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10+ Verizon Site Reliability Engineer Interview Questions and Answers

Updated 5 Feb 2024

Q1. Write a program to find a missing number in Arrays?

Ans.

Program to find a missing number in Arrays

  • Sort the array and iterate to find the missing number

  • Use XOR operation to find the missing number

  • Calculate the sum of all numbers and subtract from the sum of expected numbers to find the missing number

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Q2. What is the Collection Framework?

Ans.

The Collection Framework is a unified architecture for representing and manipulating collections in Java.

  • It provides interfaces like List, Set, Queue, etc. for storing and manipulating collections of objects.

  • It also provides concrete classes like ArrayList, HashSet, PriorityQueue, etc. that implement these interfaces.

  • It supports algorithms like sorting, searching, and shuffling on collections.

  • It is a part of the Java Collections Framework.

  • Example: List names = new ArrayList<>...read more

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Q3. What is abstract class in Java?

Ans.

An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

  • An abstract class can have abstract and non-abstract methods.

  • Abstract methods have no implementation and must be implemented by the subclass.

  • A class can only extend one abstract class but can implement multiple interfaces.

  • Abstract classes are used to provide a common interface for a group of related classes.

  • Example: abstract class Animal { abstract void makeSound(); }

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Q4. Constructor is declared static or not?

Ans.

Constructor can be declared static or non-static depending on the use case.

  • If a constructor is declared static, it means it can be called without creating an instance of the class.

  • Static constructors are used to initialize static fields of the class.

  • Non-static constructors are used to initialize instance fields of the class.

  • If a class has both static and non-static constructors, the non-static constructor is called when an instance of the class is created.

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Q5. What are locators present in Selenium?

Ans.

Locators are used to identify web elements in Selenium.

  • Locators are used to find and interact with web elements on a web page.

  • There are several types of locators in Selenium, including ID, name, class name, tag name, link text, and partial link text.

  • For example, to find an element with the ID 'username', you would use the ID locator: driver.findElement(By.id('username'));

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Q6. Write a program to Reverse a String?

Ans.

Program to reverse a string

  • Use a loop to iterate through the string and append each character to a new string in reverse order

  • Alternatively, use built-in string reversal functions in some programming languages

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Q7. To find a one element Xpath in Amazon.com

Ans.

To find a one element Xpath in Amazon.com

  • Inspect the element in the browser

  • Right-click on the element and select 'Copy XPath'

  • Use the copied XPath in your code

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Q8. What is explicit Constructor?

Ans.

An explicit constructor is a constructor that is defined with the 'explicit' keyword.

  • It is used to prevent implicit conversions from the constructor's parameter type to the class type.

  • It requires the constructor to be called explicitly with the class name and constructor arguments.

  • It is commonly used to avoid unexpected type conversions and improve code clarity.

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Q9. What is interface in Java?

Ans.

An interface in Java is a collection of abstract methods and constants that can be implemented by a class.

  • An interface is declared using the interface keyword.

  • It can be implemented by any class using the implements keyword.

  • All methods in an interface are implicitly public and abstract.

  • Interfaces can also contain constants, which are implicitly public, static, and final.

  • Interfaces are used to achieve abstraction and provide a way for unrelated classes to communicate with each ...read more

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Q10. What is reletive Xpath?

Ans.

Relative XPath is a way to locate elements in XML or HTML documents based on their position relative to other elements.

  • Relative XPath uses the relationships between elements to navigate the document structure.

  • It is more flexible than absolute XPath as it adapts to changes in the document's structure.

  • Relative XPath expressions start with a reference to an element and then use various axes and predicates to locate the desired element.

  • Example: //div[@class='container']/a[2] sele...read more

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Q11. Chrome capabilities of selenium automation

Ans.

Selenium automation can control Chrome browser capabilities such as handling pop-ups, cookies, and browser settings.

  • Selenium can handle pop-ups and alerts using the switchTo() method

  • Cookies can be managed using the addCookie() and deleteCookie() methods

  • Browser settings can be modified using the ChromeOptions class

  • Examples: disabling images, setting the browser window size, and using headless mode

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