Free IBM C1000-142 Practice Exam with Questions & Answers | Set: 5

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

[Exam Tips]: You can expect, few QUESTION NO: from here, Remember bold keyboards

IBM cloud analytic services provide a simple way to find new and un-expected insight to quickly to deliver business challenging results.

Explanation

Kubernetes, also known as K8s, is an open-source system for automating deployment, scaling, and management of containerized applications.

Hybrid multicloud is hybrid cloud that combines public cloud services and private cloud services from more than one cloud service provider. As It's a combination of public cloud + private cloud so users have a choice to move workloads between public and private cloud. For example: User can keep highly sensitive data on private cloud server behind the firewall & and can use public cloud capabilities also for less-sensitive workloads and data.

Explanation

Hypervisor : a hypervisor is a lightweight software layer. A hypervisor is an abstraction layer that abstracts physical compute resources, making them available virtually to virtual machines (VMs). The hypervisor assigns processors, memory, and storage to each VM. It keeps VMs separate so that they do not interfere with each other. Features of a hypervisor are: 1. A hypervisor is software that runs on the physical server or host. 2. It pools the resources from the physical server and allocates them to a virtual environment. 3. Hypervisors are leveraged to virtualize hardware whether it's on-premises or in the public cloud.

Block storage is used to store data files on Storage Area Networks (SANs) or cloud-based storage environments. It can be attached to compute instance. Block Storage normally mounted onto only one compute node at a time. With block storage, you specify the size of the storage and pay a fee based on the size you provisioned.

When data is moved to block storage, the underlying SAN technology breaks the data into separate, uniform-sized pieces, or blocks. Each block will be given a unique identifier. The SAN will then place those blocks onto the physical storage, distributing them across several disks, often making multiple copies.

When a user or application requests data from a block storage system, the underlying SAN technology reassembles the data blocks and presents the data to the user or application.

Block storage decouples data from user environments. It allows data to be spread and duplicated across multiple storage devices, enabling faster retrieval and higher resilience to disk failures.

Benefits:

Provides the lowest latency: Block storage provides the lowest latency for network-based storage versus local disk drives in the server, Provide IOPS up to 48,000 IOPS.

High performing: Block storage is highly available and independent of the clients that access it. It remains available and durable regardless of client outages.

High redundancy: Network-based block storage is considered to have a higher level of redundancy compared to local disk storage.

Endurance and Performance tiers: Block storage has two tiers from which to choose. Volumes can be created from 20 GB to 12 TB in size.

Eight authorized hosts: Block storage allows eight authorized hosts (can request up to 64) to connect via the multipath IO (MPIO) iSCSI connection.

Snapshots: Block storage allows point-in-time non-disruptive “snapshots,” which can be replicated to a cross-regional data center as a duplicate volume.

Custom costs: Block storage allows monthly and hourly billing cycles.

Data-at-rest encryption: Block storage offers provider-managed encryption-at-rest. Note: Customer-managed encryption is not supported by IBM Classic Storage; however, customer-managed encryption keys can be stored

Use Cases :

⦾ As you have learned, block storage has a high performance and is easily updatable. Therefore, many organizations use it for transactional databases.

⦾ Because of its high performance and reliability, block storage is a common solution for storing emails.

⦾ Block storage suitable for low latency workloads where consistently high speeds required.

IBM® API Connect is an integrated API management offering, where all of the steps in the API lifecycle, and the actions that surround it, are performed within the offering. The steps of the API lifecycle include creating, running, managing, and securing APIs.

While Gen 1 and Gen 2 have many of the same features and functions, Gen 2 provides these additional benefits: - 5X faster virtual server processing. - Up to 80 Gbps network performance on virtual server profiles. - Block storage is larger in Gen 2.

Today answer this question, it's important to know cloud computing benefits Below are the benefits of cloud computing : Reduced IT costs, Scalability, Business continuity, Collaboration efficiency, Flexibility of work practices, Access to automatic updates. Best answer here is : Scalability and Cost-effectiveness

Object Storage enable you to store and access unstructured data anywhere in the world with a self-service portal backed by RESTful APIs.

Object Storage supports exponential data growth and cloud-native workloads with built-in high-speed file transfer capabilities, cross-region offerings and integrated services.

Cloud object storage makes it possible to store practically limitless amounts of data, simply and cost effectively.

Example use cases of cloud object storage include:

- Backup and recovery

- Data archiving

- Cloud-native app data

- AI and analytics