2022 Realistic 1z0-998-21 Dumps Latest Oracle Practice Tests Dumps
1z0-998-21 Dumps PDF - 1z0-998-21 Real Exam Questions Answers
NEW QUESTION 25
Which Oracle database editions and versions are supported on bare metal DB systems?
- A. all database editions and versions starting from 18c
- B. all database editions and versions starting from 12c
- C. all database editions and DB versions starting from 11.2
- D. all database editions and all versions
Answer: D
NEW QUESTION 26
Which two are automatically managed in Oracle Autonomous Data Warehouse database?
- A. back up and recovery
- B. creating the compartment
- C. creating the bucket
- D. patching and upgrading
- E. creating the VCN
Answer: A,D
Explanation:
https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/using-oracle-autonomous-data-warehouse-shared-exadata-infrastructure.pdf
NEW QUESTION 27
Which three are important guidelines for the DB system OS updates?
- A. Configure DB System's VCN to allow access to the YUM repository.
- B. Must stop the clusterware in both nodes on 2-node RAC DB system.
- C. Install NetworkManager on the DB system.
- D. Do not remove the packages from the DB system.
- E. Backup the database prior to OS upgrade.
Answer: A,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 28
Which two statements are true about the regions and availability domains (AD)?
- A. OCI is hosted in multiple regions and multiple availability domains.
- B. OCI is hosted in one region with multiple availability domains.
- C. A region can have only one AD for disaster recovery capability.
- D. Regions provide disaster recovery capability.
Answer: B,C
NEW QUESTION 29
What is true about the creation of subnets in a VCN?
- A. A subnet is created in multiple availability domains for high availability.
- B. A subnet is created in a single availability domain.
- C. While creating a subnet, the route table must be specified.
- D. While creating a subnet, security lists must be specified.
Answer: B
Explanation:
SUBNETS
Subdivisions you define in a VCN (for example, 10.0.0.0/24 and 10.0.1.0/24). Subnets contain virtual network interface cards (VNICs), which attach to instances. Each subnet consists of a contiguous range of IP addresses that do not overlap with other subnets in the VCN. You can designate a subnet to exist either in a single availability domain or across an entire region (regional subnets are recommended). Subnets act as a unit of configuration within the VCN: All VNICs in a given subnet use the same route table, security lists, and DHCP options (see the definitions that follow). You can designate a subnet as either public or private when you create it. Private means VNICs in the subnet can't have public IP addresses. Public means VNICs in the subnet can have public IP addresses at your discretion. See Access to the Internet.
https://docs.cloud.oracle.com/en-us/iaas/Content/Network/Concepts/overview.htm
NEW QUESTION 30
Which three are the features of the different DB systems in Oracle Cloud Infrastructure?
- A. CPUs can be scaled up for bare metal and Exadata DB systems.
- B. Storage can be scaled up for the VM DB systems only.
- C. All DB systems can have multiple database editions and versions.
- D. CPU can be scaled up for full rack only in Exadata DB systems.
- E. RAC is available in VM and Exadata DB systems.
Answer: A,B,E
NEW QUESTION 31
You want to connect to a database in the DB system with SQL Developer. Which three are the prerequisites?
- A. SSH tunnel from local system to DB system
- B. Open port 1521 on the local system
- C. Open port 1521 for listener in VCN
- D. Private key
- E. Public key
Answer: A,C,D
NEW QUESTION 32
You want to connect to a DB system with SSH using putty from a Windows machine. Which two are the prerequisites?
- A. OCID
- B. Public IP of the DB system
- C. Private key
- D. Public key
- E. Listener port number
Answer: C,D
NEW QUESTION 33
You want to migrate a schema from on premises database to OCI database. Which two can be used to achieve this?
- A. Data Guard
- B. Data Pump
- C. Golden Gate
- D. SQL Developer
Answer: A,C
NEW QUESTION 34
Which two important factors need to considered while configuring a DB system?
- A. Dynamic Routing Gateway
- B. Network Time Protocol
- C. Transparent Data Encryption
- D. Cluster Time Synchronization Service
- E. Service Gateway
Answer: B,C
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/configuringDB.htm
NEW QUESTION 35
You want to launch a DB system for real application testing in which you need to have multiple database homes with different database versions. Which DB system would meet these requirements?
- A. Bare metal DB system with any database edition
- B. VM DB system with any database edition
- C. VM DB system with any database edition except standard edition
- D. Bare metal DB system with any database edition except standard edition
Answer: D
NEW QUESTION 36
Which two statements are true about scaling up the DB systems?
- A. Storage for the VM DB system can be scaled up.
- B. Storage for the bare metal DB system can be scaled up.
- C. CPU cores for the VM DB system can be scaled up.
- D. CPU cores for the bare metal DB system can be scaled up.
Answer: A,D
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/managingDBsystem.htm
NEW QUESTION 37
Which two statements are true about the network security?
- A. Tenancies cannot be completely network isolated.
- B. Permissions can be used to isolate networking between compartments and VCNs.
- C. Access between the tenancies can be restricted with the same availability domain.
- D. Access can be restricted between the tenancies and within the tenancy itself.
- E. Subnets can be created only within an availability domain.
Answer: B,D
NEW QUESTION 38
You want to connect to a DB system from your local system, for that you need to update the security list. Examine the steps to update the security list:
Identify the required steps in the correct order.
- A. 1,2,3,5,4,6,7
- B. 3,1,2,4,5,7,6
- C. 1,3,2,5,4,7,6
- D. 1,3,2,4,5,6,7
Answer: A
NEW QUESTION 39
Which is the default choice for the DNS names resolution for the instances in your VCN?
- A. Custom Resolver
- B. Internet Gateway
- C. Dynamic Routing Gateway
- D. Internet and VCN Resolver
Answer: D
Explanation:
DEFAULT CHOICE: INTERNET AND VCN RESOLVER
This is an Oracle-provided option that includes two parts:
Internet Resolver: Lets instances resolve hostnames that are publicly published on the internet. The instances do not need to have internet access by way of either an internet gateway or a connection to your on-premises network (such as an IPSec VPN connection through a DRG ).
VCN Resolver: Lets instances resolve hostnames (which you can assign) of other instances in the same VCN. For more information, see About the DNS Domains and Hostnames.
https://docs.cloud.oracle.com/en-us/iaas/Content/Network/Concepts/dns.htm#choices
NEW QUESTION 40
Which two statements are true about using the Object Storage for the backups?
- A. Availability is high but the durability of the backup is low.
- B. Virtual Cloud Network must be configured with dynamic routing gateway.
- C. Availability and durability of the backup is high.
- D. Availability is low but the durability of the backup is high.
- E. Virtual Cloud Network must be configured with an internet gateway.
Answer: C,E
NEW QUESTION 41
Examine the steps:
- A. 1,3,6,7,4,5
- B. 1,3,5,6,7,4,5
- C. 1,2,5,6,4,7,5
- D. 1,2,5,6,7,4,5
Answer: D
Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/patchingDB.htm
NEW QUESTION 42
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