Django Django 5

Question 1

What does Django's atomic() context manager guarantee for a block of database operations?

Accepted Answer

All succeed together or none are committed

Answer

Operations run in parallel

Answer

Queries are cached

Answer

Migrations are skipped

Question 2

Which queryset method counts rows efficiently in the database?

Accepted Answer

count()

Answer

len()

Answer

size()

Answer

total()

Question 3

What does prefetch_related() optimize compared to select_related()?

Accepted Answer

Many-to-many and reverse foreign key relations

Answer

Single forward foreign keys only

Answer

Raw SQL queries

Answer

Static file loading

Question 4

In a Django form, what does is_valid() do?

Accepted Answer

Run validation and populate cleaned_data

Answer

Save the form to the database

Answer

Render the form HTML

Answer

Reset the form fields

Question 5

Which setting lists the apps Django loads for a project?

Accepted Answer

INSTALLED_APPS

Answer

MIDDLEWARE

Answer

TEMPLATES

Answer

DATABASES

Question 6

What does the Q object enable in a Django query?

Accepted Answer

Complex OR/AND conditions in filters

Answer

Quoting raw SQL

Answer

Quick caching

Answer

Query logging

Question 7

Which command creates an administrative superuser account?

Accepted Answer

python manage.py createsuperuser

Answer

python manage.py adduser

Answer

python manage.py makeadmin

Answer

python manage.py superuser