Study Notes

Day 49 – The Language of Sets

The foundation of set theory was laid by the eminent German Mathematician Georg Cantor during the…
Day 48 – Set Operations

Union (A U B) Given two sets A and B, the union of A and B,…
Day 47 – Powerset of a Set

Notations Subset(recap) A set can have another set as its element. Quick Review: Difference between subset…
Day 46 – Set Representation

Set Representation Listing Method Representing a set S using the listing method consists of listing all…
Day 45 – Intro to Discrete Mathematics

Discrete mathematics is the study of discrete objects, which are different from connected objects. Discrete objects…
Day 44 – DNS and UDP

DNS is a great example of an application layer service that uses UDP for the transport…
Day 43 – DNS

Computers only understand 1 and 0. DNS (Domain Name System) – A global and highly distributed…
Day 42 – Transport and Application Layers

Client: SYN packet sender – The client sends a SYN packet to the server via TCP.…
Day 41 – Source IP and Destination IP

Protocol The Protocol field in the IPv4 header contains a number indicating the type of data…
Day 40 – Subnetting

Valid IP Address Subnetting – the process of taking a large network and splitting it up…