- log4j - Home
- log4j - Overview
- log4j - Installation
- log4j - Architecture
- log4j - Configuration
- log4j - Sample Program
- log4j - Logging Methods
- log4j - Logging Levels
- log4j - ConsoleAppender
- log4j - Logging in Database
Log4j - Formatting Layouts
- log4j - Log Formatting
- log4j - CSV Parameter Layout
- log4j - CSV Log Event Layout
- log4j - HTML Layout
- log4j - Pattern Layout
- log4j - Json Template Layout
Log4j - File Appenders
- log4j - Logging in Files
- log4j - FileAppender
- log4j - Separate Folder per Month
- log4j - Daily log File Generation
log4j Resources
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 LogManager object?
Answer : C
Explanation
Both of the above options are correct.
Q 3 - Which of the following is correct about filter in Appender?
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.
Answer : A
Explanation
filter − The Filter objects can analyze logging information beyond level matching and decide whether logging requests should be handled by a particular Appender or ignored.
Q 4 - Which of the following level designates informational messages that highlight the progress of the application at coarse-grained level?
Answer : D
Explanation
INFO − Designates informational messages that highlight the progress of the application at coarse-grained level.
Q 5 - What is the purpose of t 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 : D
Explanation
t − Used to output the name of the thread that generated the logging event.
Q 6 - What is the purpose of X character used in the conversionPattern of PatternLayout object?
B - Used to print the information stored in the MDC against the key.
D - Used to Left pad with spaces if the category name is less than 20 characters long.
Answer : B
Explanation
X − The X conversion character is followed by the key for the MDC. For example, X{clientIP} will print the information stored in the MDC against the key clientIP.
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 - What is the purpose of maxFileSize configuration of RollingFileAppender?
A - to set the critical size of the file above which the file will be rolled.
Answer : A
Explanation
maxFileSize − This is the critical size of the file above which the file will be rolled.
Q 9 - What is the purpose of sql configuration of JDBCAppender?
A - to set the driver class to the specified string.
B - to set the database password.
C - to specify the SQL statement to be executed every time a logging event occurs.
Answer : C
Explanation
sql − Specifies the SQL statement to be executed every time a logging event occurs. This could be INSERT, UPDATE, or DELETE.
Q 10 - Appender can have a threshold level associated with it independent of the logger level.
Answer : A
Explanation
true − Appender can have a threshold level associated with it independent of the logger level. The Appender ignores any logging messages that have a level lower than the threshold level.