Free IBM C1000-142 Practice Exam with Questions & Answers | Set: 3

IBM® Event Streams for IBM Cloud® is a high-throughput message bus built with Apache Kafka. It is optimized for event ingestion into IBM Cloud and event stream distribution between your services and applications. Event Streams was previously known as Message Hub. You can use Event Streams to complete the following tasks: - Offload work to back-end worker applications. - Connect event streams to streaming analytics to realize powerful insights. - Publish event data to multiple applications to react in real time

Explanation

NoSQL databases are non-relational, which eliminates the need for connecting tables. Their built-in sharding and high availability capabilities ease horizontal scaling. If a single database server is not enough to store all your data or handle all the queries, the workload can be divided across two or more servers, allowing companies to scale their data horizontally.

Serverless computing is a cloud computing execution model that provisions computing resources on demand and offloads all responsibility for common infrastructure management tasks. They are auto scalable so it can handle extremely active traffic periods.

Serverless computing does-not means there are no physical servers utilized, of course there are servers, but we don't have to manage them, in background cloud provider manage (provisioning, scheduling, scaling, patching and more) for us, this gives developers more time to develop and optimize their front-end application code and business logic. And with serverless, customers never pay for idle capacity. They pay only for the resources required to run their applications, and only when those applications are running.

Serverless is a polyglot environment, enabling developers to code in any language or framework - Java, Python, node.js - with which they're comfortable. Because serverless scales up and down on demand in response to workload, it offers significant cost savings for spiky workloads. But it does not offer the same savings for workloads characterized by predictable, steady or long-running processes; in these cases, a traditional server environment might be simpler and more cost-effective.

Serverless Implementations differ across service providers, and capabilities vary, including supported runtimes, authentication, scaling and monitoring.

Serverless architectures are well-suited for event-driven, IOT and stream-processing workloads most notably open-source Apache Kafka event streaming platform.

Benefits:

- Pay only for the time for our code will run.

- Developer don't have to take care of servers or infrastructure, it maintains by cloud provider, so

they can focus more on development and business logic.

- API Management & Integrated event sources.

- Serverless scales up and down on demand in response to workload

In IBM Cloud, the responsibilities for managing the lifecycle of, operating, and securing products are shared between IBM® and the customer.

Explanation

Correct Answer : IBM Cloud® Virtual Private Endpoints (VPE) for VPC enables you to connect to supported IBM Cloud services from your VPC network by using the IP addresses of your choosing, allocated from a subnet within your VPC. In-Correct Answer : Service endpoints: Use service endpoints to securely connect to IBM Cloud services over the IBM Cloud private network. Traffic to and from service endpoints are subject to ACL and security group rules. Note : Similar to service endpoints, VPE for VPC provides private connectivity to IBM services, but within the VPC network of your choosing.

Application virtualization: Application virtualization runs application software without installing it directly on the user’s OS. This differs from complete desktop virtualization (mentioned above) because only the application runs in a virtual environment—the OS on the end user’s device runs as usual. There are three types of application virtualization:

Local application virtualization: The entire application runs on the endpoint device but runs in a runtime environment instead of on the native hardware.

Application streaming: The application lives on a server which sends small components of the software to run on the end user's device when needed.

Server-based application virtualization : The application runs entirely on a server that sends only its user interface to the client device.

You can use the IBM Cloud® Security and Compliance Center to create and manage templates by using the console or the APIs. Templates help you define your preferred property values for supported resources in your accounts. After you create a template and attach it to a scope, your defined values override the defaults that are provided by IBM. Later, when an account user creates a resource that is targeted by the template, your customized defaults are applied.