Symfony Components Quiz

Alexandra Negrea
Quiz by Alexandra Negrea, updated more than 1 year ago
Alexandra Negrea
Created by Alexandra Negrea over 6 years ago
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Expert Symfony Quiz on Symfony Components Quiz, created by Alexandra Negrea on 05/19/2015.

Resource summary

Question 1

Question
What functions can you call on an instance of \Symfony\Component\ClassLoader\ClassLoader, apart from the register() function?
Answer
  • $loader->addPrefix('Twig_', __DIR__.'/vendor/twig/twig/lib');
  • $loader->setUseIncludePath(true);
  • $loader->addPrefixes(array( 'Symfony' => __DIR__.'/../vendor/symfony/symfony/src', 'Monolog' => __DIR__.'/../vendor/monolog/monolog/src', ));
  • $loader->mapClass(Twig_', __DIR__.'/vendor/twig/twig/lib');

Question 2

Question
What classes allow you to cache the mapping from a class to its containing file?
Answer
  • ApcClassLoader
  • AppClassLoader
  • XDebugClassLoader
  • XcacheClassLoader

Question 3

Question
How can you instantiate an ApcClassLoader?
Answer
  • new ApcClassLoader($loader, sha1(__FILE__));
  • new ApcClassLoader($loader);
  • new ApcClassLoader(sha1(__FILE__), $loader);
  • new ApcClassLoader('../app/cache', $loader);

Question 4

Question
Two class loaders can co-exist in the application?
Answer
  • True
  • False

Question 5

Question
How many classes does the class loader component have?
Answer
  • Less than 10
  • About 20
  • More than 40

Question 6

Question
you can define a new file loader in Symfony, if the new loader class :
Answer
  • is registered in yml as a service with the config.file_loader tag
  • is registered with the DelagatingLoader
  • implements the LoaderInterface
  • extends the abstract FileLoader class

Question 7

Question
You should merge all your configuration files into one and use it as cache.
Answer
  • True
  • False

Question 8

Question
What class in the Config Component helps you manage and check if the generate cache file containing all the configuration is valid and if not regenerate it?
Answer
  • CacheConfig
  • ConfigurationCache
  • ConfigLoaderCache
  • ConfigCache

Question 9

Question
In the context of a TreeBuilder, which of the following are valid node types?
Answer
  • string
  • scalar
  • array
  • enum
  • serviceId
  • integer
  • boolean
  • float
  • parameter
  • variable

Question 10

Question
Which of the following are valid ways to define a scalar node type? (to replace .... below) $treeBuilder ->children() ..... ->end();
Answer
  • ->node('name', 'scalar')
  • ->scalarNode('name')
  • ->addScalarNode('name')
  • ->nodeName('scalar')
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