log4j Online Quiz

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

A - It is designed to handle Java Exceptions from the start.

B - It uses multiple levels, namely ALL, TRACE, DEBUG, INFO, WARN, ERROR and FATAL.

C - The format of the log output can be easily changed by extending the Layout class.

D - All of the above.

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

A - The Filter object is used to analyze logging information and make further decisions on whether that information should be logged or not.

B - An Appender objects can have several Filter objects associated with them.

C - Both of the above.

D - None of the above.

Q 3 - Which of the following method of logger print a log message in info mode?

A - public void debug(Object message)

B - public void error(Object message)

C - public void fatal(Object message)

D - public void info(Object message)

Q 4 - Which of the following level designates finer-grained informational events than the DEBUG?

A - OFF

B - TRACE

C - WARN

D - ALL

Q 5 - What is the purpose of n 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 bufferSize configuration of FileAppender?

A - logging information to be appended to the end of the same file.

B - to set the buffered writing.

C - to set the buffer size

D - None of the above.

Q 8 - Which of the following DatePattern configuration of DailyRollingFileAppender rolls over the logs at midnight each day?

A - '.' yyyy-MM

B - '.' yyyy-MM-dd

C - '.' yyyy-MM-dd-a

D - '.' yyyy-MM-dd-HH

Q 9 - The layout layer of log4j architecture provides objects which are used to format logging information in different styles.

A - false

B - true

Q 10 - The Filter objects can analyze logging information beyond level matching and decide whether logging requests should be handled by a particular Appender or ignored.

A - true

B - false