Question 1: good explanation

Question 75: Correct answer is D
It's not anymore at the bottom of every console page.
It's in Identity -> Compartment -> Root compartment / is the tenancy

Question 46: As per Oracle Cloud Infrastructure Architect Professional Workshop in learn.oracle, this solution should be the DNS Traffic Management Steering Policies - Geolocation Policy... so none of the above is accurate :(

Question 39: Answer is D:
As mentioned in the Service Gateway FAQ:
If you're using a service gateway, you can define an IAM policy that allows access to a bucket only if the requests come from a specific VCN or CIDR range. The IAM policy works only for traffic routed through the service gateway. Access is blocked if the IAM policy is in place and the traffic instead goes through an internet gateway.

Question 27: it should be C, because by default OCI DB service creates first DB

Question 48: A is correct

Question 48: A is correct.

Question 16: Answer A : Is not correct due VCN peering in same home region, we use Local VCN Peering (Within Region).
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Network/Tasks/localVCNpeering.htm
correct answer is D.

Question 93: Answer should be A.
Reference: https://docs.cloud.oracle.com/en-us/iaas/Content/Identity/Tasks/callingservicesfrominstances.htm

Question 47: ans: A,B

Question 38: A and E

Question 21: A , C and D

Using the dbaascli utility, you can:

Change the password of a database user.

Start and stop a database.

Start and stop the Oracle Net listener

Check the status of the Oracle Data Guard configuration.

Perform switchover and failover in an Oracle Data Guard configuration.

Patch the database deployment.

Perform database recovery.

Rotate the master encryption key.

Question 71: D is correct

Question 59: B is correct

Question 55: B is correct

Question 38: A and D

Question 25: B and C

Question 21: A , D and E

Question 8: A and B

Question 15: B
https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/connect-download-wallet.html#GUID-B06202D2-0597-41AA-9481-3B174F75D4B1

Question 8: A and B

Question 71: Answer shall be D as in all other we have overlapping IP Range.

Question 16: As per Oracle they do not have any 2 regions which are located within a range of 300 miles from each other and each region is in different country.
Mostly we shall go with A as it speaks about different AD in same domain.

Question 1: Answer should be C

Question 93: https://medium.com/@tigerbabu/oracle-cloud-infrastructure-associate-architect-notes-
4495b25b24a4

Above link also not showing anything which can proof option D is correct.

Question 92: Option C and D are correct option, for detail please login to OCI console and click on create instance button , while selecting image, there are 6 options are available (Platform Image, Partners Image , Image OCID, Boot volume, Custom image)

Question 89: As requirement is to access public cloud (object storage), so Public peering should be the correct option, and with Fastconnect BGP routs suits this requirement, private peering again add more complexity as it will require DRG which should associate with VCN , then with service gateway the same can achieve which should not be a good architecture so option D should be the correct option.

Question 87: Option B should be the correct one, Option C should not be correct as database should not be accessible through internet.

Question 83: Option D should be the correct option, as by default no access is granted in OCI, and here to use Instance principle , matching rule and dynamic group needs to be defined.

Question 81: https://docs.cloud.oracle.com/iaas/Content/File/Concepts/filestorageoverview.htm

As per above doc, below is the statement:
"Oracle Cloud Infrastructure users require resource permissions to create, delete, and manage resources. Without the appropriate IAM permissions, you cannot export a file system through a mount target. Until a file system has been exported, Compute instances cannot mount it. "
In a question , already followed the steps to mount the shared file system on your Oracle Linux virtual Instance, however issue is still unable to access the shared file system from your Linux instance..
IAM policy is ok and that is why able to follow the step to mount it, however file system is not accessible due to ports are not open through security list , so correct option should be A.