Task 1 - 2

 

Term	Definition
Web server	These are computers/systems that deliver web pages. Web servers all have IP addresses and sometimes have a domain name. The web server also processes requests via HTTP (Beal, 2013)
Mail Server	They are known as mail transfer agents. It is an application that takes incoming mail from the local users (these are people within the same domain). There are different types of mail server, SMTP, POP3 IMAP. The outgoing mail servers are known as SMTP. The incoming mail servers are called POP3. IMAP stores copies of the messages on the server. (Anon., 2015)
Proxy Server	A proxy server is a computer or piece of software that acts as a link between and endpoint device; for example, a computer and the server where the client computer is requesting the service. Firewalls proxies are the names the most secure type of firewall. Information packets do not do not pass through any type of proxy, but instead the proxy acts as the intermediary. (Anon., n.d.) (Anon., 2015)
Browser	This is software that is used to retrieve, locate and show information from the World Wide Web. The web pages displayed will show images, videos etc. a web browser is the client that contacts the web server. (Beal, n.d.)
Protocols	The protocol is the standard used way to define a method of exchanging data over a specific network i.e. Local network, Internet and Intranet. Every protocol has its own method of how it will format the data when it is sent and what to do when it is received, it will also check how the data will be compressed. (Anon., n.d.)
TCP/IP	This is the basic communication language of the internet. It can be used in private networks (communication protocol). The private network can be either intranet or extranet. It is a two layer program, the higher layer (TCP), sorts the building of a message or file into smaller packets.  IP handles the address part of every packet so that it arrives at its correct location. (Anon., n.d.)
Application layer	The application layer makes sure that the other part is able to be identified and reached. It makes sure that correct communication resources are available. The application layer is also a layer in the OSI seven layer models and is in the TCP/IP protocol. (techpedia, n.d.)
HTTP	HTTP stands for Hyper Text Transfer Protocol. HTTP is the foundation of data for the WWW (World Wide Web). It also tells you how the messages are formatted and transmitted. (Beal, n.d.)
HTTPS	HTTPS stands for Hyper Text Transfer Protocol Secure it is known for being the secure version of HTTP. Data is sent between the browser and the website. The letter ‘S’ in the name stands for ‘Secure’. The data that is sent between the browser and the website is encrypted. (comodo, n.d.)
SMTP	SMPT stands for Simple Mail Transfer Protocol. It is the main method for electronically sending mail across the internet. It uses the TCP port 25 by default. (Anon., 2015)
POP3	POP3 stands for Post Office Protocol 3. POP3 is a client or a server protocol that when the email is received it is held by the internet server. (Rouse, 2007)

 

 

 

 

 

 

Bibliography

Anon., 2015. proxy server. [Online]
Available at: http://whatis.techtarget.com/definition/proxy-server
[Accessed 9 october 2015].

Anon., 2015. Simple Mail Transfer Protocol. [Online]
Available at: https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol
[Accessed 14 october 2015].

Anon., 2015. What is a Mail Server?. [Online]
Available at: http://whatismyipaddress.com/mail-server
[Accessed 9 October 2015].

Anon., n.d. How Proxy Firewalls Work. [Online]
Available at: http://www.bullguard.com/bullguard-security-center/pc-security/computer-security-resources/how-proxy-firewalls-work.aspx
[Accessed 14 october 2015].

Anon., n.d. Protocol. [Online]
Available at: http://www.computerhope.com/jargon/p/protocol.htm
[Accessed 9 october 2015].

Anon., n.d. TCP/IP (Transmission Control Protocol/Internet Protocol) definition. [Online]
Available at: http://searchnetworking.techtarget.com/definition/TCP-IP
[Accessed 9 october 2015].

Beal, V., 2013. Web Server. [Online]
Available at: http://www.webopedia.com/TERM/W/Web_server.html
[Accessed 9 October 2015].

Beal, V., n.d. HTTP - HyperText Transfer Protocol. [Online]
Available at: http://www.webopedia.com/TERM/H/HTTP.html
[Accessed 14 october 2015].

Beal, V., n.d. web browser. [Online]
Available at: http://www.webopedia.com/TERM/B/browser.html
[Accessed 9 october 2015].

comodo, n.d. What is HTTPS?. [Online]
Available at: https://www.instantssl.com/ssl-certificate-products/https.html
[Accessed 14 october 2015].

Rouse, M., 2007. POP3 (Post Office Protocol 3) definition. [Online]
Available at: Post Office Protocol 3
[Accessed 14 october 2015].

techpedia, n.d. Application Layer. [Online]
Available at: https://www.techopedia.com/definition/6006/application-layer
[Accessed 9 october 2015].