S2000-020 sample questions

Question 1

A financial services company is designing a multi-region disaster recovery solution for their critical applications running on both AIX and IBM i within Power Virtual Server. The AIX environment uses PowerHA SystemMirror, and the IBM i environment uses a third-party logical replication tool. They require a unified, private network backbone to connect their primary site in Dallas (DAL) with their DR site in Frankfurt (FRA). Which networking services should be combined to achieve this goal? (Select TWO)

Accepted Answer

IBM Cloud Transit Gateway

Accepted Answer

Direct Link

Answer

VPC Subnet Peering

Answer

IBM Cloud Internet Services (CIS)

Answer

Site-to-Site VPN Gateway

Question 2

An architect is tuning an Oracle database workload on a POWER10-based Power Virtual Server instance. The workload is characterized by a high number of concurrent, short-lived transactions. To maximize throughput, the architect needs to select the optimal Simultaneous Multi-Threading (SMT) mode. How does the POWER10 processor's SMT implementation differ from POWER9, and which mode is generally recommended for this type of workload?

Accepted Answer

POWER10 cores can execute instructions from two SMT4 threads simultaneously, unlike POWER9. For high-concurrency transactional workloads, SMT8 provides the best core utilization.

Answer

POWER10 introduces dynamic SMT mode switching, which automatically adjusts from SMT2 to SMT8 based on workload; SMT8 is optimal.

Answer

POWER10 removes SMT2 mode and focuses on SMT4 and SMT8. For database workloads, SMT4 is always preferred to provide more resources per thread.

Answer

POWER10's primary change is increased cache size, which has no direct impact on SMT mode choice. SMT2 should be used to minimize context switching overhead for databases.

Question 3

A solutions architect is deploying a new SAP HANA instance on Power Virtual Server. The SAP sizing guidelines specify a requirement for data volumes to sustain at least 15,000 IOPS with sub-5ms latency during peak processing. The client also requires the ability to create near-instantaneous, space-efficient copies of the data volumes for testing purposes. Which storage tier and feature combination in Power Virtual Server meets these requirements?

Accepted Answer

Tier 1 (NVMe) storage with Snapshots.

Answer

Tier 3 (General Purpose) storage with Volume Cloning.

Answer

Tier 1 (NVMe) storage with IBM Cloud Object Storage replication.

Answer

Tier 3 (General Purpose) storage with Global Mirror.

Question 4

**Company Background:**
Global Retail Inc. runs its mission-critical SAP ERP Central Component (ECC) system on-premises on an aging IBM Power7 server with AIX 7.1. The company is facing high maintenance costs and lacks disaster recovery capabilities. They plan to migrate to SAP S/4HANA and have chosen IBM Power Virtual Server as their target platform to leverage their existing AIX skills and ensure high performance for the in-memory database.

**Current Situation:**
The on-premises environment consists of a large 10TB Oracle database and multiple application servers. The migration plan involves a two-step process: first, a lift-and-shift of the existing ECC environment to PowerVS for stabilization, and second, a subsequent project to upgrade to S/4HANA. The company has a 1 Gbps Direct Link connection to the IBM Cloud data center in Washington D.C.

**Requirements:**
1. The initial lift-and-shift migration must be completed with a maximum downtime of 8 hours.
2. The target PowerVS environment must provide isolated networking for production, non-production, and management traffic.
3. The storage solution for the database must support high IOPS and low latency.
4. A disaster recovery site must be established in another region with an RPO of less than 15 minutes.

Which proposed solution best meets all the stated requirements?

Accepted Answer

Perform a logical database migration (export/import) over the Direct Link. Deploy separate private subnets for production and non-production. Use Tier 1 storage for the database. Use VM Recovery Manager DR for cross-region replication.

Answer

Use IBM Cloud Mass Data Migration to ship the 10TB database. Deploy all servers on a single private subnet. Use Tier 3 storage for cost savings. Implement backup to IBM Cloud Object Storage for DR.

Answer

Use PowerVC to capture the on-premises LPARs and import them into PowerVS. Use public IPs for all servers for simplicity. Use Tier 1 storage. Implement PowerHA SystemMirror for DR between regions.

Answer

Replicate the database using native Oracle Data Guard over the Direct Link. Connect all servers to the public network and use Security Groups for isolation. Use Tier 3 storage. Use periodic snapshots for DR.

Question 5

An administrator is troubleshooting a network connectivity issue where a Power Virtual Server instance cannot communicate with an on-premises server over a Direct Link Connect connection. The PowerVS instance and the on-premises server are on different subnets. The Direct Link is showing as 'UP' in the IBM Cloud portal. What is the most likely cause of this issue?

Accepted Answer

The on-premises router has not received the route for the PowerVS subnet via the BGP session.

Answer

The MTU size on the PowerVS network interface is mismatched with the on-premises network.

Answer

The security group attached to the PowerVS instance is blocking inbound traffic from the on-premises subnet.

Answer

The PowerVS instance was deployed with only a public network interface and no private interface.

Question 6

True or False: When running an Oracle database on a Power Virtual Server instance with a shared processor pool, Oracle licensing must be based on the total number of physical cores in the entire server frame, regardless of the LPAR's entitled capacity.

Accepted Answer

False

Answer

True

Question 7

A company needs to migrate a 5TB AIX database from their on-premises Power8 server to a Power Virtual Server instance. The primary business requirement is to minimize application downtime to less than one hour. The company has a 10 Gbps Direct Link connection. Which migration method is most suitable to meet this downtime requirement?

Accepted Answer

Setting up a new PowerVS instance and using AIX logical volume mirroring (LVM mirroring) combined with a data replication tool over the Direct Link.

Answer

Using mksysb to create a full system backup, transferring it to IBM Cloud Object Storage, and restoring it to a new PowerVS instance.

Answer

Using IBM Cloud Mass Data Migration service to ship the physical disks to the IBM Cloud data center.

Answer

Using PowerVC to capture an image of the on-premises LPAR and deploying it from the image catalog in PowerVS.

Question 8

An administrator is deciding between a shared and a dedicated processor pool for a new Power Virtual Server instance that will run a performance-sensitive, licensed software product. The software license is tied to the number of processor cores. What is the primary trade-off between using a shared uncapped processor pool versus a dedicated processor pool in this scenario?

```mermaid
graph TD
subgraph On-Premises
App[Licensed App]
end

subgraph PowerVS
A[Shared Pool LPAR]
B[Dedicated Pool LPAR]
end

App -->|Migrate to| A
App -->|Migrate to| B

A -- "Cost vs Performance" --> C{Decision}
B -- "Cost vs Performance" --> C
```

Accepted Answer

Shared pool offers lower cost and the ability to burst above entitled capacity, but provides inconsistent performance. Dedicated pool guarantees performance but is more expensive.

Answer

Shared pool requires licensing the entire physical server, while dedicated pool allows sub-capacity licensing.

Answer

Shared pool does not support Live Partition Mobility (LPM), while dedicated pool does.

Answer

Shared pool is only available for Linux workloads, while dedicated pool is required for AIX and IBM i.

Question 9

When deploying a high-availability solution for an AIX application using PowerHA SystemMirror across two Power Virtual Server instances in the same data center, what is a critical network configuration requirement for the cluster heartbeat?

Accepted Answer

A dedicated private subnet must be configured for the heartbeat traffic, separate from the service and data replication networks.

Answer

The heartbeat network must be configured on a public subnet to ensure reachability.

Answer

All cluster communication, including heartbeat, must be routed through an IBM Cloud Transit Gateway.

Answer

The heartbeat must use the same network interface as the primary service IP address.

Question 10

A security administrator is tasked with hardening a new IBM i instance on Power Virtual Server to meet corporate compliance standards. The standards require data-at-rest encryption using company-managed keys and strict network access control. Which IBM Cloud services must be configured to meet these requirements? (Select TWO)

Accepted Answer

IBM Key Protect

Accepted Answer

An operating system-level firewall on the IBM i instance

Answer

IBM Cloud Security Groups

Answer

IBM Cloud Activity Tracker

Answer

IBM Cloud Certificate Manager

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Free S2000-020 sample questions

True or False: When running an Oracle database on a Power Virtual Server instance with a shared processor pool, Oracle licensing must be based on the total number of physical cores in the entire server frame, regardless of the LPAR's entitled capacity.

When deploying a high-availability solution for an AIX application using PowerHA SystemMirror across two Power Virtual Server instances in the same data center, what is a critical network configuration requirement for the cluster heartbeat?

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