log4j Online Quiz

Q 1 - Which of the following is correct about Logger object?

A - The top-level layer of log4j architecture is the Logger which provides the Logger object.

B - The Logger object is responsible for capturing logging information and they are stored in a namespace hierarchy.

C - Both of the above.

D - None of the above.

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

A - The layout layer of log4j architecture provides objects which are used to format logging information in different styles.

B - It provides support to appender objects before publishing logging information.

C - Layout objects play an important role in publishing logging information in a way that is human-readable and reusable.

D - All of the above.

Q 3 - Which of the following level designates fine-grained informational events that are most useful to debug an application?

A - DEBUG

B - ERROR

C - FATAL

D - INFO

Q 4 - Which of the following is true about log4j levels?

A - A log request of level p in a logger with level q is enabled if p >= q.

B - A log request assumes that levels are ordered.

C - For the standard levels, we have ALL < DEBUG < INFO < WARN < ERROR < FATAL < OFF.

D - All of the above.

Q 5 - What is the purpose of r 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 - 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 - 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 password configuration of JDBCAppender?

A - to set the driver class to the specified string.

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 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