10+ Christ ITES Tech Interview Questions and Answers

Bubble sort is a simple sorting algorithm. ACID properties are used to ensure database transactions are reliable.

• Bubble sort repeatedly swaps adjacent elements if they are in the wrong order.

• ACID stands for Atomicity, Consistency, Isolation, and Durability.

• Atomicity ensures that a transaction is treated as a single, indivisible unit.

• Consistency ensures that a transaction brings the database from one valid state to another.

• Isolation ensures that concurrent transactions do not ...read more

Method overloading involves multiple methods in the same class with the same name but different parameters. Method overriding involves a subclass providing a specific implementation of a method that is already provided by its superclass.

• Method overloading is achieved within the same class by having multiple methods with the same name but different parameters.

• Method overriding occurs in a subclass that provides a specific implementation of a method that is already provided by ...read more

The question is a puzzle involving arrays and strings.

• Create an array of strings

• Manipulate the strings in the array to solve the puzzle

• Use loops or built-in array methods to iterate through the array

Transfer learning is a machine learning technique where a model trained on one task is re-purposed on a second related task.

• Transfer learning involves using pre-trained models as a starting point for a new task.

• It helps in saving time and computational resources by leveraging knowledge from previous tasks.

• Fine-tuning and feature extraction are common transfer learning approaches.

• Example: Using a pre-trained image classification model for a new image recognition task.

Types of machine learning include supervised, unsupervised, and reinforcement learning, each with unique use cases.

• Supervised learning: Uses labeled data to train a model to make predictions. Example: spam email detection.

• Unsupervised learning: Finds patterns in unlabeled data. Example: customer segmentation.

• Reinforcement learning: Learns through trial and error to maximize rewards. Example: game playing AI.

SQL joining query between two tables

• Use JOIN keyword to combine rows from two or more tables based on a related column between them

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column

The frequent tool used for Incident tracking is ServiceNow

• ServiceNow is a popular incident tracking tool used in IT industry

• It helps in logging, tracking, and resolving incidents efficiently

• Other common tools include Jira, Zendesk, and Freshservice

Customer critical applications in Web tier require proactive monitoring, quick response to issues, and effective communication with stakeholders.

• Implement proactive monitoring tools to detect issues before they impact customers

• Establish clear escalation procedures to quickly address critical issues

• Regularly communicate with customers to provide updates on issue resolution progress

• Have a backup plan in place to ensure continuity of service in case of failures

• Document all proce...read more

Locators used in Selenium are used to identify web elements on a web page.

• Selenium supports various locators such as ID, Name, Class Name, Tag Name, Link Text, Partial Link Text, CSS Selector, and XPath.

• ID and Name locators are the most commonly used locators in Selenium.

• CSS Selector and XPath locators are more powerful and flexible than other locators.

• Example: driver.findElement(By.id("elementID"));

API methods are functions that allow communication between different software systems.

• GET: retrieves data from a server

• POST: sends data to a server to create a resource

• PUT: updates an existing resource on a server

• DELETE: removes a resource from a server

• PATCH: updates a part of an existing resource on a server