11. List four WAN technologies that are carried over the PSTN. 12. When copper c
ID: 3772766 • Letter: 1
Question
11. List four WAN technologies that are carried over the PSTN.
12. When copper cabling is used to carry T-1 traffic, what kind of connector is used?
13. What two types of virtual circuits does frame relay support?
14. What is the latest version of ADSL?
15. By what name is SONET known internationally?
16. What is the benchmark upstream throughput of 4G services for slow-moving mobile clients?
17. What technology added data services to the GSM standard?
18. What is the fastest wireless broadband service available in the United States?
19. Explain what geosynchronous earth orbit (GEO) is and what it accomplishes.
20. What type of device can loop the ISP ’ s signal back to the CO for testing?
Explanation / Answer
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11)
1.local loop (last mile)
2.NIU (network interface unit)
3.FTTP (fiber to the premises)
4.Passive optical network (PON)
12)
RJ-48 connector
13)
Switched Virtual Circuits and Permanent Virtual Circuits
14)
ADSL2+M
15)
(SDH) Synchronous Digital Hierarchy
16)
1 Gbps
17)
GPRS (General Packet Radio Services)
18)
LTE
19)
Geosynchronous earth orbit means that satellites orbit the Earth at the same rate as the Earth turns. Within each satellite band, frequencies used for uplink and downlink transmission differ to help ensure that signals traveling in one direction do not interfere with signals traveling in the other direction
20)
Smart jack
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