log4j Online Quiz

Advertisements

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 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.

Answer : D

Explanation

All of the above options are correct.

Q 2 - 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.

Answer : C

Explanation

Both of the above options are correct.

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 all levels including custom levels?

Answer : D

Explanation

ALL − All levels including custom levels.

Q 5 - What is the purpose of d 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.

Answer : C

Explanation

d − Used to output the date of the logging event. For example, %d{HH:mm:ss,SSS} or %d{dd MMM yyyy HH:mm:ss,SSS}.

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.

Answer : C

Explanation

%.20c − Truncate from the beginning if the category name is longer than 20 characters.

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.

Answer : B

Explanation

HTMLLayout.setLocationInfo(String) − Sets the location information for the logging event. Default is false.

Q 8 - What is the purpose of DatePattern configuration of DailyRollingFileAppender?

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 - to set when to roll over the file.

D - None of the above.

Answer : C

Explanation

DatePattern − This indicates when to roll over the file and the naming convention to be followed. By default, roll over is performed at midnight each day.

Q 9 - How will you put the logs in database using log4j??

A - Using JDBCAppender

B - Using RollingFileAppender

C - Using FileAppender

D - None of the above.

Answer : A

Explanation

The log4j API provides the org.apache.log4j.jdbc.JDBCAppender object, which can put logging information in a specified database.

Q 10 - The Logger object is responsible for publishing logging information to various preferred destinations such as a database, file, console, UNIX Syslog, etc.

Answer : B

Explanation

false − The Appender object is responsible for publishing logging information to various preferred destinations such as a database, file, console, UNIX Syslog, etc.

log4j_questions_answers.htm

Previous Page Print Page

Advertisements