Telstra Interview Questions, Process, and Tips

DSA and aptitude questions

Q1. Write the code for a doubly linked list?
Ans. 
Doubly linked list code implementation
• Create a Node class with data, prev, and next pointers

• Implement methods for insertion, deletion, and traversal

• Handle edge cases like empty list, inserting at head/tail, etc.
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Q2. Explain your project in detail
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database storage

• Incorporated user authentication and authorization features
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Q1. Tell me something about yourself which is not in your resume?
Ans. 
I am an avid hiker and have climbed several mountains in the past year.
• I enjoy spending time outdoors and challenging myself physically

• I have completed hikes to the summits of Mount Rainier, Mount Whitney, and Half Dome

• Hiking helps me clear my mind and stay physically fit
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Q2. How do you manage your personal and professional life?
Ans. 
I prioritize tasks, set boundaries, delegate when necessary, and make time for self-care.
• Prioritize tasks based on urgency and importance

• Set boundaries between work and personal life to maintain a healthy balance

• Delegate tasks when overwhelmed to avoid burnout

• Make time for self-care activities such as exercise, hobbies, and relaxation

• Use tools like calendars and to-do lists to stay organized
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Q1. Some puzzle from gfg which I don't remember now
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Q2. If you have 2-3 tasks in the plate how do you decide the priority?
Ans. 
I prioritize tasks based on deadlines, importance, and dependencies.
• Evaluate deadlines and prioritize tasks with the closest deadline first

• Consider the importance and impact of each task on the overall project

• Take into account any dependencies between tasks and prioritize accordingly

• Communicate with stakeholders to understand their priorities and align tasks accordingly
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Leetcode easy and medium questions. It was easy to clear

Q1. Dry run bubble and insertion sort
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Q2. One SQL query easy level
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Q1. Discussion about projects
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Q2. Do you have any questions
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Python and SQL Questions (Easy to Medium)

Q1. Project Work Discussion
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Q2. SQL Coding (Can be with an online compiler)
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Q3. Python Coding (Can be with an online compiler)
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Q4. PySpark Coding (All the coding answers have to be submitted to the interviewer)
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Q5. PySpark Joins, and Databricks, and Vanilla Spark difference
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Q1. SQL 2 Questions (Easy to Medium) (Maybe on the compiler)
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Q2. Python (Easy) (Maybe on compiler)
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Q3. Scenario-based questions on the project
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Easy-medium level and it included two coding questions and some technical questions

Q1. How are structures and classes stored?
Ans. 
Structures and classes are stored in memory as a combination of data members and member functions.
• Structures and classes are stored in memory as a combination of data members and member functions.

• Data members of a structure or class are stored in contiguous memory locations.

• Member functions of a class are stored separately in memory and are shared among all instances of the class.

• Pointers to member functions are used t...read more
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Q2. What is final and finalize?
Ans. 
final is a keyword in Java used to restrict inheritance, overriding, and modification. finalize is a method used for cleanup operations before an object is garbage collected.
• final keyword is used to declare constants, prevent inheritance by marking a class as final, and prevent method overriding by marking a method as final

• finalize method is called by the garbage collector before an object is destroyed

• Example: final in...read more
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