Question 1 (2 points)

Saved

A good use of a data warehouse would be to keep track of the sales in real time across a retail store's outlets.

Question 1 options:

	True
	False

Question 2 (2 points)

All of the following can be accomplished via a dashboard except:

Question 2 options:

assist in data-driven decisions

Add new customers to the data warehouse

monitor KPIs

provide a visualization, thus reducing cognitive load

provide interaction so the user can drill down, and/or zoom out

Question 3 (2 points)

Saved

If a date and time is captured in a dimension table within a data warehouse, then the granularity of the data would be daily.

Question 3 options:

	True
	False

Question 4 (2 points)

Distributed databases are more complex than a single-node system.

Question 4 options:

	True
	False

Question 5 (2 points)

In a ______________ database system, the data is split across multiple databases. Compared to a ______________ database system where the data is replicated in its entiretly across multiple databases.

Question 5 options:

shard | redundant

high-availability | big-compute

big-compute | redundant

big-compute | high-availability

Question 6 (2 points)

A distributed database aids in data recovery should there be a failure in a particular node of the database.

Question 6 options:

	True
	False

Question 7 (1 point)

Within an NoSQL database, the keyspace defines how many partitions the data is spread across.

Question 7 options:

	True
	False

Question 8 (1 point)

Performance in an NoSQL database becomes degraded once the number of partitions exceeds 256.

Question 8 options:

	True
	False

Question 9 (1 point)

Key-value stores may not be the fastest databases, but they take up the least space.

Question 9 options:

	True
	False

Question 10 (1 point)

A NoSQL database can scale vertically and horizontally.

Question 10 options:

	True
	False

Question 11 (1 point)

Data from a data pipeline is typically used in all of these applications except for:

Question 11 options:

OLAP systems

Data Mining applications

Business Intelligence applications

OLTP systems

Question 12 (1 point)

During ETL, within the loading process, the data is cleaned, and converted to a common format.

Question 12 options:

	True
	False

Question 13 (1 point)

The rate at which data becomes available and received is referred to as which "V" of Big Data?

Question 13 options:

Volume

Velocity

Variety

Value

Veracity

Question 14 (1 point)

All of the following are challenges of big data except:

Question 14 options:

	The inability to merge data from different sources together.
	Organizations struggle to keep pace with the speed of data.
	Preparing and curating the data can take as much as 50 to 80 percent of a data scientist's time.
	Technology continues to change and it is difficulty to keep up with. Submit Quiz2 of 14 questions saved