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?
B - It is optimized for speed.
Answer : D
Explanation
All of the above options are correct.
Q 2 - Which of the following is correct about level in Appender?
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 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 very severe error events that will presumably lead the application to abort?
Answer : C
Explanation
FATAL − Designates very severe error events that will presumably lead the application to abort.
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 - 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.
Answer : B
Explanation
%-20c − Right pad with spaces if the category name is less than 20 characters long.
Q 7 - What is the purpose of encoding configuration of FileAppender?
A - output stream to the file being flushed with each append operation.
B - to set the platform-specific encoding scheme.
Answer : B
Explanation
encoding − It is possible to use any character-encoding. By default, it is the platform-specific encoding scheme.
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 - The top-level layer of log4j architecture is the Logger which provides the Logger object.
Answer : A
Explanation
true − The top-level layer of log4j architecture is the Logger which provides the Logger object. The Logger object is responsible for capturing logging information and they are stored in a namespace hierarchy.
Q 10 - The target may be a console, a file, or another item depending on the appender.
Answer : A
Explanation
true − The target may be a console, a file, or another item depending on the appender.
