IBM C1000-138 Exam Practice Test Instant Access

Question 1

How can an application developer create a better app using APIs?

ABy using multiple APIs to create composite apps to get extra value.

BBy dealing with the long, arduous task as part of the partner on-boarding process to use their APIs.

CBy using as few APIs as possible to avoid complex apps, errors, and delays in development.

DBy using internal APIs to get data from a third-party company as internal data is more valuable than public data.

Answer : A

Application developers can create better apps using APIs by combining multiple APIs to create composite apps. This approach allows developers to leverage the functionality of different APIs to create more valuable and innovative applications. By combining APIs, developers can access a wider range of data and functionality, create more personalized experiences, and solve complex problems more effectively.

IBM API Connect: Creating Composite APIs

IBM API Connect: Building Better Apps with APIs

Question 2

Which statement is correct regarding the creation of a SOAP proxy API from an existing SOAP service?

AThe WSDL file describing the SOAP service is uploaded and the dependencies are set target services.

BA single .zip file that contains the WSDL file describing the SOAP service, and its dependent documents is uploaded.

CTo expose a SOAP service in API Connect, it has to be mapped to a REST API.

DIn API Connect, a SOAP API can be created only from a stand-alone WSDL.

Answer : B

When creating a SOAP proxy API from an existing SOAP service in IBM API Connect, a key step is to upload a single .zip file that contains the WSDL (Web Services Description Language) file and any associated dependent documents. This enables IBM API Connect to understand the service definition and its dependencies, allowing it to create the proxy API correctly. This method is necessary to ensure all components required for the SOAP API are packaged together and recognized during the import process.

IBM API Connect v10.0.3 Documentation

Creating SOAP APIs

Question 3

What is a key requirement when creating an OpenAPI 3.0 API secured by basic authentication, API Key, or OAuth?

AIt needs an external security service.

BThe relevant information can only be passed in the header.

CThe API can only be enforced by Datapower API Gateway.

DThe security-schema-name must follow a strict pattern.

Answer : D

When creating an OpenAPI 3.0 API in IBM API Connect v10.0.3 that is secured by basic authentication, API Key, or OAuth, it is essential that the security-schema-name follows a specific pattern. This pattern is required to ensure proper validation and application of the security definitions according to the OpenAPI 3.0 specification. The security definitions help define the methods of authentication that are enforced for accessing the API endpoints, which is crucial for maintaining the API's integrity and security.

IBM API Connect v10.0.3 Now Available

IBM API Connect Support Lifecycle Policy

Question 4

What is correct about using context variables in Gatewayscript policies?

Acontext.set('my.vars.amount', 100) generates { 'my.vars': { 'amount': 100 } }

BAll API context variables are saved in an XML tree.

Ccontext.message.statuscode = '200 Success' updates the status code of the message object.

Dcontext. request. statuscode = 400 updates the status code of the request object.

Answer : A

Setting Context Variables: In Gatewayscript policies, thecontext.setfunction is used to set context variables. The syntaxcontext.set('my.vars.amount', 100)creates a JSON structure wheremy.varsis an object containing the keyamountwith the value100.

JSON Structure: This method of setting context variables generates a JSON structure, which is a common format for data interchange in APIs. The resulting structure would be{ 'my.vars': { 'amount': 100 } }.

Usage in Policies: This approach allows for easy manipulation and access to variables within the GatewayScript, facilitating dynamic API behavior based on the context.

Documentation Reference: According to the IBM Certified Solution Implementer - API Connect v10.0.3 documentation, usingcontext.setin this manner is the correct way to generate the specified JSON structure1.

1:IBM Certified Solution Implementer - API Connect v10.0.3 Documentation

Question 5

Which HA concept applies for OAuth operations in a multi-node Kubernetes cluster?

AQuorum

BHeartbeat

CSTONITH

DQuantum

Answer : A

High Availability (HA) Concept: In a multi-node Kubernetes cluster, the concept of ''Quorum'' is crucial for ensuring high availability and consistency, especially for operations like OAuth.

Quorum Definition: Quorum refers to the minimum number of nodes that must agree on a transaction or operation to ensure consistency and avoid split-brain scenarios. This is particularly important in distributed systems to maintain data integrity and availability.

OAuth Operations: For OAuth operations, maintaining a quorum ensures that the authentication and authorization processes are reliable and consistent across the cluster. This helps in preventing issues where different nodes might have conflicting states.

Documentation Reference: According to the IBM Certified Solution Implementer - API Connect v10.0.3 documentation, the concept of quorum is applied to ensure high availability and consistency in OAuth operations within a multi-node Kubernetes cluster1.

1:IBM Certified Solution Implementer - API Connect v10.0.3 Documentation

Question 6

Which statement is true regarding API Analytics Dashboards?

AData from multiple Catalogs cannot be visualized on a single dashboard.

BA visualization should be created and saved after creating a custom dashboard.

CA single dashboard may be created that includes data from multiple Catalogs.

DAll users have the ability to create custom dashboards.

Answer : C

API Analytics Dashboards: In IBM API Connect, analytics dashboards provide insights into API usage, performance, and trends. These dashboards are essential for monitoring and optimizing API strategies.

Multiple Catalogs: IBM API Connect allows the creation of a single dashboard that can aggregate and visualize data from multiple catalogs. This feature is particularly useful for organizations that manage APIs across different environments or stages (e.g., development, testing, production).

Visualization Creation: While visualizations are an integral part of dashboards, they can be created and saved at any time, not necessarily after creating a custom dashboard.

User Permissions: The ability to create custom dashboards may be restricted based on user roles and permissions. Not all users may have the necessary permissions to create custom dashboards.

Data Aggregation: By including data from multiple catalogs in a single dashboard, API providers can gain a comprehensive view of their API ecosystem, making it easier to identify patterns, detect anomalies, and make informed decisions.

IBM API Connect documentation on analytics and dashboard creation.

Best practices for API management and monitoring in IBM API Connect.

Question 7

Which statement is true about the use of $ref?

AGatewayscript can use $ref instead of included files.

B$ref can only be defined in YAML files.

C$ref must be defined at the root level of the YAML file.

DWhen an API is published, the $ref is replaced with the contents of the referenced file.

Answer : D

$ref Usage: The$refkeyword is used in OpenAPI (formerly Swagger) specifications to reference reusable components, such as schemas, parameters, and responses, defined elsewhere in the document or in external files.

Replacement Mechanism: When an API is published, the$refis processed and replaced with the actual contents of the referenced file or component. This allows for modular and maintainable API definitions, where common elements can be defined once and reused across multiple APIs.

YAML and JSON: The$refkeyword can be used in both YAML and JSON files, which are common formats for defining OpenAPI specifications. It is not limited to YAML files.

Location Flexibility:$refcan be defined at various levels within the YAML or JSON file, not necessarily at the root level. It can be used within objects, arrays, and other structures as needed.

Gatewayscript: While Gatewayscript can include external files, it does not use the$refkeyword in the same way as OpenAPI specifications. Gatewayscript has its own mechanisms for including and referencing external scripts.

IBM API Connect documentation on OpenAPI specifications and the use of$ref.

General principles of API design and modularization using OpenAPI.

IBM C1000-138 IBM API Connect v10.0.3 Solution Implementation Exam Practice Test