chapter 6-mis
Terms
undefined, object
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- network
- collection of computers, communicate with one another over transmission line
- major types of network topologies
- LAN, WAN, The internet and internets
- LAN
- local area network- computers connected a a single physical site
- the internet and internets
- networks of networks
- switch
- special purpose computer that recieves and transmits messages
- ISP
- internet service provider- a company that provides customers access to the internet, provides legitmate internet address, serves as gateway to internet, and u pay for internet access
- protocol is
- a set of rules that two communicating devices follow
- NIC
- network interface card,a device that connects the computers or printers circuitru to the network cables
- onboard NIC
- a NIC built into the computers circuitru
- wireless NIC(WNIC)
- wireless computers and printers
- access point
- the component of the LAN device that processes wireless traffic and communciates with th wired switch
- bluetooth
- another common wireless protocol
- assymmetric digital subscriber lines (ADSL)
- different upload nad download speeds
- cable modem
- provide high speed data tranmission using cable television lines
- TCP/IP Protocol architechure
-
a scheme of five protocol types arranged in layers...
- five protocal types
- physical, data link, interent, transport, application
- HTTP
- hypertext transport protocol
- HTTP is the
- protocol used btwn browsers and webservers
- HTTPS
- a secure version of HTTP
- web servers
- programs that run on a server tier computer that manage HTTP traffic by sending and reciecing web pages to and from clients
- lan contains
- switch nic, wireless, access point, wireless nic
- wan contains
- dsl modem, cable, wireless, telepohne line
- 3 important functions of an ISP
- gives internet address, serves as your gateway to the internet,pay for the internet, communicatio btwn computer and internet
- DSL
- digital subscriber line
- asymmetric digital subscriber line
- dsl lines that have diffferent upload and download speeds.... ADSL recieve more data then they transmit
- SYMMETRIC DIGITAL SUBSCRIVER LINES
- SDSL- offer the same fast speed in both directions
- cable modems
- provide high speed data transmission using cable television lines
- TCP/IP protocol architecture
- protocols used on the internet are arranged according to this structure....5 protocol types arranged in layers... application, transport, internet, data link, physical
- hypertext transport protocol
- protocol used btween browsers and web servers
- safe version of http
- https, used to tranfer credit card info
- FTP
- file transfer protocol, used to move files over the itnernet
- SMTP
- simple mail transfer protocol, used for email transmissions
- web
- internet based network of browsers and servers that process HTTP or HTTPS
- router
- a special purpose computer that moves packet traffic according to the rules of Ip
- packet
- a piece of a message that is handeled by programs that impletment IP
- IP address
- a number that identifies a particular devie
- publc ip address
- identifies particular device on the publc internet, must be unique worldwide,controlled by ICANN
- private adress
- identify a particular device on a private network, usually a LAN
- domain name
- unique name affiliated with public address
- URL
- uniform resource locator
- URL is an address on the internet
- .
- three tier archicture
- user tier-computers, phones..(request and prcess web pages)
- database tier
- compuers that run a DMBS that process SWL requests to retrieve and store data
- WEB server
- programs that run on a server tier computer, manage HTTP traffic by sending and recieving web pges to and from clients
- commerce server
- an application program that runs on a server tier computer, recieves requests from users via the web server, takes some action, and returns response to the usersvia the web server
- HTML
- hypertext markup language, the most common language for defining the struture and layout of web pages
- hyperlink
- pointers to other web pages
- XML
- extensible markup, fixes several HTML deficiencies, program to program interaction over webq
- HTML 5.0
- new version of html supports animation, movies, and graphics
- virtual private network
- uses internet or private network to create appearance of point to point connections, uses public internet to create appearance of private network