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Introduction to Cloud Cognitive Class Exam Quiz Answers

Introduction to Cloud Cognitive Class Certification Answers

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
  • Five essential characteristics, three deployment models, three service models
  • Data security, associated with loss or unavailability of data causing business disruption
  • Networks, servers, storage, applications, and services

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.

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

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

  • AI consumes the data produced by IoT devices
  • 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
  • Power, scale, dynamic nature, and economics of the cloud resources

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

  • Lends trust and transparency to AI by recording the data and variables that go into a decision made in an AI algorithm.
  • An immutable network allowing members to view only those transactions that are relevant to them.
  • Globally distributed, scalable, and cost-efficient computing resources.
  • 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.

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?

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

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?

  • Yes, Virtualization makes it possible— to have VMs, running different operating systems, on a single host.
  • No, it is not possible—A single host can only work as one single virtual environment, and can, therefore, have only one environment.
  • 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?

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

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
  • Object storage
  • Block storage

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

  • 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.
  • Network topology

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?

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

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

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

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

  • Broad Network Access
  • Private
  • Hybrid
  • 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?

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

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?

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

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

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

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

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

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

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

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

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

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

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
  • Files or objects that are static
  • Operating systems or applications like databases
  • Storage needs are finite and can be pre-defined

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

  • Network Topology
  • A distributed Server Network
  • A Network Link
  • A Network Node

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

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

Introduction to Cloud

Cloud computing is a revolutionary technology that has transformed the way businesses and individuals access and utilize computing resources. At its core, cloud computing refers to the delivery of computing services—including servers, storage, databases, networking, software, and more—over the internet (“the cloud”). Instead of owning and maintaining physical hardware and infrastructure, users can simply access these resources on-demand from cloud service providers.

Here’s a breakdown of some key concepts and benefits of cloud computing:

  1. On-Demand Self-Service: Cloud computing enables users to provision computing resources, such as server instances or storage, as needed without requiring human intervention from the service provider.
  2. Scalability: Cloud resources can scale up or down based on demand. This means businesses can easily adjust their computing resources to accommodate fluctuations in workload without worrying about hardware constraints.
  3. Resource Pooling: Cloud providers pool and allocate resources across multiple users, allowing for more efficient utilization and cost savings. Users typically pay only for the resources they consume.
  4. Broad Network Access: Cloud services are accessible over the internet from any device with an internet connection, providing ubiquitous access to computing resources.
  5. Measured Service: Cloud computing services are typically metered, meaning users are billed based on their usage of resources like storage, processing power, and bandwidth. This pay-as-you-go model offers cost transparency and flexibility.
  6. Service Models: Cloud computing offers various service models, including:
    • Infrastructure as a Service (IaaS): Provides virtualized computing resources over the internet, such as virtual machines, storage, and networking.
    • Platform as a Service (PaaS): Offers a platform allowing customers to develop, run, and manage applications without dealing with the underlying infrastructure.
    • Software as a Service (SaaS): Delivers software applications over the internet on a subscription basis, eliminating the need for users to install and maintain software locally.
  7. Deployment Models: Cloud computing can be deployed in different ways:
    • Public Cloud: Services are provided over the public internet and are available to anyone who wants to use or purchase them.
    • Private Cloud: Cloud infrastructure is operated solely for a single organization and is not shared with other organizations.
    • Hybrid Cloud: Combines public and private cloud resources, allowing data and applications to be shared between them.
  8. Security and Compliance: Cloud providers invest heavily in security measures to protect data and infrastructure. However, users are still responsible for securing their own applications and data within the cloud environment and ensuring compliance with relevant regulations.

Overall, cloud computing offers unparalleled flexibility, scalability, and cost-effectiveness, empowering businesses to innovate and grow without the constraints of traditional IT infrastructure.

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