Q2 Question 34 Explanation

Not all migration methods apply to all migration scenarios. Many of the migration methods apply only if specific characteristics of the source and destination databases match or are compatible. Moreover, additional factors can affect which method you choose for your migration from among the methods that are technically applicable to your migration scenario.

Some of the characteristics and factors to consider when choosing a migration method are:

On-premises database version

Database service database version

On-premises host operating system and version

On-premises database character set

Quantity of data, including indexes

Data types used in the on-premises database

Storage for data staging

Acceptable length of system outage

Network bandwidth

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Q2 Question 33 Explanation

Oracle Cloud Infrastructure Streaming

OCI Streaming service provides a fully managed, scalable, durable storage option for continuous, high-volume streams of data that you can consume and process in real-time

Use cases

Streaming can be used for messaging, ingesting high volume data such as application log data, operational telemetry data, web click-stream data or other use cases in which data is produced and processed continually and sequentially in a publish-subscribe messaging model.

Messaging: Use streaming as a backplane to decouple components of large systems. Key-scoped ordering, low latency and guaranteed durability of streaming provide reliable primitives to implement a variety of messaging patterns, while high throughput potential allows for such a system to scale well.

Web/Mobile activity data ingestion: Use streaming as your ingestion pipeline for usage data from web sites or mobile apps (such as page views, searches, or other actions users may take). Streaming’s consumer model makes it easy to feed information to multiple real-time monitoring and analytics systems or to a data warehouse for offline processing and reporting.

Metric and log ingestion: Use streaming as an alternative for traditional log and metrics aggregation approaches to help make critical operational data more quickly available for indexing, analysis, and visualization.

Infrastructure and application event processing: Use streaming as a unified entry point for cloud components to report their life cycle events for audit, accounting, and related activities.

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Q2 Question 32 Explanation

You can change the shape of a virtual machine (VM) instance without having to rebuild your instances or redeploy your applications. This lets you scale up your Compute resources for increased performance, or scale down to reduce cost.

When you change the shape of an instance, you select a different processor, number of cores, amount of memory, network bandwidth, and maximum number of VNICs for the instance. The instance's public and private IP addresses, volume attachments, and VNIC attachments remain the same.

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Q2 Question 31 Explanation

Object Lifecycle Management works by defining rules that instruct Object Storage to archive or delete objects on your behalf within a given bucket. A bucket's lifecycle rules are collectively known as an object lifecycle policy.

You can use a rule to either archive or delete objects and specify the number of days until the specified action is taken.

A rule that deletes an object always takes priority over a rule that would archive that same object.

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Q2 Question 30 Explanation

in Transit routing through a private IP in the VCN you set up an instance in the VCN to act as a firewall or intrusion detection system to filter or inspect the traffic between the on-premises network and Oracle Services Network.

The Networking service lets you implement network security functions such as intrusion detection, application-level firewalls

In fact, the IDS model can be host-based IDS (HIDS) or network-based IDS (NIDS). HIDS is installed at a host to periodically monitor specific system logs for patterns of intrusions. In contrast, an NIDS sniffs the traffic to analyze suspicious behaviors. A signature-based NIDS (SNIDS) examines the traffic for patterns of known intrusions. SNIDS can quickly and reliably diagnose the attacking techniques and security holes without generating an over-whelming number of false alarms because SNIDS relies on known signatures. However, anomaly-based NIDS (ANIDS) detects unusual behaviors based on statistical methods. ANIDS could detect symptoms of attacks without specific knowledge of details. However, if the training data of the normal traffic are inadequate, ANIDS may generate a large number of false alarms.

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Q2 Question 29 Explanation

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.

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.

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Q2 Question 28 Explanation

Federating with Microsoft Azure Active Directory

To federate with Azure AD, you set up Oracle Cloud Infrastructure as a basic SAML single sign-on application in Azure AD. To set up this application, you perform some steps in the Oracle Cloud Infrastructure Console and some steps in Azure AD.

Following is the general process an administrator goes through to set up the federation. Details for each step are given in the next section.

In Oracle Cloud Infrastructure, download the federation metadata document.

In Azure AD, set up Oracle Cloud Infrastructure Console as an enterprise application.

In Azure AD, configure the Oracle Cloud Infrastructure enterprise application for single sign-on.

In Azure AD, set up the user attributes and claims.

In Azure AD, download the Azure AD SAML metadata document.

In Azure AD, assign user groups to the application.

In Oracle Cloud Infrastructure, set up Azure AD as an identity provider.

In Oracle Cloud Infrastructure, map your Azure AD groups to Oracle Cloud Infrastructure groups.

In Oracle Cloud Infrastructure, set up the IAM policies to govern access for your Azure AD groups.

Share the Oracle Cloud Infrastructure sign-in URL with your user

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