Lead4Pass 1Z0-1085-22 Exam Dumps Real Study Guide – Feb 2023-02
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Question 1:
A company has developed an eCommerce web application In Oracle Cloud Infrastructure. What should they do to ensure that the application has the highest level of resilience?
A. Deploy the application across multiple Regions and Availability Domains.
B. Deploy the application across multiple Availability Domains and subnets.
C. Deploy the application across multiple Virtual Cloud Networks.
D. Deploy the application across multiple Availability Domains and Fault Domains.
Correct Answer: A
For the highest level of resilience, you can deploy the application between regions and distribute it on availability domain and fault domains.
Reference: https://www.oracle.com/cloud/iaas/faq.html
Question 2:
You have a mission-critical application that requires it to be globally available at all times. Which deployment strategy should you adopt?
A. Use multiple Fault Domains In each Availability Domain in each Region.
B. Use multiple Availability Domains In one Region.
C. Use multiple Fault Domains In one Region.
D. Use multiple Fault Domains in any Availability Domain in multiple Regions.
Correct Answer: A
Oracle Cloud Infrastructure is hosted in regions and availability domains. A region is a localized geographic area, and an availability domain is one or more data centers located within a region. A region is composed of one or more availability domains. Regions are independent of other regions and can be separated by vast distances–across countries or even continents.
Availability domains are isolated from each other, fault-tolerant, and very unlikely to fail simultaneously. Because availability domains do not share infrastructure such as power or cooling, or the internal availability domain network, a failure at one availability domain within a region is unlikely to impact the availability of the others within the same region.
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.
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/General/Concepts/regions.htm
Question 3:
Which Oracle Cloud Infrastructure service allows you to run code without provisioning any underlying infrastructure resources?
A. Compute service
B. Storage Gateway
C. Oracle Container Engine for Kubernetes D. Oracle Functions
Correct Answer: D
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.
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Concepts/functionsoverview.htm
Question 4:
Which CANNOT be used with My Oracle Support (MOS)?
A. Add or change a tenancy administrator
B. Request a Service Limit Increase
C. Reset the password or unlock the account for the tenancy administrator
D. Troubleshoot your resources in an Oracle Cloud Infrastructure Free Trial account
Correct Answer: D
Open a support service request with the MOS option available to paid accounts. Customers using only Always Free resources are not eligible for Oracle Support. Limited support is available to Free Tier accounts with Free Trial credits.
After you use all of your credits or after your trial period ends (whichever comes first), you must upgrade to a paid account to access Oracle Support. If you choose not to upgrade and continue to use Always Free Services, you will not be eligible to raise a service request in My Oracle Support.
In addition to supporting technical issues, use My Oracle Support if you need to:
1. Reset the password or unlock the account for the tenancy administrator
2. Add or change a tenancy administrator
3. Request a service limit increase
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/GSG/Tasks/contactingsupport.htm
Question 5:
Which is a key benefit of using oracle cloud infrastructure autonomous data warehouse?
A. No username and password are required
B. Scale both CPU and Storage without downtime
C. Apply database patches as they become available D. Maintain root-level access to the underlying operating system
Correct Answer: B
Oracle Autonomous Data Warehouse is a cloud data warehouse service that eliminates virtually all the complexities of operating a data warehouse and securing data. It automates provisioning, configuring, securing, tuning, scaling, patching, backing up, and repairing the data warehouse.
Unlike other “fully managed” cloud data warehouse solutions that only patch and update the service, it also features elastic, automated scaling, performance tuning, security, and a broad set of built-in capabilities that enable machine learning analysis, simple data loading, and data visualizations.
Data Warehouse uses continuous query optimization, table indexing, data summaries, and auto-tuning to ensure consistent high performance even as data volume and the number of users grow. Autonomous scaling can temporarily increase compute and I/O by a factor of three to maintain performance.
Unlike other cloud services which require downtime to scale, Autonomous Data Warehouse scales while the service continues to run.
Reference: https://www.oracle.com/autonomous-database/autonomous-data-warehouse/
Question 6:
Which three components are part of Oracle Cloud Infrastructure (OCI) identity and access management service?
A. Regional Subnets
B. Policies
C. Users
D. Compute Instances
E. Dynamic Groups
F. Roles
G. Virtual Cloud Networks
Correct Answer: BCE
Components of IAM IAM uses the components described in this section. To better understand how the components fit together, see Example Scenario. RESOURCE The cloud objects that your company\’s employees create and use when interacting with Oracle Cloud Infrastructure.
For example: compute instances, block storage volumes, virtual cloud networks (VCNs), subnets, route tables, etc. USER An individual employee or system that needs to manage or use your company\’s Oracle Cloud Infrastructure resources. Users might need to launch instances, manage remote disks, work with your virtual cloud network, etc.
End users of your application are not typically IAM users. Users have one or more IAM credentials (see User Credentials).
GROUP A collection of users who all need the same type of access to a particular set of resources or compartments. DYNAMIC GROUP A special type of group that contains resources (such as compute instances) that match rules that you define (thus the membership can change dynamically as matching resources are created or deleted).
These instances act as “principal” actors and can make API calls to services according to policies that you write for the dynamic group. NETWORK SOURCE A group of IP addresses that are allowed to access resources in your tenancy. The IP addresses can be public IP addresses or IP addresses from a VCN within your tenancy. After you create the network source, you use policy to restrict access to only requests that originate from the IPs in the network source.
COMPARTMENT A collection of related resources. Compartments are a fundamental component of Oracle Cloud Infrastructure for organizing and isolating your cloud resources. You use them to clearly separate resources for the purposes of measuring usage and billing, access (through the use of policies), and isolation (separating the resources for one project or business unit from another).
A common approach is to create a compartment for each major part of your organization. For more information, see Setting Up Your Tenancy. TENANCY The root compartment that contains all of your organization\’s Oracle Cloud Infrastructure resources.
Oracle automatically creates your company\’s tenancy for you. Directly within the tenancy are your IAM entities (users, groups, compartments, and some policies; you can also put policies into compartments inside the tenancy).
You place the other types of cloud resources (e.g., instances, virtual networks, block storage volumes, etc.) inside the compartments that you create. POLICY A document that specifies who can access which resources, and how.
Access is granted at the group and compartment level, which means you can write a policy that gives a group a specific type of access within a specific compartment, or to the tenancy itself. If you give a group access to the tenancy, the group automatically gets the same type of access to all the compartments inside the tenancy.
For more information, see Example Scenario and How Policies Work. The word “policy” is used by people in different ways:
to mean an individual statement written in the policy language; to mean a collection of statements in a single, named “policy” document (which has an Oracle Cloud ID (OCID) assigned to it); and to mean the overall body of policies your organization uses to control access to resources.
HOME REGION The region where your IAM resources reside. All IAM resources are global and available across all regions, but the master set of definitions resides in a single region, the home region.
You must make changes to your IAM resources in your home region. The changes will be automatically propagated to all regions. For more information, see Managing Regions. FEDERATION A relationship that an administrator configures between an identity provider and a service provider.
When you federate Oracle Cloud Infrastructure with an identity provider, you manage users and groups in the identity provider. You manage authorization in Oracle Cloud Infrastructure\’s IAM service. Oracle Cloud Infrastructure tenancies are federated with Oracle Identity Cloud Service by default.
https://docs.cloud.oracle.com/en-us/iaas/Content/Identity/Concepts/overview.htm
Question 7:
A customer wants to use Oracle Cloud Infrastructure (OCI) for storing application backups which can be
stored based on business needs.
Which OCI storage service can be used to meet the requirement?
A. File Storage
B. Block Volume
C. Archive Storage
D. Object Storage (standard)
Correct Answer: D
Oracle Cloud Infrastructure offers two distinct storage class tiers to address the need for both performances, frequently accessed “hot” storage, and less frequently accessed “cold” storage. Storage tiers help you maximize performance where appropriate and minimize costs where possible. 1) Use Object Storage for data to which you need fast, immediate, and frequent access.
Data accessibility and performance justify a higher price to store data in the Object Storage tier. 2) Use Archive Storage for data to which you seldom or rarely access, but that must be retained and preserved for long periods of time. The cost efficiency of the Archive Storage tier offsets the long lead time required to access the data. For more information, see Overview of Archive Storage.
The Oracle Cloud Infrastructure Object Storage service is an internet-scale, high-performance storage platform that offers reliable and cost-efficient data durability. The Object Storage service can store an unlimited amount of unstructured data of any content type, including analytic data and rich content, like images and videos.
With Object Storage, you can safely and securely store or retrieve data directly from the internet or from within the cloud platform.
Object Storage offers multiple management interfaces that let you easily manage storage at scale. The elasticity of the platform lets you start small and scale seamlessly, without experiencing any degradation in performance or service reliability. Object Storage is a regional service and is not tied to any specific computing instance.
You can access data from anywhere inside or outside the context of the Oracle Cloud Infrastructure, as long you have internet connectivity and can access one of the Object Storage endpoints.
Authorization and resource limits are discussed later in this topic. Object Storage also supports private access from Oracle Cloud Infrastructure resources in a VCN through a service gateway. A service gateway allows connectivity to the Object Storage public endpoints from private IP addresses in private subnets.
For example, you can back up DB systems to an Object Storage bucket over the Oracle Cloud Infrastructure backbone instead of over the internet.
You can optionally use IAM policies to control which VCNs or ranges of IP addresses can access Object Storage. See Access to Oracle Services: Service Gateway for details. Object Storage is Always Free and eligible.
For more information about Always Free resources, including additional capabilities and limitations, see Oracle Cloud Infrastructure Free Tier. The following list summarizes some of the ways that you can use Object Storage.
Open a support service request with the MOS option available to paid accounts. Customers using only Always Free resources are not eligible for Oracle Support. Limited support is available to Free Tier accounts with Free Trial credits. After you use all of your credits or after your trial period ends (whichever comes first), you must upgrade to a paid account to access Oracle Support.
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Object/Concepts/objectstorageoverview.htm
Question 8:
Which Oracle Cloud Infrastructure (OCI) service is best suited for running serverless apps?
A. Oracle Functions
B. Virtual Cloud Network
C. Streaming
D. Audit
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
Question 9:
What does compute instance horizontal scaling mean?
A. stopping/starting the instance
B. backing up data to object storage
C. adding additional compute instances
D. changing compute instance size
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
Question 10:
OCI budgets can be set on which two options?
A. Cost-tracking tags
B. Free-form tags
C. Compartments
D. Virtual Cloud Network
E. Tenancy
Correct Answer: AC
In OCI a budget can be used to set soft limits on your Oracle Cloud Infrastructure spending. You can set alerts on your budget to let you know when you might exceed your budget, and you can view all of your budgets and spending from one single place in the Oracle Cloud Infrastructure console. Budgets are set on
1. Cost-tracking tags
2. Compartments (including the root compartment)
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Billing/Concepts/budgetsoverview.htm
Question 11:
you are analyzing your Oracle Cloud Infrastructure (OCI) usage with the Cost Analysis tool in OCI Console. Which is not a default feature of the tool?
A. Filter costs by applications
B. Filter costs by compartments
C. Filter posts by tags
D. Filter posts by date
Correct Answer: A
You can filter Costs Analysis Tools by following three ways To filter costs by dates To filter costs by tags To filter costs by compartments
Reference: https://www.oracle.com/a/ocom/docs/cloud/ops-billing-100.pdf
Question 12:
Which OCI Identity and access management capability helps you to organize multiple users into teams?
A. Policies
B. Groups
C. Dynamic Groups
D. Users
Correct Answer: B
IAM Group is A collection of users who all need the same type of access to a particular set of resources or compartments. IAM DYNAMIC GROUP is A special type of group that contains resources (such as compute instances) that match rules that you define (thus the membership can change dynamically as matching resources are created or deleted).
These instances act as “principal” actors and can make API calls to services according to policies that you write for the dynamic group.
Reference:
https://docs.cloud.oracle.com/en-us/iaas/Content/Identity/Concepts/overview.htm GROUP:
A collection of users who all need the same type of access to a particular set of resources or compartments.
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Identity/Tasks/managinggroups.htm
Question 13:
What is the frequency of OCI usage report generation?
A. Weekly
B. Monthly
C. Annually
D. Daily
Correct Answer: D
A usage report is a comma-separated value (CSV) file that can be used to get a detailed breakdown of resources in Oracle Cloud Infrastructure for audit or invoice reconciliation. The usage report is automatically generated daily and is stored in an Oracle-owned Object Storage bucket.
It contains one row per each Oracle Cloud Infrastructure resource (such as instance, Object Storage bucket, VNIC) per hour along with consumption information, metadata, and tags.
Usage reports generally contain 24 hours of usage data, although occasionally a usage report may contain late-arriving data that is older than 24 hours. Usage reports are retained for one year.
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Billing/Concepts/billingoverview.htm https:// docs.cloud.oracle.com/en-us/iaas/Content/Billing/Concepts/usagereportsoverview.htm
Question 14:
Which service is the most effective for moving large amounts of data from your on-premises to OCI?
A. Data Transfer appliance
B. Data Safe
C. Internal Gateway
D. Dynamic Routing Gateway
Correct Answer: A
Question 15:
Which capability can be used to protect against unexpected hardware or power supply failures within an availability domain?
A. Fault Domains
B. Compartments
C. Top of Rack Switches
D. Power Distribution Units
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 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
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