C_CPE_2409 SAP Certified Associate - Backend Developer - SAP Cloud Application Programming Model Questions and Answers

In CAP:

destinations.json (A):

Used during local development to define destinations mapped to external services. CAP automatically loads these destinations when running locally.

package.json (D):

Contains the requires section where CAP services declare dependencies on external services. This indicates how the destination should be consumed by CAP runtime (e.g., which kind of service is required and where to get credentials).

Incorrect options:

B – manifest.json: Not used in CAP backend runtime.

C – services.xml: Not part of CAP configuration.

For Node.js/TypeScript development with frameworks like NestJS, the environment supports:

Automatic rebuild (A): Tools like ts-node-dev or the Nest CLI recompile TypeScript on file changes.

Debug JavaScript/TypeScript with breakpoints (D): Visual Studio Code supports debugging Node.js applications and stopping on breakpoints.

Incorrect options:

B: Debugging Java applications requires JVM and Java tooling, not applicable to NestJS.

C: Auto-redeploy implies container or platform redeployment; local development normally only rebuilds and restarts, not redeploys.

The Kyma project (used in SAP BTP, Kyma runtime) is an extension framework that provides modular building blocks to extend applications using Kubernetes-native components. The official Kyma module list includes:

Serverless (A): Provides functions-as-a-service capabilities, enabling lightweight event-driven workloads.

Telemetry (C): Offers logging, metrics, and tracing capabilities enhancing observability.

API Gateway (E): Enables secure and managed exposure of APIs, including authentication and routing.

Incorrect options:

B – Data Warehouse: Not a Kyma module.

D – Storage: Storage is a Kubernetes concept, not a Kyma module.

Side-by-side extensions run on SAP BTP, which is:

A – Distributed

BTP is a distributed cloud platform across:

Multiple data centers

Multiple hyperscalers

Multiple regions

Workloads run across distributed nodes and services.

B – Autonomous

Extensions operateindependentlyfrom SAP S/4HANA Cloud core.

They are:

Independently deployable

Independently versioned

Not impacted by S/4HANA upgrades

Running in isolated environments

Why C and D Are Incorrect:

C – Centralized:

Side-by-side extensibility isnotcentralized; it is explicitly distributed.

D – Heterogenic:

Extensions can run in heterogenous landscapes, but this is not the defining characteristic recognized in SAP extensibility models.

SAP BTP Cloud Foundry runtime is amanaged PaaS platform.

B – Managed security and automatic updates

The platform handles:

Operating system patching

Buildpack updates

Security vulnerability patches

Scaling and monitoring infrastructure

Developers do not manage OS, VM, clusters, or security baselines.

C – High availability with load balancing

Cloud Foundry natively provides:

Multiple application instances

Route-based load balancing

Health checks

Automatic restart of unhealthy instances

This ensureshigh availabilityfor deployed apps.

Why the Others Are Incorrect:

A:Scaling isautomatic, not manual. Developers can set autoscaling rules.

D:Service mesh is not part of Cloud Foundry; it belongs to Kubernetes-based runtimes (e.g., Kyma).

Comprehensive and Detailed Explanation

SAP BTP Cloud Foundry runtime is aPlatform-as-a-Service (PaaS)that provides:

Fully managed multi-language runtimes (Node.js, Java, Python, Go)

Buildpacks to build container images

Autoscaling and health management

Route-based load balancing

Secure isolation of application environments

Service binding for XSUAA, Destinations, HANA Cloud, etc.

Its primary purpose is to runcloud-native, 12-factor applications.

Why the Other Options Are Incorrect:

A:S/4 configuration is done via SAP GUI/Fiori, not Cloud Foundry.

C:HANA databases are managed through SAP HANA Cloud administration tools, not Cloud Foundry.

D:Integrations use SAP Integration Suite or API Management, not Cloud Foundry runtime.

In Cloud Foundry, when you deploy an application with cf push (without a pre-built container image), the platform runs astaging phase. During staging:

Abuildpackinspects the application, detects the runtime (for example, Node.js, Java, Python), anddownloads required dependencies.

It then produces adroplet, which is the runnable artifact containing the application and its runtime environment. This droplet is conceptually similar to acontainer imagethat is later executed by the platform.

Therefore, the role of the buildpack is best summarized as:

It builds the runtime image for applications during staging.

This matches optionD – It builds a container image for applications during staging.

Why the others are incorrect:

A – Binds services to applications:Service binding is managed by the Cloud Foundry platform (cf bind-service and environment variables), not by buildpacks.

B – User roles and permissions:Roles and permissions are handled by UAA/XSUAA and platform role assignments, not by buildpacks.

C – Database manager:Databases are provisioned as services; buildpacks do not manage database servers.

TheSAP Cloud SDKis designed to simplify and standardize buildingside-by-side extensions(primarily in Java and JavaScript/TypeScript) for SAP S/4HANA and other SAP solutions.

Typical use cases described in the SDK documentation and training are:

Advanced features such as resilience and caching (B):The SDK providesresilience libraries(circuit breakers, retries, timeouts) andcaching mechanismsaround outbound calls to SAP S/4HANA. This allows backend developers to implement robustness and performance patterns without building them from scratch.

Add new features to an existing Java application (C):There are project templates and libraries forJava (Spring Boot). You can integrate the SDK into an existing Java application to call SAP S/4HANA APIs using the VDM and benefit from resilience, logging, and multitenancy support.

Why the other options are incorrect:

A – Allow key users to create fields:This relates toin-app extensibility (key-user extensibility)within SAP S/4HANA (for example, Custom Fields and Logic), not SAP Cloud SDK.

D – Build extensions using .NET:Officially supported runtimes for SAP Cloud SDK areJavaandJavaScript/TypeScript, not .NET.

The SAP S/4HANA Virtual Data Model (VDM) provides:

Documented relationships between business entities (A):

The VDM contains associations, cardinalities, and links between entities, exposing the business domain structure.

Business semantics (D):

VDM entities are semantically rich views exposing fields, labels, and business meaning rather than technical database fields.

Incorrect options:

B: The VDM abstracts the database; it does not expose underlying tables.

C: The VDM does not provide UIs; it provides API-level views.

Comprehensive and Detailed Explanation

To call on-premise systems (e.g., ECC, on-prem S/4HANA, custom OData services), CAP requires:

D – Cloud Connector

The Cloud Connector creates asecure tunnelbetween SAP BTP and the on-prem network.

It maps internal systems and resources (paths, ports) to virtual on-demand resources that BTP can access.

Without Cloud Connector, BTP services cannot reach the on-prem landscape.

B – Destination Service

CAP applications rely onDestinationsto configure:

Hostnames and URLs

Proxy types (onPremise)

Authentication mechanisms

SAP Cloud Connector location IDs

System routing metadata

Outbound CAP service calls use destination configuration to find the on-premise endpoint.

Why the Other Options Are Incorrect:

A – API Management:

Useful for external API governance but not mandatory for on-premise connectivity.

C – Event Mesh:

Used for event-driven communication, not direct connectivity to legacy/on-prem services.

Comprehensive and Detailed Explanation

SAP Gardeneris an open-source project used by SAP BTP Kyma runtime as thecluster management layer.

Key responsibilities include:

Provisioning Kubernetes clusters on different hyperscalers

Managing lifecycle operations (creation, upgrade, repair)

Standardizing Kubernetes across cloud providers

Ensuring SLA-grade operations and reliability

Monitoring and auto-healing clusters

Kyma runtime runson top of Gardener-managed Kubernetes clusters, enabling SAP to deliver a fully managed Kubernetes experience.

Why the Other Options Are Incorrect:

A:Applications are deployed by the developer or CI/CD pipeline, not Gardener.

B:Subaccounts and instances belong to BTP cockpit—not Gardener.

Side-by-side extensibility is the recommended extensibility model for SAP S/4HANA Cloud when building advanced, decoupled, and scalable extensions. It allows developers to build and run applicationsoutsidethe S/4HANA core using SAP BTP services.

Correct Options Explained:

B – Integration with cloud and non-cloud solutions

Side-by-side extensions run on SAP BTP, which includesIntegration Suite,API Management,Event Mesh, and connectivity services.

This enables:

Integration withSAP SaaS systems(SuccessFactors, Ariba, SAP S/4HANA Cloud).

Integration withon-premise systemsvia Cloud Connector.

Communication withthird-party and non-SAP systems.

Thus, B is correct.

C – Uses a complete development platform

SAP BTP provides:

Multiple runtimes (Cloud Foundry, Kyma/Kubernetes, ABAP environment).

Database and storage options (SAP HANA Cloud, document stores).

Security, authorization, and multi-tenancy capabilities.

DevOps support (CI/CD, transport management).

Language runtimes (Java, Node.js, CAP, Python, etc.)

This makes SAP BTP afull development and operations platform, supporting the building and hosting of side-by-side extensions.

D – Support for hybrid scenarios

Side-by-side extensibility supports hybrid architectures by enabling:

Connectivity betweencloud and on-premise systems.

Event-driven integration between systems deployed across different landscapes.

APIs and events from both cloud and on-prem to be consumed and extended.

Thus, D is correct.

Why A is Incorrect:

Side-by-side extensionsdo not run in the same software stackas SAP S/4HANA.

They runoutsidethe S/4HANA core on SAP BTP, ensuring:

Loose coupling

Upgrade stability

Clean core compliance

cds add xsuaa adds authentication and authorization support to CAP applications. It updates:

package.json (C):Adds dependencies and configuration entries for XSUAA integration.

xs-security.json (D):Generates or updates the security descriptor defining scopes, role templates, attributes, etc.

Incorrect options:

A – .cdsrc.json:Not modified by this command.

B – xs-usertokens.json:Not used by CAP tooling.

In CAP Node.js projects, the .env file is used to store environment variables that influence application behavior at runtime, such as credentials, service endpoints, or configuration flags. It is automatically loaded by CAP during application startup.

CAP guidelines recommend using .env for environment-specific configuration that should not be hard-coded or committed directly into source files.

Incorrect options:

A: Version control settings are handled by Git configuration files.

B: UI settings belong to UI frameworks, not .env.

Comprehensive and Detailed Explanation

CAP supportsreal-time, event-driven architecturesusing:

D – Message Queues and Event Brokers

This includes:

SAP Event Mesh

Message brokers (AMQP, Kafka via integration adapters)

CAP domain events (emit, on)

Outbox pattern for guaranteed delivery

Event-driven communication between microservices

These features allow:

Loose coupling

Real-time synchronization

Trigger-based data propagation

Integration with SAP S/4HANA event channels

Handling asynchronous workloads

Why the Others Are Incorrect:

A:Database connectivity is synchronous and not event-based.

B:Service connectivity is request/response, not event-driven.

C:Service extensibility allows custom handlers, not messaging.