C1000-142 Questions and Answers

Explanation

The IT equipment within a data center consists of three main elements necessary for a computing environment to function: Compute: The memory and processing power needed to run applications that are usually supplied by enterprise-grade servers. Storage: Data centers include primary and backup storage devices. They may be hard disk or even tape drives, but best-in-class facilities typically feature all-flash arrays. Networking: They contain a broad array of networking equipment, ranging from routers and switches to controllers and firewalls. In addition to the IT equipment it contains, every data center houses that equipment’s support infrastructure, including the following: Environmental controls: Sensors monitor the airflow, humidity, and temperature in the facility at all times, with systems in place to guarantee that temperature and humidity remain within hardware manufacturers' specified ranges. Server racks: Most data center equipment is housed in specially designed racks or in purpose-built cabinets or shelving. Power supplies: Most data centers employ battery-based backup power systems able to compensate for short-term power outages and larger generators that can supply power in case longer commercial power grid outages occur. Cabling and cable management systems: An enterprise data center may contain hundreds of miles of fiber optic cable. Systems and equipment to keep that cabling orderly and accessible are a must.

Horizontal pod autoscaler enables customers to determine the minimum or the maximum number of pods to run the CPU and memory utilization the pods should utilize. The HPA automatically scales the workload to match the demand. When there is an increased workload, it deploys more pods. When there is a decrease in the workload, it communicates to the workload resource to scale back down.

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.

Correct Answer:

Hyper Protect Crypto Services is a key management system that provides keep your own key (KYOK) capabilities for cloud data encryption. It provides lifecycle management for keys, encryption for IBM Cloud services, access management, auditing, and security certification.

In-Correct Answers:

Key Protect securely stores and applies secrets for apps. It provides encryption solutions and allows data to be secured and stored in IBM Cloud through envelope encryption. If users want to manage symmetric keys to encrypt data at rest, they should use Key Protect.

IBM Certificate Manager service helps you manage and deploy SSL/TLS certificates for your apps and services. Certificate Manager provides you with a security-rich repository for your certificates and their associated private keys and helps prevent outages by sending you notifications when your certificates are about to expire.

IBM Cloud Hyper Protect Virtual Servers grant you complete authority over your Linux-based virtual servers for workloads that contain sensitive data and business IP. They offer a confidential computing environment, addressing your top security concerns for peace of mind when building applications in the cloud and helping you with the following issues:

- Memory protection through a trusted execution environment

- Data-at-rest and data-in-flight encryption

- Prevention of unauthorized access

Explanation

Site reliability engineering (SRE) uses software engineering to automate IT operations tasks - e.g. production system management, change management, incident response, even emergency response - that would otherwise be performed manually by systems administrators (sysadmins). The principle behind SRE is that using software code to automate oversight of large software systems is a more scalable and sustainable strategy than manual intervention - especially as those systems extend or migrate to the cloud. SRE can also reduce or remove much of the natural friction between development teams who want to continually release new or updated software into production, and operations teams who don't want to release any type of update or new software without being absolutely sure it won't cause outages or other operations problems. As a result, while not strictly required for DevOps, SRE aligns closely with DevOps principles and can be play an important role in DevOps success

Content Delivery Network is a distributed server network that delivers temporarily stored, or cached, copies of website content to users based on the users’ geographical location to enables faster web performance. Exam tips: Remember CDN Improving website load times, by distributing content from nearby CDN server.

Direct area storage, also known as direct-attached storage (DAS), is as the name implies. DAS is a storage device which directly connected to your computer or server, if often connected to a single machine only. Some examples of direct attached storage are floppy disks, optical disc, compact discs (CDs) and digital video discs (DVDs), hard disk drives (HDD), flash drives and solid-state drives (SSD). DAS is often connected with single computing machine only so sharing capabilities are limited and poor. Block storage is highly available and resilient and will often include data encryption at rest and in transit. 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. Block storage suitable for low latency workloads where consistently high speeds required. File Storage associated with Network Attached Storage (NAS) technology. File Storage organizes files in a hierarchy of named directories. The ability for File Storage to be mounted to multiple compute nodes at a time make it an ideal solution for common storage requirements. 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. Use cases : Backup and recovery, Data archiving, Cloud-native application, AI and big data analytics.

Explanation

Correct Answer : MongoDB is an open source, non-relational database management system that uses flexible documents to process and store various forms of data. A NoSQL solution, MongoDB provides an elastic data model that enables users to store and query multivariate data types with ease. This not only simplifies database management for developers but also creates a highly scalable environment for applications and services. MongoDB uses documents or collections of documents as its basic unit of data. Formatted as JSON objects, these documents can store various types of data and be distributed across multiple systems. MongoDB offers a few capabilities that make it stand out from other database management systems, including load balancing, ad hoc database queries, and multi-language support. In-Correct Answers Redis (for REmote DIctionary Server) is an open-source, in-memory, NoSQL key-value store that is used primarily as an application cache or quick-response database. Redis supports multiple data structures, built-in Lua scripting, multiple levels of on-disk persistence, and high availability. While Redis is an in-memory database store, MongoDB is known as an on-disk document store. Although both solutions are built for different purposes, they are often used together to maximize the speed and efficiency of a NoSQL database. PostgreSQL, commonly pronounced “Post-GRES,” is an open-source database that has a strong reputation for its reliability, flexibility, and support of open technical standards. PostgreSQL provides the ability to restore databases to a specific moment in time because it maintains a write-ahead log that logs every database change. PostgreSQL features built-in support for multiple procedural languages. etcd is an open-source, distributed key-value store used to hold and manage the critical information that distributed systems need to keep running. etcd’s performance is heavily dependent upon storage disk speed, so it’s highly recommended to use SSDs in etcd environments. Db2 is a relational database with enterprise-grade performance. It provides multizone support allowing it to be run in a highly-available configuration. Note : Cloudant is also a document database that uses JSON files to store and index documents. Its serverless design allows for easy scaling based on need.

Explanation

Corrected Answers : 48k IOPS

A resource is the instance of the service

The goals of cloud native are to adopt design patterns, paradigms, and techniques that enable loosely coupled systems build around microservice architecture principles.

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.

Identity and access management, or IAM is used to control access to resources.

Explanation

IBM Cloud® use Cloud Foundry as Open Source for PaaS .

Explanation

F5 BIG-IP on IBM Cloud for VMware Solutions provides advanced load balancing, traffic management, and application security within your VMware cluster and directly attached to all of your networks.

Explanation

Correct Answer : IBM API Connect® Service provides API creation and management with security-rich features and centralized governance. You can use IBM API Connect for IBM Cloud to quickly create APIs for microservices based on Node.js and Java runtimes. When APIs are hosted on API Connect: Consumers can locate, understand, learn, and experiment with the APIs they need before committing to use them. They can also self-subscribe to them using revocable keys. Providers can hide the exact locations of API implementations, enable version-based routing, and throttle inbound requests to the API on a per-consumer basis. These capabilities are helpful while packaging data for partners. Consumers and providers can track use and response times, which allows them to tie resource use to their business model. In-Correct Answers IBM Event Streams for IBM Cloud is a high-throughput message bus built with Apache Kafka and was previously known as Message Hub. In Event Streams, applications send data by creating a message and sending it to a topic. It uses availability support from IBM Kubernetes services to maintain high availability and resilience. Integration is available with IBM Cloud services as well as Watson Internet of Things® (IoT). Key Features Fully Managed: Built on Apache Kafka, IBM Cloud Event Streams is a fully managed service. Intuitive UX: Deploy your Event Streams in minutes using the benefits of IBM Design Thinking. Event-Driven: Use integrations with IBM Cloud services like Watson IoT platform, IBM Streaming Analytics, and IBM Cloud Functions to easily create your event-driven architecture. IBM App Connect® is a powerful all-in-one tool for easily connecting apps, integrating data, building APIs, and acting on events. App Connect can connect any endpoint, map your data, and move data fast. With IBM App Connect, you can reliably access and combine data assets across all your enterprise applications, databases, and systems and expose them as APIs. You can connect to any application or endpoint, from the latest SaaS apps to mainframe systems. IBM App Connect allows you to connect applications together using a common platform. It enables you to build automation triggers between applications and automate workflows and integrate data using the included 75+ connectors and 50+ templates. Key Features Intuitive Development Tools: Easily create APIs, thoroughly test them, then share them with others both inside and outside your organization. Easy Yet Powerful Security: Use pre-defined security policies to protect your API or customize your own. Lifecycle Management: Manage the entire lifecycle of your APIs for your internal team, external consumers, and third parties. Customizable Developer Portal: Share your APIs with other developers using the built-in fully-customizable portal. The portal includes the ability to communicate with API consumers using a variety of modalities including blogs, forums, and messaging. IBM® MQ on Cloud provides enterprise-grade messaging capabilities to allow the flow of information between different applications. This service is fully managed so you can focus on integrating MQ applications rather than upgrades and patches. Key Features Deduplication: Messages are delivered without duplicates. Connectivity: Connectivity issues are handled by MQ. Encryption: End-to-end data encryption is used to ensure the security of your data. [Exam Tips] Remember following points: If you need to create, secure, and manage APIs use API Connect If you need to connect, copy, and sync application data across platforms use APP Connect If you need to deliver reliable, secure messaging, either on-premises or over the cloud use MQ If you need to build adaptive smart apps that react to events as soon as they happen use IBM Event Streams

Explanation

Continuous Integration checks that the application is not broken whenever new commits are integrated into the main branch; prevents significant drift, competing changes, and merge conflicts.

Continuous delivery lets development teams automate the process that moves software through the software development lifecycle, and it can provide many benefits when provisioning an integrated toolbox, including the following: -Reduce time to deployment through continuous testing and development -Decrease the costs associated with traditional software development -Scale software development based on project size -Deploy code automatically into each phase of the development cycle A continuous delivery tool enables you to use open source tools to build, deploy, and manage your applications. By integrating sets of tools, you can create repeatable and manageable tasks, not only for your development team but also your operations team. Open source continuous delivery tools you can use for a strong continuous delivery pipeline include: Jenkins, Concourse CI, Spinnaker, Travis CI, GoCD and GitLab CI

Explanation

IBM Watson Studio is a suite of tools and collaborative environment for data scientists, developers, and domain experts.

DevOps is an increasingly common approach to agile software development that developers and operations teams use to build, test, deploy and monitor applications with speed, quality and control. DevOps is relevant to any kind of software project regardless of architecture, platform or purpose. DevOps enables fast and automated deployment of services. DevOps brings together development and operations teams to overcome configuration and deployment delays. With a DevOps strategy you can do the following: - Accelerate the delivery of reliable software. - Balance speed, cost, quality, and risk with increased capacity to innovate. - Reduce time to customer feedback with improved customer experience.

Explanation

Analytics Engine service develop and deploy analytics applications using open source Apache Spark and Apache Hadoop. Customize the cluster using your own analytics libraries and open source packages. Integrate with IBM Watson Studio or third-party applications to submit jobs to the cluster. HIPAA readiness option available in the Dallas region for Standard-Hourly and Standard-Monthly plans.