PAS-C01 Practice Test 29 — 15 Questions

Question 1

A company is experiencing performance issues with their SAP ERP system on AWS. The system is running on an r5.4xlarge EC2 instance with gp2 EBS volumes. The database is SAP HANA. CloudWatch metrics show high write latency on the data volume. Which change would most likely improve performance?

Accepted Answer

Change the volume type to io2 Block Express. io2 Block Express volumes provide higher IOPS and lower latency compared to gp2, suitable for SAP HANA.

Answer

Increase the size of the gp2 volume to get more baseline IOPS

Answer

Move the database to a t3.large instance

Answer

Enable EBS optimization on the instance

Question 2

A company is designing a highly available SAP HANA system on AWS. They need to replicate data synchronously to a secondary site in a different Availability Zone. Which AWS service should they use?

Accepted Answer

SAP HANA System Replication (HSR). Option B is correct because the SAP HANA System Replication (HSR) with synchronous replication is the standard approach for HA across AZs. Options A, C, and D are not SAP HANA replication mechanisms.

Answer

Amazon S3 cross-region replication

Answer

AWS Database Migration Service (DMS)

Answer

Amazon RDS Multi-AZ

Question 3

A company is migrating its SAP ERP system to AWS. The system includes an SAP Central Services (ASCS) instance and an SAP application server. Which TWO of the following are required for high availability? (Choose TWO.)

Accepted Answer

Enqueue replication server (ERS) must be set up for the ASCS cluster. Options A and D are required for HA. Option B is optional. Option C is for networking, not HA. Option E is for redundancy of application servers, but not a requirement for HA per se.

Answer

Use an EBS Multi-Attach volume for shared /sapmnt

Answer

Configure an Elastic Load Balancer for ASCS

Answer

Deploy at least two application servers in different Availability Zones

Question 4

A company runs SAP HANA on AWS. The system is experiencing high CPU utilization during peak hours. Which TWO actions should the administrator take to address this? (Choose two.)

Accepted Answer

Right-size the EC2 instance to a larger type with more vCPUs.. Option B and Option D are correct because right-sizing the instance (B) and implementing HANA workload management (D) directly address CPU utilization. Option A is wrong because disabling compression increases CPU for decompression. Option C is wrong because increasing EBS volume size does not affect CPU. Option E is wrong because reducing network throughput may impact performance.

Answer

Disable HANA columnar compression to reduce CPU overhead.

Answer

Increase the size of the /hana/data EBS volumes.

Answer

Reduce the network throughput of the EC2 instance.

Question 5

A company is running SAP Business Suite on AWS. The SAP application servers are behind an Application Load Balancer (ALB). Users are experiencing session timeouts because the ALB is distributing requests to different application servers. What should the company configure on the ALB to maintain session stickiness?

Accepted Answer

Enable sticky sessions using the ALB-generated cookie.. Option C is correct because Application Load Balancers support sticky sessions using cookies (either application-generated or AWS-generated). This ensures that a user's requests are sent to the same target group member. Option A is incorrect because path-based routing is for routing requests based on URL path, not for session stickiness. Option B is incorrect because cross-zone load balancing distributes traffic across all zones, but does not ensure stickiness. Option D is incorrect because a Network Load Balancer does not natively support sticky sessions for SAP.

Answer

Use a Network Load Balancer instead of an Application Load Balancer.

Answer

Enable cross-zone load balancing on the ALB.

Answer

Enable path-based routing to route all requests from a user to the same server.

Question 6

An SAP administrator is troubleshooting a performance issue on an SAP HANA instance running on an EC2 instance. The instance type is r5.8xlarge with 256 GB of RAM. The administrator notices that the instance's CPU credit balance is depleting rapidly. What is the most likely cause?

Accepted Answer

The instance is a burstable performance instance (e.g., T3) not an r5. Option A is correct because r5 instances are not burstable performance instances; they have dedicated vCPUs and do not use CPU credits. The depletion indicates the instance is not an r5 but possibly a T3 instance. Option B and D are not related to CPU credits. Option C is a misunderstanding.

Answer

The instance is using EBS-optimized with insufficient bandwidth

Answer

The SAP application is using too much memory

Answer

The instance has a high network throughput causing CPU overhead

Question 7

An SAP Basis administrator is troubleshooting a performance issue on an SAP HANA database running on an EC2 instance. The administrator notices that the 'hdbcons' command shows high 'wait time' for 'disk I/O' operations. The instance is an r5.4xlarge with 500 GB of gp2 EBS volumes for /hana/data and /hana/log. Which of the following is the MOST effective action to improve disk I/O performance?

Accepted Answer

Change the EBS volume type from gp2 to gp3 with higher IOPS and throughput.. Option C is correct because converting gp2 volumes to gp3 provides higher baseline IOPS and throughput without additional cost for provisioned IOPS. Option A is wrong because disabling HANA's delta merge increases fragmentation, worsening performance. Option B is wrong because increasing EBS snapshot frequency does not affect I/O performance. Option D is wrong because using a larger instance type addresses compute, not disk I/O.

Answer

Increase the frequency of EBS snapshots to offload I/O.

Answer

Upgrade to a larger EC2 instance type with more CPU and memory.

Answer

Disable the HANA delta merge operation to reduce I/O load.

Question 8

A company is designing a disaster recovery solution for SAP HANA on AWS using HANA System Replication. The primary site is in us-east-1 and the DR site is in us-west-2. Which TWO components are required to enable replication across Regions? (Choose two.)

Accepted Answer

AWS Site-to-Site VPN or AWS Direct Connect between the two Regions. Option B and Option D are correct: A VPN or Direct Connect (B) provides network connectivity, and EBS snapshots (D) can be used to replicate data if synchronous replication is not feasible. Option A is wrong because S3 Transfer Acceleration is not needed. Option C is wrong because VPC peering does not work across Regions (use Transit Gateway or VPN). Option E is wrong because AWS Global Accelerator improves latency but is not required.

Answer

VPC peering between the two VPCs

Answer

AWS Global Accelerator

Answer

Amazon S3 Transfer Acceleration

Question 9

A company is running SAP ERP on AWS. The SAP application servers are in private subnets, and the database is in a separate private subnet. The company needs to allow the application servers to communicate with the database. Which AWS networking component should be configured to allow this traffic?

Accepted Answer

Security Group rules allowing traffic between the security groups.. Option B is correct because Security Groups act as a virtual firewall for EC2 instances, and adding a rule to the database security group that allows inbound traffic from the application server security group is the recommended way to control traffic between instances. Option A is incorrect because an Internet Gateway is for internet access. Option C is incorrect because a Network ACL is stateless and more complex to manage. Option D is incorrect because VPC Peering is for connecting different VPCs.

Answer

VPC Peering connection between subnets.

Answer

Internet Gateway

Answer

Network ACL with inbound rules for the database subnet.

Question 10

An SAP system on AWS has an SAP Central Services (ASCS) instance running on an EC2 instance. The solution must ensure high availability for the ASCS in case of an EC2 failure. The ASCS uses a shared file system for the /sapmnt and /usr/sap/trans directories. Which architecture meets the high availability requirement with the least administrative overhead?

Accepted Answer

Use Amazon EFS for /sapmnt and /usr/sap/trans, and configure a Pacemaker cluster across two Availability Zones. Option A is correct because a Pacemaker cluster with Amazon EFS provides a fully managed NFS file system that is highly available and eliminates the need for a separate shared storage cluster. Option B is wrong because EBS fails over with the instance but is not shared. Option C is wrong because S3 is not a POSIX-compliant file system. Option D is wrong because it adds complexity with an additional EC2 instance for NFS.

Answer

Deploy a second ASCS instance in another AZ and use an EC2 instance running NFS server with an EBS volume

Answer

Use an Amazon EBS volume attached to the ASCS instance and replicate it to another Availability Zone using EBS Snapshots

Answer

Use Amazon S3 and mount it using s3fs-fuse for the shared file system

Question 11

Refer to the exhibit. An SAP administrator created this IAM policy for an SAP application user that performs database backups to Amazon S3. The user reports that backup jobs fail with an access denied error. What is the most likely cause?

Accepted Answer

The policy is missing s3:ListBucket permission on the bucket.. Option B is correct because the Deny statement denies s3:DeleteObject when SecureTransport is false, but the user may be using HTTPS (SecureTransport true), which is fine. However, the error is likely due to missing s3:ListBucket permission to list objects in the bucket. Option A is wrong because the policy allows PutObject. Option C is wrong because the Deny condition only applies when SecureTransport is false. Option D is wrong because the Allow statement exists.

Answer

The policy has a syntax error and is invalid.

Answer

The policy does not allow s3:PutObject for the bucket.

Answer

The Deny statement blocks all DeleteObject requests.

Question 12

A company has deployed SAP S/4HANA on AWS using a single EC2 instance for the HANA database and multiple EC2 instances for the application servers. The system is in production and the company wants to implement high availability for the HANA database to minimize downtime during patching and failures. The HANA database is critical and must have an RTO of less than 5 minutes and an RPO of zero. The current setup uses a single EBS volume for /hana/data and another for /hana/log. The company has two Availability Zones available. Which solution meets the requirements?

Accepted Answer

Configure SAP HANA System Replication with automatic failover to a secondary HANA instance in another AZ.. Option B is correct because SAP HANA System Replication in active/passive mode with automatic failover provides near-zero RPO and fast RTO. Option A is wrong because manual failover takes longer than 5 minutes. Option C is wrong because EBS Multi-Attach does not support active/passive cross-AZ. Option D is wrong because a larger instance does not provide HA.

Answer

Attach the EBS volumes to two EC2 instances using EBS Multi-Attach.

Answer

Use AWS Backup to schedule snapshots every 5 minutes and restore in another AZ if needed.

Answer

Deploy the HANA database on a larger EC2 instance with higher availability SLA.

Question 13

A company is designing a backup strategy for SAP HANA on AWS. The HANA database is 2 TB in size. The company requires daily full backups and hourly incremental backups. Which AWS service should be used to store the backups cost-effectively with high durability?

Accepted Answer

Amazon S3 with lifecycle policies to transition to Glacier.. Option A is correct because Amazon S3 provides 99.999999999% durability and is cost-effective for storing backups. S3 lifecycle policies can move older backups to Glacier for further cost savings. Option B is incorrect because Amazon EBS Snapshots are stored in S3 but are more expensive for long-term retention. Option C is incorrect because Amazon EFS is a file system, not optimized for backup storage. Option D is incorrect because AWS Storage Gateway is for on-premises integration.

Answer

Amazon EBS Snapshots stored in Amazon S3.

Answer

AWS Storage Gateway with volume gateway.

Answer

Amazon EFS for shared backup storage.

Question 14

An SAP system is experiencing performance issues during peak hours. The SAP application servers are running on EC2 instances behind a Network Load Balancer (NLB). The NLB is configured to use cross-zone load balancing. The issue is that one application server receives significantly more traffic than others. What is the most likely cause?

Accepted Answer

The flow hash algorithm is causing an uneven distribution of client traffic. Option D is correct because NLB distributes traffic based on flow hash, which can lead to uneven distribution, especially with fewer flows. Option A is wrong because NLB does not use round-robin. Option B is wrong because NLB does not have a health check that would skew traffic. Option C is wrong because NLB distributes traffic regardless of instance size.

Answer

The application servers have different instance sizes, causing the NLB to send more traffic to larger instances

Answer

The NLB is using round-robin algorithm and one server is slower

Answer

The health check is failing on the other servers

Question 15

An SAP administrator needs to set up a fault-tolerant architecture for SAP NetWeaver on AWS. The architecture must survive an entire Availability Zone failure. Which configuration is the most appropriate?

Accepted Answer

Use an Auto Scaling group to launch SAP application servers across multiple AZs behind an Application Load Balancer.. Option D is correct because an Auto Scaling group across multiple AZs with a load balancer provides fault tolerance for application servers. Option A is wrong because a single AZ does not survive AZ failure. Option B is wrong because EC2 without ASG lacks automatic recovery. Option C is wrong because a single EC2 instance with EBS snapshots is not highly available.

Answer

Deploy all SAP application servers in one Availability Zone and use Amazon EBS snapshots for backup.

Answer

Deploy SAP application servers across multiple AZs but without a load balancer.

Answer

Use a single large EC2 instance for all SAP components.