Tata Communications Associate Interview Questions and Answers

Q1. Knowledge of splicing machine and other splicing parameters
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Q2. Practical questions
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Q3. Your qualification
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Q4. Your experience
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Q5. Safety precautions
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Q1. Explain the dwdm architect
Ans. 
DWDM architect stands for Dense Wavelength Division Multiplexing architect, which is a technology used in fiber optic communications.
• DWDM architect is a technology that allows multiple data streams to be transmitted simultaneously over a single fiber optic cable by using different wavelengths of light.

• It increases the capacity of the fiber optic network by allowing more data to be transmitted over longer distances.

• DWDM...read more
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Q2. Explain about the current job and the experience in dwdm
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Q3. What are the modules in ciena 6500
Ans. 
The modules in Ciena 6500 are line modules, switch modules, and control modules.
• Line modules handle the physical interfaces and connections.

• Switch modules manage the switching and routing functions.

• Control modules oversee the overall system operation and management.
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Q4. What is ROADM and its functions
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ROADM stands for Reconfigurable Optical Add-Drop Multiplexer. It is a device used in optical fiber networks to add, drop, or reroute specific wavelengths of light.
• ROADM allows for flexible and dynamic allocation of bandwidth in optical networks.

• It can add or drop specific wavelengths of light without affecting the rest of the network traffic.

• ROADM can be remotely controlled to reconfigure the network as needed.

• Examples...read more
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Q1. Salary expectation negotiation , and shift timing ?
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Q1. How to install operating system?
Ans. 
To install an operating system, you need to boot from the installation media and follow the on-screen instructions.
• Insert the installation media (such as a USB drive or DVD) into the computer

• Restart the computer and boot from the installation media

• Follow the on-screen instructions to select language, partition the disk, and install the OS

• Wait for the installation process to complete and then restart the computer
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Q2. Difference between router & Switch
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Router connects multiple networks while switch connects devices within a network.
• Router operates at the network layer (Layer 3) of the OSI model, while switch operates at the data link layer (Layer 2).

• Router uses IP addresses to route data between different networks, while switch uses MAC addresses to forward data within a network.

• Router can determine the best path for data packets to travel between networks, while swi...read more
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Codings were asked to write in java

It was a combination of coding and aptitude test. The test had four section and each section had it's time limit.

Q1. The interviewer asked me question based on my resume. He also asked me question related to DBMS, OS & DSA.
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Q2. Define polymorphism.
Ans. 
Polymorphism is the ability of an object to take on many forms.
• Polymorphism allows objects of different classes to be treated as if they are of the same class.

• It can be achieved through method overloading or method overriding.

• For example, a parent class Animal can have child classes like Dog, Cat, and Bird, each with their own unique implementation of the method 'makeSound'.
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Q3. Difference between SQL & NoSQL.
Ans. 
SQL is a relational database management system, while NoSQL is a non-relational database management system.
• SQL databases use structured query language for defining and manipulating the data.

• NoSQL databases are schema-less and use various data models like key-value, document, columnar, or graph.

• SQL databases are suitable for complex queries and transactions.

• NoSQL databases are horizontally scalable and provide high perf...read more
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Q1. It was a managerial round.
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Q1. It asked me some situational based questions.
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