Druva Software Development Engineer In Test (SDET) interview questions

Interview experience: Druva Name : Akshay Telang round 1 : coding Aptitude: 2 parts 1. CNS, OS , Linux command , DSA based basic MCQ questions 2. three Coding problem: I. Find number of vowels present in the string II. Check wheather give number lies in Fibonacci series or not (fib seq : 0,1,1,2,3,5,8,13,21....) III. Find the maximum two digit number present in the give big integer Ex. I/p: 7649833 Ans. 98 Round 2: Technical interview (40 min.) CNS QUESTIONS: What is 1. subnet mask 2. ip address 3. Mac address 4. ipconfig 5. Ifconfig 6. TCP 7. Difference between TCP and UDP 8. What happens when you type google.com in browser 9. Protocol stake layer in OS model 10. DNS server 11. DHCP OS QUESTIONS: 1. What is multi-threading 2. What is thread and process 3. What is multi-processing Linux questions: 1. Which one is used in Linux: ifconfig or ipconfig and what they display after executing 2. What is the command used to find the specific string present in file or not 3. What is the command used for finding file is present or not in the directory 4. How to search for a specific file like xyz.txt from the computer there are many directories and files are present in Linux on the terminal Coding problems given in the technical round to write on paper: 1. Write a program in any language for the finding particular string present in file or not. (I solved using file handling concept in java) 2. Write a program in any language for removing the duplicate lines from the given log file. (I solved in java using HashSet and file handling) 3. Given a list of single digit integers and we have to find the occurrences of 0,0,7 in sequence their may other integers present in between 0 and 0,7 Example: Input list : [2,0,5,0,7,3] Output : 1 occurrence of 0,0,7 coding problem asked to others: 1. write merge sort 2. fing third/second lagest and third/second smallest integer in list 3. two sum and three sum problem from leetcode 4. basic string manipulation

coding Q.-String character count and putting that into a new string