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Python | Django | Advanced Features
Question 1
What is the main purpose of a middleware in Django?
To define model-level validations
To process request or response globally before or after the view
To handle database migrations
To render HTML templates
Question 2
Why might a developer use caching in Django?
To store user credentials permanently
To compress media files automatically
To save the results of expensive computations so that future requests are faster
To bypass authentication
Question 3
In Django’s ORM what does the function aggregate() do on a queryset?
Adds a new field to every object
Deletes duplicate records
Filters the queryset based on conditions
Returns a summary result (like sum, count, average) over the entire queryset
Question 4
What is the role of annotate() in Django ORM?
It executes raw SQL queries
C)
D)It modifies model definitions
It resets the database
It computes a value for each object in the queryset
Question 5
In Django, what is a signal used for?
To perform asynchronous database backups
To handle URL routing
To allow certain actions (like save, delete) to trigger custom behavior elsewhere in the code
To render serializers automatically
Question 6
If a heavy database query result is unlikely to change often, what is the benefit of using Django caching for that data?
It ensures data never changes
It provides faster responses by avoiding repeated queries
It automatically cleans the database
It encrypts the data
Question 7
Suppose you want total sales amount across all orders in a queryset. Which would you use in Django ORM?
aggregate()
annotate()
filter()
order_by()
Question 8
Suppose you want, for each customer, the number of orders placed by them. Which Django ORM method best fits this scenario?
aggregate()
get()
delete()
annotate()
There are 8 questions to complete.