Cisco Cloud Engineer 1 Interview Questions and Answers

Round duration - 40 minutes
Round difficulty - Easy

Technical round with questions based on DSA.

Q1. 
Reverse a Number Problem Statement
Create a program to reverse a given integer N. The output should be the reversed integer.
Note:
If a number has trailing zeros, their reversed version should not inclu...read more
Ans. 
Reverse a given integer while excluding trailing zeros.
• Create a program to reverse the given integer by converting it to a string and then reversing it.

• Remove any trailing zeros from the reversed string before converting it back to an integer.

• Handle the constraints of the input integer being between 0 and 10^8.

• Example: For input 1230, the output should be 321.
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Q2. 
Reverse a Linked List Problem Statement
You are given a Singly Linked List of integers. Your task is to reverse the Linked List by changing the links between nodes.
Input:
The first line of input contai...read more
Ans. 
Reverse a given singly linked list by changing the links between nodes.
• Iterate through the linked list and reverse the links between nodes.

• Use three pointers to keep track of the current, previous, and next nodes.

• Update the links while traversing the list to reverse it.

• Return the head of the reversed linked list.
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Q3. What is the difference in C++ between 'new int[5]' and 'malloc(5 * sizeof(int))'?
Ans. 
new int[5] is C++ specific and initializes the array with default values, while malloc(5 * sizeof(int)) is a C function and does not initialize the array.
• new int[5] is C++ specific and calls constructors for each element in the array.

• malloc(5 * sizeof(int)) is a C function and does not call constructors, leaving the array uninitialized.

• new int[5] returns a pointer to the first element of the array, while malloc(5 * siz...read more
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Coding test realted to c or cpp will be taken.

Q1. Technical question realted to 4G and 5G NR will be asked.
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Q1. Technical 2 round questions realted to programming language you need to write and explain.
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Q1. About youself and then salary discussion
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Q1. Tell me about yourself.
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Q1. DSA - One problem on shopping cart
Ans. 
Implement a shopping cart system using data structures and algorithms.
• Use a data structure like a hash map to store items and their quantities in the cart.

• Implement functions to add, remove, and update items in the cart.

• Consider implementing functions to calculate total price, apply discounts, and handle checkout process.
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Normal dsa Basics and aptitude.

Q1. Give the elements of an array that sum up to given number.
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Q2. Binary search using recursion.
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Q1. Why should we hire you?
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Q2. Why are you interested to join juniper?
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Q1. Create your own hashmap
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Q1. Subarray Sum divisible by K
Ans. 
Find the number of subarrays whose sum is divisible by K.
• Use prefix sum technique to calculate the sum of subarrays efficiently.

• Keep track of the remainders of prefix sums when divided by K.

• Use a hashmap to store the count of each remainder.

• For each prefix sum, check how many previous prefix sums have the same remainder.

• Add the count of subarrays with the same remainder to the total count.
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Q1. Interests and open to work from Bangalore
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