Today, I learned about the TCP/UDP model. First, I would like talk about the UDP. Before talking about the UDP, I want to reviewed the daily network strucutre! This is how our network form using TCP model. In the chat room project, I learned that most interactive software program use the TCP! Then, what is UDP? UDP: User Datagram Protocol "Best effort" service, UDP segments may be: Lost Delivere..
Today, I learned about the Data center, which most big tech companies have. 10's to 100's of thousands of hosts, often closely coupled, in close proximity: e-business (ex. Amazon) Content-servers (ex. YouTube, Akamai, Apple, Microsoft) Search engines, data mining (ex. Google) Challenges: Multiple applications, each serving massive numbers of clients Managing/balancing load, avoiding processing, ..
People use the network everywhere. Today, I learned about the scenario in real world network. This picture shows us how network make us use the internet in daily life. Connecting laptop needs to get its own IP address, address of first-hop router, address of DNS server. DNS server: use DHCP DHCP request encapsulated in UDP, encapsulated in IP, encapsulated in 802.3 Ethernet Ethernet frame broadc..
