Journal+Entry+-+April+18th+to+April+21st+2011

===ACHIEVEMENT CHART: TECHNOLOGICAL EDUCATION ===

===Journal === || ===Application === ||
 * === === || ===Knowledge Understanding === || ===Thinking === || ===Communication ===
 * ===50–59% (Level 1) === || === === || === === || === === || === === ||
 * ===60–69% (Level 2) === || === === || === === || === === || === === ||
 * ===70–79% (Level 3) === || === === || === === || === === || === === ||
 * ===80–100% (Level 4 === || === === || === === || ===*=== || ===*=== ||

Knowledge and Understanding – Specific content acquired (software), and the comprehension of its meaning and significance (understanding)

 * Thinking – The use of critical and creative thinking skills and/or processes**
 * Application - of knowledge and skills (e.g., concepts, processes, use of equipment and technology)**

Today we watched a couple of videos about any things through the internet like: the security of dial up internet, wifi hot hotspots and the reability and security of wikipedia.org. We also going to start reading chapter 6 on ten cisco network academy. My recet mark is % 80.7 so Im happy withthat mark I expect it to go up even more because I will improve.
 * __Monday April 18th 2011:__**

We watched a couple of videos about lectures and VLANS which are virtual local area networks which act like one single LAN. VLANs have also a single broadcast domain which means that if onme pc sends a broadcast message to the switch, then only the broadcast domain will reccive the message therefore it is very useful. Computers on different VLANs need to have different subnet masks. Inorder for this to happen, a third device like a router must be present to take, decode, and change the ip address.
 * __Tuesday April 19th 2011:__**

I started reading chapter 6 today and here are the relevant information that I read today: Hypertext Transfer Protocol (HTTP) governs the way that a web server and a web client interact. HTTP defines the format of the requests and responses exchanged between the client and server. HTTP relies on other protocols to govern how the messages are transported between client and server. Transmission Control Protocol (TCP) is the transport protocol that manages the individual conversations between web servers and web clients. TCP formats the HTTP messages into segments to be sent to the destination host. It also provides flow control and acknowledgement of packets exchanged between hosts. The most common internetwork protocol is Internet Protocol (IP). IP is responsible for taking the formatted segments from TCP, assigning the logical addressing, and encapsulating them into packets for routing to the destination host.
 * Application Protocol:**
 * Transport Protocol:**
 * Internetwork Protocol:**


 * Network access protocols perform two primary functions:** data link management and physical network transmissions.


 * - Ethernet cables is the most common way to run a local network (LAN)**
 * - The two most common transport protocols are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). The IP protocol uses these transport protocols to enable hosts to communicate and transfer data.**
 * - When an application requires acknowledgment that a message is delivered, it uses TCP. This is similar to sending a registered letter through the postal system, where the recipient must sign for the letter to acknowledge its receipt.**


 * Stopped reading at 6.1.3**

UDP is preferable with applications such as streaming audio, video and voice over IP (VoIP). Acknowledgments would slow down delivery and retransmissions are undesirable.
 * __Wednesday April 20th 2011:__**
 * The relevant information that I read today:**
 * -**UDP is a 'best effort' delivery system that does not require acknowledgment of receipt. This is similar to sending a standard letter through the postal system. It is not guaranteed that the letter is received, but the chances are good.



- A port is a numeric identifier within each segment that is used to keep track of specific conversations and destination services requested. Every message that a host sends contains both a source and destination port. - DNS - The Domain Name System (DNS) provides a way for hosts to use this name to request the IP address of a specific server. DNS names are registered and organized on the Internet within specific high level groups, or domains. Some of the most common high level domains on the Internet are .com, .edu, and .net.

- When a web client receives the IP address of a web server, the client browser uses that IP address and port 80 to request web services. This request is sent to the server using the Hypertext Transfer Protocol (HTTP). When the server receives a port 80 request, the server responds to the client request and sends the web page to the client. The information content of a web page is encoded using specialized 'mark-up' languages. HTML (Hypertext Mark-up Language) is the most commonly used but others, such as XML and XHTML, are gaining popularity. - HTTP secure port is port 443 - These requests require the use of https: in the site address in the browser, rather than http:. These requests require the use of https: in the site address in the browser, rather than http:. - SMTP (Simple Mail transfer protocol) uses port 25 - POP3 (Post office Protocol) uses port 110 - IMAP 4 (Internet Message Access Protocol) uses port 143 Stopped reading at **6.2.5** Today watched a couple of videos about subneting on youtube and then I did my chapter 3 restest which shows the mark on the screen dump below. Then me and paul did my packet tracer.
 * __Thursday April 21st 2011:__**