Oracle 1Z0-1085-22 Online Practice Questions and Exam Preparation

Oracle 1Z0-1085-22 Online Questions & Answers

• Question 1:

  In what two ways does Oracle Cloud Infrastructure (OCI) offer industry leading price-performance?

  A. OCI leverages advanced encryption that results In fast performance
  B. With OCI, pricing Is low and predictable across all regions and services.
  C. OCI hypervisor provides Industry loading performance.
  D. OCI backs performance claims with Service Level Agreements.
  E. OCI does not over subscribe CPU, but only memory.
  B. With OCI, pricing Is low and predictable across all regions and services.
  D. OCI backs performance claims with Service Level Agreements.

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  Explanation/Reference:

  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

• Question 2:

  Which two should be considered when designing a fault tolerant solution in Oracle Cloud Infrastructure (OCI)?

  A. ensuring your solution components are distributed across OCI Fault Domains
  B. performing data integrity check when using OCI File Storage Service
  C. writing custom scripts that will monitor your solution
  D. using multiple OCI Availability Domains (AD), where available, to deploy your solution
  E. creating a manual cluster of compute instances
  A. ensuring your solution components are distributed across OCI Fault Domains
  D. using multiple OCI Availability Domains (AD), where available, to deploy your solution

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  Explanation/Reference:

  Creating a manual cluster of compute instances, and Writing custom scripts that will monitor your solution are not valid ways to ensure fault tolerance at all. Also, Performing Data Integrity check when using OCI File Storage Service is not

  valid since OCI takes care of it.

  Therefore, we are left with:

  1) Using multiple OCI Availibility Domains (AD), where available, to deploy your solution - Which is excellent because we have multiple AD's so that if one fails, we have a backup AD!

  2) Ensuring your solution components are distributed across OCI Fault Domains - So that we can protect our deployment against unexpected power failures, AD failure etc.

  Reference:

  https://blogs.oracle.com/cloud-infrastructure/using-availibility-domains-and-fault-domains-to- improve-application-resiliency

• Question 3:

  A customer wants to deploy a customized e commerce Web application using multiple virtual machines, block storage, databases, load balancer and web application firewall. What cloud model can be used to host this application?

  A. Software as a Service (SaaS)
  B. Platform as a Service (PaaS)
  C. Anything as a Service (XaaS)
  D. Infrastructure as a Service (IaaS)
  D. Infrastructure as a Service (IaaS)

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  Explanation/Reference:

  https://www.oracle.com/cloud/what-is-iaas/

  What Is IaaS?

  Infrastructure as a service (IaaS) is a type of cloud service model in which computing resources are hosted in the cloud. Businesses can use the IaaS model to shift some or all of their use of on- premises or colocated data center

  infrastructure to the cloud, where it is owned and managed by a cloud provider. These infrastructure elements can include compute, network, and storage hardware as well as other components and software. In the IaaS model, the cloud

  provider owns and operates the hardware and software and also owns or leases the data center. When you have an IaaS solution, you rent the resources like compute or storage, provision them when needed, and pay for the resources your

  organization consumes. For some resources such as compute, you'll pay for the resources you use. For others such as storage, you'll pay for capacity.

  How Does IaaS Work?

  In a typical IaaS model, a business--which can be of any size--consumes services like compute, storage, and databases from a cloud provider. The cloud provider offers those services by hosting hardware and software in the cloud. The

  business will no longer need to purchase and manage its own equipment, or space to host the equipment, and the cost will shift to a pay-as-you-go model. When the business needs less, it pays for less. And when it grows, it can provision

  additional computing resources and other technologies in minutes. In contrast, in a traditional on-premises scenario, a business manages and maintains its own data center. The business must invest in servers, storage, software, and other

  technologies, and hire an IT staff or contractors to purchase, manage, and upgrade all the equipment and licenses. The data center has to be built to meet peak demand, even though sometimes workloads decline and those resources stand

  idle. Conversely, if the business grows quickly, the IT department might struggle to keep up.

  Reference:

  https://www.oracle.com/in/cloud/what-is-iaas/

• Question 4:

  Which OCI service is the most cost-effective?

  A. File Storage
  B. Object Storage (standard)
  C. Block Volume
  D. Archive Storage
  B. Object Storage (standard)

• Question 5:

  A customer is looking to migrate their old database backups from their on-premises data center to Oracle Cloud Infrastructure (OCI). Which OCI service is the most cost-effective?

  A. Block Volume
  B. Archive Storage
  C. File Storage
  D. Object Storage (standard)
  B. Archive Storage

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  Explanation/Reference:

  Archive storage is the most cost effective for archive data Reference:

  https://www.oracle.com/cloud/storage/archive-storage.html Oracle Cloud Infrastructure offers two distinct storage class tiers to address the need for both performant, 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 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 offsets the long lead time required to access the data.

  2) Use Object Storage for data to which you need fast, immediate, and frequent access. Data accessibility and performance justifies a higher price to store data in the Object Storage. For more information, see Overview of Object Storage.

  

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

• Question 6:

  You run 5 Oracle Cloud Infrastructure (OCI) Virtual Machine instances on an OCI dedicated virtual host. How will this deployment be billed?

  A. Only the dedicated virtual machine host will be billed
  B. The dedicated virtual machine host and the boot volumes of each instance will be billed
  C. The dedicated virtual machine host all 5 instances, and the boot volume of each instance will be billed
  D. All 5 instances will be billed on the basis of the number of OCPUs
  B. The dedicated virtual machine host and the boot volumes of each instance will be billed

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  Explanation/Reference:

  You must create a dedicated virtual machine host before you can place any instances on it. When creating the dedicated virtual machine host, you select an availability domain and fault domain to launch it in. All the VM instances that you place on the host will subsequently be created in this availability domain and fault domain. You also select a compartment when you create the dedicated virtual machine host, but you can move the host to a new compartment later without impacting any of the instances placed on it. You can also create the instances in a different compartment than the dedicated virtual machine host, or move them to difference compartments after they have been launched. You are billed for the dedicated virtual machine host as soon as you create it, but you are not billed for any of the individual VM instances you place on it. You will still be billed for image licensing costs if they apply to the image you are using for the VM instances.

  Read more: https://docs.cloud.oracle.com/en-us/iaas/Content/Compute/Concepts/dedicatedvmhosts.htm

• Question 7:

  You have a mission-critical application which requires 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.
  A. Use multiple Fault Domains In each Availability Domain in each Region.

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  Explanation/Reference:

  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. 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 8:

  What two statements regarding the Virtual Cloud Network (VCN) are true?

  A. A single VCN can contain both private and public Subnets.
  B. VCN is a regional resource that span across all the Availability Domains in a Region.
  C. You can only create one VCN per region.
  D. The VCN is the IPSec-based connection with a remote on premises location.
  E. VCN is a global resource that span across all the Regions
  A. A single VCN can contain both private and public Subnets.
  B. VCN is a regional resource that span across all the Availability Domains in a Region.

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  Explanation/Reference:

  When you work with Oracle Cloud Infrastructure, one of the first steps is to set up a virtual cloud network (VCN) for your cloud resources.

  VIRTUAL CLOUD NETWORK (VCN) :

  A virtual, private network that you set up in Oracle data centers. It closely resembles a traditional network, with firewall rules and specific types of communication gateways that you can choose to use. A VCN resides in a single Oracle Cloud

  Infrastructure region and covers a single, contiguous IPv4 CIDR block of your choice. See Allowed VCN Size and Address Ranges. The terms virtual cloud network, VCN, and cloud network are used interchangeably in this documentation.

  For more information, see VCNs and Subnets.

  SUBNETS :

  Subdivisions you define in a VCN (for example, 10.0.0.0/24 and 10.0.1.0/24). Subnets contain virtual network interface cards (VNICs), which attach to instances. Each subnet consists of a contiguous range of IP addresses that do not overlap

  with other subnets in the VCN. You can designate a subnet to exist either in a single availability domainavailability domain or across an entire region (regional subnets are recommended). Subnets act as a unit of configuration within the VCN:

  All VNICs in a given subnet use the same route table, security lists, and DHCP options (see the definitions that follow). You can designate a subnet as either public or private when you create it. Private means VNICs in the subnet can't have

  public IP addresses. Public means VNICs in the subnet can have public IP addresses at your discretion. See Access to the Internet.

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

• Question 9:

  After Signing up for a new Oracle cloud Infrastructure tenancy, what would you subscribe to in order to deploy infrastructure and services in different parts of the world?

  A. Availability Domain
  B. Fault Domains
  C. Pay as you go pricing
  D. Region
  D. Region

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  Explanation/Reference:

  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. Most Oracle Cloud Infrastructure resources are either region-specific, such as a virtual cloud network, or availability domain-specific, such as a compute instance. Traffic between availability domains and between regions is encrypted. 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. The availability domains within the same region are connected to each other by a low latency, high bandwidth network, which makes it possible for you to provide high-availability connectivity to the internet and on-premises, and to build replicated systems in multiple availability domains for both high-availability and disaster recovery. Oracle is adding multiple cloud regions around the world to provide local access to cloud resources for our customers. To accomplish this quickly, we've chosen to launch regions in new geographies with one availability domain. As regions require expansion, we have the option to add capacity to existing availability domains, to add additional availability domains to an existing region, or to build a new region. The expansion approach in a particular scenario is based on customer requirements as well as considerations of regional demand patterns and resource availability.

  For any region with one availability domain, a second availability domain or region in the same country or geo-political area will be made available within a year to enable further options for disaster recovery that support customer requirements

  for data residency where they exist.

  Reference:

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

• Question 10:

  Which is NOT a valid business benefit for a customer considering migrating their infrastructure and apps to Oracle Cloud Infrastructure (OCI)?

  A. Faster go-to market
  B. Capital Expenditure to Operational Expenditure conversion
  C. Greater agility
  D. Increased Total Cost of Ownership (TCO)
  D. Increased Total Cost of Ownership (TCO)

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  Explanation/Reference:

  Oracle Cloud Infrastructure is a set of complementary cloud services that enable you to build and run a wide range of applications and services in a highly available hosted environment. Oracle Cloud Infrastructure offers high-performance

  compute capabilities (as physical hardware instances) and storage capacity in a flexible overlay virtual network that is securely accessible from your on- premises network.

  Reference:

  https://docs.cloud.oracle.com/en-us/iaas/Content/GSG/Concepts/baremetalintro.htm

  One of the major benefits of cloud computing is REDUCED TCO. Therefore, Increased TCO is the incorrect option.

  https://www.oracle.com/partners/en/partner-with-oracle/develop-solutions/why/increase-value- reduce-cost-3907933.pdf