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Database Management System DBMS
4 followers study24x7 20 Nov 2024 11:08 AM study24x7 study24x7

How can you enable automatic scaling in a cloud-based NoSQL database service?

A

SET AUTOSCALE ON

B

MODIFY DATABASE SET SCALING=AUTOMATIC

C

UPDATE SCALING POLICY AUTO

D

Configure auto-scaling settings through the database's management console

Databases
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Database Management System DBMS
4 followers study24x7 20 Nov 2024 11:06 AM study24x7 study24x7

What SQL extension is used to query JSON data within a PostgreSQL database?

A

JSON_QUERY

B

SELECT JSON

C

JSONB_PATH_QUERY

D

GET_JSON_ITEM

Databases
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Database Management System DBMS
4 followers study24x7 20 Nov 2024 11:05 AM study24x7 study24x7

What is the significance of "Edge Computing" in the context of database technologies?

A

Reducing cloud computing costs

B

Increasing the physical security of data centers

C

Minimizing latency by processing data closer to the source of data generation

D

Maximizing the efficiency of centralized databases

Databases
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Database Management System DBMS
4 followers study24x7 19 Nov 2024 11:26 AM study24x7 study24x7

How do distributed ledger technologies (such as blockchain) enhance data security in database applications?

A

By centralizing data storage

B

By making data immutable and enabling transparent access

C

By encrypting all stored data

D

By limiting data access to administrators

Databases
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Database Management System DBMS
4 followers study24x7 19 Nov 2024 11:25 AM study24x7 study24x7

What differentiates Graph databases from traditional relational databases?

A

Graph databases use SQL for querying, while relational databases do not

B

Graph databases are primarily used for data warehousing

C

Graph databases are optimized for storing and querying data relationships

D

Relational databases cannot store complex, interconnected data

Databases
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Database Management System DBMS
4 followers study24x7 19 Nov 2024 11:24 AM study24x7 study24x7

In the context of database technologies, what is a "Data Lake"?

A

A type of SQL database optimized for large-scale transactions

B

A storage repository that holds a vast amount of raw data

C

A new algorithm for data encryption

D

An advanced form of data masking technique

Databases
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Database Management System DBMS
4 followers study24x7 14 Nov 2024 11:58 AM study24x7 study24x7

Which technology is commonly associated with real-time analytics and data processing?

A

Hadoop Distributed File System (HDFS)

B

Online Analytical Processing (OLAP)

C

Stream Processing

D

Data Warehousing

Databases
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Database Management System DBMS
4 followers study24x7 14 Nov 2024 11:55 AM study24x7 study24x7

How can SQL injection vulnerabilities be prevented?

A

Validating user inputs

B

Sanitizing user inputs

C

Using prepared statements

D

Sanitizing and using prepared statements

Databases
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Database Management System DBMS
4 followers study24x7 14 Nov 2024 11:54 AM study24x7 study24x7

How can "privilege escalation" vulnerabilities be addressed?

A

Regular database software updates

B

Strict password policies

C

Regular security audits

D

Security patch implementation

Databases
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Database Management System DBMS
4 followers study24x7 13 Nov 2024 10:43 AM study24x7 study24x7

A user reports losing access to a table.
See more

A

Permissions were revoked

B

The table was deleted

C

Database restored to a previous state

D

Permissions error

Databases
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Database Management System DBMS
4 followers study24x7 13 Nov 2024 10:42 AM study24x7 study24x7

How do you revoke all privileges from a user in SQL?

A

REVOKE ALL PRIVILEGES FROM user_name

B

REVOKE ACCESS FROM user_name

C

REMOVE ALL PRIVILEGES user_name

D

DENY ALL FROM user_name

Databases
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Database Management System DBMS
4 followers study24x7 13 Nov 2024 10:41 AM study24x7 study24x7

How do you create a new user with specific privileges in MySQL?

A

CREATE USER 'user_name' IDENTIFIED BY 'password'; GRANT privileges ON database_name.* TO 'user_name'

B

CREATE USER 'user_name' WITH privileges

C

USE 'user_name' WITH privileges

D

INITIATE USER 'user_name' WITH privileges

Databases
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Database Management System DBMS
4 followers study24x7 12 Nov 2024 10:37 AM study24x7 study24x7

How can you grant a user read-only access to a specific table in SQL?

A

GRANT SELECT ON table_name TO user_name

B

ALTER TABLE table_name ALLOW READ FOR user_name

C

ENABLE READ ON table_name TO user_name

D

SET READ PERMISSION ON table_name FOR user_name

Databases
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Database Management System DBMS
4 followers study24x7 12 Nov 2024 10:36 AM study24x7 study24x7

How does role-based access control (RBAC) enhance database security?

A

By encrypting all data

B

By allowing unrestricted access

C

By assigning permissions to roles, not individuals

D

By using complex passwords

Databases
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Database Management System DBMS
4 followers study24x7 12 Nov 2024 10:35 AM study24x7 study24x7

What mechanism manages and validates user access in a database?

A

Data encryption algorithms

B

Data indexing strategies

C

Authentication and authorization

D

Data normalization techniques

Databases
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Database Management System DBMS
4 followers study24x7 11 Nov 2024 12:04 PM study24x7 study24x7

What is SQL injection?

A

A method for encrypting SQL queries

B

A technique for improving SQL query performance

C

An attack by inserting malicious SQL into a query

D

A query optimization tool

Databases
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Database Management System DBMS
4 followers study24x7 11 Nov 2024 12:01 PM study24x7 study24x7

Which database security feature limits data exposure by hiding certain data elements from unauthorized users?

A

Data masking

B

Data encryption

C

Data replication

D

Data indexing

Databases
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Database Management System DBMS
4 followers study24x7 11 Nov 2024 11:37 AM study24x7 study24x7

What does the principle of least privilege in database security entail?

A

Granting users minimal permissions necessary

B

Granting all users admin privileges

C

Storing all data centrally

D

Encrypting all data

Databases
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Database Management System DBMS
4 followers study24x7 09 Nov 2024 03:06 PM study24x7 study24x7

What is the primary purpose of database encryption?

A

To increase database performance

B

To reduce data storage requirements

C

To protect sensitive data from unauthorized access

D

To improve data integrity

Databases
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Database Management System DBMS
4 followers study24x7 09 Nov 2024 03:05 PM study24x7 study24x7

How can "dimensional skew" in a data warehouse be identified and corrected?

A

By normalizing all tables to 3NF

B

By redistributing data to ensure uniform access patterns

C

By converting all OLAP cubes to ROLAP models

D

By implementing data compression techniques

Databases
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