Oracle 1Z0-997-21 Online Practice Questions and Exam Preparation

Oracle 1Z0-997-21 Online Questions & Answers

• Question 71:

  You are responsible for migrating your on premises legacy databases on 11.2.0.4 version to Autonomous Transaction Processing Dedicated (ATP-D) In Oracle Cloud Infrastructure (OCI). As a solution architect, you need to plan your migration approach. Which two options do you need to implement together to migrate your on premises databases to OCI?

  A. Use Oracle Data Guard to keep on premises database always active during migration
  B. Retain changes to Oracle shipped privileges, stored procedures or views In the on-premises databases.
  C. Use Oracle GoldenGate replication to keep on premises database online during migration.
  D. Convert on-premises databases to PDB, upgrade to 19c, and encrypt Migration.
  E. Retain all legacy structures and unsupported features (e.g. taw U>Bs) In the onuses databases for migration.
  C. Use Oracle GoldenGate replication to keep on premises database online during migration.
  D. Convert on-premises databases to PDB, upgrade to 19c, and encrypt Migration.

  ---

  Autonomous Database is an Oracle Managed and Secure environment. A physical database can't simply be migrated to autonomous because:

  -

  Database must be converted to PDB, upgraded to 19c, and encrypted

  -

  Any changes to Oracle shipped privileges, stored procedures or views must be removed

  -

  All legacy structures and unsupported features must be removed (e.g. legacy LOBs) GoldenGate replication can be used to keep database online during migration

• Question 72:

  You work for a German company as the Lead Oracle Cloud Infrastructure architect. You have designed a highly scalable architecture for your company's business critical application which uses the Load Balancer service auto which uses the

  Load Balancer service, autoscaling configuration for the application servers and a 2 Node VM Oracle RAC database. During the peak utilization period of the- application yon notice that the application is running slow and customers are

  complaining. This is resulting in support tickets being created for API timeouts and negative sentiment from the customer base.

  What are two possible reasons for this application slowness?

  A. Autoscaling configuration for the application servers didn't happen due to IAM policy that's blocking access to the application server compartment
  B. The Load Balancer configuration is not sending traffic to the listener of the application servers.
  C. Autoscaling configuration for the application servers didn't happen due to compartment quota breach of the VM shapes used by the application servers.
  D. Autoscaling configuration for the application servers didn't happen due to service limit breach of the VM shapes used by the application servers
  E. The Load Balancer doesn't have a Network Security Group to allow traffic to the application servers.
  C. Autoscaling configuration for the application servers didn't happen due to compartment quota breach of the VM shapes used by the application servers.
  D. Autoscaling configuration for the application servers didn't happen due to service limit breach of the VM shapes used by the application servers

  ---

  Autoscaling Autoscaling enables you to automatically adjust the number of Compute instances in an instance pool based on performance metrics such as CPU utilization. This helps you provide consistent performance for your end users during periods of high demand, and helps you reduce your costs during periods of low demand. Prerequisites

  -

  You have an instance pool. Optionally, you can attach a load balancer to the instance pool. For steps to create an instance pool and attach a load balancer, see Creating an Instance Pool.

  -

  Monitoring is enabled on the instances in the instance pool. For steps to enable monitoring, see Enabling Monitoring for Compute Instances.

  -

  The instance pool supports the maximum number of instances that you want to scale to. This limit is determined by your tenancy's service limits.

  About Service Limits and Usage

  When you sign up for Oracle Cloud Infrastructure, a set of service limits are configured for your tenancy.

  The service limit is the quota or allowance set on a resource. For example, your tenancy is allowed a maximum number of compute instances per availability domain. These limits are generally established with your Oracle sales representative

  when you purchase Oracle Cloud Infrastructure.

  Compartment Quotas

  Compartment quotas are similar to service limits; the biggest difference is that service limits are set by Oracle, and compartment quotas are set by administrators, using policies that allow them to allocate resources with a high level of

  flexibility.

• Question 73:

  A retail company has several on-premises data centers which span multiple geographical locations. They plan to move some of their applications from on-premises data centers to Oracle Cloud Infrastructure (OCI). For these applications

  running in OCI, they still need to interact with applications running on their on-premises data centers to Oracle Cloud Infrastructure (OCI). for these applications running in OCI. they still need to interact with applications running on their on-

  premises data centers. These applications require highly available, fault-tolerant network connections between on premises data centers and OCI.

  Which option should you recommend to provide the highest level of redundancy?

  A. Oracle cloud Infrastructure provides network redundancy by default so that no other operations are required
  B. If your data centers span multiple, geographical locations, use only the specific IP address as a static route for the specific geographical location
  C. Set up both IPSec VPN and FastConnect to connect your on premises data centers to Oracle Cloud Infrastructure.
  D. Use FastConnect private peering only to ensure secure access from your data center to Oracle Cloud Infrastructure
  E. Set up a single IPSec VPN connection (rom your data center to Oracle Cloud Infrastructure since It is cost effective
  B. If your data centers span multiple, geographical locations, use only the specific IP address as a static route for the specific geographical location

  ---

  If your data centers span multiple geographical locations, we recommend using a broad CIDR (0.0.0.0/0) as a static route in addition to the CIDR of the specific geographical location. This broad CIDR provides high availability and flexibility to your network design. For instance, the following diagram shows two networks in separate geographical areas that each connect to Oracle Cloud Infrastructure. Each area has a single on-premises router, so two IPSec VPN connections can be created. Note that each IPSec VPN connection has two static routes: one for the CIDR of the particular geographical area, and a broad 0.0.0.0/0 static route.

  

• Question 74:

  A fast growing E-commerce company has deployed their online shopping application on Oracle Cloud Infrastructure. The application was deployed on compute instances with Autoscaling configuration for application servers fronted by a load balancer and OCI Autonomous Transaction Processing (ATP) in the backend. In order to promote their e-commerce platform 50% discount was announced on all the products for a limited period. During the day 1 of promotional period it was observed that the application is running slow and company's hotline is flooded with complaints. What could be two possible reasons for this situation?

  A. The health check on some of the backend servers has failed and the load balancer has taken those servers temporarily out of rotation.
  B. As part of Autoscaling, the load balancer shape has dynamically changed to a larger shape to handle more incoming traffic and the system was slow for a short time during this change.
  C. The health check on some of the backend servers has failed and the load balancer was rebooting these servers.
  D. Autoscaling has already scaled to the maximum number of instances specified in the configuration and there is no room for scaling further.
  A. The health check on some of the backend servers has failed and the load balancer has taken those servers temporarily out of rotation.
  D. Autoscaling has already scaled to the maximum number of instances specified in the configuration and there is no room for scaling further.

• Question 75:

  You work for a bank as the lead Oracle Cloud Infrastructure architect. You designed a highly scalable solution for your company's banking application. The architecture includes a load balancer, application servers with autoscaling

  configuration based on CPU utilization, and an Autonomous Database with Transaction

  Processing workload type running in a Virtual Cloud Network (VCN). During the peak utilization period, the application users complain that the application runs slow. What are two possible reasons for the application running slow at times?

  (Choose two.)

  A. The VCN does not have a Network Security Group configured to allow traffic from the load balancer to all the application servers in the backend set.
  B. Instance pool in autoscaling configuration for the application servers did not scale out due to compartment quota breach of the VM shapes used by the application servers.
  C. The load balancer is not configured correctly to send traffic to all the listeners of the application servers in the backend set.
  D. Instance pool in autoscaling configuration for the Autonomous Database did not scale out due to misconfigured scaling policy.
  E. Instance pool in autoscaling configuration for the application servers did not scale out due to service limit breach of the VM shapes used by the application servers.
  B. Instance pool in autoscaling configuration for the application servers did not scale out due to compartment quota breach of the VM shapes used by the application servers.
  E. Instance pool in autoscaling configuration for the application servers did not scale out due to service limit breach of the VM shapes used by the application servers.

• Question 76:

  You are running a legacy application in a compute instance on Oracle Cloud Infrastructure (OCI). To provide enough space for it to store internal data, a block volume is attached to the instance in paravirtualized mode. Your application is not resilient to crash-consistent backup. What should you do to backup the block volume in a secure and cost effective way? (Choose the best answer.)

  A. Save your application data, detach the block volume and create a clone.
  B. Create a volume group, add the boot volume and then run the volume group backup.
  C. Create a backup, detach the block volume and save your application data.
  D. Save your application data, detach the block volume and create a backup.
  D. Save your application data, detach the block volume and create a backup.

• Question 77:

  As part of planning the network design on Oracle Cloud Infrastructure, you have been asked to create an Oracle Cloud Infrastructure Virtual Cloud Network (VCN) with 3 subnets, one in each Availability Domain. Each subnet needs to have a minimum of 64 usable IP addresses. What is the smallest subnet and VCN size you should use to implement this design? The requirements are static, so no growth is expected.

  A. 122 for the VCN; 124 for the subnets
  B. /23 for the VCN; /25 for the subnets
  C. /24 for the VCN; /24 for the subnets
  D. /22 for the VCN; /25 for the subnets
  B. /23 for the VCN; /25 for the subnets

• Question 78:

  A manufacturing company is planning to migrate their on-premises database to Oracle Cloud Infrastructure and has hired you for the migration. Customer has provided following information regarding their existing on-premises database:

  Database version, database character set, storage for data staging, acceptable length of system outage.

  What additional information do you need from customer in order to recommend a suitable migration method? (Choose Two)

  A. On-Premises host operating system and version.
  B. Number of active connections.
  C. Data types used in the on-premises database.
  D. Elapsed time since database was last patched.
  E. Top 5 longest running queries.
  A. On-Premises host operating system and version.
  C. Data types used in the on-premises database.

• Question 79:

  Which of the below options is true regarding Oracle Cloud Infrastructure's load balancing service?

  A. You can dynamically change the load balancer shape to handle more incoming traffic.
  B. The public load balancer applies a floating public IP address to the primary load balancer.
  C. When you create a private load balancer, the service requires 2 or more subnets to host both the primary and standby load balancers.
  D. A public load balancer is Availability Domain specific in scope.
  B. The public load balancer applies a floating public IP address to the primary load balancer.

• Question 80:

  You are tasked with building a highly available, fault tolerant web application for your current employer. The security team is concerned about an increase in malicious web-based attacks across the internet and asked what you can do to add a higher level of security to the website. How should you architect the solution on Oracle Cloud Infrastructure (OCI) to meet all requirements defined by your organization? (Choose the best answer.)

  A. Deploy at least 3 web application servers, each in a different fault domain, using a regional private subnet. Place a public load balancer in a regional public subnet and create a backend set for all of the web application servers. Deploy a Web Application Firewall (WAF) and configure the load balancer public IP address as the origin.
  B. Deploy at least 3 web application servers, each in a different fault domain, using a regional private subnet. Place a public load balancer in a regional public subnet and create a backend set for all of the web application servers. Create a Geolocation steering policy in Traffic Management and add an answer pool that directs to the public IP address of the load balancer. Configure a global catch-all rule to use this answer pool.
  C. Deploy at least 3 web application servers, each in a different fault domain, using a regional public subnet. Ensure that each web application server is assigned a public IP address. Deploy a Web Application Firewall (WAF) and configure one Origin for each public IP address.
  D. Deploy at least 3 web application servers, each in a different fault domain, using a regional public subnet. Use the OCI Traffic Management service to create a load balancing policy that will resolve DNS evenly between all web servers.
  A. Deploy at least 3 web application servers, each in a different fault domain, using a regional private subnet. Place a public load balancer in a regional public subnet and create a backend set for all of the web application servers. Deploy a Web Application Firewall (WAF) and configure the load balancer public IP address as the origin.