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Azure Databricks Kantar Day 7

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Azure Databricks Kantar Day 7
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which among the following is a predictive optimization operation to reduce storage costs by deleting data files no longer referenced by the table

CHECKSUM

VACUUM

OPTIMIZE

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which among the following was previously called Delta caching?

Disk Caching

Manual Caching

Automatic Caching

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

______________ introduces a collection of capabilities that enable you to use cloud-based lifecycle policies on cloud object storage containing Delta tables.

Adaptive query

Cost based optimizer

Archival support

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Spark SQL can use a __________ to improve query plans.

Cost-based optimizer (CBO)

Archival support

Adaptive query

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A __________________takes an array, implements how the array is processed, and what the result of the computation will be.

higher-order function

lambda function

delta parameter

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A _____________is a join in which the condition contains predicates specifying that a value from one relation is between two values from the other relation.

point in time join

point in interval range join

point in interval outer join

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ________________ is a join in which the condition contains predicates specifying an overlap of intervals between two values from each relation.

point in interval range join

interval overlap outer join

interval overlap range join

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