F5 Networks Interview Questions, Process, and Tips

90 min MCQ +coding test on hackerrank.

Q1. Sort colors DSA question
Add your answer
Q2. Detect cycle in a linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect cycle in a linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at some point, there is a cycle in the linked list.
Answered by AI
Add your answer

Q1. Was asked about why you want to join the company,my experience etc.
Add your answer

Q1. SSL TLS Handshake
Add your answer
Q2. TCP Handshake and Flags
Add your answer
Q3. HTTP/S Requests Response
Add your answer
Q4. DNS Security Details
Add your answer
Q5. Web Application Firewall
Add your answer
Q6. Advanced BOT Protection
Add your answer
Q7. API Security Details
Add your answer
Q8. Cloud and On-Prem WAF
Add your answer
Q9. Basic Networking Concepts
Add your answer
Q10. Next-Gen Firewall Concepts
Add your answer

2 easy to moderate questions and 20 multiple choice questions related to C/C++/Netowking/System Calls/OS

Q1. Difference b/w global and static variable in C
Ans. 
Global variables are accessible throughout the program, while static variables are limited to the scope in which they are defined.
• Global variables are declared outside of any function and can be accessed by any function in the program.

• Static variables are declared within a function and retain their value between function calls.

• Example: int globalVar = 10; static int staticVar = 5;

• Example: Global variable can be accesse...read more
Answered by AI
Add your answer
Q2. Process vs Thread
Ans. 
Processes are independent instances of a program, while threads are smaller units within a process sharing resources.
• Processes have their own memory space, while threads share the same memory space within a process.

• Processes are heavyweight, requiring more resources, while threads are lightweight.

• Processes communicate with each other through inter-process communication mechanisms, while threads can communicate directly...read more
Answered by AI
Add your answer
Q3. Internal working of the segmentation fault, how the compiler knows it is a segmentation error.
Ans. 
Segmentation fault occurs when a program tries to access memory it doesn't have permission to access.
• Segmentation fault occurs when a program tries to access memory outside of its allocated space.

• Compiler detects segmentation faults by checking memory access permissions during compilation.

• Segmentation faults are typically caused by dereferencing a null pointer or accessing an out-of-bounds array element.
Answered by AI
Add your answer

Q1. Right and left view of binary tree
Ans. 
To get the right and left view of a binary tree, perform a level order traversal and keep track of the first node encountered at each level.
• Perform a level order traversal of the binary tree

• Keep track of the first node encountered at each level for both left and right views

• Store the first node encountered at each level in separate arrays for left and right views
Answered by AI
Add your answer
Q2. Three sum leetcode problem
Add your answer
Q3. K reversed linkedlist leetcode hard
Add your answer