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1Z0-084

Exam Code: 1Z0-084

Exam Name: Oracle Database 19c Performance and Tuning Management

Version: V22.75

Q & A: 580 Questions and Answers

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NEW QUESTION: 1
あなたの会社は、顧客向けイベント登録サイトを運営しています。このサイトは、Webおよびアプリケーション層サーバーとMySQLデータベースを備えた3層アーキテクチャーで構築されています。最小65%のサーバー容量と単一のMySQLデータベース。
このアプリケーションを3つのアベイラビリティーゾーン(AZ)がある地域にデプロイする場合、どのアーキテクチャーが高可用性を提供しますか?
A. ELB(エラスティックロードバランサ)の背後にあるAuto Scalingグループ内の各AZに3つのEC2(Elastic Compute Cloud)インスタンスを持つ2つのAZにまたがってデプロイされたWeb層、および各AZに3つのEC2インスタンスを持つ2つのAZにまたがってデプロイされるアプリケーション層ELBの背後にあるAuto Scaling Group内、および他のAZにリードレプリカを配置した1つのRDS(Relational Database Service)インスタンス。
B. ELB(エラスティックロードバランサー)の背後にあるAuto Scaling Group内の各AZに2つのEC2(Elastic Compute Cloud)インスタンスを持つ3つのAZにまたがってデプロイされたWeb層ELBの背後にあるAuto Scaling Groupと、他の2つのAZにリードレプリカを配置した1つのRDS(Relational Database Service)インスタンス。
C. ELB(エラスティックロードバランサ)の背後にあるAuto Scalingグループ内の各AZに2つのEC2(Elastic Compute Cloud)インスタンスを持つ3つのAZにまたがってデプロイされたWeb層。また、1つのアプリケーション層が3つのAZにまたがって配置され、ELBおよびマルチAZ RDS(リレーショナルデータベースサービス)配置の背後にあるAuto Scalingグループ内の各AZに2つのEC2インスタンスが配置されました。
D. ELB(エラスティックロードバランサ)の背後にあるAuto Scalingグループ内の各AZに3つのEC2(Elastic Compute Cloud)インスタンスを持つ2つのAZにまたがってデプロイされたWeb層ELSおよびMulti-AZ RDS(リレーショナルデータベースサービス)展開の背後にあるAuto Scalingグループ。
Answer: C
Explanation:
Explanation
Amazon RDS Multi-AZ Deployments
Amazon RDS Multi-AZ deployments provide enhanced availability and durability for Database (DB) Instances, making them a natural fit for production database workloads. When you provision a Multi-AZ DB Instance, Amazon RDS automatically creates a primary DB Instance and synchronously replicates the data to a standby instance in a different Availability Zone (AZ). Each AZ runs on its own physically distinct, independent infrastructure, and is engineered to be highly reliable. In case of an infrastructure failure (for example, instance hardware failure, storage failure, or network disruption), Amazon RDS performs an automatic failover to the standby, so that you can resume database operations as soon as the failover is complete. Since the endpoint for your DB Instance remains the same after a failover, your application can resume database operation without the need for manual administrative intervention.
Enhanced Durability
Multi-AZ deployments for the MySQL, Oracle, and PostgreSQL engines utilize synchronous physical replication to keep data on the standby up-to-date with the primary. Multi-AZ deployments for the SQL Server engine use synchronous logical replication to achieve the same result, employing SQL Server-native Mirroring technology. Both approaches safeguard your data in the event of a DB Instance failure or loss of an Availability Zone.
If a storage volume on your primary fails in a Multi-AZ deployment, Amazon RDS automatically initiates a failover to the up-to-date standby. Compare this to a Single-AZ deployment: in case of a Single-AZ database failure, a user-initiated point-in-time-restore operation will be required. This operation can take several hours to complete, and any data updates that occurred after the latest restorable time (typically within the last five minutes) will not be available.
Amazon Aurora employs a highly durable, SSD-backed virtualized storage layer purpose-built for database workloads. Amazon Aurora automatically replicates your volume six ways, across three Availability Zones.
Amazon Aurora storage is fault-tolerant, transparently handling the loss of up to two copies of data without affecting database write availability and up to three copies without affecting read availability. Amazon Aurora storage is also self-healing. Data blocks and disks are continuously scanned for errors and replaced automatically.
Increased Availability
You also benefit from enhanced database availability when running Multi-AZ deployments. If an Availability Zone failure or DB Instance failure occurs, your availability impact is limited to the time automatic failover takes to complete: typically under one minute for Amazon Aurora and one to two minutes for other database engines (see the RDS FAQ for details).
The availability benefits of Multi-AZ deployments also extend to planned maintenance and backups. In the case of system upgrades like OS patching or DB Instance scaling, these operations are applied first on the standby, prior to the automatic failover. As a result, your availability impact is, again, only the time required for automatic failover to complete.
Unlike Single-AZ deployments, I/O activity is not suspended on your primary during backup for Multi-AZ deployments for the MySQL, Oracle, and PostgreSQL engines, because the backup is taken from the standby.
However, note that you may still experience elevated latencies for a few minutes during backups for Multi-AZ deployments.
On instance failure in Amazon Aurora deployments, Amazon RDS uses RDS Multi-AZ technology to automate failover to one of up to 15 Amazon Aurora Replicas you have created in any of three Availability Zones. If no Amazon Aurora Replicas have been provisioned, in the case of a failure, Amazon RDS will attempt to create a new Amazon Aurora DB instance for you automatically.

NEW QUESTION: 2
Configuring the Cascade appliance to use RADIUS for authentication/authorization involves which of the following tasks (in no particular order): (Select 4)
A. Authentication protocol
B. Specify the IP address of the RADIUS server
C. Password
D. Port number
E. Shared secret of each RADIUS server
F. User Name
Answer: A,B,D,E

NEW QUESTION: 3
You need to create and configure an Azure Storage account named az400lod11566895stor in a resource group named RG1lod11566895 to store the boot diagnostics for a virtual machine named VM1.
To complete this task, sign in to the Microsoft Azure portal.
A. Step 1: To create a general-purpose v2 storage account in the Azure portal, follow these steps:
* On the Azure portal menu, select All services. In the list of resources, type Storage Accounts. As you begin typing, the list filters based on your input. Select Storage Accounts.
* On the Storage Accounts window that appears, choose Add.
* Select the subscription in which to create the storage account.
* Under the Resource group field, select RG1lod11588895
* Next, enter a name for your storage account named: az400lod11566895stor
* Select Create.
Step 2: Enable boot diagnostics on existing virtual machine
To enable Boot diagnostics on an existing virtual machine, follow these steps:
1. Sign in to the Azure portal, and then select the virtual machine VM1.
2. In the Support + troubleshooting section, select Boot diagnostics, then select the Settings tab.
3. In Boot diagnostics settings, change the status to On, and from the Storage account drop-down list, select the storage account az400lod11588895stor.
4. Save the change.
Clear 1Z0-084 Exam
You must restart the virtual machine for the change to take effect.
B. Step 1: To create a general-purpose v2 storage account in the Azure portal, follow these steps:
* On the Azure portal menu, select All services. In the list of resources, type Storage Accounts. As you begin typing, the list filters based on your input. Select Storage Accounts.
* On the Storage Accounts window that appears, choose Add.
* Select the subscription in which to create the storage account.
* Under the Resource group field, select RG1lod11566895
* Next, enter a name for your storage account named: az400lod11566895stor
* Select Create.
Step 2: Enable boot diagnostics on existing virtual machine
To enable Boot diagnostics on an existing virtual machine, follow these steps:
1. Sign in to the Azure portal, and then select the virtual machine VM1.
2. In the Support + troubleshooting section, select Boot diagnostics, then select the Settings tab.
3. In Boot diagnostics settings, change the status to On, and from the Storage account drop-down list, select the storage account az400lod11566895stor.
4. Save the change.
Clear 1Z0-084 Exam
You must restart the virtual machine for the change to take effect.
Answer: B
Explanation:
Reference:
https://docs.microsoft.com/en-us/azure/storage/common/storage-account-create
https://docs.microsoft.com/en-us/azure/virtual-machines/troubleshooting/boot-diagnostics

NEW QUESTION: 4
A company needs to create a series of mobile applications to empower their field engineers to accomplish several tasks with varying degrees of complexity.
Match each option to its answer.
Instructions: To answer, drag the appropriate app type from the column on the left to its definition on the right. Each app type may be used once, more than once, or not at all.
NOTE: Each correct match is worth one point.
Clear 1Z0-084 Exam
Clear 1Z0-084 Exam
Answer:
Explanation:
Clear 1Z0-084 Exam
Explanation:
Box 1: canvas
Both model-driven and canvas apps allow you to easily build business apps. They both share access to the Common Data Service providing standard and custom entities. Canvas apps start with your user experience, crafting a highly tailored interface with the power of a blank canvas and connecting it to 200 data sources. Canvas apps can be built for web, mobile, and tablet applications. Model-driven apps start with your data model - building up from the shape of your core business data and processes in the Common Data Service to model forms, views, and other components. Model-driven apps automatically generate great UI that is responsive across devices.
Box 2: model-driven
Reference:
https://powerapps.microsoft.com/sv-se/blog/introducing-model-driven-apps/

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