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LinkedIn Django Assessment

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LinkedIn Django Assessment

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Q1. To cache your entire site for an application in Django, you add all except which of these settings?

django.middleware.common.CommonMiddleware
django.middleware.cache.UpdateCacheMiddleware
django.middleware.cache.FetchFromCacheMiddleware
django.middleware.cache.AcceleratedCacheMiddleware

Q2. In which programming language is Django written?

C++
Java
Python
Ruby

Q3. To automatically provide a value for a field, or to do validation that requires access to more than a single field, you should override the**_** method in the**_** class.

validate(); Model
group(); Model
validate(); Form
clean(); Field

Q4. A client wants their site to be able to load “Rick & Morty” episodes by number or by title—e.g., shows/3/3 or shows/picklerick. Which URL pattern do you recommend?

url(r’shows/int:season/int:episode/’, views.episode_number)
path(‘shows/int:season/int:episode/’, views.episode_number),
path(‘shows/int:season/int:episode’, views.episode_number),
url(r’^show/(?P[0-9]+)/(?P[0-9]+)/$’, views.episode_number),

Q5. How do you determine at startup time if a piece of middleware should be used?

Raise MiddlewareNotUsed in the init function of your middleware.
Implement the not_used method in your middleware class.
List the middleware beneath an entry of django.middleware.IgnoredMiddleware.
Write code to remove the middleware from the settings in [app]/init.py.

Q6. How do you turn off Django’s automatic HTML escaping for part of a web page?

Place that section between paragraph tags containing the autoescape=off switch.
Wrap that section between { percentage mark autoescape off percentage mark} and {percentage mark endautoescape percentage mark} tags.
Wrap that section between {percentage mark autoescapeoff percentage mark} and {percentage mark endautoescapeoff percentage mark} tags.
You don’t need to do anything—autoescaping is off by default.

Q7. Which step would NOT help you troubleshoot the error “django-admin: command not found”?

Check that the bin folder inside your Django directory is on your system path.
Make sure you have activated the virtual environment you have set up containing Django.
Check that you have installed Django.
Make sure that you have created a Django project.

Q8. Every time a user is saved, their quiz_score needs to be recalculated. Where might be an ideal place to add this logic?

template
model
database
view

Q9. What is the correct way to begin a class called “Rainbow” in Python?

Rainbow {}
export Rainbow:
class Rainbow:
def Rainbow:

Q10. You have inherited a Django project and need to get it running locally. It comes with a requirements.txt file containing all its dependencies. Which command should you use?

django-admin startproject requirements.txt
python install -r requirements.txt
pip install -r requirements.txt
pip install Django

Q11. Which best practice is NOT relevant to migrations?

To make sure that your migrations are up to date, you should run updatemigrations before running your tests.
You should back up your production database before running a migration.
Your migration code should be under source control.
If a project has a lot of data, you should test against a staging copy before running the migration on production.

Q12. What will this URL pattern match? url(r’^$’, views.hello)

a string beginning with the letter Ra string beginning with the letter R
an empty string at the server root
a string containing ^ and $a string containing ^ and $
an empty string anywhere in the URLan empty string anywhere in the URL

Q13. What is the typical order of an HTTP request/response cycle in Django?

URL > view > template
form > model > view
template > view > model
URL > template > view > model

Q14. Django’s class-based generic views provide which classes that implement common web development tasks?

concrete
thread-safe
abstract
dynamic

Q15. Which skills do you need to maintain a set of Django templates?

template syntax
HTML and template syntax
Python, HTML, and template syntax
Python and template syntax

Q17. How would you define the relationship between a star and a constellation in a Django model?
[

Q18. Which is NOT a valid step in configuring your Django 2.x instance to serve up static files such as images or CSS?

In your urls file, add a pattern that includes the name of your static directory.
Create a directory named static inside your app directory.
Create a directory named after the app under the static directory, and place static files inside.
Use the template tag {percentage mark load static percentage mark}.

Q19. What is the correct way to make a variable available to all of your templates?

Set a session variable.
Use a global variable.
Add a dictionary to the template context.
Use RequestContext.

Q20. Should you create a custom user model for new projects?

No. Using a custom user model could break the admin interface and some third-party apps.
Yes. It is easier to make changes once it goes into production.
No. Django’s built-in models.User class has been tried and tested—no point in reinventing the wheel.
Yes, as there is no other option.

Q21. You want to create a page that allows editing of two classes connected by a foreign key (e.g., a question and answer that reside in separate tables). What Django feature can you use?

actions
admin
mezcal
inlines

Q22. Why are QuerySets considered “lazy”?

The results of a QuerySet are not ordered.
QuerySets do not create any database activity until they are evaluated.
QuerySets do not load objects into memory until they are needed.
Using QuerySets, you cannot execute more complex queries.

Q23. You receive a MultiValueDictKeyError when trying to access a request parameter with the following code: request.GET[‘search_term’]. Which solution will NOT help you in this scenario?

Switch to using POST instead of GET as the request method.
Make sure the input field in your form is also named “search_term”.
Use MultiValueDict’s GET method instead of hitting the dictionary directly like this: request.GET.get(‘search_term’, ”).
Check if the search_term parameter is present in the request before attempting to access it.

Q24. Which function of Django’s Form class will render a form’s fields as a series of
tags?

show_fields()
as_p()
as_table()
fields()

Q25. You have found a bug in Django and you want to submit a patch. Which is the correct procedure?

Fork the Django repository GitHub.
Submit a pull request.
all of these answers.
Run Django’s test suite.

Q26. Django supplies sensible default values for settings. In which Python module can you find these settings?

django.utils.default_settings.py
django.utils.global_settings.py
django.conf.default_settings.py
django.conf.global_settings.py

Q27. Which variable name is best according to PEP 8 guidelines?

numFingers
number-of-Fingers
number_of_fingers
finger_num

Q28. A project has accumulated 500 migrations. Which course of action would you pursue?

Manually merge your migration files to reduce the number
Don’t worry about the number
Try to minimize the number of migrations
Use squashmigrations to reduce the number

Q29. What does an F() object allow you when dealing with models?

perform db operations without fetching a model object
define db transaction isolation levels
use aggregate functions more easily
build reusable QuerySets

Q30. Which is not a django filed type for integers?

SmallIntegerField
NegativeIntegerField
BigAutoField
PositiveIntegerField

Q31. Which will show the currently installed version?

print (django.version)
import django django.getVersion()
import django django.get_version()
python -c django –version

Q32. You should use the http method ** to read data and ** to update or create data

read;write
get; post
post; get
get; patch

Q33. When should you employ the POST method over GET for submitting data?

when efficiency is important
for caching data
help your browser with debugging
data may be sensitive

Q34. When to use the Django sites framework?

if your single installation powers more than one site
if you need to serve static as well as dynamic content
if you want your app have a fully qualified domain name
if you are expecting more than 10.000 users

Q35. Which infrastructure do you need:
title=models.charfield(max_length=100, validators=[validate_spelling])

inizialized array called validators
a validators file containing a function called validate_spelling imported at the top of model
a validators file containing a function called validate imported at the top of model
spelling package imported at the top of model

Q36. What decorator is used to require that a view accepts only the get and head methods?

require_safe()
require_put()
require_post()
require_get()

Q37. How would you define the relation between a book and an author – book has only one author.

Q38. What is a callable that takes a value and raises an error if the value fails?

validator
deodorizer
mediator
regular expression

Q39. To secure an API endpoint, making it accessible to registered users only, you can replace the rest_framework.permissions.allowAny value in the default_permissions section of your settings.py to

rest_framework.permissions.IsAdminUser
rest_framework.permissions.IsAuthenticated
rest_framework.permissions.IsAuthorized
rest_framework.permissions.IsRegistered

Q40. Which command would you use to apply a migration?

makemigration
update_db
applymigration
migrate

Q41. Which type of class allows QuerySets and model instances to be converted to native Python data types for use in APIs?

objectwriters
serializers
picklers
viewsets

Q42. How should the code end?

{ percentage else percentage}
{percentage endif percentage}
Nothing needed
{percentage end percentage}

Q43 Which code block will create a serializer?
from rest_framework import serializers
from .models import Planet

Q44 Which class allows you to automatically create a Serializer class with fields and validators that correspond to your model’s fields?

ModelSerializer
Model
DataSerializer
ModelToSerializer

Q45 Which command to access the built-in admin tool for the first time?

django-admin setup
django-admin runserver
python manage.py createuser
python manage.py createsuperuser

Q46. Virtual environments are for managing dependencies. Which granularity works best?

you should set up a new virtualenv for each Django project
They should not be used
Use the same venv for all your Django work
Use a new venv for each Django app

Q47. What executes various Django commands such as running a webserver or creating an app?

migrate.py
wsgi.py
manage.py
runserver

Q48. What do Django best practice suggest should be “fat”?

models
controllers
programmers
clients

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