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

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.

Kubernetes command usage:

kubectl create -f <filename>explicitly creates resources defined in the YAML file, including Pods.

While kubectl apply can also create resources, the question asks specifically for the commandused to createa Pod, which aligns withcreate -f.

Incorrect options:

A:kubectl run is used to create pods from images, not YAML files.

B:kubectl get pod is only for listing.

C:apply is for declarative management but not the direct answer for explicit creation.

Comprehensive and Detailed Explanation

Authorization flow in SAP BTP:

Scopesare defined in XSUAA.

Scopes are grouped intorole templates.

Role templates becomerolesin the subaccount.

Roles are assigned tousers.

Role collections group roles for easier assignment.

If a user cannot access an app:

The most common cause is:

C – Roles aren’t assigned to the user

Without receiving the required role, the user’s JWT tokendoes not contain the required scopes.

Even if:

Scopes exist

Role templates exist

Role collections exist

…the user mustexplicitlyhave the role (or role collection) assigned.

Why the Others Are Incorrect:

A:Client applications don’t require role assignments.

B:Role collections may be assigned, butroleassignment is the critical missing piece in this scenario.

D:Client applications do not need role collections.

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.

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

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 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.

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.

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.

Comprehensive and Detailed Explanation

The SAP Cloud SDK enhances open-source frameworks for enterprise-grade side-by-side extensions.

B – Multi-tenant persistence

The SDK provides:

Multi-tenant database segregation

Tenant-specific configuration

Automatic resolution of tenant context

Support for SaaS extension scenarios

This feature is essential for SaaS applications built on SAP BTP.

C – Feature toggling

The SDK includes libraries that allow:

Dynamic enabling/disabling of features

Gradual rollout

Canary testing

Tenant-based feature control

This helps enterprise customers deploy new features safely.

Why the Others Are Incorrect:

A – Tightly coupled integration:

SAP strongly promotesloosely coupledarchitectures.

D – Code samples:

The SDK provides samples, but that's not an “enterprise adaptation feature.”

cds build performs build-time steps such as:

Generating required artifacts (e.g., SQL, EDMX, JSON)

Compiling CDS models into runtime formats

Preparing modules for deployment artifacts (e.g., for MTA)

This aligns with C – compile the application.

Incorrect options:

A: Deployment is done via cf push or mta deployment.

B: Tests run via npm test or cds test.

D: Docker image creation is external (e.g., Docker CLI, buildpacks).

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.

CAP’s security architecture relies on:

XSUAA service (C):Provides OAuth 2.0 authorization, JWT tokens, scopes, and role templates for CAP services.

SAP Cloud Identity Services (D):Handles identity provisioning, authentication, and trust relationships, used along with XSUAA.

A Kubernetesworker nodetypically includes:

Container Runtime (C):Runs application containers (e.g., containerd).

kube-proxy (D):Manages node-level networking and routing.

kubelet (E):Communicates with control plane, manages containers on the node.

Incorrect options:

A – service-mesh:An add-on, not a core worker-node component.

B – etcd:Part of thecontrol plane, not workers.

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.