HTTP foundation

Question 1

What interface represents a session object?

Answer 1

Symfony\Component\HttpFoundation\Session\SessionInterface

Question 2

How do you check the contents of the flashbag without removing it?

Answer 2

By using peek(string $type, array $default = []) method.

Question 3

What is the type of the object that is used to store response headers?

Answer 3

Symfony\Component\HttpFoundation\ResponseHeaderBag

Question 4

What are possible objects to represent a response?

Answer 4

Symfony\Component\HttpFoundation\Response
Symfony\Component\HttpFoundation\RedirectResponse
Symfony\Component\HttpFoundation\JsonResponse
Symfony\Component\HttpFoundation\StreamedResponse
Symfony\Component\HttpFoundation\BinaryFileResponse

Question 5

What are available argument value resolvers?

Answer 5

Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestAttributeValueResolver
Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestValueResolver
Symfony\Component\HttpKernel\Controller\ArgumentResolver\ServiceValueResolver
Symfony\Component\HttpKernel\Controller\ArgumentResolver\SessionValueResolver
Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver
Symfony\Component\HttpKernel\Controller\ArgumentResolver\VariadicValueResolver
Symfony\Component\Security\Http\Controller\UserValueResolver
Sensio\Bundle\FrameworkExtraBundle\Request\ArgumentValueResolver\Psr7ServerRequestResolver

Question 6

What type of object represents uploaded file?

Answer 6

Symfony\Component\HttpFoundation\File\UploadedFile

Question 7

What request object property represents the $_POST data?

Answer 7

request

Question 8

What request object property represents the $_GET data?

Answer 8

query

Question 9

What types of objects are used as bags by the request property?

Answer 9

Symfony\Component\HttpFoundation\ParameterBag
Symfony\Component\HttpFoundation\InputBag
Symfony\Component\HttpFoundation\FileBag
Symfony\Component\HttpFoundation\ServerBag
Symfony\Component\HttpFoundation\HeaderBag

Question 10

Where from is Request::$languages data taken?

Answer 10

Accept-Language header

Question 11

Where from is Request::$charsets data taken?

Answer 11

Accept-Charset header

Question 12

Where from is Request::$encodings data taken?

Answer 12

Accept-Encoding header

Question 13

Where from is Request::$acceptableContentTypes data taken?

Answer 13

Accept header

Question 14

What are possible session operations?

Answer 14

open
read
write
close
gc
close

Question 15

What are standard session handlers?

Answer 15

Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler
Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler
Symfony\Component\HttpFoundation\Session\Storage\Handler\MigratingSessionHandler
Symfony\Component\HttpFoundation\Session\Storage\Handler\RedisSessionHandler
Symfony\Component\HttpFoundation\Session\Storage\Handler\MongoDbSessionHandler
Symfony\Component\HttpFoundation\Session\Storage\Handler\NullSessionHandler

Question 16

What session storage engine should be used when writing Unit tests?

Answer 16

Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage

Question 17

What session storage engine should be used when writing Functional tests?

Answer 17

Symfony\Component\HttpFoundation\Session\Storage\MockFileSessionStorage

Question 18

What methods are defined by Symfony\Component\HttpFoundation\Session\Attribute\AttributeBagInterface?

Answer 18

has(string $name);
get(string $name, $default = null);
set(string $name, $value);
all();
replace(array $attributes);
remove(string $name);

Question 19

What are the methods defined by Symfony\Component\HttpFoundation\Session\Flash\FlashBagInterface?

Answer 19

add()
set()
get()
setAll()
all()
peek()
peekAll()
has()
keys()
clear()