log4j Online Quiz

Q 1 - Which of the following log4j objects are responsible for formatting logging information in different styles?

A - loggers

B - appenders

C - layouts

D - None of the above.

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

A - This is a lower-level layer of log4j architecture which provides Appender objects.

B - The Appender object is responsible for publishing logging information to various preferred destinations such as a database, file, console, UNIX Syslog, etc.

C - Both of the above.

D - None of the above.

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

A - public void warn(Object message)

B - public void trace(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 L character used in the conversionPattern of PatternLayout object?

A - Used to output location information of the caller which generated the logging event.

B - Used to output the line number from where the logging request was issued.

C - Used to output the application supplied message associated with the logging event.

D - Used to output the method name where the logging request was issued.

Q 6 - What is the intent of %20.30c format modifier?

A - Left pad with spaces if the category name is shorter than 20 characters. However, if the category name is longer than 30 characters, then truncate from the beginning.

B - Right pad with spaces if the category name is shorter than 20 characters. However, if the category name is longer than 30 characters, then truncate from the beginning.

C - Truncate from the beginning if the category name is longer than 20 characters.

D - None of the above.

Q 7 - Which of the following set the location information for the logging event using HTMLLayout?

A - HTMLLayout.setContentType(String)

B - HTMLLayout.setLocationInfo(String)

C - HTMLLayout.setTitle(String)

D - None of the above.

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 - How will you put the logs in database using log4j??

A - Using JDBCAppender

B - Using RollingFileAppender

C - Using FileAppender

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