Cisco Interview Questions

Note: ensure you read the disclaimer on the previous page reading the accuracy and sourcing of these problems.

Find Duplicate Words

A very common interview challenge is to determine how often words appear in a given string or set of strings. Here's a version of this: return a list of duplicate words in a sentence. For example, given 'The dog is the best' , returns "the" . Likewise, given 'Happy thanksgiving, I am s...

Difficulty: 4/10

Most Strongly Connected

You're given the following multi dimensional array matrix: js const matrix 1, 1, 0, 0, 0 , 0, 1, 1, 0, 0 , 0, 1, 0, 1, 0 , 1, 0, 0, 0, 0 Could you find the largest concentration of connected 1 s in the matrix? Write MostConnectedOnes matrix: array class o...

Difficulty: 8/10

Find the Intersection of Two Linked Lists

Assume you have a Linked List implementation that has the following API: js prepend to start of list prepend val appends to end of list append val get an array of node values for testing toArray Can you write a method getIntersection list1, list2 to find the interse...

Difficulty: 4/10

Validate a BST

Given a binary search tree like the one below, can you write a function that will return true if it is valid? 5 3 9 1 4 Recall that a BST is valid only given the following conditions: The left child subtree of a node contains only nodes with v...

Difficulty: 4/10

Detect Substring in String

How would you write a function to detect a substring in a string? If the substring can be found in the string, return the index at which it starts. Otherwise, return 1 . js function detectSubstring str, subStr return 1 Important do not use the native String clas...

Difficulty: 4/10

Matrix Operations

Here's a fun one: let's say we have a 2D array matrix that is a size of m rows and n columns. It is initially prefilled with 0 s and looks like the following: js 0, 0, 0, 0 , 0, 0, 0, 0 , 0, 0, 0, 0 We are then given a list of increment operations to be performed on ...

Difficulty: 7/10

Power of Three

Given an integer num , write a method to determine if it is a power of 3. The method will be called as follows: js console.log powerOfThree 9 true console.log powerOfThree 7 false Constraints The given would be a non zero positive integer in the ran...

Difficulty: 3/10

Reverse a String

Hey there, welcome to the **challenges** portion of the **AlgoDaily** technical interview course! Over the next few days, you'll get some hands on experience with the essential data structures and algorithms that will help you nail your interview, and land your dream software engineering job. The ...

Difficulty: 2/10

Delete Nodes From A Linked List

Now that we've implemented a linked list challenges implement a linked list , can you write a method that will delete all nodes of a given value? You're given the following standard structure as the definition of a linked list node: js class LinkedListNode constructor val ...

Difficulty: 4/10

What is a Load Balancer? An Introduction

The Load Balancer: Event Coordinator Extraordinaire The Event Planning Analogy Think of managing a large scale coding event as a fun puzzle. You have a whopping 1,000 participants and several halls that can each accommodate 100 eager coders. How do you make sure everyone has a seat witho...

Difficulty: 5/10

What is a Proxy Server?

Demystifying Proxy Servers: Your Guardian of the Internet Why the Need for Proxy Servers? In this age of interconnectivity, the Internet is not just a global village, but a massive metropolis connecting every corner of the earth. It gives us social media, real time communication, and a treas...

Difficulty: 5/10

String Manipulation: Techniques and Best Practices

Introduction Why String Manipulation Matters In the ever evolving world of software development, string manipulation stands as a fundamental and vital skill. Strings are at the heart of human readable data. Whether it's processing user input, reading files, generating dynamic content for w...

Difficulty: 5/10

People at Cisco Say

This information was sourced from reviews originally posted on Glassdoor.

Very Good exposure to the new technologies . Excellent Work Life balance. Campus is too good and well maintained. Good people to work with. Employee Benefits are attractive. Process oriented. No hike every year but it is definitely kept in mind and normalization is done in coming years. Lot of approvals required for any change /request which makes the work lagging at times. This process should be at ease.

I have been with Cisco as a campus hire for almost 2 years now. Didn't feel like the company is fit for freshers, but good and manageable if you really want to purse in networking domain. Company culture is good. Not toxic or work obsessed. Very employee friendly in terms for PTOs, WFHs, Maternity/Paternity leaves etc. Code reviews usually make you a good progammer but it depends on the attitude of the reviewers. Treat employees well in terms of salary. Don't hoard cash and put everything in company's bank account.

Flexibility is given to employee to work and complete projects in time. Market leader in networking with great innovation and technologies to learn and work. High-Profile customers but you need to be technically solid to handle one. Low salaries compared to rest of networking companies. HR are mostly sleeping here as no actions to correct as per Market standard. Sometime a pay hike can take 3-4 years to happen. Because of these good people leave.

Great work life balance. Great work atmosphere and facilities at work. Opportunities for furthering technical skills with trainings and talks. Opportunities to work on things that interest you technically outside of your everyday work. You actually find a healthy number of older developers here. Pay when you join is pretty competitive. There are too many employees and it's difficult to be recognized. Pay hikes don't happen every year and can be less depending on the team or BU you are in.