General Questions

Question 1

Why FP?

Why does functional programming matter? When should a functional programming language be used?

Question 2

Browsers:

How do companies like Microsoft, Google, Opera, and Mozilla profit from their browsers?

Question 3

TCP Sockets:

Why does opening a TCP socket have a large overhead?

Question 4

Encapsulation:

What is encapsulation important for?

Question 5

Real-time systems:

What is a real-time system and how is it different from an ordinary system?

Question 6

Real-time and memory allocation:

What’s the relationship between real-time languages and heap memory allocation?

Question 7

Immutability:

Immutability is the practice of setting values once, at the moment of their creation and never changing them. How can immutability help write safer code?

Question 8

Mutable vs Immutable:

What are the pros and cons of mutable and immutable values?

Question 9

Object-Relational Impedance Mismatch:

What’s the Object-Relational impedance mismatch?

Question 10

Sizing a Cache:

Which principles would you apply to define the size of a cache?

Question 11

TCP and HTTP:

What’s the difference between TCP and HTTP?

Question 12

Client-Side vs Server-Side:

What are the tradeoffs of client-side rendering vs. server-side rendering?

Question 13

Reliable and non-reliable channels:

How could you develop a reliable communication protocol based on a non-reliable one?

Question 14

Million-Dollar Mistake:

Tony Hoare who invented the null reference once said “I call it my billion-dollar mistake” since it led to “innumerable errors, vulnerabilities, and system crashes, which have probably caused a billion dollars of pain and damage in the last forty years”. Imagine you want to remove the possibility to have null references in your preferred language: how would you achieve this goal? What consequences could this have?