Authentic Oracle 1z0-1085-23 Exam Dumps PDF - 2023 Updated
Get Prepared for Your 1z0-1085-23 Exam With Actual 187 Questions
NEW QUESTION # 108
Which two are enabled by Oracle Cloud Infrastructure Fault Domains?
- A. To meet requirements for legal jurisdictions
- B. Build replicated systems for disaster recovery
- C. To mitigate the risk of large scale events such as earthquakes
- D. Protect against planned hardware maintenance
- E. Protect against unexpected hardware or power supply failures
Answer: D,E
Explanation:
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.
To control the placement of your compute instances, bare metal DB system instances, or virtual machine DB system instances, you can optionally specify the fault domain for a new instance or instance pool at launch time. If you don't specify the fault domain, the system selects one for you. Oracle Cloud Infrastructure makes a best-effort anti-affinity placement across different fault domains, while optimizing for available capacity in the availability domain. To change the fault domain for an instance, terminate it and launch a new instance in the preferred fault domain.
Use fault domains to do the following things:
Protect against unexpected hardware failures or power supply failures.
Protect against planned outages because of Compute hardware maintenance.
We can use 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
NEW QUESTION # 109
Which option provides the best performance for running OLTP workloads in Oracle Cloud Infrastructure?
- A. OCI Dedicated Virtual Host
- B. OCI Autonomous Data Warehouse
- C. OCI Exadata DB Systems
- D. OCI Virtual Machine Instance
Answer: C
Explanation:
Explanation
On an Exadata DB system, all databases share dedicated storage servers which include flash storage. By default, the databases are given equal priority with respect to these resources. The Exadata storage management software uses a first come, first served approach for query processing. If a database executes a major query that overloads I/O resources, overall system performance can be slowed down.
The I/O Resource Management (IORM) allows you to assign priorities to your databases to ensure critical queries are processed first when workloads exceed their resource allocations. You assign priorities by creating directives that specify the number of shares for each database. The number of shares corresponds to a percentage of resources given to that database when I/O resources are stressed.
Directives work together with an overall optimization objective you set for managing the resources. The following objectives are available:
1) Auto - Recommended. IORM determines the optimization objective and continuously and dynamically determines the optimal settings, based on the workloads observed, and resource plans enabled.
2) Balanced - For critical OLTP and DSS workloads. This setting balances low disk latency and high throughput. This setting limits disk utilization of large I/Os to a lesser extent than low latency to achieve a balance between good latency and good throughput.
3) High throughput - For critical DSS workloads that require high throughput.
4) Low latency - For critical OLTP workloads. This setting provides the lowest possible latency by significantly limiting disk utilization.
NEW QUESTION # 110
You want to migrate mission-critical Oracle E- Business Suite application to Oracle Cloud Infrastructure (OCI) with full control and access to the underlying infrastructure.
Which option meets this requirement?
- A. OCI Exadata DB Systems and OCI compute instances
- B. Oracle Exadata Cloud at customer, Storage Gateway and API Gateway
- C. OCI Exadata DB Systems and Oracle Functions
- D. Replace E-Business Suite with an Oracle SaaS application
Answer: A
NEW QUESTION # 111
What does compute instance horizonal scaling mean?
- A. stopping/starting the instance
- B. adding additional compute instances
- C. backing up data to object storage
- D. changing compute instance size
Answer: B
Explanation:
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-cloud-computing/ 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.
NEW QUESTION # 112
Which Oracle Cloud Infrastructure (OCI) database solution will be most economical for a customer looking to have the elasticity of the cloud with minimal administration and maintenance effort for their DBA team?
- A. OCI Autonomous Database
- B. OCI Bare Metal DB Systems
- C. OCI Virtual Machine DB Systems
- D. OCI Exadata DB Systems.
Answer: D
Explanation:
Exadata DB systems allow you to leverage the power of Exadata within the Oracle Cloud Infrastructure. An Exadata DB system consists of a base system, quarter rack, half rack, or full rack of compute nodes and storage servers, tied together by a high-speed, low-latency InfiniBand network and intelligent Exadata software. You can configure automatic backups, optimize for different workloads, and scale up the system to meet increased demands.
Oracle now offers the Zero Downtime Migration service, a quick and easy way to move on-premises Oracle Databases and Oracle Cloud Infrastructure Classic databases to Oracle Cloud Infrastructure. You can migrate databases to the following types of Oracle Cloud Infrastructure systems: Exadata, Exadata Cloud@Customer, bare metal, and virtual machine.
Zero Downtime Migration leverages Oracle Active Data Guard to create a standby instance of your database in an Oracle Cloud Infrastructure system. You switch over only when you are ready, and your source database remains available as a standby. Use the Zero Downtime Migration service to migrate databases individually or at the fleet level. See Move to Oracle Cloud Using Zero Downtime Migration for more information.
NEW QUESTION # 113
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 Availability Domains and subnet.
- B. Deploy the application across multiple Virtual Cloud Networks.
- C. Deploy the application across multiple Availability Domains and Fault Domains.
- D. Deploy the application across multiple Regions and Availability Domains.
Answer: D
Explanation:
For highest level of resilience you can deploy the application between regions and distribute on availability domain and fault domains.
Reference:
https://www.oracle.com/cloud/iaas/faq.html
NEW QUESTION # 114
Which TWO correctly describe the attributes of Oracle Cloud Infrastructure (OCI) compartments?
(Choose all correct answers)
- A. By default, your tenancy comes with a root compartment.
- B. Compartments can be used to logically separate OCI resources.
- C. Compartments cannot have sub compartments.
- D. Compartments can be used to physically separate OCI resources.
- E. Resources within one compartment cannot interact with resources in other compartments.
Answer: A,B
Explanation:
A compartment is a logical container that can hold OCI resources such as compute instances, block volumes, virtual cloud networks, etc. Compartments help you organize and control access to your resources based on business needs or security requirements3 By default, your tenancy comes with a root compartment that is the parent of all other compartments in your tenancy. You cannot delete the root compartment, but you can create subcompartments within it to further organize your resources3 Compartments can be used to logically separate OCI resources, not physically separate them. Resources within one compartment can interact with resources in other compartments, as long as the appropriate policies and network configurations are in place. For example, you can attach a compute instance in one compartment to a virtual cloud network in another compartment, or grant access to a user group in one compartment to manage resources in another compartment34
NEW QUESTION # 115
Which statement accurately describes an Oracle Cloud Infrastructure Region?
- A. Each Fault Domain has multiple Availability Domains.
- B. Each Availability Domain has three Fault Domains.
- C. Each region has a single Fault Domain.
- D. Each Availability Domain has a single Fault Domain.
Answer: B
Explanation:
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.
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.
NEW QUESTION # 116
Which is an example of Edge Services in Oracle Cloud Infrastructure (OCI)?
- A. Web Application Firewall
- B. Virtual Cloud Network (VCN)
- C. Virtual Firewall
- D. Object Storage
Answer: A
Explanation:
Oracle Cloud Infrastructure Web Application Firewall (WAF) is a cloud-based, Payment Card Industry (PCI) compliant, global security service that protects applications from malicious and unwanted internet traffic. WAF can protect any internet facing endpoint, providing consistent rule enforcement across a customer's applications.
WAF provides you with the ability to create and manage rules for internet threats including Cross-Site Scripting (XSS), SQL Injection and other OWASP-defined vulnerabilities. Unwanted bots can be mitigated while tactically allowed desirable bots to enter. Access rules can limit based on geography or the signature of the request.
Reference:
https://blogs.oracle.com/cloud-infrastructure/innovation-in-edge-services-the-oracle-cloud-infrastructure-edge-network
NEW QUESTION # 117
Which capability can be used to protect against unexpected hardware or power supply failures within an availability domain?
- A. Fault Domains
- B. Power Distribution Units
- C. Compartments
- D. Top of Rack Switches
Answer: A
Explanation:
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.
NEW QUESTION # 118
Which TWO types of encryption keys are recognized by the Oracle Cloud Infrastructure (OCI) Vault service?
(Choose all correct answers)
- A. Wrapper keys
- B. Alias keys
- C. Master Encryption keys
- D. Auth Tokens
- E. Data encryption keys
Answer: C,E
Explanation:
Master encryption keys are keys that are stored and managed by the Vault service. They are used to encrypt or decrypt data encryption keys or other secrets stored in the Vault service7 Data encryption keys are keys that are generated by the Vault service and used to encrypt or decrypt data outside of the Vault service, such as data in Object Storage or Block Volume. Data encryption keys are themselves encrypted by master encryption keys and returned to the user as ciphertext
NEW QUESTION # 119
You are analyzing your Oracle Cloud Infrastructure (OCI) usage with Cost Analysis tool in the OCI console.
Which of the following is NOT a default feature of the tool?
- A. Filter costs by date
- B. Filter costs by tags
- C. Filter costs by applications
- D. Filter costs by compartments
Answer: C
Explanation:
Cost Analysis is an easy-to-use visualization tool to help you track and optimize your Oracle Cloud Infrastructure spending, allows you to generate charts, and download accurate, reliable tabular reports of aggregated cost data on your Oracle Cloud Infrastructure consumption. Use the tool for spot checks of spending trends and for generating reports
NEW QUESTION # 120
Which Oracle Cloud Infrastructure service is designed to protect your web applications from various types of malicious attacks, such as SQL injection and cross-site scripting?
- A. Vault
- B. Web Application Firewall (WAF)
- C. Cloud Guard
- D. Security Advisor
Answer: B
Explanation:
Web Application Firewall (WAF) is the Oracle Cloud Infrastructure service that is designed to protect web applications from various types of malicious attacks, such as SQL injection and cross-site scripting. WAF is a cloud-based service that inspects incoming web traffic and blocks any requests that are malicious or do not comply with predefined rules. WAF helps users secure their web applications from common web exploits and application-layer attacks.
NEW QUESTION # 121
Which file protocol does Oracle Cloud Infrastructure File Storage Service use to enable file sharing across instances?
- A. Server Message Block (SMB)
- B. Network File System (NFS)
- C. File Transfer Protocol (FTP)
- D. Internet Small Computer Systems Interface (iSCSI)
Answer: B
Explanation:
Network File System (NFS) is the file protocol that Oracle Cloud Infrastructure File Storage Service uses to enable file sharing across instances. NFS is a distributed file system protocol that allows a user on a client computer to access files over a network in a manner similar to how local storage is accessed. The File Storage service supports the NFS version 3.0 protocol with Network Lock Manager (NLM) for file locking functionality2.
NEW QUESTION # 122
Which statement is true for an oracle cloud Infrastructure (OCI) compute instance?
- A. Compute instance always get a public IP address
- B. Compute instance does not use a boot volume
- C. Compute instance cannot leverage auto scaling feature
- D. Compute instance always get a private IP address
Answer: D
Explanation:
When you create an instance, the instance is automatically attached to a virtual network interface card (VNIC) in the cloud network's subnet and given a private IP address from the subnet's CIDR. You can let the IP address be automatically assigned, or you can specify a particular address of your choice. The private IP address lets instances within the cloud network communicate with each other.
Reference:
https://docs.cloud.oracle.com/en-us/iaas/Content/Compute/Tasks/launchinginstance.htm Instances use IP addresses for communication. Each instance has at least one private IP address and optionally one or more public IP addresses. A private IP address enables the instance to communicate with other instances inside the VCN, or with hosts in your on-premises network (via an IPSec VPN or Oracle Cloud Infrastructure FastConnect). A public IP address enables the instance to communicate with hosts on the internet.
NEW QUESTION # 123
Which service is the most effective for moving large amounts of data from your on-premises to Oracle Cloud Infrastructure (OCI)?
- A. Data Safe
- B. Dynamic Routing Gateway
- C. Data Transfer appliance
- D. Internet Gateway
Answer: C
Explanation:
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.
NEW QUESTION # 124
A banking platform has been re-designed to a microservices based architecture using Docker containers for deployment.
Which service can you use to deploy containers on Oracle Cloud Infrastructure (OCI)?
- A. API Gateway
- B. Container Engine for Kubernetes (OKE)
- C. Streaming Service
- D. File Storage Service
Answer: B
Explanation:
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.
NEW QUESTION # 125
Which database technology underlines Oracle Cloud Infrastructure Autonomous Database?
- A. MySQL
- B. Oracle Database
- C. Microsoft SQL Server
- D. PostgreSQL
Answer: B
Explanation:
Oracle Cloud Infrastructure Autonomous Database is based on Oracle Database, the world's leading relational database management system. It leverages the features and capabilities of Oracle Database to provide a fully managed, self-driving, self-securing, and self-repairing database service6
NEW QUESTION # 126
What type of storage is primary used for storing the boot volume of an in the Oracle Cloud Infrastructure Compute service?
- A. File Storage
- B. Architect Storage
- C. Block Storage
- D. Object Storage
Answer: C
Explanation:
Block storage is the primary type of storage used for storing the boot volume of an instance in the Oracle Cloud Infrastructure Compute service. A boot volume is a detachable block storage device that contains the operating system and other software required to boot an instance.
NEW QUESTION # 127
Which feature of Oracle Cloud Infrastructure object Storage Service enables users to automatically move objects between storage tiers based on predefined rules?
- A. Pre-Authenticated Requests
- B. Object Versioning
- C. Cross-Authentication Replication
- D. Object Lifecycle Management
Answer: D
Explanation:
Object lifecycle management is the feature of Oracle Cloud Infrastructure Object Storage service that enables users to automatically move objects between storage tiers based on predefined rules. Object lifecycle management helps users optimize their storage costs and performance by moving objects to the most appropriate storage tier according to their access patterns and retention requirements.
NEW QUESTION # 128
Which is NOT covered by Oracle Cloud Infrastructure (OCI) Service Level Agreement (SLA)?
- A. Manageability
- B. Availability
- C. Performance
- D. Reliability
Answer: D
Explanation:
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.
NEW QUESTION # 129
A developer wants to develop docker-based applications on Oracle Cloud Infrastructure (OCI) and deploy it on a managed service that supports containerized applications.
Which OCI service supports this requirement?
- A. API Gateway
- B. Streaming
- C. Oracle Container Engine for Kubernetes (OKE)
- D. Oracle Cloud VMware Solution
Answer: C
Explanation:
Oracle Container Engine for Kubernetes (OKE) is an OCI service that supports the development and deployment of docker-based applications on OCI. OKE is a fully-managed, scalable, and highly available service that runs Kubernetes clusters on OCI. OKE allows you to create, manage, and scale Kubernetes clusters using the OCI Console, CLI, or API. You can use OKE to orchestrate the deployment, scaling, and management of your containerized applications across multiple nodes and availability domains. OKE integrates with other OCI services such as Compute, Networking, Load Balancing, Block Volume, Object Storage, Registry, and Monitoring1 Streaming, Oracle Cloud VMware Solution, and API Gateway are not OCI services that support the development and deployment of docker-based applications on OCI.
Streaming is an OCI service that provides a fully managed, scalable, and durable platform for ingesting, storing, and consuming continuous, high-volume streams of data. Streaming is based on Apache Kafka and can be used for real-time data processing, analytics, and event-driven applications2 Oracle Cloud VMware Solution is an OCI service that provides a customer-managed, native VMware-based cloud environment that is installed within a customer's tenancy. Oracle Cloud VMware Solution allows customers to use the same VMware tools and skills to manage and run their infrastructure in the cloud without compromise. Customers can migrate or extend their on-premises VMware workloads to OCI with minimal changes3 API Gateway is an OCI service that enables developers to create, manage, and secure APIs for their back-end services. API Gateway acts as a single point of entry for clients to access defined back-end services hosted on OCI or other locations. API Gateway supports RESTful and HTTP-based APIs, as well as API lifecycle management features such as authentication, authorization, throttling, caching, logging, and monitoring4
NEW QUESTION # 130
What type of storage is primary used for storing the boot volume of an in the Oracle Cloud Infrastructure Compute service?
- A. File Storage
- B. Architect Storage
- C. Block Storage
- D. Object Storage
Answer: C
Explanation:
Block storage is the primary type of storage used for storing the boot volume of an instance in the Oracle Cloud Infrastructure Compute service. A boot volume is a detachable block storage device that contains the operating system and other software required to boot an instance.
NEW QUESTION # 131
You run 5 Oracle Cloud Infrastructure (OCI) Virtual Machine instances on an OCI dedicated virtual host. How will this deployment be billed?
- A. 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
- C. The dedicated virtual machine host all 5 instances, and the boot volume of each instance will be billed
- D. Only the dedicated virtual machine host will be billed
Answer: B
Explanation:
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
NEW QUESTION # 132
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