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Showing 581–600 of 2015 results

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Data structures · Ordering / Sequencing
Difficulty: Easy
A FIFO queue receives job IDs [496, 770, 536, 859, 220] in that order. Arrange the IDs in removal order.
QueuesFIFO
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Data structures · Ordering / Sequencing
Difficulty: Medium
Push [9436, 9332, 5277, 8227, 9946] onto an empty stack in the stated order. Arrange the values in successive pop order.

StacksLIFO

Data structures · Ordering / Sequencing

Difficulty: Easy

A FIFO queue receives job IDs [743, 357, 412, 721, 815] in that order. Arrange the IDs in removal order.

QueuesFIFO

Data structures · Ordering / Sequencing

Difficulty: Medium

Push [2876, 6574, 6979, 3303, 2492] onto an empty stack in the stated order. Arrange the values in successive pop order.

StacksLIFO

Data structures · Ordering / Sequencing

Difficulty: Easy

A FIFO queue receives job IDs [767, 832, 252, 221, 961] in that order. Arrange the IDs in removal order.

QueuesFIFO

Data structures · Ordering / Sequencing

Difficulty: Medium

Push [7991, 7043, 9141, 3026, 3660] onto an empty stack in the stated order. Arrange the values in successive pop order.

StacksLIFO

Data structures · Ordering / Sequencing

Difficulty: Medium

Arrange the dependent steps for this queue setup task. Both enqueues must finish before the dequeue.

Queue setupDependencies

Data structures · True or False

Difficulty: Medium

True or false: A hash collision means two keys must be equal.

HashingConcept checks

Data structures · True or False

Difficulty: Medium

True or false: A FIFO queue removes the oldest enqueued item before more recently enqueued items.

QueuesConcept checks

Data structures · True or False

Difficulty: Medium

True or false: Every node in a binary tree must have exactly two children.

TreesConcept checks

Data structures · True or False

Difficulty: Medium

True or false: A Bloom filter used without deletions may report a false positive.

MembershipConcept checks

Data structures · True or False

Difficulty: Medium

True or false: Inserting at the front of a contiguous array always takes constant time regardless of length.

ArraysConcept checks

Database design and storage · Multiple Choice

Difficulty: Medium

Which normal form requires attributes to hold single values from their defined domains rather than repeating groups?

NormalizationRelational modeling

Database design and storage · Multiple Choice

Difficulty: Medium

Which normal form removes partial dependencies of non-key attributes on part of a candidate key?

NormalizationRelational modeling

Database design and storage · Multiple Choice

Difficulty: Medium

Which commonly taught normal form removes transitive dependencies of non-key attributes on a key?

NormalizationRelational modeling

Database design and storage · Multiple Choice

Difficulty: Extra Hard

Which normal form requires every determinant of a nontrivial functional dependency to be a superkey?

NormalizationRelational modeling

Database design and storage · Multiple Choice

Difficulty: Medium

What deliberate modeling choice duplicates or combines data to improve a measured access pattern?

NormalizationRelational modeling

Database design and storage · Multiple Choice

Difficulty: Medium

What is a minimal set of attributes that uniquely identifies a row?

Key designEntity identity

Database design and storage · Multiple Choice

Difficulty: Medium

What set of attributes uniquely identifies rows even if it contains unnecessary extra attributes?

Key designEntity identity

Database design and storage · Multiple Choice

Difficulty: Medium

What identifier is created for row identity without being derived from the entity's business attributes?

Key designEntity identity

Showing 581–600 of 2015 results

1…29 30 31…101