Cisco Software Developer Trainee Interview Questions and Answers

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.
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Q2. Find missing number from nth number array.
Ans. 
Find missing number from nth number array.
• Iterate through the array and calculate the sum of all numbers

• Calculate the sum of numbers from 1 to n using the formula n*(n+1)/2

• Subtract the sum of array from the sum of numbers from 1 to n to find the missing number
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Q3. Explain inheritance and it types
Ans. 
Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows a class to reuse code from another class.

• Types of inheritance include single inheritance, where a class inherits from only one parent class, and multiple inheritance, where a class inherits from multiple parent classes.

• Example: Class B inherits from Class A, so Class B can access
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Q4. Find 2nd max elements from aaray
Ans. 
Find 2nd max element from array of strings
• Sort the array in descending order

• Skip the first element (max element)

• Return the second element
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Psuedo code based test

Q1. Coding question in any language of choice
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Q1. Multiple questions based on networking, OS, DSA, ML, puzzles and one coding question as well
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Q1. Interview with manager - combination of technical and behavioral
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Q1. Interview with Director - Technical theory questions based on networking
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Q1. No specific questions
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Q1. A lot of questions about OS
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Q1. Questions related to cache memory
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Q1. C++ standard questions
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There were 2 coding questions and 20 aptitude questions. Coding questiins were based in trees and graphs

Q1. Mainly dsa, oops questions were asked
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Q2. Find cycle in linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect cycle in a linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at any point, there is a cycle in the linked list.

• If fast pointer reaches the end of the list, there is no cycle.
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Q1. Work experience over last company
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Q2. Conflict resolution in teams
Ans. 
Conflict resolution in teams involves effective communication, active listening, compromise, and collaboration.
• Encourage open communication to address issues early on

• Practice active listening to understand all perspectives

• Seek compromise and find common ground

• Encourage collaboration to work towards a solution together
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1 hr, oops, C++ questions and C

Q1. Transformer is a static device and transfer power one from to another form current
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Q2. Current transformer is a series conection and step up to high voltage
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Q3. There are three function of smart grid electrical protection isolation and control
Ans. 
The three functions of smart grid electrical protection isolation and control are fault detection, fault isolation, and service restoration.
• Fault detection involves identifying any issues in the electrical system.

• Fault isolation involves isolating the faulty component to prevent further damage.

• Service restoration involves restoring power to the affected area as quickly as possible.

• Examples of smart grid technologies th...read more
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Q4. Current is a flow in wire
Ans. 
Yes, current is the flow of electric charge in a wire.
• Current is measured in amperes (A).

• It is caused by the movement of electrons in a conductor.

• The direction of current flow is from positive to negative.

• Current can be either direct current (DC) or alternating current (AC).
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Q5. Faraday law is a electro magnetic field induction working
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Q6. Ohm's law is current between directly proportional voltage
Ans. 
Ohm's law states that current is directly proportional to voltage.
• Current increases as voltage increases

• Resistance remains constant

• Can be expressed as I = V/R
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SQP, PRS, SRT, TUV, is right answer VXW

Q1. Ispalindrome code in c#
Ans. 
A palindrome code in C# checks if a given string reads the same forwards and backwards.
• Create a function that takes a string as input

• Use a loop to compare characters from the start and end of the string

• Return true if all characters match, false otherwise
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