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 target in Appender?

A - Appender uses the target and the conversion pattern associated with them to format the logging information.

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

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

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

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

A - true

B - false