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 log4j.properties?

A - The log4j.properties file is a log4j configuration file which keeps properties in key-value pairs.

B - By default, the LogManager looks for a file named log4j.properties in the CLASSPATH.

C - Both of the above.

D - None of the above.

Q 3 - Which of the following method of logger print a log message in debug 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 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 p 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 Filename 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 - Which of the following DatePattern configuration of DailyRollingFileAppender rolls over the logs at the end of each month and at the beginning of the next month?

A - '.' yyyy-MM

B - '.' yyyy-MM-dd

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

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

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

A - to set the jdbc URL.

B - to set the database user name.

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

D - None of the above.

Q 10 - By default, the LogManager looks for a file named log4j.properties in the CLASSPATH.

A - false

B - true