The 1Z0-1089-21 exam is an Oracle certification exam. Specifically, it’s the “Oracle Cloud Infrastructure (OCI) Developer 2021 Associate” exam. This certification validates your ability to develop applications on Oracle Cloud Infrastructure. Here’s some general information about the exam:

Exam Name: Oracle Cloud Infrastructure (OCI) Developer 2021 Associate
Exam Code: 1Z0-1089-21
Certification: Oracle Cloud Infrastructure Developer 2021 Certified Associate
Duration: The exam duration is typically around 105 minutes.
Number of Questions: There are around 55 to 60 questions in the exam.
Passing Score: Oracle doesn’t officially disclose the passing score, but it’s typically around 70%.

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Exam Topics: The exam covers various topics related to Oracle Cloud Infrastructure, including:
OCI Core Services
Security
Networking
Compute
Storage
Database
Application Development
Monitoring and Observability

Preparation: Oracle provides official training courses and documentation to help you prepare for the exam. Hands-on experience with Oracle Cloud Infrastructure is also highly recommended.

Exam Registration: You can register for the exam through the Oracle Certification website.

Validity: Once you pass the exam and earn the certification, it is valid indefinitely. However, Oracle may retire certifications as new versions of their services are released, so it’s a good idea to stay updated with any changes.

The 1Z0-1089-21 exam, or the Oracle Cloud Infrastructure (OCI) Developer 2021 Associate exam, covers a range of topics related to developing applications on Oracle Cloud Infrastructure. Here are the main exam topics you should focus on:

OCI Core Services:
Understand the core OCI services such as compute, storage, networking, and identity and access management (IAM).
Know how to interact with these services programmatically using the OCI SDKs (Software Development Kits) and CLI (Command Line Interface).

Security:
Understand the various security features and best practices in OCI, including IAM policies, compartment security, network security, and encryption.
Know how to implement secure authentication and authorization mechanisms for OCI resources.

Networking:
Understand the networking components in OCI, including virtual cloud networks (VCNs), subnets, security lists, route tables, and internet gateways.
Know how to configure and manage networking resources to enable communication between different OCI resources and between OCI and external networks.

Compute:
Understand the different compute options available in OCI, such as virtual machines (VMs), bare metal instances, and container engines.
Know how to provision, configure, and manage compute instances in OCI.

Storage:
Understand the different types of storage services in OCI, including block storage, object storage, and file storage.
Know how to provision, manage, and use storage resources in OCI.

Database:
Understand the database services available in OCI, including Oracle Autonomous Database and Oracle Database Cloud Service.
Know how to provision, configure, and manage databases in OCI.

Application Development:
Understand the different development tools and services available in OCI, such as Oracle Functions (serverless computing), API Gateway, and Developer Services (such as Oracle Cloud Developer Studio).
Know how to develop, deploy, and manage applications on OCI using these tools and services.

Monitoring and Observability:
Understand the monitoring and observability features in OCI, such as logging, monitoring, and alerting.
Know how to monitor and troubleshoot OCI resources using these features.

These are the main topics covered in the exam. It’s essential to study each topic thoroughly and gain hands-on experience with Oracle Cloud Infrastructure to prepare effectively. Oracle provides official training courses and documentation to help you prepare for the exam. Good luck with your preparation! Let me know if you need further clarification on any topic.

Sample Question and Answers

QUESTION 1
What does the Terasort phase of the Terasort benchmark do?

A. It maps and reduces source data in a parallel manner, leveraging data locality to minimize network transfer.
B. It randomly maps source data and reduces output to a smaller data set,
C. It maps and reduces one terabyte of data into a smaller data set.
D. It randomly maps source data and increases output to a bigger data set.

Answer: B

QUESTION 2
You are comparing different processors for Monte-Carlo simula-tion with millions of single core executions. What frequency will have the highest impact on the “time to solution” ?

A. All Core Turbo Frequency
B. Base Frequency
C. Only the network throughput will influence Monte Carlo simula-tions.
D. Turbo Frequency

Answer: D

QUESTION 3
You are running a cluster using multiple BM.Standard2.52 machines. The model is on a NFS share running on block volume- You’ve tried doubling the number of machines but It’s not running any faster.
Which two actions could potentially speed up this tightly coupled workload?

A. Switch to FSS for your file system.
B. Use Cluster Networking.
C. Use BM.HPC2.36.
D. Switch to ESS mode.

Answer: D

QUESTION 4
Which Is a common business problem for customers running Big Data workloads?

A. Costs associated to process a large scale data set
B. Cost associated with Disaster Recovery for large deployments
C. Ability to process a small data set at the minimum cost as possible
D. Ability to process a large data set at the maximum cost as possible

Answer: A

QUESTION 5
What minimum size of block volume with Balanced performance tier maximizes throughput for large files?

A. 10TB
B. 1TB
C. 32TB
D. 100GB

Answer: C

QUESTION 6
A Linux visualization instance Is in a public subnet with security list 0.0-0.0/0 for TCP port 22. What other rule do you absolutely need to be able to connect remotely?

A. Open all protocols for your specific IP address.
B. Create a Stateless Egress rule for port 22-
C. Open TCP ports 5900 to 5910 for 0.0.0.0/0.
D. No other additional rules are needed. It is possible to connect as is.

Answer: C