Term
| WAN operations focus primarily on what layers of the OSI model? |
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Definition
| Layer 1 and Layer 2 WAN access standards typically describe both physical layer delivery methods and data link layer requirements. |
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Term
| What is referred to by the "Local loop"? |
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Definition
| The copper or fiber cable that connects the CPE at the subscriber site to the central office of the service provider. |
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Term
| What is the demarcation point? |
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Definition
| The place where the responsibility for the connection changes from the user to the service provider. |
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Term
| What is the size of an ATM frame? |
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Definition
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Term
| What is the difference between a circuit switched network and a packet switched network? |
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Definition
Circuit switched networks establish a dedicated circuit between nodes and terminals before communication begins.
Packet switched networks splits traffic data into packets that are routed over a shared network. |
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Term
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Definition
| Point of Presence -- A service provider has a point of presence within the local environment. |
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Term
| What is the difference between PSTN and ISDN? |
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Definition
PSTN - Analog Signal
ISDN - Digital Signal |
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Term
| ISDN PRI has how many B channels in North America |
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Definition
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Term
| This technology is built on a cell based architecture... |
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Definition
| ATM - Asynchronous Transfer Mode |
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Term
| This technology operates at the network layer and the SVC is identified by a channel number. |
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Definition
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Term
| This Technology operates at the data link layer and the PVC is identified by the data link control identified DLCI. |
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Definition
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