Review By: Mukesh Sharma
Time taken to Prepare
Detailed Review Of Preparation
How to prepare for OCI 2019 Architect Associate exam
I recently prepared for an passed the Oracle Cloud Infrastructure 1Z0-1072-OCI-Architect-Associate-2019 exam. The format and the content for the exam is available on Oracle’s education site –
I would absolutely recommend a refresh of the OCI fundamentals before jumping into the OCI architect course.
I went through the course once at 2x speed and captured most of the information in a word document. The exam is supposedly not as difficult as any other AWS or GCP associate level exams. I am listing the main topics of the preparation course and some of the key elements you should understand and remember before you take the #FREE exam offered by Oracle.
All resources shared during the course are available at this training site location - OCI Architect Associate Resources
Getting Started with OCI
To better understand the OCI interface as well as all the services please review the Infrastructure as a service documentation available here at OCI IAAS Documentation site and services availability across regions across the world.
Lets now focus on individual services and some of the focus areas to remember
· IAM – There are mainly 4 verbs used in IAM to define a policy and they are inspect, read, use and manage.
o Inspect – provided the ability to list resources
o Read – Includes inspect and ability to get user specified metadata/actual resource
o Use – Includes read + ability to work with existing resources (the actions vary by resource type). This verb does not allow the ability to create or delete any type of resource.
o Manage – Includes all permissions for the resource
o The most common format of an IAM policy is listed below –
The subject can be an IAM user, group, resource group etcetera
Please pay special attention to managing users, groups, Dynamic groups and network resources. You must specially understand that if you want to provide a specific role to a compute instance, you need to attach a dynamic group to it so that it is identified as “principal” and it can make API calls against other services on OCI.
· IAM-Compartment – Compartments are another way to manage your resources by relating them together and accessed by groups that are given permission.
o It must be understood that each resource can belong to one and only one compartment. However, resources can be shared across compartments.
o Resources can also be moved across compartments once they have been created.
o Compartments can have sub compartments that can go six level deep.
§ COMP1 > COMP2 > COMP3 > COMP4 > COMP5 > COMP6
§ These sub compartments inherit access permissions from compartments higher up the hierarchy
o When an IAM policy is being created, it must be specified which compartment to attach it to.
· IAM Policy Inheritance and Attachment
o Understand how IAM policy inheritance work when resources are moved across compartments.
o Tagging is an additional method to identify/categorize your services inside your compartments.
o Free form and custom tags are allowed under OCI.
It should be emphasized that you must have understanding of creating public and private networks and how all private networks use CIDR ranges identified under RFC 1918. The major networking components of OCI networking is listed below -
§ Default route table
§ Default Security list
§ Default DHCP options
o PRIVATE IP
o PUBLIC IP
o DYNAMIC ROUTING GATEWAY (DRG) – Connect on-premises networking and use it to peer VCNs across regions with remote peering gateway. Please understand that DRG connections are always private when used either with Fastconnect for in premises or with RPC across regions to pair VCNs.
o INTERNET GATEWAY
o NETWORK ADDRESS TRANSLATION (NAT) GATEWAY
o SERVICE GATEWAY – These provide a way to connect resources in your VCN to other manager services like OCI object storage.
o LOCAL PEERING GATEWAY (LPG)
o REMOTE PEERING CONNECTION (RPC) – Understand the user dynamic routing gateway (DRG) with on premises versus using DRG with RPC in a multi-region configuration.
§ Difference between security lists and network security groups.
o VPN Connect – Please do take a moment to understand how to establish cost effective and redundant connectivity with OCI using VPN connect and DRG. I found this example very interesting to read and understand.
Overview of connectivity options on OCI
o Concepts of load balancing on OCI
§ Service discovery
§ Health Check
o Benefits of load balancing on OCI
§ Fault tolerance and high availability
§ Naming Abstraction
o Concepts of a public load balancer
§ Backend server
§ Load balancing policy
§ Round Robin
§ IP Hash (sticky connections)
§ Least Connection
§ Back end sets
§ Health Checks – this is a test to confirm the availability of backend servers. Health check is activated for backends, backend sets and overall load balancer.
o Concept of private load balancer
o Bare Metal
o Virtual Machines
o Dedicated VM Hosts
o Creating Custom Images of Boot Volumes
§ Emulation Mode
§ Para virtualized Mode
§ Native Mode
o Cloning a boot volume – Please ensure that you check out the difference between boot volume backups and clones and how they are mutually exclusive to each other.
o Instance Configuration and pools – configure and manage a set of instances/images together.
o Instance Metadata
o Instance Life Cycle – start/stop/reboot/terminate
5. Storage on OCI
o File Storage – Please read through the concepts of creating/managing files systems, managing mount targets, snapshots , using export options (to provide granular access to a file system mounted on same mount target and accessed by two different clients/instances) etc. I found this complete section extremely useful.
Where does tnsames.ora reside -It resides in oracle home\NETWORK]\ADMIN directory
Some additional resources that I think are extremely useful to review that were not covered in the course are listed below –
I want to add a few tips from my experience during the exam –
§ I noticed most of the answers are in the question, so if you are not completely confident, select what you think is right, mark the question to come back for review and then revisit it as soon as you are reviewing your exam.
§ You will notice as you traverse through rest of the tests, some of the questions that follow latter may also have answer to what you could not answer earlier.
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