1Z0-1085-20 Online Practice Questions and Answers

Correct Answer: A

Oracle Functions is a fully managed, multi-tenant, highly scalable, on-demand, Functions-as-a- Service platform. It is built on enterprise-grade Oracle Cloud Infrastructure and powered by the Fn Project open source engine. Use Oracle Functions (sometimes abbreviated to just Functions) when you want to focus on writing code to meet business needs. The serverless and elastic architecture of Oracle Functions means there's no infrastructure administration or software administration for you to perform. You don't provision or maintain compute instances, and operating system software patches and upgrades are applied automatically. Oracle Functions simply ensures your app is highly-available, scalable, secure, and monitored. With Oracle Functions, you can write code in Java, Python, Node, Go, and Ruby (and for advanced use cases, bring your own Dockerfile, and Graal VM). You can then deploy your code, call it directly or trigger it in response to events, and get billed only for the resources consumed during the execution. Oracle Functions is based on Fn Project. Fn Project is an open source, container native, serverless platform that can be run anywhere - any cloud or on-premises. Fn Project is easy to use, extensible, and performant. You can download and install the open source distribution of Fn Project, develop and test a function locally, and then use the same tooling to deploy that function to Oracle Functions. You can access Oracle Functions using the Console, a CLI, and a REST API. You can invoke the functions you deploy to Oracle Functions using the CLI or by making signed HTTP requests.

Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Concepts/functionsoverview.htm

Correct Answer: C

Cloud Horizontal Scaling refers to provisioning additional servers to meet your needs, often splitting workloads between servers to limit the number of requests any individual server is getting. In a cloud-based environment, this would mean adding additional instances instead of moving to a larger instance size. Cloud Vertical Scaling refers to adding more CPU or memory to an existing server, or replacing one server with a more powerful server.

Reference: https://cloudcheckr.com/cloud-cost-management/cloud-vs-data-center-what-is-scalability-in-cloudcomputing/ Horizontal scaling means that you scale by adding more machines into your pool of resources whereas Vertical scaling means that you scale by adding more power (CPU, RAM) to an existing machine. An easy way to remember this is to think of a machine on a server rack, we add more machines across the horizontal direction and add more resources to a machine in the vertical direction.

With horizontal-scaling it is often easier to scale dynamically by adding more machines into the existing pool -- Vertical-scaling is often limited to the capacity of a single machine, scaling beyond that capacity often involves downtime and comes with an upper limit. Reference: https://medium.com/@abhinavkorpal/scaling-horizontally-and-vertically-for-databases- a2aef778610c

Correct Answer: A

A fault domain is a grouping of hardware and infrastructure within an availability domain. Each availability

domain contains three fault domains. Fault domains provide anti-affinity: they let you distribute your

instances so that the instances are not on the same physical hardware within a single availability domain.

A hardware failure or Compute hardware maintenance event that affects one fault domain does not affect

instances in other fault domains. In addition, the physical hardware in a fault domain has independent and

redundant power supplies, which prevents a failure in the power supply hardware within one fault domain

from affecting other fault domains.

Usually fault domains to do the following things:

1) Protect against unexpected hardware failures or power supply failures.

2) Protect against planned outages because of Compute hardware maintenance.

Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/General/Concepts/regions.htm

Correct Answer: A

Oracle Cloud Infrastructure Container Engine for Kubernetes is a fully-managed, scalable, and highly available service that you can use to deploy your containerized applications to the cloud. Use Container Engine for Kubernetes (sometimes abbreviated to just OKE) when your development team wants to reliably build, deploy, and manage cloud-native applications. You specify the compute resources that your applications require, and Container Engine for Kubernetes provisions them on Oracle Cloud Infrastructure in an existing OCI tenancy. Container Engine for Kubernetes uses Kubernetes - the open-source system for automating deployment, scaling, and management of containerized applications across clusters of hosts. Kubernetes groups the containers that make up an application into logical units (called pods) for easy management and discovery. You can access Container Engine for Kubernetes to define and create Kubernetes clusters using the Console and the REST API. You can access the clusters you create using the Kubernetes command line (kubectl), the Kubernetes Dashboard, and the Kubernetes API. Container Engine for Kubernetes is integrated with Oracle Cloud Infrastructure Identity and Access Management (IAM), which provides easy authentication with native Oracle Cloud Infrastructure identity functionality.

Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/ContEng/Concepts/contengoverview.htm

Correct Answer: C

https://www.oracle.com/assets/paas-iaas-pub-cld-srvs-pillar-4021422.pdf Enterprises demand more than just availability from their cloud infrastructure. Mission-critical workloads also require consistent performance, and the ability to manage, monitor, and modify resources running in the cloud at any time. Only Oracle offers end-to-end SLAs covering performance, availability, manageability of services.

Reference: https://www.oracle.com/in/cloud/iaas/sla.html

Correct Answer: BCF

DATA ENCRYPTION

Protect customer data at-rest and in-transit in a way that allows customers to meet their security and

compliance requirements for cryptographic algorithms and key management The Oracle Cloud

Infrastructure Block Volume service always encrypts all block volumes, boot volumes, and volume backups

at rest by using the Advanced Encryption Standard (AES) algorithm with 256-bit encryption. By default all

volumes and their backups are encrypted using the Oracle- provided encryption keys. Each time a volume

is cloned or restored from a backup the volume is assigned a new unique encryption key.

The File Storage service encrypts all file system and snapshot data at rest. By default all file systems are

encrypted using Oracle-managed encryption keys. You have the option to encrypt all of your file systems

using the keys that you own and manage using the Vault service. Object Storage employs 256-bit

Advanced Encryption Standard (AES-256) to encrypt object data on the server. Each object is encrypted

with its own data encryption key. Data encryption keys are always encrypted with a master encryption key

that is assigned to the bucket. Encryption is enabled by default and cannot be turned off. By default, Oracle

manages the master encryption key.

Reference:

https://docs.cloud.oracle.com/en-us/iaas/Content/Block/Concepts/overview.htm https://

docs.cloud.oracle.com/en-us/iaas/Content/Object/Concepts/objectstorageoverview.htm https://

docs.cloud.oracle.com/en-us/iaas/Content/File/Concepts/filestorageoverview.htm

Oracle Cloud Infrastructure Key Management is a managed service that enables you to encrypt your data

using keys that you control.IAM, Autoscaling and functions cannot be used with Key Management and

hence are incorrect options.

Reference:

https://docs.cloud.oracle.com/en-us/iaas/Content/KeyManagement/Concepts/keyoverview.htm

Correct Answer: A

Oracle Cloud Infrastructure File Storage service provides a durable, scalable, secure, enterprise-grade network file system. You can connect to a File Storage service file system from any bare metal, virtual machine, or container instance in your Virtual Cloud Network (VCN). You can also access a file system from outside the VCN using Oracle Cloud Infrastructure FastConnect and Internet Protocol security (IPSec) virtual private network (VPN). Large Compute clusters of thousands of instances can use the File Storage service for high- performance shared storage. Storage provisioning is fully managed and automatic as your use scales from a single byte to exabytes without upfront provisioning.

Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/File/Concepts/filestorageoverview.htm

Correct Answer: BD

OCI leverages advanced encryption that leads to fast performance, OCI does not over subscribe CPU, but only memory, and OCI hypervisor provides industry leading performance are WRONG. However, OCI does back claims with SLAs and offers predictable pricing for all services. Reference: https://www.oracle.com/cloud/iaas/sla.html https://www.oracle.com/in/cloud/pricing.html

Correct Answer: C

APPLIANCE-BASED DATA TRANSFER You send your data as files on secure, high-capacity, Oracle-supplied storage appliances to an Oracle transfer site. Operators at the Oracle transfer site upload the data into your designated Object Storage bucket in your tenancy. This solution supports data transfer when you are migrating a large volume of data and when using disks is not a practical alternative. You do not need to write any code or purchase any hardware. Oracle supplies the transfer appliance and software required to manage the transfer. https:// docs.cloud.oracle.com/en-us/iaas/Content/DataTransfer/Concepts/overview.htm Oracle Cloud Infrastructure Data Transfer Appliance securely moves terabytes or petabytes data between on- premise data centers and the cloud. The service reduces data migration times from weeks or months to just hours and is available for data import to the cloud and data export from the cloud.

Reference: https://www.oracle.com/in/cloud/storage/data-transfer.html

Correct Answer: C

Oracle Cloud Infrastructure Identity and Access Management (IAM) lets you control who has access to your cloud resources. You can control what type of access a group of users have and to which specific resources. This section gives you an overview of IAM components and an example scenario to help you understand how they work together.

Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Identity/Concepts/overview.htm