[2022] Pass Oracle 1z0-998-21 Exam Updated 76 Questions
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NEW QUESTION 14
Which two statements are true about a Virtual Cloud Network (VCN)?
- A. A VCN cannot connect to another VCN,
- B. A VCN can reside only in a single region but can cross multiple ADs.
- C. A subnet for a VCN can be defined in different availability domains (AD).
- D. A VCN can be used with only one DB system.
Answer: B,C
NEW QUESTION 15
Which two statements are true about using the local storage for the backups?
- A. Local storage backups are fast and provide fast point-in-time recovery.
- B. Availability and durability of the backup is high.
- C. Availability is high but the durability of the backup is low.
- D. Backups become unavailable if the DB system goes down.
Answer: A,D
Explanation:
Local Storage
Backups are stored locally in the Fast Recovery Area of the DB System.
Durability: Low
Availability: Medium
Back Up and Recovery Rate: High
Advantages: Optimized back up and fast point-in-time recovery.
Disadvantages: If the DB System becomes unavailable, the backup is also unavailable.
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/backingup.htm
NEW QUESTION 16
Examine the steps to enable a port on the DB system.
Identify the required steps in the correct order.
- A. 1,3,5,6,4,7
- B. 1,5,3,4,6,7
- C. 2,3,5,6,4,7
- D. 2,5,3,4,6,7 :
Answer: A
NEW QUESTION 17
Which are the three considerations for choosing a migration method?
- A. source database with TDE not enabled
- B. source database in mount state always
- C. acceptable time of system outage
- D. database version
- E. network bandwidth
Answer: C,D,E
Explanation:
https://docs.oracle.com/en/cloud/paas/exadata-cloud/csexa/considerations-migrating-premises-database-dbcs.html Some of the characteristics and factors to consider when choosing a migration method are:
Source and target database versions
Source platform and operating system
Source database character set
Quantity of data, including indexes
Methods available for data transportation
Database features and data types used
Storage for data staging
Acceptable length of system outage
Network bandwidth
NEW QUESTION 18
Examine the steps to create a backup using CLI:
Identify the required steps in correct order.
- A. 1,4,3,5,6,7
- B. 2,3,4,5,6,7
- C. 2,4,3,5,6,7
- D. 1,3,4,5,6,7
Answer: A
NEW QUESTION 19
Which three are the prerequisites and conditions for the recovering a database from Object Storage?
- A. Database must be in archivelog mode.
- B. DB system must have access to the applicable Swift endpoint or Object Storage.
- C. VCN must be configured with dynamic routing gateway.
- D. VCN must be configured with a service gateway.
- E. An auth_token is generated by Oracle Cloud Infrastructure.
Answer: B,D,E
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/recoveringOS.htm
NEW QUESTION 20
Which three are true about Transparent Data Encryption (TDE)?
- A. TDE overrides access controls configured using Oracle Database Vault.
- B. Set encrypt new table spaces parameter to false to stop encrypting the tablespaces.
- C. dbcli update_tdekey command is used to update the master encryption key for a PDB.
- D. TDE allows you to encrypt sensitive data in individual columns.
- E. TDE stores the master key outside the database in an external security module.
- F. When the TDE master encryption key is reset, backups taken using the old TDE master encryption key become obsolete.
Answer: B,C,D
NEW QUESTION 21
What is needed on the host to work with API to launch a DB system?
- A. JRE
- B. Oracle Database
- C. python 2.6 or later
- D. JDK
Answer: C
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/creatingDBsystem.htm
NEW QUESTION 22
Which two statements are true about bare metal DB systems?
- A. It can have multiple database homes with different database software edition.
- B. It can have multiple database homes, which can be of different versions.
- C. It consists of a single server with locally attached NVMe storage.
- D. It can have performance overhead due to a single server.
Answer: B,C
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Concepts/overview.htm Bare Metal DB Systems Bare metal DB systems consist of a single bare metal server running Oracle Linux 6.8, with locally attached NVMe storage. If the node fails, you can simply launch another system and restore the databases from current backups.
When you launch a bare metal DB system, you select a single Oracle Database edition that applies to all the databases on that DB system. The selected edition cannot be changed. Each DB system can have multiple database homes, which can be different versions. Each database home can have only one database, which is the same version as the database home.
NEW QUESTION 23
You administer a database that is configured in ARCHIVELOG mode. A full RMAN backup exists. In which two scenarios is RMAN incomplete recovery required?
- A. if a copy of the multiplexed control file is lost
- B. if all members of an ACTIVE online redo log group are lost when attempting to open the database
- C. if the data file of an UNDO tablespace that is in use is lost
- D. if all members of the CURRENT online redo log group are lost
- E. if SYSTEM tablespace data file is lost
Answer: A,E
NEW QUESTION 24
Which two statements are true about the network security?
- A. Access can be restricted between the tenancies and within the tenancy itself.
- B. Access between the tenancies can be restricted with the same availability domain.
- C. Subnets can be created only within an availability domain.
- D. Tenancies cannot be completely network isolated.
- E. Permissions can be used to isolate networking between compartments and VCNs.
Answer: A,E
NEW QUESTION 25
Which three are important guidelines for the DB system OS updates?
- A. Install NetworkManager on the DB system.
- B. Backup the database prior to OS upgrade.
- C. Must stop the clusterware in both nodes on 2-node RAC DB system.
- D. Do not remove the packages from the DB system.
- E. Configure DB System's VCN to allow access to the YUM repository.
Answer: B,D,E
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/updatingDB.htm OS Updates Before you update the OS, review the following important guidelines and information:
Back up your DB system's databases prior to attempting an OS update.
Do not remove packages from a DB system. However, you might have to remove custom RPMs (packages that were installed after the system was provisioned) for the update to complete successfully.
Warning
Do not install NetworkManager on the DB system. Installing this package and rebooting the system results in severe loss of access to the system.
Oracle recommends that you test any updates thoroughly before updating a production system.
The image used to launch a DB system is updated regularly with the necessary patches. After you launch a DB system, you are responsible for applying the required OS security updates published through the Oracle public YUM server.
To apply OS updates, the DB system's VCN must be configured to allow access to the YUM repository. For more information
NEW QUESTION 26
Examine the command:
dbcli describe-component
What information will you get by executing this command?
- A. displays all the components related to the Object Storage
- B. displays the installed patch versions for the DB system
- C. displays all the storage objects created
- D. displays the latest patch available for the DB system
Answer: B
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/References/dbacli.htm Use the dbcli describe-component command to show the installed and available patch versions for the server, storage, and/or database home components in the DB system.
NEW QUESTION 27
What are the three considerations provided by the shapes for bare metal and VM DB systems?
- A. For all the shapes of the DB systems, block volume storage can be used.
- B. For all the shapes of the VM DB systems, storage can be scaled up.
- C. For all the shapes of the bare metal DB systems, CPUs can be scaled up.
- D. For all the shapes of the VM DB systems, a two node DB system can be created.
- E. For all the shapes of the bare metal DB systems, there can only be one node.
Answer: B,D,E
NEW QUESTION 28
Which two are true about RMAN encryption?
- A. Dual-mode encrypted backups can be restored only if both the password and the keystore used for encryption are available.
- B. Password encryption can be persistently configured using the CONFIGURE ENCRYPTION command.
- C. RMAN can encrypt the Oracle password file.
- D. RMAN encryption keys are stored in a database wallet.
- E. SET ENCRYPTION command overrides the CONFIGURE ENCRYPTION command settings.
Answer: A,B
NEW QUESTION 29
Examine the exhibit:
How many CPU cores and memory would a DB system would get after successful creation?
- A. 32 CPU cores and 256 GB of memory
- B. 24 CPU cores and 320 GB of memory
- C. 2 CPU cores and 256 GB of memory
- D. 16 CPU cores and 320 GB of memory
Answer: B
NEW QUESTION 30
Examine the steps to enable EM Express Console.
Identify the required steps in correct order.
- A. 1,2,5,4,7
- B. 1,3,4,7,6
- C. 1,3,5,4,7
- D. 1,2,6,4,7
Answer: A
NEW QUESTION 31
Which three are the basic security considerations for using any application securely?
- A. Use the default password allocated by the administrator while creating an account.
- B. Review user privileges to determine relevance to current work requirements.
- C. Keep up-to-date on security information and apply all the security patches.
- D. Establish who should access which system components and how often, and monitor those components.
- E. Ensure that different applications have separate Virtual Cloud Networks (VCN).
Answer: B,C,D
Explanation:
https://docs.oracle.com/cd/E66029_01/doc.732/e66033/sec_overview.htm#ITGSC108 Basic Security Considerations The following principles are fundamental to using any application securely:
Keep software up to date. This includes the latest product release and any patches that apply to it.
Limit privileges as much as possible. Users should be given only the access necessary to perform their work. User privileges should be reviewed periodically to determine relevance to current work requirements.
Monitor system activity. Establish who should access which system components, how often they should be accessed, and who should monitor those components.
Install software securely. For example, use firewalls, secure protocols (such as SSL), and secure passwords. See "Performing a Secure Network Integrity Installation" for more information.
Learn about and use Network Integrity security features. See "Implementing Network Integrity Security" for more information.
Use secure development practices. For example, take advantage of existing database security functionality instead of creating your own application security. See "Security Considerations for Developers" for more information.
Keep up to date on security information. Oracle regularly issues security-related patch updates and security alerts. You must install all security patches as soon as possible from the Oracle Technology Network web site:
http://www.oracle.com/technetwork/topics/security/alerts-086861.html
NEW QUESTION 32
You want to connect to a database in the DB system with SQL Developer. Which three are the prerequisites?
- A. Private key
- B. Open port 1521 for listener in VCN
- C. Open port 1521 on the local system
- D. SSH tunnel from local system to DB system
- E. Public key
Answer: A,B,D
NEW QUESTION 33
You want to launch a DB system that is less expensive and can be used for test and dev environments. Which type of DB system would satisfy the requirement?
- A. Bare metal DB system
- B. Exadata DB system
- C. VM DB system
- D. Autonomous transaction processing
Answer: C
NEW QUESTION 34
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