Huawei Technologies Site Reliability Engineer Interview Questions and Answers

Q1. For technical interview, must be very strong on fundamental concept of your domain. 3 round of interview. First round is pure technical round and questions on previous work experience with other technica...read more
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Q2. What is network ,Network topology
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A network is a group of interconnected devices that communicate with each other. Network topology refers to the layout of these devices.
• Network topology can be classified into different types such as bus, star, ring, mesh, and hybrid.

• Bus topology connects all devices to a single cable, while star topology connects all devices to a central hub.

• Ring topology connects devices in a circular loop, while mesh topology connec...read more
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Q1. What is the Collection Framework?
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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 C...read more
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Q2. Write a program to Reverse a String?
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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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Q3. Write a program to find a missing number in Arrays?
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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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Q4. What is explicit Constructor?
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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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Q5. What is abstract class in Java?
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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: a...read more
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Q6. Constructor is declared static or not?
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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 whe
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Q7. What is interface in Java?
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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 pro...read more
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Q1. 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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Q2. What is reletive Xpath?
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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 de...read more
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Q3. 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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Q4. Chrome capabilities of selenium automation
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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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Routing switching , OSPF BGP

Q1. Networking questions
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Q1. I faced questions related to bgp, nexus switch, stacking, how to coordinate with ISP, loop testing with ISP, OSPF, EIGRP ETC
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