Pass the IBM IBM Certified Advocate - Cloud v2 C1000-142 Questions and answers with CertsForce

Cloud computing means on-demand network access to shared resources. The main benefits of cloud computing is to provide faster time to market, Improved agility of applications. Selling un-used time slice of computing is the earliest implementation of cloud computing. [Exam Tips] : On-demand self-service is an essential characteristic of cloud computing.

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

Explanation

An advantage for a business to use the pay-as-you-go model is cost savings.

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.

Cloud is a great way to switch IT spending to a pay-as-you-go model and reduce CapEx costs, as well as reap other benefits. Switching to the cloud results in faster development and release of new applications. Companies who switch to the cloud experience improved efficiency, decreased development time, and decreased expenses. Companies who transform using cloud technologies find they are leading change and innovation in their industry.

Explanation

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

Cloud computing is on-demand access, via the internet, to computing resources—applications, servers (physical servers and virtual servers), data storage, development tools, networking capabilities, and more—hosted at a remote data center managed by a cloud services provider (or CSP). The CSP makes these resources available for a monthly subscription fee or bills them according to usage. Compared to traditional on-premises IT, and depending on the cloud services you select, cloud computing helps do the following: Lower IT costs: Cloud lets you offload some or most of the costs and effort of purchasing, installing, configuring, and managing your own on-premises infrastructure. Improve agility and time-to-value: With cloud, your organization can start using enterprise applications in minutes, instead of waiting weeks or months for IT to respond to a request, purchase and configure supporting hardware, and install software. Cloud also lets you empower certain users—specifically developers and data scientists—to help themselves to software and support infrastructure. Scale more easily and cost-effectively: Cloud provides elasticity—instead of purchasing excess capacity that sits unused during slow periods, you can scale capacity up and down in response to spikes and dips in traffic. You can also take advantage of your cloud provider’s global network to spread your applications closer to users around the world.

IBM Cloud Satellite is IBM's distributed cloud offering. It provides consistency in services and the ability to deploy anywhere. It is a platform service that allows users to deploy IBM Cloud services outside IBM Cloud data centers. IBM Cloud Satellite can run in a client data center, another cloud, or in-edge networks (distributed cloud framework that brings enterprise applications closer to a data source). When an IBM Cloud Satellite location is established, it allows the user to run selected IBM Cloud services in that location.