Lists are mutable in Python.

• Lists can be modified after creation, allowing for addition, removal, and modification of elements.

• Tuples, strings, integers, and floats are immutable in Python.

• Example: list_example = [1, 2, 3]; list_example[1] = 5 # modifies the list element at index 1 to 5.

Program to print decreasing number of asterisks in each line

• Create a loop to iterate from n to 1

• In each iteration, print the corresponding number of asterisks

• Use a nested loop to print the asterisks in each line

There are three types of Spark clusters: standalone, YARN, and Mesos. Each type has different use cases.

• Standalone cluster: Suitable for development and testing purposes.

• YARN cluster: Ideal for running Spark on Hadoop clusters.

• Mesos cluster: Used for running Spark on Mesos clusters or in cloud environments.

• Standalone cluster can be set up on a single machine or a group of machines.

• YARN cluster leverages Hadoop's resource management capabilities.

• Mesos cluster provides fine-gra...read more

Optimization techniques are methods used to improve efficiency and performance of systems or processes.

• Mathematical optimization: using mathematical models and algorithms to find the best solution

• Heuristic optimization: using trial and error or rule-based methods to find good solutions

• Metaheuristic optimization: using higher-level strategies to explore the search space efficiently

• Constraint optimization: optimizing solutions subject to constraints

• Parallel optimization: distri...read more

out and ref are used for passing arguments by reference, while partial classes allow splitting a class definition into multiple files.

• out keyword is used for passing arguments by reference and does not require the variable to be initialized before passing.

• ref keyword is used for passing arguments by reference and requires the variable to be initialized before passing.

• Partial classes allow splitting a class definition into multiple files, making it easier to manage large class...read more

CSS properties control the visual presentation of elements on a webpage.

• color: sets the color of text

• font-size: determines the size of text

• background-color: specifies the background color of an element

• border: defines the border around an element

• margin: sets the margin outside an element

• padding: determines the padding inside an element

• text-align: aligns text within an element

• display: specifies how an element is displayed

• width: sets the width of an element

• height: determines the...read more

The code will print 'o wo', which is the substring of 'Hello world' starting from index 4 up to index 7.

• The slicing operation str[4:8] extracts characters from index 4 to index 7 (exclusive) from the string 'Hello world'.

• The index 4 corresponds to the character 'o' and index 7 corresponds to the character 'd'.

• Therefore, the output of print(str[4:8]) will be 'o wo'.

List of 10 common HTML tags used in web development

• 1.

  : Defines a division or section in an HTML document

• 2.

  : Defines a paragraph

• 3. : Defines a hyperlink

• 4. : Defines an image

• 5.

  : Defines an unordered list

  • 6.

  • : Defines a list item

  • 7.

    : Defines a heading

  • 8.

    : Defines a table

  • 9.

    : Defines an HTML form for user input

  • 10. : Defines an input control

Web application performance can be handled by optimizing code, caching, load balancing, and monitoring.

• Optimize code by reducing database queries, using efficient algorithms, and minimizing HTTP requests.

• Implement caching to reduce server load and improve response time.

• Use load balancing to distribute traffic across multiple servers.

• Monitor performance using tools like New Relic or Google Analytics to identify bottlenecks and optimize accordingly.

Interceptors in Angular are used to intercept HTTP requests and responses.

• Interceptors can be used to modify requests before they are sent and responses before they are received.

• They can be used for tasks like adding headers, logging, error handling, etc.

• Example: Creating an interceptor to add a token to every outgoing request for authentication.

I am a dedicated and detail-oriented Manual Test Engineer with 5 years of experience in testing web and mobile applications.

• 5 years of experience in manual testing

• Proficient in testing web and mobile applications

• Detail-oriented and dedicated to ensuring quality

• Strong problem-solving skills

• Experience with test case creation and execution

Web application flow involves client-server communication, request processing, and response generation.

• Client sends a request to the server

• Server processes the request and generates a response

• Response is sent back to the client

• Client renders the response in the browser

• This flow continues until the user interacts with the application