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Ciena Lead Engineer Interview Questions, Process, and Tips
Ciena Lead Engineer Interview Experiences
1 interview found
Anonymous
Interview Questionnaire
6 Questions
- Q1. 1. sort a stack without auxillary space
- Ans.
Sort a stack without auxiliary space
Use recursion to pop elements from stack and insert them in sorted order
Compare the top element with the next element and swap if necessary
Repeat until stack is sorted
- Q2. 2. design and write production code of thread pool
- Ans.
A thread pool is a group of threads that can be reused to execute multiple tasks concurrently.
Define a task interface that encapsulates the work to be done
Create a queue to hold tasks
Create a fixed number of threads in the pool
Each thread should loop indefinitely, taking tasks from the queue and executing them
Use synchronization primitives to ensure thread safety
Consider using a thread-safe data structure for the task ...
- Q3. 3. singleton implementation thread safe
- Q4. Shared and unique ptr implementation
- Ans.
Shared and unique pointer implementation in C++
Shared pointers allow multiple pointers to refer to the same object, automatically deleting the object when the last pointer is destroyed.
Unique pointers allow only one pointer to refer to an object, automatically deleting the object when the pointer is destroyed.
Shared pointers use reference counting to keep track of the number of pointers referring to an object.
Unique po...
- Q5. Given the frequency of three letters 'a' 'b' and 'c'..form the largest string by using a,b, and c provided 3 (a , b or c )cant be together and the possible string should be largest.
- Ans.
Form the largest string using a, b, and c with the condition that 3 (a, b, or c) can't be together.
Start with the most frequent letter and alternate with the other two.
If there are two letters with the same frequency, start with the one that has the least number of adjacent letters.
Example: 'abcabcab' is not valid, but 'abacbac' is valid and larger.
- Q6. Ex1 ) dict = {'abab' , 'aba', 'xyz', 'xyx'} pattern {'aba'} output {'aba' , 'xyx'} , ex 2) dict = {'abb' , 'abc' , 'xyz', 'xyy'} paatern {'mno'} output {abc , xyz} ...
- Ans.
Code to find strings in a dictionary matching a given pattern
Iterate through the dictionary and check if each string matches the pattern
Add the matching strings to an output array
Return the output array
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Interview Questionnaire
8 Questions
- Q1. Str[]=
- Ans.
str[] is an array of strings.
str[] can hold multiple strings in a single variable.
Each element in str[] is a string.
str[] can be accessed using index numbers.
- Q2. Factorial and Fibonacci with and without recurssion
- Ans.
Factorial and Fibonacci can be calculated with or without recursion.
Factorial can be calculated using a loop or recursion.
Fibonacci can be calculated using a loop or recursion.
Recursion can lead to stack overflow for large inputs.
Iterative solutions are more efficient for large inputs.
- Q3. Process Scheduling in OS
- Ans.
Process scheduling is the method by which the operating system decides which process to run first.
Process scheduling is an important part of operating system design.
It involves deciding which process to run first, based on various criteria such as priority, time slice, and resource availability.
There are several scheduling algorithms, including First-Come-First-Serve (FCFS), Round Robin, and Priority Scheduling.
FCFS is...
- Q4. Have you worked on LINUX
- Ans.
Yes, I have worked extensively on LINUX.
I have experience in LINUX system administration and shell scripting.
I have developed applications using C++ and Python on LINUX platform.
I have worked with various LINUX distributions such as Ubuntu, CentOS, and Red Hat.
I am familiar with LINUX command line tools and utilities.
I have worked with LINUX servers and virtual machines.
- Q5. We have given a string and we have to tell the output of printf(
- Q6. Difference in Function overloading and overriding
- Ans.
Function overloading is having multiple functions with the same name but different parameters. Function overriding is having a derived class function with the same name and parameters as the base class function.
Function overloading is a compile-time polymorphism concept while function overriding is a runtime polymorphism concept.
Function overloading is used to provide multiple ways to call a function with different par...
- Q7. OOPs Concepts
- Q8. Projects (He was interested in programming on linux so be familiar with linux)
Interview Preparation Tips
Experience: There were many sections :
1. Aptitute
2. OS
3. Network
4. Java
5.DS
6. C
College Name: NA
Skills evaluated in this interview
Interview Questionnaire
6 Questions
- Q1. Introduce yourself
- Ans.
I am a software engineer with experience in developing web applications and mobile apps.
I have a degree in Computer Science
I am proficient in programming languages such as Java, Python, and JavaScript
I have experience working with frameworks such as React and Angular
I have developed several web applications and mobile apps, including a social media platform and a fitness tracking app
- Q2. OSI network model and protocols on Layer 2 and Layer 3
- Ans.
OSI network model has 7 layers. Layer 2 is Data Link layer and Layer 3 is Network layer.
Layer 2 protocols include Ethernet, Wi-Fi, and PPP
Layer 3 protocols include IP, ICMP, and ARP
Data Link layer provides error-free transmission over physical layer
Network layer provides logical addressing and routing of data packets
- Q3. Layer 2 and Layer 3 devices (hardware used)
- Ans.
Layer 2 devices operate at the data link layer, while Layer 3 devices operate at the network layer.
Layer 2 devices include switches and bridges.
Layer 3 devices include routers and layer 3 switches.
Layer 2 devices forward frames based on MAC addresses.
Layer 3 devices forward packets based on IP addresses.
- Q4. In detailed working of Routers(with practical example).Its difference with a switch
- Ans.
Routers direct traffic between networks while switches connect devices within a network.
Routers use IP addresses to direct traffic between networks
Routers can prioritize traffic based on Quality of Service (QoS)
Switches use MAC addresses to connect devices within a network
Switches can create virtual LANs (VLANs) to segment a network
Example of a router: Cisco ISR 4000 series
Example of a switch: Cisco Catalyst 2960 serie
- Q5. Practical example on difference between OSI and TCP/IP network model
- Ans.
OSI has 7 layers while TCP/IP has 4 layers.
OSI model is theoretical while TCP/IP is practical
OSI has a dedicated session layer while TCP/IP does not
TCP/IP combines the presentation and session layers into one
OSI is more complex and rarely used in practice
TCP/IP is the standard for internet communication
- Q6. Program on string reversal (any language)
- Ans.
Program to reverse a string in any language
Declare a string variable
Loop through the string in reverse order
Append each character to a new string variable
Return the new string variable
Interview Preparation Tips
Experience: It was a general + technical aptitude test of medium level difficulty.Speed and accuracy do matter here to crack this round. Basic theoretical concepts learnt during B.Tech were checked in this round.
Tips: Before the Selection process, do brush up on basics of important core subjects of syllabus.
Duration: 90 minutes
Total Questions: 70
Round: Technical Interview
Experience: Started with basic questions on networking and communication concepts.Slowly progressed to in-detail questions.Have a strong hold on the subject you like and Final Year project was emphasized.
Tips: Dont hassle if you dont know the answer for some questions.Keep yourself cool.
General Tips: 1: Be Confident.
2: Keep Smiling.
3: Do not be Panic.
4: Remember they are here to hire you but not reject you.
5: Do not loose hope.
6: Believe at yourself.
7: Start preparing early.
8: Do demo interviews with your friend.
Skills: Speed, Programming, Computer networks knowledge, Accuracy
College Name: VIT VELLORE
Motivation: Every body joins a comapny for making a software or earning money. But I was always motivated to MAKE MONEY. I have taken this job because they have very extensive work in Share Market and they have lots of MBA from IIM's, Lots of CAs, CS. Thats why i have choosen Edelweiss. I have rejected epic System USA for this profile.
Skills evaluated in this interview
Interview Questionnaire
4 Questions
- Q1. Write a C code for printing Febonacci Series upto n elements
- Ans.
C code for printing Fibonacci Series upto n elements
Declare three variables to store the current, previous and next numbers in the series
Initialize the previous and current variables to 0 and 1 respectively
Use a loop to print the next number in the series by adding the previous two numbers
Loop should run n times to print n elements in the series
- Q2. Question related to family background
- Q3. What are your hobbies?
- Q4. What are your strengths and weaknesses?
Interview Preparation Tips
Experience: Questions were from easy to moderate level. No negative marking, so attempt all.
Tips: Keep your mind open and practice aptitude problems on a daily basis.
Round: Group Discussion
Experience: There were 21 students selected out of which two teams of 10 and 11 students were formed. Both the groups were given a topic and each one of us had to express our views.
Tips: Don't get nervous, just speak whatever you think. Don't yell or speak at loudly, just keep calm and put your points forward.
Duration: 20 minutes
Round: Technical Interview
Experience: Apart from the above questions some puzzles and DBMS questions and a few basic C questions were also asked. We were given enough time to think and answer.
Tips: Do not be in a hurry. Think properly what you are going to say, whether it is right or not and then only answer.
Round: HR Interview
Experience: The HR round was a good one. He tried to test my thinking capabilities and reasoning capabilities
Tips: Answer every question honestly.
General Tips: All the four rounds were elimination rounds and the final result was announced based on cumulative performance. So, be patient and give your best.
Skill Tips: Try to answer every properly
Skills: IQ, Basic Coding Skills, Problem Solving Skills
College Name: NIT ALLAHABAD
Motivation: The company visited our college campus. Also, one of my relatives in in Ericsson at a very high post and is quite happy working here.
Skills evaluated in this interview
I was interviewed in Mar 2017.
Interview Questionnaire
8 Questions
- Q1. Basics of networking
- Q2. Data structures
- Q3. Sql
- Q4. Introduction
- Q5. Final year project
- Q6. Why should I hire you?
- Ans.
I have the technical skills, experience, and passion to deliver high-quality software solutions.
I have a strong background in programming languages such as Java, Python, and C++.
I have experience working on complex software projects and collaborating with cross-functional teams.
I am passionate about staying up-to-date with the latest technologies and trends in software development.
I am a quick learner and have a strong...
- Q7. Why Ericsson?
- Ans.
Ericsson is a global leader in telecommunications technology with a strong focus on innovation and career development.
Global leader in telecommunications technology
Strong focus on innovation
Opportunities for career development
- Q8. About relocation
Interview Preparation Tips
Experience: The test which I wrote was based on cocubes. quants was easy, one can easily score 50 percent if they refer rs agarwal and logical was easy but it takes more time and verbal was neither easy nor tough. One thing I want to advice try doing verbal first so that u can save time and then go to quant and logical. After the test we got the results out of 160 students 51 cleared the test. I was one among them.
Duration: 45 minutes
Total Questions: 45
Round: Technical Interview
Experience: Keep ur cool in the technical. people are friendly. Think before you answer twice they may ask u puzzles as well. So be prepared for it. Final year project is a must, they are gonna ask u the details how you implement stuffs in your project. After my technical out of 51 students around 30 cleared this round. I was one among them.
Round: HR Interview
Experience: Don't be scared guys. Hr is just a casual one. finally around 15 were selected from my college including me. I am very happy with the result. best of luck guys. Do well!!!
Tips: Keep your cool. stay confident that's all I can tell. Once you clear technical one can easily clear Hr round.
Skills: Communication, Technical Skill
College Name: JSS Academy of Technical Education - JSSATE
I was interviewed in Feb 2017.
Interview Preparation Tips
Experience: It was a simple aptitude test in which around 150 students cleared the test.
Duration: 1 hour
Total Questions: 40
Round: Test
Experience: Three programs were given and we had to write the code in either java ,c or c++ and get the required output.Around 90 students cleared this round.
Duration: 1 hour 30 minutes
Total Questions: 3
College Name: VIT Vellore
Software Engineer Interview Questions & Answers
Huawei Technologies
Shiridi sai prasad
posted on 3 May 2017
I was interviewed before May 2016.
Interview Preparation Tips
Experience: The test was conducted through Cocubes. It was moderately difficult. Some of the questions are time taking. We need to be decisive in attempting such questions.
Tips: Need to manage time properly. Should assess and choose which questions to attempt and which ones to leave.
Duration: 1 hour
Total Questions: 30
Round: Test
Experience: The three questions are of three different levels.
1. You will be given two numbers. The first one is the starting point and the second one is the ending point of a range of integers. You have to count the number of integers in that range which are divisible by the first number.
Ex : INPUT : 3 18
OUTPUT : 6
2. You will be given a number. You have to find the sum of the digits. If the sum exceeds 9, you have to add the digits of the sum recursively until you a get a single digit sum.
EX : INPUT : 9999
OUTPUT : 9
Explanation: 9999 => 9 +9+9+9=36 => 3+6 =9
3. You will be given an array of characters which include ( L, R , or a number in the range '0' to '9'). A ball is kept on a line of integers initially kept at zero. The ball has to execute the instructions sequentially as follows:
(i) If an 'L' character is encountered, the ;position of the ball has to be decremented.
(ii) If an 'R' character is encountered, the position of the ball has to be incremented.
(iii) If an integer (in the range '0' to '9) is encountered , we have to go to that index in the array and execute the instruction present in that index.
Finally, after all the instructions are executed, you have to print the final position of the ball.
EX : INPUT :
Number of instruction : 5
Instructions: LR1R2
OUTPUT : 3
Explanation :
(i) Initially, the ball is at 0. Since the 0th index in the array is 'L' , the ball moves to 0-1= -1 position.
(ii) The 1st index is 'R' hence, the position of the ball is -1 +1 = 0 position.
(iii) The 2nd index is '1', hence we have to go to index 1 in the array which is 'R', hence the new position is 0+1 =1.
(iv) The 3rd index is 'R', hence the new position is 1 +1 =2.
(v) The 4th index is '2' , hence we have to go to 2nd index is '1' , hence we have to go again to 1st index , which is 'R' hence the final position is 2+1 =3.
Tips: We need to solve all the three the problems to have better chances of clearing this round.
Duration: 1 hour
Total Questions: 3
Round: Technical Interview
Experience: The interview was focussed majorly on coding. It went for about 45min with around 10 coding problems given to solve. Some basics of Computer networking are also tested in this round.
Tips: Be prepared with some basics of networking. As the company's main focus is on Telecom, good knowledge in telecom and networking would be a big advantage.
Round: Technical Interview
Experience: This round was focused on the aptitude and reasoning skills. Some puzzles were given in this round. These puzzles are of moderately complex and are more common ones in interviews. Like the (find the heavier ball among three balls using a balance in min no. of attempts).
Tips: Sometimes the interviewer tries to confuse. You need to be confident with your answers and explaination.
Round: HR Interview
Experience: The interview was more of a traditional HR round. Majorly concentrated on the final year project, personal strengths and weaknesses.
Skills: Coding Skills, Computer Networking, C Language Basics
College Name: G Pulla Reddy College of Engineering & Technology
I was interviewed in Mar 2017.
Interview Questionnaire
5 Questions
- Q1. Related to semiconductors, processors etc. were asked.
- Q2. Strength
- Q3. Weaknesses
- Q4. Hobby
- Q5. If there are 200 fishes in an aquarium. 99% are red. How many fishes have to be removed to make the red fishes 98 % in the aquarium?
- Ans.
To make the red fishes 98%, 50 fishes have to be removed from the aquarium.
Calculate 1% of 200 fishes, which is 2 fishes.
To make the red fishes 98%, subtract 1% (2 fishes) from 99% (198 fishes).
To find the number of fishes to be removed, divide the difference by 1% (2 fishes).
Therefore, 50 fishes have to be removed to make the red fishes 98%.
Interview Preparation Tips
Experience: There were 40 aptitude questions of variable difficulty. More questions revolved around topics like time and work, distance, speed, time, profit loss, age etc.
Tips: A regular and prior preparation will go a long way in determining a good test score.
Use tricks to solve the questions and calculations should be fast.
Duration: 30 minutes
Total Questions: 40
Round: Test
Experience: The questions weren't that tough when it came to programming. An example would be conversion of temperature from Celsius to Fahrenheit and vice versa. This was a question in my paper. So I'm hoping the difficulty would be more or less the same.
Tips: Do certified programming courses. They help you a lot in cracking good jobs.
Duration: 45 minutes
Total Questions: 3
Round: Puzzle Interview
Tips: This can be tough if you can't imagine scenarios and situations. So make sure you inculcate critical problem solving thinking in your everyday life. I feel that's the best way to do things in this round.
Round: Technical Interview
Experience: This was a short interview so not much happened.
Tips: Whatever you do just know your stuff properly.
Round: HR Interview
Experience: It was a simple interview. Basic questions and their basic answers helped me get through it.
Tips: The tip would be to stay positive in your approach while answering the questions
Skills: Technical Skills, Interpersonal Communication, Aptitude
College Name: VIT Vellore
I was interviewed in Mar 2017.
Interview Questionnaire
5 Questions
- Q1. Related to semiconductors, processors etc. were asked.
- Q2. Strength
- Q3. Weaknesses
- Q4. Hobbies
- Q5. If there are 200 fishes in an aquarium. 99% are red. How many fishes have to be removed to make the red fishes 98 % in the aquarium?
- Ans.
To make the red fishes 98%, 50 fishes have to be removed from the aquarium.
Calculate 1% of 200 fishes to find the number of red fishes.
Subtract the number of red fishes from 200 to find the number of non-red fishes.
Calculate 2% of the total number of fishes to find the desired number of red fishes.
Subtract the desired number of red fishes from the current number of red fishes to find the number of fishes to be removed.
Interview Preparation Tips
Experience: There were 40 aptitude questions of variable difficulty. More questions revolved around topics like time and work, distance, speed, time, profit loss, age etc.
Tips: A regular and prior preparation will go a long way in determining a good test score.
Use tricks to solve the questions and calculations should be fast.
Duration: 30 minutes
Total Questions: 40
Round: Test
Experience: The questions weren't that tough when it came to programming. An example would be conversion of temperature from Celsius to Fahrenheit and vice versa. This was a question in my paper. So I'm hoping the difficulty would be more or less the same.
Tips: Do certified programming courses. They help you a lot in cracking good jobs.
Duration: 45 minutes
Total Questions: 3
Round: Puzzle Interview
Tips: This can be tough if you can't imagine scenarios and situations. So make sure you inculcate critical problem solving thinking in your everyday life. I feel that's the best way to do things in this round.
Round: Technical Interview
Experience: This was a short interview so not much happened.
Tips: Whatever you do just know your stuff properly.
Round: HR Interview
Experience: It was a simple interview. Basic questions and their basic answers helped me get through it.
Tips: The tip would be to stay positive in your approach while answering the questions
Skills: Technical Skill, Interpersonal Communication, Aptitude
College Name: VIT Vellore
Software Engineer Interview Questions & Answers
Huawei Technologies
Aman Kushwaha
posted on 28 Jun 2017
I was interviewed in Mar 2017.
Interview Questionnaire
5 Questions
- Q1. Related to semiconductors, processors etc. were asked.
- Q2. Weaknesses
- Q3. Strength
- Q4. Hobby
- Q5. If there are 200 fishes in an aquarium. 99% are red. How many fishes have to be removed to make the red fishes 98 % in the aquarium?
- Ans.
To make the red fishes 98%, 50 fishes have to be removed from the aquarium.
Calculate 1% of 200 fishes to find out how many fishes represent 1%.
Multiply the result by 2 to find out how many fishes represent 2%.
Subtract the result from 200 to find out how many fishes represent 98%.
Interview Preparation Tips
Experience: There were 40 aptitude questions of variable difficulty. More questions revolved around topics like time and work, distance, speed, time, profit loss, age etc.
Tips: A regular and prior preparation will go a long way in determining a good test score.
Use tricks to solve the questions and calculations should be fast.
Duration: 30 minutes
Total Questions: 40
Round: Test
Experience: The questions weren't that tough when it came to programming. An example would be conversion of temperature from Celsius to Fahrenheit and vice versa. This was a question in my paper. So I'm hoping the difficulty would be more or less the same.
Tips: Do certified programming courses. They help you a lot in cracking good jobs.
Duration: 45 minutes
Total Questions: 3
Round: Puzzle Interview
Tips: This can be tough if you can't imagine scenarios and situations. So make sure you inculcate critical problem solving thinking in your everyday life. I feel that's the best way to do things in this round.
Round: Technical Interview
Experience: This was a short interview so not much happened.
Tips: Whatever you do just know your stuff properly.
Round: HR Interview
Experience: It was a simple interview. Basic questions and their basic answers helped me get through it.
Tips: The tip would be to stay positive in your approach while answering the questions
Skills: Technical Skill, Interpersonal Communication, Aptitude
College Name: VIT Vellore
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