Django Django 3

Question 1

What does the related_name argument on a ForeignKey control?

Accepted Answer

The reverse accessor name from the related model

Answer

The database column name

Answer

The on_delete behavior

Answer

The field's verbose name

Question 2

Which on_delete option deletes child rows when the referenced parent is deleted?

Accepted Answer

CASCADE

Answer

PROTECT

Answer

SET_NULL

Answer

DO_NOTHING

Question 3

What is the purpose of Django's select_related() method?

Accepted Answer

Reduce queries by SQL-joining foreign key relations

Answer

Filter a queryset by related fields

Answer

Order results by a related field

Answer

Cache a queryset in Redis

Question 4

In Django REST framework, what class is commonly used to convert model instances to JSON?

Accepted Answer

Serializer

Answer

Renderer

Answer

Validator

Answer

Paginator

Question 5

Which file maps URL patterns to views in a Django app?

Accepted Answer

urls.py

Answer

views.py

Answer

settings.py

Answer

apps.py

Question 6

What does Django's QuerySet method values() return?

Accepted Answer

Dictionaries instead of model instances

Answer

A single column as a flat list

Answer

Only the primary keys

Answer

A count of rows

Question 7

Which command opens an interactive Python shell with Django's settings loaded?

Accepted Answer

python manage.py shell

Answer

python manage.py console

Answer

python manage.py repl

Answer

python manage.py runpython