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Chapter: 3
104. When would you install ISDN?
A. When you need high data speed B. When you need voice capability on your WAN
C. When you want to upgrade your X.25 network
D. When you need streaming video to all desktops Answer: A, B
ISDN can be used for voice, and data using digital signaling over regular voice grade circuits.
Chapter: 3
105. When would ISDN be a good solution?
A. When you need to have a PVC B. When you need to route multiple protocols
C. When you need LAN and Internet access at fast speeds with burstable traffic
D. When you have dozens of buildings to connect together
Answer: C
Cisco calls ISDN fast. ISDN is great to connect small remote office to the main office for LAN and Internet
access. If you have dozens of buildings to connect, Frame Relay would be a better solution.
Chapter: 3
106. What is true about Cisco ISDN?
(Choose all that apply)
A. Provides multiprotocol support
B. Uses multiple bearer channels C. Has speeds up to 3 Mbps
D. Uses bandwidth on demand
Answer: A, B, D
ISDN with Cisco routers can use multi-protocols, with multiple bearer channels and bandwidth on demand with speeds up to around 2Mbps.
Chapter: 3
107. What encapsulations are used with ISDN?