midterm 1 review

midterm 1 review - Midterm Review History of the Internet...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Midterm Review
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
History of the Internet 1957: Advanced Research Projects Agency (ARPA) Main idea: galactic network of computers 1969: ARPAnet launched (the first internet) Contained four nodes: UCLA (the first node), SRI, Utah, UCSB (fig 1.1-1.2) By the early 1970’s ARPAnet had expanded; connecting major university research facilities to government institutions (i.e. military bases etc.) (fig 1.3)
Background image of page 2
Figure 1.1 – the first node at UCLA (www.computerhistory.org) Figure 1.2 – the first internet 4 nodes (www.computerhistory.org)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Figure 1.3: ARPAnet 1973 (www.computerhistory.org)
Background image of page 4
History of the Internet In the late 1980’s, a “backbone structure” was developed from the NSFnet to allow individual regions to manage their own networks
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How Does it Work? The internet is a large collection of computers which are connected to at least one other computer Computers communicate with each other through other computers called nodes A node is a component in the internet
Background image of page 6
How Does it Work? - A very general (and oversimplified) example: - Internet Communication Your Home Computer SFU Server
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How Does it Work? Example: How does a page get to your computer? Figure 1.7 (b) (a)
Background image of page 8
What are the components? Computer-computer link Modem Figure 1.7 a Telephone • Cable ADSL Figure 1.7 b • Wireless-fidelity (802.11b, 802.11g, 802.11n), • Network cable (ethernet cable) How Does it Work?
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How Does it Work? Servers • They provide services (i.e. Email, web pages, file storage, etc.) Computers that run a server program (i.e. Apache) • Are usually more powerful than regular computers • Are connected to the internet through a faster connection Clients • Computers that use the services on the servers i.e. Client Computers need to run web browsers which allow the client to ‘talk’ to the servers
Background image of page 10
IP – internet protocol (Machine-readable names) Domain Name (Human-readable names) MIME Types – Multipurpose Internet Mail Extensions Has two parts • Type – a general description of what the file is • Subtype – a more specific description i.e. image/jpeg , application/pdf Traveling Web Pages
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/30/2009 for the course CMPT 165 taught by Professor Ramesh during the Summer '09 term at Simon Fraser.

Page1 / 32

midterm 1 review - Midterm Review History of the Internet...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online