Interview Questions Answers in C, Search Engine Optimization SEO, Core Java

What steps can we take to reduce the bounce rate?

Answer

Make sure your meta title is appropriate for the content. Make the content easier to read.
Improve the user interface of the website

Steer clear of too many advertisements.
Include media and photos on the page and work to make the website faster.
Make strategic use of internal linking
Verify that there are no technical issues.

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Question { 608 }

What is the difference between dwell time and bounce rate?

Answer

The difference between dwell time and bounce rate is marginal.

Users visit a page from the SERP and then return to the SERP during dwell time.

On the other hand, visitors that bounce may have come from direct links, social media, search engine results pages, or any other source. Furthermore, it is not a given that they will return to the search results page, even if they did come from it.

Even if users switch tabs, enter a different URL, or visit another website, the bounce rate is taken into account.

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Question { 562 }

What is the maximum number of links a sitemap can have?

Answer

There can be no more than 50,000 links in a sitemap. More than that, Google won't crawl.

It will be necessary to establish numerous sitemaps if a website contains more than 50,000 URLs.

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Question { 639 }

What is the maximum file size a sitemap can have?

Answer

A sitemap's maximum file size is 50 MB. The recommended course of action for sitemaps larger than 50 MB is to split them up into several smaller files.

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Question { 737 }

. Define Copy Constructor in Java

Answer

A Copy Constructor in Java is a constructor that initializes an object through another object of the same class.

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Question { 719 }

Can Java be said to be the complete object-oriented programming language

Answer

No, Java cannot be treated as a complete object-oriented programming language.

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Question { 674 }

Define Wrapper Classes in Java.

Answer

In Java, when you declare primitive datatypes, then Wrapper classes are responsible for converting them into objects(Reference types).

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Question { 697 }

Define package in Java.

Answer

The package is a collective bundle of classes and interfaces and the necessary libraries and JAR files. The use of packages helps in code reusability

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Question { 776 }

. Differentiate between instance and local variables.

Answer

For instance, variables are declared inside a class, and the limited to only a specific object.
A local variable can be anywhere inside a method or a specific block of code. Also, the scope is limited to the code segment where the variable is declared.

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Question { 718 }

. Explain Java String Pool.

Answer

A collection of strings in Java's Heap memory is referred to as Java String Pool. In case you try to create a new string object, JVM first checks for the presence of the object in the pool. If available, the same object reference is shared with the variable, else a new object is created.

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Question { 716 }

What happens when the main() isn't declared as static?

Answer

When the main method is not declared as static, then the program may be compiled correctly but ends up with a severe ambiguity and throws a run time error that reads

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Question { 804 }

Why is Java a platform independent language?

Answer

One of the most well-known and widely used programming languages is Java. It is a programming language that is independent of platforms. Java doesn't demand that the complete programme be rewritten for every possible platform. The Java Virtual Machine and Java Bytecode are used to support platform independence. Any JVM operating system can run this platform-neutral byte code. The application is run after JVM translates the byte code into machine code. Because Java programmes can operate on numerous systems without having to be individually rewritten for each platform, the language is referred to as "Write Once, Run Anywhere" (WORA).

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Question { 796 }

Why is the main method static in Java?

Answer

Java's main() function is static by default, allowing the compiler to call it either before or after creating a class object. The main () function is where the compiler begins programme execution in every Java programme. Thus, the main () method needs to be called by the compiler. If the main () method is permitted to be non-static, the JVM must instantiate its class when calling the function.

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Question { 717 }

What part of memory - Stack or Heap - is cleaned in the garbage collection process?

Answer

On Heap memory, garbage collection is employed to release the memory used by objects with no references. Every object created in the Heap space has access to the entire application and may be referred to from anywhere.

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Question { 815 }

What is the difference between the program and the process?

Answer

A programme is a non-active entity that includes the collection of codes necessary to carry out a specific operation. When a programme is run, an active instance of the programme called a process is launched. A process is begun by a programme once it has been run. The process carries out the program's specified instructions.

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