilot light with DMS is the most cost-effective for this scenario.

Answer

Set up warm standby in a second Region with a standby application server and database.

Answer

Use cross-Region replication with AWS reserved instances for the DR systems.

Answer

Deploy active-active SAP systems in two AWS Regions with Elastic Load Balancing.

Question 5

An SAP Basis team is implementing SAP HANA system replication across two AWS Availability Zones. The HANA primary instance uses Provisioned IOPS SSD (io2) EBS volumes. The secondary instance must be kept in sync with minimal data loss. Which networking configuration is required to ensure low-latency, high-throughput replication traffic between the instances?

Accepted Answer

Enable Enhanced Networking (ENA) on both instances.. The correct configuration is to enable Enhanced Networking (ENA) on both instances. ENA provides high throughput and low latency for SAP HANA replication traffic across Availability Zones. ClassicLink is deprecated, VPN adds unnecessary latency, and VPC peering is not needed between subnets already in the same VPC. Cluster placement groups cannot span Availability Zones.

Answer

Use ClassicLink to connect the instances.

Answer

Set up a VPN connection between the instances.

Answer

Configure VPC peering between the two subnets.

Question 6

A company runs SAP ERP on AWS with a Sybase ASE database. The database is on an EC2 instance with a single 500 GB gp2 EBS volume. The volume shows 100% credit balance consumption frequently, causing I/O throttling. What should the company do to resolve the throttling?

Accepted Answer

Migrate the volume to gp3 with appropriate IOPS and throughput settings.. The gp2 volume's credit balance is fully consumed because the workload's sustained I/O demand exceeds the baseline performance of 500 GB gp2 (1,500 IOPS). Migrating to gp3 (option B) eliminates the credit-bucket model entirely, providing a baseline of 3,000 IOPS and 125 MiB/s throughput regardless of volume size, with the ability to provision higher IOPS and throughput independently without relying on burst credits.

Answer

Increase the gp2 volume size to 1,000 GB to gain more I/O credits.

Answer

Enable EBS optimization on the EC2 instance.

Answer

Move the database to Amazon RDS for Sybase ASE.

Question 7

An SAP administrator needs to ensure that Amazon EBS snapshots of SAP HANA data volumes are crash-consistent. The HANA database is on a single EC2 instance with multiple EBS volumes. What is the correct approach?

Accepted Answer

Use AWS Backup with application-consistent snapshots using pre- and post-scripts.. AWS Backup with application-consistent snapshots uses pre- and post-scripts to quiesce the SAP HANA database, ensuring that all EBS volumes are captured in a crash-consistent state. This approach coordinates the snapshot process across multiple volumes without stopping the EC2 instance, maintaining data integrity for SAP HANA's data volumes.

Answer

Configure the volumes as a RAID 0 array and take a snapshot of the array.

Answer

Take snapshots of each volume individually while the instance is running.

Answer

Stop the EC2 instance, take snapshots of all volumes, then start the instance.

Question 8

A company is designing a network architecture for SAP S/4HANA on AWS. The architecture must support high availability by distributing application servers across two Availability Zones. Which AWS service can provide automatic failover for the SAP central services (ASCS) instance?

Accepted Answer

Amazon Route 53 with DNS failover routing. Amazon Route 53 with DNS failover routing is correct because SAP ASCS (ABAP SAP Central Services) requires a virtual hostname that clients use to connect. Route 53 can monitor the health of the ASCS instance in the primary Availability Zone and automatically update DNS resolution to point to the standby ASCS instance in the secondary Availability Zone when a failure is detected. This provides the automatic failover needed for SAP central services without requiring a shared IP address across zones.

Answer

AWS Direct Connect

Answer

Application Load Balancer (ALB)

Answer

Amazon CloudFront

Question 9

An SAP system running on AWS experiences a significant performance degradation after a patching activity. The SAP application (PAS) and database (HANA) run on separate EC2 instances. The network throughput between the two instances has dropped. What is the MOST likely cause?

Accepted Answer

The instances were moved out of a cluster placement group, reducing network throughput.. A cluster placement group provides low-latency, high-bandwidth network connectivity between instances by placing them in the same high-speed, non-blocking rack. Moving instances out of a cluster placement group removes this benefit, reducing network throughput between the SAP PAS and HANA instances, which directly causes performance degradation.

Answer

The EBS-optimization feature was disabled on the database instance.

Answer

The security group rules were modified during patching, restricting traffic.

Answer

The route tables were updated, causing traffic to traverse a NAT gateway.

Question 10

A company is migrating its SAP ERP system from on-premises to AWS. The migration involves a heterogeneous database migration from Oracle to SAP HANA. Which AWS service should be used to perform the database migration with minimal downtime?

Accepted Answer

AWS Database Migration Service (AWS DMS) with a heterogeneous migration using the SAP HANA target endpoint. AWS DMS supports heterogeneous migrations, including from Oracle to SAP HANA, by using built-in conversion capabilities or integrating with AWS SCT for schema transformation. This allows continuous data replication with minimal downtime, as DMS can perform ongoing changes from the source during the migration window.

Answer

AWS Schema Conversion Tool (AWS SCT)

Answer

AWS Server Migration Service (SMS)

Answer

AWS Database Migration Service (AWS DMS) with a homogeneous migration

Question 11

A company is deploying SAP S/4HANA on AWS and needs to choose a storage solution for the HANA data volume that provides high IOPS and low latency. Which TWO storage options are suitable? (Choose TWO.)

Accepted Answer

Amazon EC2 instance store (NVMe SSD). Amazon EC2 instance store (NVMe SSD) provides very high IOPS and ultra-low latency because it is physically attached to the host server, making it ideal for SAP HANA data volumes that require consistent, sub-millisecond performance. Amazon EBS io2 Block Express volumes deliver up to 256,000 IOPS per volume with single-digit millisecond latency and 99.999% durability, meeting SAP HANA's demanding storage performance requirements.

Answer

Amazon EBS gp2 volumes

Answer

Amazon Elastic File System (EFS)

Answer

Amazon S3

Question 12

An SAP administrator is configuring high availability for SAP HANA using HANA system replication (HSR) across multiple Availability Zones. The administrator must ensure that the replication traffic is encrypted and uses the most efficient network path. Which TWO configurations meet these requirements? (Choose TWO.)

Accepted Answer

Enable SAP HANA system replication with TLS/SSL encryption.. SAP HANA system replication (HSR) supports TLS/SSL encryption natively, which encrypts the replication traffic between the primary and secondary HANA instances. This ensures data confidentiality and integrity without requiring additional network infrastructure, and it uses the most efficient network path because the replication occurs directly over the existing network between the Availability Zones.

Answer

Store replication data in Amazon S3 and have the secondary instance pull it.

Answer

Use AWS Direct Connect to connect the Availability Zones.

Answer

Configure a VPN connection between the Availability Zones.

Question 13

A company is running an SAP NetWeaver system on AWS. The system includes a primary application server (PAS) and a dialog instance. The administrator wants to monitor the SAP system health using Amazon CloudWatch. Which THREE metrics should be monitored to proactively detect performance issues? (Choose THREE.)

Accepted Answer

EBS Volume Queue Length. EBS Volume Queue Length is a critical metric for SAP workloads because it directly indicates I/O latency. A high queue length means the storage subsystem cannot keep up with the SAP database or application server I/O requests, which can cause transaction delays and system hangs. Monitoring this metric allows proactive detection of storage bottlenecks before they impact SAP performance.

Answer

EC2 SwapUsage (as custom metric)

Answer

EC2 NetworkIn

Question 14

An SAP application running on AWS is experiencing high latency for database write operations. The system uses SAP ASE on Amazon EC2 with gp2 EBS volumes. Which change is most likely to improve write performance?

Accepted Answer

Migrate to io1/io2 EBS volumes with provisioned IOPS.. SAP ASE on Amazon EC2 with gp2 EBS volumes is experiencing high latency for database write operations. gp2 volumes use a burst-bucket model that can exhaust IOPS credits under sustained heavy writes, causing throttled performance. Migrating to io1 or io2 EBS volumes with provisioned IOPS guarantees consistent, low-latency write throughput, which directly addresses the bottleneck for database write workloads.

Answer

Move database write logs to Amazon S3 for better throughput.

Answer

Migrate to gp3 EBS volumes with higher baseline performance.

Answer

Use instance store volumes for database data files.

Question 15

A customer runs SAP HANA on an AWS Multi-AZ deployment with a primary and secondary instance. They want to ensure automatic failover in case of instance failure. What is the recommended approach?

Accepted Answer

Implement SAP HANA System Replication in a multi-AZ configuration with automatic failover using AWS services.. SAP HANA System Replication (HSR) in a multi-AZ configuration, combined with AWS services like Amazon Route 53 health checks and custom scripts for automatic failover, provides the recommended approach for ensuring automatic failover upon instance failure. HSR replicates data synchronously or asynchronously between primary and secondary HANA instances, and when integrated with AWS, you can automate the failover process without manual intervention, meeting the requirement for high availability.

Answer

Set up a Route 53 health check to redirect traffic to the secondary instance manually.

Answer

Use Amazon RDS for SAP HANA with Multi-AZ enabled.

Answer

Configure an Auto Scaling group with a lifecycle hook to launch a new HANA instance.