POTS
FDDI
SONET
Cable modem
第1题：
A.POTS
B.FDDI
C.SONET
D.Cable modem
第2题：
Which of the following technologies can improve convergence time following a link failure in a serviceprovider network？（）
第3题：
A. Impact
B. Thermal
C. Laser
D. Inkjet
第4题：
Which of the following WAN protocols is a packet switching technology?（）
第5题：
TestKing has five regional offices that are located in different cities. The IT staff is evaluating WAN technologies to interconnect the regional offices to corporate headquarters. Each of the regional offices should be connected to the corporate headquarters in a hub and spoke arrangement using a packet-switched technology. Which of the following WAN technologies will fulfill these requirements?（）
第6题：
TestKing has five regional offices that are located in different cities. The IT staff is evaluating WAN technologies to interconnect the regional offices to corporate headquarters. Each of the regional offices should be connected to the corporate headquarters in a hub and spoke arrangement using a packet-switched technology.Which of the following WAN technologies will fulfill these requirements?（）
A. Frame Relay
B. ISDN
C. T1 leased lines
D. Wireless
第7题：
Which three WAN technologies does the Cisco SR 500 Family support？（）
第8题：
A. ISDN
B. DSL
C. Satellite
D. Cable
第9题：
Which of the following uses a ring topology?（）
第10题：
Which of the following memory technologies has the HIGHEST cost to implement？（）