CS 8 Midterm 3 Study Guide
Chapter 7
In late 1960s US created the ARPA to launch new technology for military after the Soviet Union launched sputnik
ARPANET located at UCLA UCSB Standford and Utah
NSFNET created to connect computer science departments of universities to web
World Wide Web is different from net because the internet is the physical entity and the WWB is just one way the information moves about the internet, I, email, VoIP, file sharing created in late 1990s
Late 1990s the commercial network came out: Pizza hut, 1st White house website
Internet 2: the second internet designed for education, research, and collaboration, very much like the original internet—only faster
Bandwidth: the data transfer rate of a network and is measured in kilobits per second (Kbps), megabits (Mbps), or gigabits(Gbps)
Dial up: the least expensive; your regular phone lines to connect to the network. Slow and can tie up your phone line while you are online.
DSL: uses telephone lines to carry digital signals. Faster than ordinary telephone lines. Slower than cable and cheaper than cable. Problem: must be within 3 miles of the DSL service provider’s facilities. The further the slower.
Broadband: faster! 200kbps but more expensive
Cable: offered by cable TV provider and uses the same wires to carry both signals. Faster than DSL and broadband. Problem: share cable along with broadband with neighbors.
Fiber-to-the-home: “fiber-to-the-premises” FASTEST 300kbps. MORE EXPENSIVE. Internet and phone and TV carried over a fiber optic cable i.e. Verizon, Google Fiber. Problem: requires a contractor to lay a fiber-optic conduit directly to the home that can be costly and requires digging up in your lawn
Wireless: established by cellular network standards 3G and 4G (WiMAX and LTE) transmitted by a series of cellular towers so not universal 3G 4G 5G slowest to fastest 5G COMING 2020
Satellite Internet Access: more global and more expensive. Speed compatible to DSL. Weather conditions are a problem and positioned
In late 1960s US created the ARPA to launch new technology for military after the Soviet Union launched sputnik
ARPANET located at UCLA UCSB Standford and Utah
NSFNET created to connect computer science departments of universities to web
World Wide Web is different from net because the internet is the physical entity and the WWB is just one way the information moves about the internet, I, email, VoIP, file sharing created in late 1990s
Late 1990s the commercial network came out: Pizza hut, 1st White house website
Internet 2: the second internet designed for education, research, and collaboration, very much like the original internet—only faster
Bandwidth: the data transfer rate of a network and is measured in kilobits per second (Kbps), megabits (Mbps), or gigabits(Gbps)
Dial up: the least expensive; your regular phone lines to connect to the network. Slow and can tie up your phone line while you are online.
DSL: uses telephone lines to carry digital signals. Faster than ordinary telephone lines. Slower than cable and cheaper than cable. Problem: must be within 3 miles of the DSL service provider’s facilities. The further the slower.
Broadband: faster! 200kbps but more expensive
Cable: offered by cable TV provider and uses the same wires to carry both signals. Faster than DSL and broadband. Problem: share cable along with broadband with neighbors.
Fiber-to-the-home: “fiber-to-the-premises” FASTEST 300kbps. MORE EXPENSIVE. Internet and phone and TV carried over a fiber optic cable i.e. Verizon, Google Fiber. Problem: requires a contractor to lay a fiber-optic conduit directly to the home that can be costly and requires digging up in your lawn
Wireless: established by cellular network standards 3G and 4G (WiMAX and LTE) transmitted by a series of cellular towers so not universal 3G 4G 5G slowest to fastest 5G COMING 2020
Satellite Internet Access: more global and more expensive. Speed compatible to DSL. Weather conditions are a problem and positioned