WAN Technologies Flashcards
- When data is sent across a network, it is not sent as one large piece. The data is actually divided into smaller pieces or data packets, and then they are sent individually.
- These data packets are sent using two different methods:
packet switching and circuit switching.
(packet switching) - In packet switching, the data packets take _________ routes to their destination, and once all the data packets reach their destination, they are recompiled into the original _______.
- This method of communication is also known as ____________.
different, message, connectionless
(packet switching) The _______ mostly uses packet switching technology.
internet
(circuit switching) circuit switching, all the data is sent along the same __________ _____.
dedicated route
(circuit switching) A good example of circuit switching would be _________ _____.
telephone lines
(ISDN) ISDN stands for _________ ________ _______ ________.
- This is an international standard for digital transmission over ordinary telephone lines.
Integrated, Services, Digital, Network
(ISDN) In order to use ISDN, users had to ______ ISDN modems.
install
(ISDN) This was a significant improvement in ______ over the standard modem because a standard modem sends data at a maximum speed of __ kbps
speed, 56 kbps
(ISDN) ISDN sends data at ___ kbps
128 kbps
(ISDN) ISDN never really caught on because of the faster speeds of ___ and _____.
DSL, cable
T1 stands for?
T Carrier Level 1
(T1) T1 lines are probably the most commonly used _________ _______ for businesses today.
internet service
(T1) It’s a dedicated connection that supports data rates of _.___ megabits per second.
1.544 mbps
(T1) A T1 line consists of __ individual channels that each carries a rate of __ kbps. Each of these channels can carry ____ or voice traffic.
24, 64, data
T3 stands for?
T carrier level 3
(T3) A T3 line is a ____-_____ internet connection
high, speed
(T3) Supports rates of __ megabits per second.
43 mbps
(T3) It consists of ___ individual channels, and each of these carries a rate of __ kbps.
672, 64 kbps
(T3) T3 lines are mainly used by internet service providers that connect directly to the ________ of the _________.
backbone, internet
(E1) An E1 line is similar to a T1 line, but an E1 line is the format that is used in Europe for _______ ___________.
digital, transmission
(E1) The speed is __ megabits per second and consists of __ channels that carry __ kbps of data.
2 mbps, 32, 64 kbps
(E3) An E3 line is the ________ equivalent of a T3 line. It has a speed of __ megabits per second and has _____ channels than a T3 line.
European, 34 mbps, fewer
(OCx) OCx stands for _______ ______.
Optical, Carrier
(OCx) These are levels that describe the speed of networks that can be carried on SONET, which stands for ___________ ______ ________.
Synchronous, Optical, Network
(OCx) It’s a fiber optic technology that delivers voice, data, and video at ____ ______.
high, speeds
(OCx) The OC levels are calculated by multiples of __.__ megabits per second.
51.84 mbps
