log4j Online Quiz

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

A - log4j is a reliable, fast and flexible logging framework (APIs) written in Java, which is distributed under the Apache Software License.

B - log4j has been ported to the C, C++, C#, Perl, Python, Ruby, and Eiffel languages.

C - log4j is highly configurable through external configuration files at runtime.

D - All of the above.

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

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

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

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

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

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 - What is the purpose of C character used in the conversionPattern of PatternLayout object?

A - Used to output the category of the logging event.

B - Used to output the fully qualified class name of the caller issuing the logging request.

C - Used to output the date of the logging event.

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

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 intent of %.20c format modifier?

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

B - Right pad with spaces if the category name is less than 20 characters long.

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 maxBackupIndex 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 URL configuration of JDBCAppender?

A - to set the jdbc URL.

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 - The Level object defines the granularity and priority of any logging information.

A - true

B - false