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Q31. What are the 7 OSI LAYERS ?

Ans. Layer 7 - Application
Layer 6 - Presentation
Layer 5 - Session
Layer 4 - Transport
Layer 3 - Network
Layer 2 - Data Link
Layer 1 - Physical

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Q32. What is stereotype annotation ?

Spring

Ans. These annotations are used to create Spring beans automatically in the application context. The main stereotype annotation is @Component . @Controller: Which is used to create Spring beans at the controller layer. The stereotype annotations in spring are @Component, @Service, @Repository and @Controller

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Q33. what is dispatcher servlet@componentScan use ?

Spring Framework

Ans. @ComponentScan in a Spring Application.

With Spring, we use the @ComponentScan annotation along with the @Configuration annotation to specify the packages that we want to be scanned. @ComponentScan without arguments tells Spring to scan the current package and all of its sub-packages.

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Q34. Is there a way to access a private method from an outside class ?

Core Java

Ans. Through Reflection.

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Q35. Explain unix commands - cat and pwd.

Unix

Ans. by using Cat command we can open and see the file content and as well as redirect the file content to another files

pwd command shows us current working path of the server

cat filename | tail -100

cat file name > filname1

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Q36. Explain life cycle of Spring Application ?

Spring

Ans. Instantiation by using:
InitializingBean callback interface.
Custom init() method from the bean configuration file.
Aware interfaces for distinct actions.
PostConstruct and PreDestroy annotations.
Destruction.
DisposableBean callback interface

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