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Ans. The Java collections framework (JCF) is a set of classes and interfaces that implement commonly reusable collection data structures. Although referred to as a framework, it works in a manner of a library. The JCF provides both interfaces that define various collections and classes that implement them.
Ans. The clustered index determines how the data is stored in the rows of a table.The non-clustered index stores the data at a single place and the indexes are stored at another place.
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Ans. On demand instance is normal instance means if you create first time so you can use on demand instance, in this instance you can create simple server like 2 gb RAM, 1 core CPU, GP2 30 GB SSD....etc.
and Reserved instance is you can create server and its reserved for 2-3 years and when you give back to this server on AWS they give you discount but on demand and reserved instance price are same.
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Ans. Primary benefits of cloud computing include –
Data backup and storage
Reduced costs of managing and maintaining IT systems
Powerful server capability and scalability
Better productivity and collaboration efficiency
Access to automatic updates
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Ans. A Virtualization is software that virtualizes your hardware into multiple machines while Cloud computing is the combination of multiple hardware devices. In Virtualization, a user gets dedicated hardware while in Cloud computing multiple hardware devices provide one login environment for the user.
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Ans. AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It is a computing service that runs code in response to events and automatically manages the computing resources required by that code. It was introduced in November 2014.
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when you an element to the stack check these two condition
1. Stack is empty, then MAX = element
2. Stack is not empty then check if the element is greater than MAX then MAX = element
when getMax fuction is called, then return MAX
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Q2130. If you are given a Jar file , How can you go through it understand what it does
Ans. It depends on if the jar file has source files or not. If it does have , I can open it in an IDE. If not, I can try looking documentation online if it's a public library or framework. If it's not a public library and no source file available, We can use a decompiler to generate source files from compiled class files.
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