log4j Online Quiz
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.
Q 1 - Which of the following is correct about log4j?
C - log4j does not guarantee that each log statement will be delivered to its destination.
Answer : D
Explanation
All of the above options are correct.
Q 2 - Which of the following is correct about target in Appender?
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.
Answer : B
Explanation
target − The target may be a console, a file, or another item depending on the appender.
Q 3 - 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)
Answer : B
Explanation
public void error(Object message) of Logger class prints messages with the level Level.ERROR.
Q 4 - Which of the following level designates finer-grained informational events than the DEBUG?
Answer : B
Explanation
TRACE − Designates finer-grained informational events than the DEBUG.
Q 5 - What is the purpose of p 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.
D - Used to output the name of the thread that generated the logging event.
Answer : B
Explanation
p − Used to output the priority of the logging event.
Q 6 - What is the intent of %20.30c format modifier?
C - Truncate from the beginning if the category name is longer than 20 characters.
Answer : A
Explanation
%20.30c − Left pad with spaces if the category name is shorter than 20 characters. However, if the category name is longer than 30 characters, then truncate from the beginning.
Q 7 - What is the purpose of immediateFlush configuration of FileAppender?
A - output stream to the file being flushed with each append operation.
B - to set the platform-specific encoding scheme.
Answer : A
Explanation
immediateFlush − This flag is by default set to true, which means the output stream to the file being flushed with each append operation.
Q 8 - Which of the following DatePattern configuration of DailyRollingFileAppender rolls over the logs at midnight each day?
Answer : B
Explanation
'.' yyyy-MM-dd − Roll over at midnight each day. This is the default value.
Q 9 - What is the purpose of URL configuration of JDBCAppender?
B - to set the database password.
C - to specify the SQL statement to be executed every time a logging event occurs.
Answer : A
Explanation
URL − Sets the JDBC URL.
Q 10 - The Filter objects can analyze logging information beyond level matching and decide whether logging requests should be handled by a particular Appender or ignored.
Answer : A
Explanation
true − The Filter objects can analyze logging information beyond level matching and decide whether logging requests should be handled by a particular Appender or ignored.
