Ciena

Role: SDE - 1

College: Not Specified (Computer Science Engineering Student)

Interview Date: February 2022

Interview Type: Not Specified

Result: Selected

Difficulty: Easy to Moderate

Rounds: 3 rounds

Topics Asked: Data Structures (Linked Lists), Algorithms (Dynamic Programming), SQL, Java (keywords, Garbage Collector, JIT Compiler), Computer Networks (TCP/UDP, TCP/IP layers, ipconfig vs ifconfig), Projects

Experience:

This experience is from a Computer Science Engineering student.

Round 1 (15 minutes): Duration 15 minutes, no coding problem mentioned.

Round 2 (45 minutes): Included 8 coding problems (likely referring to multiple parts of a problem or several small problems).

• Given a singly Linked List of integers, return true if it is a palindrome, otherwise false. Follow up: Solve in O(N) time and O(1) space iteratively.
• SQL Question: Write a query to output records where the name starts with 'P' and ends with 'K'.
• Java Question: Do final, finally, and finalize keywords have the same function?
• Java Question: Explain Garbage Collector in Java.
• Java Question: What do you know about JIT Compiler?
• Computer Network Question: Compare TCP and UDP.
• Computer Network Question: Define the 4 different layers of the TCP/IP Reference Model.
• Computer Network Question: What is the difference between ipconfig and ifconfig?

Round 3 (100 minutes): Described as an easy round, conducted via video call. There was a gap of about 2 hours after the 1st interview. In this round, a single coding question was asked, followed by questions from SQL and Java.

• Coding Question: Count derangements (Moderate difficulty).

The candidate was selected. Tips included having application-based projects on the resume and not putting false information.