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 log4j objects are responsible for capturing logging information?

A - loggers

B - appenders

C - layouts

D - None of the above.

Q 3 - Which of the following log4j objects are responsible for publishing logging information to various preferred destinations?

A - loggers

B - appenders

C - layouts

D - None of the above.

Q 4 - 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 5 - Which of the following is correct about log4j?

A - It is thread-safe.

B - It is optimized for speed.

C - It is based on a named logger hierarchy.

D - All of the above.

Q 6 - Which of the following is correct about log4j?

A - It supports multiple output appenders per logger.

B - It is optimized for speed.

C - It is based on a named logger hierarchy.

D - All of the above.

Q 7 - Which of the following is correct about log4j?

A - It supports internationalization.

B - It is not restricted to a predefined set of facilities.

C - Logging behavior can be set at runtime using a configuration file.

D - All of the above.

Q 8 - 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 9 - Which of the following is correct about log4j?

A - The target of the log output as well as the writing strategy can be altered by implementations of the Appender interface.

B - It is fail-stop.

C - log4j does not guarantee that each log statement will be delivered to its destination.

D - All of the above.

Q 10 - 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 11 - 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 12 - 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 13 - Which of the following is correct about Level object?

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

B - There are seven levels of logging defined within the API: OFF, DEBUG, INFO, ERROR, WARN, FATAL, and ALL.

C - Both of the above.

D - None of the above.

Q 14 - Which of the following is correct about Filter object?

A - The Filter object is used to analyze logging information and make further decisions on whether that information should be logged or not.

B - An Appender objects can have several Filter objects associated with them.

C - Both of the above.

D - None of the above.

Q 15 - Which of the following is correct about ObjectRenderer object?

A - The ObjectRenderer object is specialized in providing a String representation of different objects passed to the logging framework.

B - This object is used by Layout objects to prepare the final logging information.

C - Both of the above.

D - None of the above.

Q 16 - Which of the following is correct about LogManager object?

A - The LogManager object manages the logging framework.

B - It is responsible for reading the initial configuration parameters from a system-wide configuration file or a configuration class.

C - Both of the above.

D - None of the above.

Q 17 - Which of the following is correct about log4j.properties?

A - The log4j.properties file is a log4j configuration file which keeps properties in key-value pairs.

B - By default, the LogManager looks for a file named log4j.properties in the CLASSPATH.

C - Both of the above.

D - None of the above.

Q 18 - 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 19 - 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 20 - 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 21 - Which of the following is correct about threshold in Appender?

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

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

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

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

Q 22 - 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 23 - Which of the following method of logger print a log message in debug 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 24 - Which of the following method of logger print a log message in error 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 25 - Which of the following method of logger print a log message in fatal 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)