log4j Online Quiz

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Following quiz provides Multiple Choice Questions (MCQs) related to log4j Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

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.

Answer : C

Explanation

Both of the above options are correct.

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.

Answer : C

Explanation

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

Q 3 - 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)

Answer : A

Explanation

public void debug(Object message) of Logger class prints messages with the level Level.DEBUG.

Q 4 - Which of the following level designates potentially harmful situations?

Answer : C

Explanation

WARN − Designates potentially harmful situations.

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.

Answer : D

Explanation

M − 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 - It provides the time elapsed from the start of the application before a particular logging event was generated.

B - It provides the name of the thread that invoked the logging request.

C - It provides the level associated with this logging request.

D - All of the above.

Answer : D

Explanation

All of the above options are correct.

Q 7 - What is the purpose of threshold 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.

Answer : C

Explanation

threshold − The threshold level for this appender.

Q 8 - Which of the following DatePattern configuration of DailyRollingFileAppender rolls over the logs at midnight each day?

A - '.' yyyy-MM

B - '.' yyyy-MM-dd

C - '.' yyyy-MM-dd-a

D - '.' yyyy-MM-dd-HH

Answer : B

Explanation

'.' yyyy-MM-dd − Roll over at midnight each day. This is the default value.

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.

Answer : B

Explanation

user − Sets the database user name.

Q 10 - The LogManager object manages the logging framework.

Answer : A

Explanation

true − The LogManager object manages the logging framework. It is responsible for reading the initial configuration parameters from a system-wide configuration file or a configuration class.

log4j_questions_answers.htm

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