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Introduction to Cloud – Cognitive Class Answers

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Introduction to Cloud ibm cognitive class answers

Introduction to Cloud ANSWERS – IBM Cognitive Class

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Introduction to Cloud - Cognitive Class Answers

Module 1 – Overview of Cloud Computing          

Question 1) In the US National Institute of Standards and Technology, NIST, definition of “cloud computing”, what does the statement “shared pool of configurable computing resources” include?

  • Leverage cloud services over the open internet on hardware owned by the cloud provider
  • Data security, associated with loss or unavailability of data causing business disruption
  • Networks, servers, storage, applications, and services
  • Five essential characteristics, three deployment models, three service models

Question 2) What tasks do hypervisors accomplish? Select two.

Note: Make sure you select all of the correct options!

  • Enable multiple operating systems to run alongside each other, sharing the same physical computing resources.
  • Facilitate access to mainframes for multiple users to access the same data storage layer.
  • Scale on demand to support fluctuating workloads.
  • Separates VMs logically and assigns each a share of the underlying computing power, memory, and storage.

Question 3) What are some of the cloud benefits that make it lower risk for enterprises to adopt cloud? Select two.

Note: Make sure you select all of the correct options!

  • Data security associated with loss or unavailability of data causing business disruption
  • The pay-as-you-go model allows enterprises to experiment with technologies as opposed to making long-term decisions based on little or no trial.
  • Diversity of standardization in how the constantly evolving technologies integrate and interoperate.
  • The speed with which applications can be up and running on the cloud versus months on traditional platforms, means enterprises can experiment, fail fast, learn, and course correct without setting them back significantly.

Module 2 – Cloud Adoption and Emerging Technologies

Question 1) An IBM Institute for Business Value study says that more than three-quarters of enterprises today are using cloud computing to expand into new industries. What additional benefits do organizations find when adopting the cloud:

  • Avoid having to fail at all
  • Improve customer experience and create enhanced products and services
  • Lengthen product lifecycles to ensure higher quality offerings
  • Continue making expensive decisions because it often worked in the past

Question 2) What is the three-way symbiotic relationship between IoT, AI, and Cloud?

  • Power, scale, dynamic nature, and economics of the cloud resources
  • Making sense of the endless streams of data from IoT devices
  • IoT delivers the data, AI powers the insights, and both emerging technologies leverage cloud’s scalability and processing power
  • AI consumes the data produced by IoT devices

Question 3) What is the three-way relationship between blockchain, AI, and the Cloud?

  • An immutable network allowing members to view only those transactions that are relevant to them.
  • Lends trust and transparency to AI by recording the data and variables that go into a decision made in an AI algorithm.
  • Blockchain provides the trusted, decentralized source of truth, AI powers the analytics and decisions made from the collected data, and cloud provides the globally distributed, scalable, and cost-efficient computing resources to support both technologies.
  • Globally distributed, scalable, and cost-efficient computing resources.

Module 3 – Cloud Computing Service and Deployment Models

Question 1)Which are some of the key components of cloud infrastructure? Select two.

Note: Make sure you select all of the correct options.

  • IaaS providers manage the hypervisors and provision virtual instances
  • IaaS providers deploy the middleware and install required applications on the virtual machines
  • IaaS providers manage large data centers that contain the physical machines required to power the various layers of abstraction on top of them
  • IaaS providers manage the hypervisors and end-users provision the virtual instances

Question 2) According to the video, which of these statements are true of Virtual Private Clouds (VPCs)? Select two.

Note: Make sure you select all of the correct options.

  • VPCs are provisioned in a logically isolated part of a shared public cloud
  • The VPC infrastructure is owned, managed, and operated by the public cloud service provider
  • VPCs may be provisioned over a cloud service provider’s infrastructure, but the infrastructure is owned, managed, and operated by the enterprise
  • VPC allows all users of the shared public cloud to access resources in the VPC on need basis; it also allows users of the VPC to access resources of the public cloud

Question 3) If an organization needs to run a highly sensitive and mission critical application with unpredictable performance and capacity requirements, which of the following models would best meet its requirements?

  • Hybrid Cloud
  • Public Cloud
  • Private Cloud
  • On-premise Data Centers

Module 4 – Components of Cloud Computing

Question 1) Is it possible to run completely different operating systems on Virtual Machines (VMs) that are on a single host? If yes, what makes this possible?

  • No, it is not possible—A single host can only work as one single virtual environment, and can, therefore, have only one environment.
  • Yes, Virtualization makes it possible— to have VMs, running different operating systems, on a single host.
  • Yes, Containerization makes it possible—to have VMs that are unique physical entities, so you can have completely different Operating Systems on them.
  • No, it is not possible—VMs are software-based versions of a single host. They cannot have different environments from one another.

Question 2) Which of these scenarios is ideal for the use of bare metal servers, as opposed to virtual servers? Select two.

Note: Make sure you select all of the correct options!

  • CPU and I/O intensive workloads
  • Low cost to use
  • Huge performance and strict security and compliance requirements
  • Workloads that require limited throughput and performance

Question 3) Subnets are the main area where security is implemented in the cloud. What is used to provide security at the virtual instance level in subnets?

  • Security Groups or SGs
  • Virtual Private Cloud or VPC
  • Load Balancers
  • Access Control Lists or ACLs

Module 5 – Cloud Computing Storage and Content Delivery Networks

Question 1) Which of these are features of Object Storage? Select two.

Note: Make sure you select all of the correct options!

  • Storage is attached to compute nodes using a fibre network
  • You can directly use Object Storage without attaching it to a compute node
  • Object Storage can be mounted on multiple compute nodes via an ethernet network
  • Object storage is effectively infinite

Question 2) There are four types of cloud storage available. Which storage type is ephemeral or non-persistent?

  • File storage
  • Direct Attached storage
  • Block storage
  • Object storage

Question 3) What is the main benefit of a Content Delivery Network (CDN)?

  • Network topology
  • Distribute tasks, workloads, and network traffic
  • Enhanced control over network traffic by routing traffic to specified resources
  • Speed, it makes your website faster by serving files from a location closer to the user.

Module 6 – Emergent Trends, Cloud Native, DevOps and Application Modernization

Question 1)What are the key elements of a hybrid Multicloud strategy?

  • For seamless working, it is recommended that if you’re subscribed to the infrastructure services of a cloud provider, you should subscribe to the application services provided by the same vendor.
  • Embraces a mix of cloud models and services as long as they are from the same cloud service provider
  • Embraces a mix of cloud models while creating a vendor lock-in with the cloud provider
  • Connects an organization’s on-premise private cloud and third-party public cloud into a single infrastructure

Question 2) What is an attribute that distinguishes serverless computing from other compute models?

  • In the serverless computing environment, compute resources cannot be scaled up or down
  • Serverless computing does not require any underlying servers for executing workloads
  • The serverless model requires NO provisioning of servers, installation of application stacks, or operation of the infrastructure BY the users/developers
  • End users pay for resources as long as they are running, even if idle

Question 3) Cloud adoption is an integral part of application modernization. What are the other two important components of modernization?

  • Service Oriented Architecture and Waterfall Methodology
  • VMs and Agile Methodology
  • Microservices and DevOps
  • Serverless and Virtual Machines

Final Exam Answers – Introduction to Cloud

Question 1)Which cloud deployment model lets users use multiple cloud models working together seamlessly?

  • Private
  • Hybrid
  • Broad Network Access
  • Public

Question 2)Which of these are essential characteristics of the Cloud? Select two.

Note: Make sure you select all of the correct options!

  • Single-tenant
  • On-demand self-service
  • Resource pooling
  • Fixed fee

Question 3)What are some cloud computing benefits? Select two.

Note: Make sure you select all of the correct options!

  • Purchasing off-the-shelf software and upgrades
  • Diversity of standardization in how the constantly evolving technologies integrate and interoperate.
  • Competitive advantage
  • Flexibility and efficiency

Question 4)According to the International Data Corporation (IDC), what is that crucial ability that will make cloud computing essential for businesses to succeed, sustain, and compete in today’s markets?

  • Multi-cloud infrastructures
  • Applied exponential technologies such as AI, Automation, IoT, and Blockchain
  • Cognitively-enabled workflows
  • Data-driven decisions

Question 5) IoT, AI, Blockchain, and Analytics are emerging technologies enabled by the cloud. What are some of the attributes of cloud computing that enable these technologies? Select two.

Note: Make sure you select all of the correct options!

  • Cloud resources are offered in a single-tenant model
  • The power and scale of cloud resources
  • Computing resources can be accessed via internet connection
  • Cloud offers on-demand computing

Question 6) In the car analogy used to explain the differences between the three cloud service models, which of the provided options is an analogy for PaaS?

  • Hiring a taxi
  • Buying a car
  • Leasing a car
  • Renting a car

Question 7) Which of these scenarios are good use cases for Public Cloud? Select two.

Note: Make sure you select all of the correct options!

  • Reducing time-to-market for products and services
  • Managing business critical platforms and applications
  • Disaster recovery, data protection, and business continuity
  • Applications with stable capacity and resourcing needs

Question 8) Private cloud platforms can be implemented internally or externally. What is an example of external private cloud platform?

  • Virtual Private Cloud or VPC
  • Cloud platform that runs on-premises
  • Platform that is owned, managed, and operated by the organization
  • Controlled access and customized security measures

Question 9) The infrastructure layer is the foundation of the cloud and consists of physical resources. Where do these physical resources reside?

  • Regions, Zones, and Data Centers
  • Compute, Storage, and Networking Resources
  • Virtual Servers, Bare Metal Servers, and Serverless computing resources
  • In a warehouse that houses a centralized mainframe server

Question 10) Why do bare metal servers take longer to provision than virtual servers?

  • They’re multi-tenant servers, and all tenants must help configure them
  • They are physical servers that can be customized to specified capacity
  • GPUs for data analytics are hard to configure and provision
  • Customer configures the physical servers

Question 11) Containers provide isolation of applications. What is one of the benefits this provides?

  • Help keep malicious code in one container from impacting other containers
  • Abstraction from the host operating system
  • Repackaged into containers or containerized microservices
  • Open sourced runtime engine

Question 12) What makes File storage an ideal solution for scenarios where common storage (a landing zone for incoming files) is needed?

  • Mounted from remote storage appliances
  • File storage can be mounted to multiple compute nodes at a time
  • Its consistently high speed
  • File Storage is mounted to compute nodes via an ethernet network

Question 13) Which of these scenarios are best suited for Block Storage? Select two.

Note: Make sure you select all of the correct options!

  • Workloads that need low-latency storage
  • Workloads that need disk sharing between compute nodes
  • Low cost is a consideration
  • Applications that need consistent fast access to disk, such as databases

Question 14) Which of the following is NOT a good fit for Object Storage?

  • Data that does not require fast read and write speeds
  • Operating systems or applications like databases
  • Storage needs are finite and can be pre-defined
  • Files or objects that are static

Question 15) What is a Content Delivery Network (CDN)?

  • Network topology
  • A network node
  • A distributed server network
  • A network link

Question 16)What are some of the benefits of using microservices architecture? Select two.

Note: Make sure you select all of the correct options!

  • Application components can be developed and updated independently of each other
  • Each microservice of an application needs to use the same stack and runtime environment
  • Components facing varied amounts of load can be scaled independently
  • Each line of code for a microservice needs to be written from scratch

Question 17)What are the characteristics of a cloud native application?

  • Collection of microservices that need to be scaled and updated in relation to each other
  • Collection of microservices working together as a whole to comprise an application
  • Collection of microservices that are built as one huge piece of software
  • Collection of microservices with tightly coupled UI, business logic layer, and data layer

Question 18)DevOps’ tools, practices, and processes are helping tackle some of the complexities and challenges posed by the cloud. Identify two ways in which DevOps is mitigating these challenges. Select two.

Note: Make sure you select all of the correct options!

  • DevOps processes outline the development principles that need to be followed to modernize monolithic applications to cloud native applications
  • By creating an automated deployment pipeline
  • By fully automating the infrastructure installation process in a way that is documented, repeatable, verifiable, and traceable
  • DevOps best practices eliminate the need to provision servers, build middleware, and install application code

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