Question 4: right, majority of the answer on this cram exam is incorrect. TDE wallet is different from the wallet you use to connect to ADB

Question 9: If the client is behind a firewall and your network configuration requires an HTTP proxy to connect to the internet, you need to use the JDBC Thin Client 18.1 or higher which enables connections through HTTP proxies

https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/connect-jdbc-thin-wallet.html#GUID-D583E056-CB47-4860-B303-039DEDEC49B8

Question 30: It's 50-50 Many wrong answers

Question 18: Answer are C and D .
https://docs.oracle.com/en/cloud/paas/bi-cloud/bilpd/data-sync.html

Question 3: https://taliphakanozturken.wordpress.com/2020/04/05/connecting-to-an-oracle-autonomous-database-using-sql-developer/

Question 30: C is correct

Question 29: D is not possible.
Only B,C are correct

Question 23: A is correct

Question 20: Answer C

Question 9: C

Note:Connections through an HTTP proxy are only available with Oracle Client software version 12.2.0.1 or later.
.
https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/connect-preparing.html#GUID-EFAFA00E-54CC-47C7-8C71-E7868279EF3B

Question 30: Hello,
Some of the answers are wrong.

Question 15: BCD are right

Question 27: The correct answer are C and D

Question 18: Answer should be C and D.

Question 21: D is right

Question 19: AB are correct

Question 18: BD are correct

Question 17: CD correct,

Question 16: BCE Correct

Question 6: The answer is D. You simply specify the number of OCPUs and the storage capacity in TB's for the database. At any time, you may scale, increase or decrease either the OCPUs or the storage capacity.

https://www.oracle.com/database/technologies/datawarehouse-bigdata/adb-faqs.html

Question 2: correct Answer : ACD

Question 2: Aless,
SQL Developer can be started from the ADB Cloud console for import/export not only for import scenario.
D is also correct, see https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/migrating.html#GUID-0870DE62-AB2D-4F41-9D54-53632DDF5B43.

for me, ABD are correct !

Question 26: Correct Should be "A"

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
How does Oracle Autonomous Database provide data security?

Oracle Autonomous Database protects against both external attacks and malicious internal users:

All data is encrypted at rest using transparent data encryption.Network connections from clients to ADB are also encrypted using the client credentials wallet. Using client credential wallets includes both server and client-side authentication and provides the highest level of security.

Oracle automatically applies all security updates to ensure data is not vulnerable.

Customers are not given OS logons or SYSDBA privileges to prevent phishing attacking.

Additional in-database features such as Database Valut, Virtual Private Database and Data Redaction are also available.
Is Data Redaction available with Oracle Autonomous Database?

Yes, data redaction is part of ADB.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
https://www.oracle.com/database/technologies/datawarehouse-bigdata/adb-faqs.html

Question 26: The correct answer: A

https://www.oracle.com/database/technologies/datawarehouse-bigdata/adb-faqs.html#SECURITY-BOOKMARK

Question 26: A is correct - see https://www.oracle.com/database/technologies/datawarehouse-bigdata/adb-faqs.html#SECURITY-BOOKMARK

Question 15: A is wrong, B is correct.
"In autonomous database, no logins are allowed to the OS. No root or SYSDBA logins are allowed. The only allowed logins are as admin, privileged default autonomous database user, or regular database user."

Question 16: bce is correct

Question 2: It is ACE

Question 15: Answer should be B. C. D

Question 26: Correct answer in A both Data redaction and TDE are available

ref: https://www.oracle.com/database/technologies/datawarehouse-bigdata/adb-faqs.html