Apache Related Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Related Interview Questions

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Explain why to use Apache Log4j?

what is the best way to migrate from java.util logging to log4j?

what does WARN and TRACE level indicates in log4j?

what are the two static methods for obtaining a logger object?

why do you get multiple copies of the message in log file sometime?

what is package level logging in log4j?

what are the format characters used in log4j?

what is layouts in log4j?

what are the logging methods provided by logger class?

Inside logger component what are the different log levels?

What is Camel?

Is camel an esb?

Does camel link method invocation of bean at compile time or runtime?

What is the content of Exchange in camel?

What jars do I need?

Un-Answered Questions { Apache Related }

List and describe the various building blocks of apache solr.

Explain how you can streamline log files using apache storm?

what does .class mean in log4j context?

Can you explain tokenizer?

What are the dependencies?

Does nifi works as a master-slave architecture?

Can you explain the difference between raw data and processed data?

What is minimum version of java is required to run apache ant 1.9.x?

How storm ui can be used in topology?

Can you define mod_vhost_alias?

What is the purpose of xssfsheet class in apache poi?

What is an uri?

What is the backpressure in nifi system?

What are the different types of query paramaters?

How many scope does camel error handler have?

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