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 layout object in Appender?

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

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

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

D - Appender can have a Layout objects 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 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 - Which of the following is correct about org.apache.log4j.HTMLLayout class?

A - If you want to generate your logging information in an HTML-formatted file, then you can use org.apache.log4j.HTMLLayout to format your logging information.

B - The HTMLLayout class extends the abstract org.apache.log4j.Layout class and overrides the format() method from its base class to provide HTML-style formatting.

C - Both of the above.

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

A - true

B - false