log4j Online Quiz

Q 1 - Which of the following is correct about log4j?

A - The target of the log output as well as the writing strategy can be altered by implementations of the Appender interface.

B - It is fail-stop.

C - log4j does not guarantee that each log statement will be delivered to its destination.

D - All of the above.

Q 2 - Which of the following is correct about LogManager object?

A - The LogManager object manages the logging framework.

B - It is responsible for reading the initial configuration parameters from a system-wide configuration file or a configuration class.

C - Both of the above.

D - None of the above.

Q 3 - Which of the following is correct about filter in Appender?

A - The Filter objects can analyze logging information beyond level matching and decide whether logging requests should be handled by a particular Appender or ignored.

B - The filter may be a console, a file, or another item depending on the appender.

C - The filter is required to control the filtration of the log messages.

D - Appender can have a filter associated with it independent of the logger level.

Q 4 - Which of the following level designates informational messages that highlight the progress of the application at coarse-grained level?

A - DEBUG

B - ERROR

C - FATAL

D - INFO

Q 5 - What is the purpose of t character used in the conversionPattern of PatternLayout object?

A - Outputs the platform dependent line separator character or characters.

B - Used to output the priority of the logging event.

C - Used to output the number of milliseconds elapsed from the construction of the layout until the creation of the logging event.

D - Used to output the name of the thread that generated the logging event.

Q 6 - What is the purpose of X character used in the conversionPattern of PatternLayout object?

A - Used to output the NDC (nested diagnostic context) associated with the thread that generated the logging event.

B - Used to print the information stored in the MDC against the key.

C - Used to print a % sign.

D - Used to Left pad with spaces if the category name is less than 20 characters long.

Q 7 - What is the purpose of immediateFlush configuration of FileAppender?

A - output stream to the file being flushed with each append operation.

B - to set the platform-specific encoding scheme.

C - to set the threshold level for this appender.

D - to set the name of the log file.

Q 8 - What is the purpose of maxFileSize configuration of RollingFileAppender?

A - to set the critical size of the file above which the file will be rolled.

B - to set the number of backup files to be created.

C - Both of the above.

D - None of the above.

Q 9 - What is the purpose of sql configuration of JDBCAppender?

A - to set the driver class to the specified string.

B - to set the database password.

C - to specify the SQL statement to be executed every time a logging event occurs.

D - None of the above.

Q 10 - Appender can have a threshold level associated with it independent of the logger level.

A - true

B - false