Amdocs SDE Interview Questions and Answers

60 minutes of coding round with medium level of question asked

Coding and Aptitude MCQ questions

Q1. How i can design a login system for client?
Ans. 
Designing a login system for clients involves creating secure authentication methods and user management.
• Implement secure password hashing algorithms like bcrypt to store passwords securely.

• Use HTTPS to encrypt data transmission between client and server.

• Implement multi-factor authentication for added security.

• Utilize session management to keep track of user login status.

• Consider implementing account lockout mechanisms
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Q2. What is foreign key and how you can you can use foreign key in your DBMS system?
Ans. 
Foreign key is a key used to link two tables in a database, enforcing referential integrity.
• Foreign key is a column or a set of columns in one table that references the primary key in another table.

• It ensures that the values in the foreign key column(s) match the values in the primary key column of the referenced table.

• Foreign key constraints help maintain data integrity by preventing actions that would destroy links b...read more
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Aptitude and technical questions

2 coding questions with choice of language

Q1. Technical questions
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Q2. Programming questions
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Basic Aptitude test, it was easy

Questions on array medium level

Q1. Array questions
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Q1. Tell me about yourself
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills

• Team player with excellent communication skills
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Q2. Where do you see yourself
Ans. 
I see myself continuing to grow and develop my skills in a challenging and rewarding role.
• Continuing to learn new technologies and stay updated with industry trends

• Taking on more responsibilities and leadership roles

• Contributing to the success and growth of the company

• Striving for personal and professional growth
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General questions like reasoning and maths

General DSA questions were asked like Linked list etc

Q1. What is the shortest distance between two farthest vertices in a cubical room
Ans. 
The shortest distance between two farthest vertices in a cubical room is the length of the diagonal of the cube.
• The diagonal of a cube can be calculated using the formula: sqrt(3) * side length

• In a cube with side length 1 unit, the diagonal length is sqrt(3) units

• Therefore, the shortest distance between two farthest vertices in a cubical room is sqrt(3) times the side length of the cube
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Q2. A root 5 is the ans
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Basic dp and graph questions

Q1. Left leaf nodes sum in a binary tree
Ans. 
Calculate the sum of all left leaf nodes in a binary tree.
• Traverse the binary tree using depth-first search (DFS)

• Check if a node is a leaf node and if it is a left child

• Add the value of the left leaf node to the sum

• Recursively traverse the left and right subtrees
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Q2. About my past projects
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Q1. Discussion about myself and my projects
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