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NEW QUESTION: 1
The command-line tool used to list a host's active incoming connections is:
A. NSLOOKUP.
B. IPCONFIG.
C. PING.
D. NETSTAT.
Answer: B
NEW QUESTION: 2
You are designing a solution that will use Azure Databricks and Azure Data Lake Storage Gen2.
From Databricks, you need to access Data Lake Storage directly by using a service principal.
What should you include in the solution?
A. shared access signatures (SAS) in Data Lake Storage
B. an application registration in Azure Active Directory (Azure AD)
C. access keys in Data Lake Storage
D. an organizational relationship in Azure Active Directory (Azure AD)
Answer: B
Explanation:
Create and grant permissions to service principal
If your selected the access method requires a service principal with adequate permissions, and you do not have one, follow these steps:
1. Create an Azure AD application and service principal that can access resources. Note the following properties:
* client-id: An ID that uniquely identifies the application.
* directory-id: An ID that uniquely identifies the Azure AD instance.
* service-credential: A string that the application uses to prove its identity.
2. Register the service principal, granting the correct role assignment, such as Storage Blob Data
3. Contributor, on the Azure Data Lake Storage Gen2 account.
References:
https://docs.databricks.com/data/data-sources/azure/azure-datalake-gen2.html
NEW QUESTION: 3
A. Online Table Redefinition
B. Edition-Based Table Redefinition
C. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD to move the indexes.
D. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD ONLINE to move the indexes
E. Oracle Data Pump
Answer: A
Explanation:
Explanation
* Oracle Database provides a mechanism to make table structure modifications without significantly affecting the availability of the table. The mechanism is called online table redefinition. Redefining tables online provides a substantial increase in availability compared to traditional methods of redefining tables.
* To redefine a table online:
Choose the redefinition method: by key or by rowid
* By key-Select a primary key or pseudo-primary key to use for the redefinition. Pseudo-primary keys are unique keys with all component columns having NOT NULL constraints. For this method, the versions of the tables before and after redefinition should have the same primary key columns. This is the preferred and default method of redefinition.
* By rowid-Use this method if no key is available. In this method, a hidden column named M_ROW$$ is added to the post-redefined version of the table. It is recommended that this column be dropped or marked as unused after the redefinition is complete. If COMPATIBLE is set to 10.2.0 or higher, the final phase of redefinition automatically sets this column unused. You can then use the ALTER TABLE ... DROP UNUSED COLUMNS statement to drop it.
You cannot use this method on index-organized tables.
Note:
* When you rebuild an index, you use an existing index as the data source. Creating an index in this manner enables you to change storage characteristics or move to a new tablespace. Rebuilding an index based on an existing data source removes intra-block fragmentation. Compared to dropping the index and using the CREATE INDEX statement, re-creating an existing index offers better performance.
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