Interview experience: Druva
Round 1 :
Coding Aptitude: 2 parts
- 1. CNS, OS, Linux command, DSA-based basic MCQ questions
- 2. Three coding problems:
- Find the number of vowels present in the string
- Check whether the given number lies in the Fibonacci series or not
(fib seq: 0,1,1,2,3,5,8,13,21….)
- Find the maximum two-digit number present in the given big integer
Ex. I/p: 7649833
Ans. 98
Round 2: Technical interview (40 min.)
CNS QUESTIONS:
- What is 1. subnet mask
- IP address
- Mac address
- ipconfig
- ifconfig
- TCP
- Difference between TCP and UDP
- What happens when you type google.com in the browser
- Protocol stake layer in OS model
- DNS server
- DHCP
OS QUESTIONS:
- What is multi-threading
- What is thread and process
- What is multi-processing
Linux questions:
- Which one is used in Linux: ifconfig or ipconfig and what do they display after executing
- What is the command used to find the specific string present in the file or not
- What is the command used for finding file is present or not in the directory
- How to search for a specific file like xyz.txt from the computer there are many
directories and files present in Linux on the terminal
Coding problems given in the technical round to write on paper:
1. Write a program in any language the find a particular string present in the file or not.
(I solved this using the file handling concept in Java)
2. Write a program in any language to remove the duplicate lines from the given log file.
(I solved this in Java using HashSet and file handling)
3. Given a list of single-digit integers we have to find the occurrences of 0,0,7 in sequence
There may other integers present 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:
- write merge sort
- Find the third/second largest and third/second smallest integer in the list
- Two sum and three sum problems from leetcode
- Basic string manipulation
Round 2: Technical + HR interview :
I was not selected after technical, this was my first interview.