ENSA Module 7 -- Traditional vs Modern WANS

Traditional WAN Connectivity

• T1, T3

• Dedicated Leased Line

• POTS, PSTN, ISDN

• Packet-Switched

• Frame Relay, ATM

• Circuit-Switched (phone lines)

Which of the following are packet switched WAN connectivity options?

• Ethernet WAN

• DSL

• PSTN

• Cable

• Cellular

Which describe DSL Internet?

• high-speed dedicated phone line

• requires a PPPoE client

• local loop is not shared

• local loop is shared

• high-speed coaxial cable

Which describe Cable Internet?

• high-speed dedicated phone line

• requires a PPPoE client

• local loop is not shared

• local loop is shared

• high-speed coaxial cable

Which describe Cable Internet?

• CO has a CMTS

• CO has a DSLAM

• Can be deployed as an HFC network

• has a symetric and asymmetric option

• all local subscribers share the bandwidth

Which describe DSL Internet?

• CO has a CMTS

• CO has a DSLAM

• Can be deployed as an HFC network

• has a symetric and asymmetric option

• all local subscribers share the bandwidth

(FTTx) Fiber to the . . .

• building

• FFTN

• home

• FTTH

• neighborhood

• FFTB

Wireless Broadband Internet Options

• 802.16 replaced by cellular

• Cellular

• LTE

• Municipal Wi-Fi

• slow and expensive

• Satellite

• provided by a city

• WiMAX