F5 Networks Software Engineer III Interview Questions, Process, and Tips

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
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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
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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.
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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
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Q2. Three sum leetcode problem
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Q3. K reversed linkedlist leetcode hard
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Q1. 2 Coding questions - 1 medium and 1 easy Backend concepts and Data structure questions
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Q1. 2 Coding questions - both medium HLD of my current project
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Q1. Backend concepts Some LLD questions around my current project
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Q1. Cultural fitment round - questions around any failures and conflicts and how did I handle them
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Q1. Discussion around why f5 and personal background check
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