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

In SAP CI/CD service, low-code project pipelines (e.g., SAP Build Apps or SAP Build Work Zone content) can release artifacts by:

Deploying to Cloud Foundry (B):The pipeline packages and deploys artifacts to the Cloud Foundry runtime.

Deploying to Cloud Transport Management Service (C):Used for landscape-aware transport of application modules.

Incorrect options:

A:Private server deployment is not supported by SAP CI/CD predefined pipelines.

D:FTP uploads are not part of SAP CI/CD Release stage capabilities.

CAP development guidelines recommendSQLiteas the default database for local development because:

It requires no installation.

It supports CDS features needed for rapid prototyping.

It enables quick testing without deploying to SAP HANA.

For productive deployments, SAP HANA or SAP HANA Cloud is used, but SQLite remains the recommended local option.

Incorrect choices:

A – NoSQL:CAP does not support NoSQL databases as primary stores.

C – PostgreSQL:Supported via adapters, butnotthe recommended development default.

D – HANA Cloud:Used for production, not recommended for local development.

Comprehensive and Detailed Explanation

Side-by-side extensions on SAP BTP Cloud Foundry rely onpolyglot runtimessuch as:

B – Java

Supported via:

Java buildpack

Spring Boot

SAP Cloud SDK for Java

CAP Java runtime

Java is fully supported for enterprise-grade SAP extensions.

C – Node.js

Supported via:

Node.js buildpack

CAP Node.js runtime

Custom Express/NestJS services

Event-driven and REST APIs

Node.js is widely used for CAP services and cloud-native extensions.

Why the Others Are Incorrect:

A – ABAP:

ABAP extensibility is supported viaSAP BTP ABAP Environment, not Cloud Foundry.

D – ActionScript:

Obsolete language; not supported by SAP BTP.

CAP supports integration with external services using multiple API definition formats.

D – EDMX for OData V2 and V4

CAP can import OData services using:

EDMX files (OData V2/V4)

Metadata downloaded from SAP Business Accelerator Hub

cds import

This generates CDS definitions for entities, actions, and functions.

B – OpenAPI (Swagger)

For REST services, CAP supports:

Importing OpenAPI specifications

Generating CDS service proxies

Creating typed service clients

OpenAPI is the standard way to describe REST endpoints in CAP.

Why the Others Are Incorrect:

A – GraphQL schema

CAP does not directly import GraphQL schemas.

C – WSDL

WSDL (SOAP) is not directly consumed by CAP modeling tools.

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.

CAP natively supports consumption of external services using:

C – OData

CAP provides:

OData service proxies

EDMX import

Automatic CDS generation

OData V2/V4 support

Query transformation & protocol handling

OData is the primary protocol for SAP S/4HANA APIs.

D – REST

CAP supports:

OpenAPI import

REST clients via CAP service proxies

Typed request/response handling

Destination-based outbound REST calls

Why the Others Are Incorrect:

A – WebSockets:

CAP does not provide native WebSocket consumption APIs.

B – SOAP:

SOAP is not supported directly; integrations require external libraries or wrappers.

In OData, theservice metadata document(typically accessed via the $metadata endpoint) is theformal description of the OData service. It is defined using the Conceptual Schema Definition Language (CSDL / EDMX).

The metadata document:

Describesentity types, complex types, and their properties(types).

Definesentity sets and singletons(sets).

Includes ODatafunctions and actions, together with parameters and return types.

Describes therelationships and navigation propertiesamong entities.

This matches optionD:“To describe the types, sets, functions, and actions.”

OptionB(“list the available entity sets, functions, and singletons”) is incomplete, since the document also defines types and relationships.

Why the others are incorrect:

A – API’s security requirements:Security is handled elsewhere (OAuth/XSUAA, configuration, API gateways), not in the OData metadata document.

C – Human-readable description:While a developer can read the XML, the primary intent is amachine-readableformal model for tools and clients.

In CAP, external services are typically defined using:

service.cds or additional CDS files that declare:

using { API as ExternalService } from './external-service.edmx';

This integrates the external OData metadata into the CAP model layer.

CAP convention loads external models annotated in CDS files, making service.cds the default place for such declarations.

Incorrect options:

A – index.js: Holds custom logic, not service definitions.

B – package.json: Lists dependencies and scripts.

C – manifest.json: Not used in CAP backend projects.

OData protocol specifies:

PATCH is used for partial updates, where only changed fields are provided.

PUT performs complete replacement of an entity.

POST is used for create operations or invoking actions.

Thus, partial updates in OData use the PATCH method.

Cloud Foundry CLI uses:

cf api to set or view the target Cloud Foundry API endpoint before logging in.

Other commands:

cf login: authenticate against the already-set endpoint.

cf target: view/set org and space.

cf endpoint: not a valid command.

In observability:

Prometheus (A):

Used for metrics scraping and monitoring, and commonly integrated with BTP systems (especially Kyma).

Logstash (C):

Part of the Elastic Stack, used for log forwarding and transformation, can be integrated with BTP for centralized logging pipelines.

Incorrect options:

B – Terraform: An IaC tool, not an observability tool.

D – Jenkins: A CI/CD tool, not for observability.

To build a Java (Spring Boot) application with the SAP Cloud SDK:

Java SE Development Kit 8 (A): Minimum required Java runtime.

Apache Maven 3.5+ (B): Required build tool for Java-based SDK modules.

Incorrect options:

C: MDK is for mobile app development, unrelated to Cloud SDK Java backend.

D: Spring Initializr can be used optionally but is not required; it is a development aid, not a requirement.

When connecting from a CAP application to thesandboxof SAP API Business Hub (now SAP Business Accelerator Hub) for APIs such as theBusiness PartnerOData service, the learning content and examples describe that:

The sandbox environment is protected by anAPI keythat must be sent in a specific HTTP header (for example, APIKey or similar) with each request.

Tutorials for CAP/Cloud SDK and S/4HANA integration in a training context show configuration steps where developers obtain anAPI keyfrom the hub and configure it in a destination or in custom code for outbound calls.

This matches optionC – API key.

Why the other options are incorrect:

A – Client certificate:Client certificates are common for productive mutual TLS connections, not for the public sandbox.

B – Service principal:“Service principal” is an Azure-specific concept and not how the sandbox on SAP API Business Hub is accessed.

D – OAuth token:Many productive APIs use OAuth 2.0, but thesandboxin the official exercises is specifically accessed using an API key.

Comprehensive and Detailed Explanation

Kubernetes is acontainer orchestration platformused to:

Deploy containers

Scale applications horizontally

Perform rolling updates

Maintain desired state

Manage service discovery and networking

Automate fault recovery

Thus, Kubernetes is fundamentally aboutmanaging deployment, scaling, and lifecycle of containerized applications.

Why the Others Are Incorrect:

A:Development happens outside Kubernetes.

B:Virtual machines are managed by cloud infrastructure, not Kubernetes.

C:Kubernetes schedules containers on OS nodes; it doesn't manage the OS itself.

kubectl is thecommand-line interface for Kubernetes. According to the Kubernetes documentation:

kubectl communicates with theKubernetes API server.

It is used tocreate, update, delete, and inspectKubernetes resources such as Pods, Deployments, Services, ConfigMaps, and so on.

It is the primary tool administrators and developers use tomanage resources in a Kubernetes cluster.

This corresponds exactly to optionB – To interact with the Kubernetes API to manage cluster resources.

Why the others are incorrect:

A – Configure storage systems:You can manage storage-related Kubernetes objectsviakubectl, but that is only one aspect of managing resources; it is not the core definition.

C – Set up cloud environments:Cloud environments (accounts, projects, VPCs) are managed by cloud-provider-specific tools, not by kubectl.

D – Create virtual networks:Kubernetes networking is handled by CNI plugins and cluster configuration; kubectl does not directly create underlying virtual networks.