Which of the following describes the roles of devices in a WAN?
Asked by Anjali Katoch Last Modified
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Hello Anjali There would be many devices in a 'WAN' Network Topology performing functions from Layer-1 to Layer-3 at basic level and further Layers if additional services like security and QoS are needed. Layer-1 - Modems , CSU/DSU, Smart Jacks - These Terminate the ISP line at Customer End and help...
read more Hello Anjali There would be many devices in a 'WAN' Network Topology performing functions from Layer-1 to Layer-3 at basic level and further Layers if additional services like security and QoS are needed. Layer-1 - Modems , CSU/DSU, Smart Jacks - These Terminate the ISP line at Customer End and help troubleshooting issues like link failures or errors on links from ISP to Customer. Layer-2 - Most of the times these are not at Customer End, example Frame-Relay Switch at ISP. Layer- 3 Routers these are critical devices for routing traffic in and out of a WAN /LAN , making decisions based on Routing Information Table Learned Dynamically from Routing Protocols or Manually through Network Admin. I hope these have answered your question. read less
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A CSU/DSU terminates a digital local loop. A modem terminates an analog local loop. A router is commonly considered a DTE device.
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A CSU/DSU terminates a digital local loop. A router is commonly considered a DTE device. where FR is considered as DCE device.
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Shankar Banavasi
12 years of work experience with 5 years of Pedagogical(teaching) experience)
A gateway device can either be a router or switch. A layer-2 switch can be programmed to be used a router on layer 3 in order to reduce costs
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Sreejit Halder
6+ years of corporate experienced IT engineer having worked with top MNCs and handled 7 different big projects supporting Network operations, DataCentre Operations, Security oerations
switch, router, SAN devices etc
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