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Layer 3 |
What is the lowest layer of the OSI model at which LANs and WANs support the same protocols? |
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Dedicated line, virtual circuit |
An organization can lease a private, _________________ that is not shared with other users, or a _________________ that can be physically configured over shared lines in the carrier’s cloud. |
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Mesh topology |
Which WAN topology always sends data directly from its origin to its destination? |
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MLP |
What protocol is used to bond multiple T-1s? |
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Smart jack |
What kind of device can monitor a connection at the demarc but cannot interpret data? |
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DOCSIS |
What specification defined the standards for broadband cable? |
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Ethernet over power line |
What technology allows a user to access the Internet through the wiring of a home? |
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OC levels, digital signal levels |
______________ in SONET are analogous to the ________________ of T-carriers. |
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802.16 |
What IEEE committee established WiMAX technologies? |
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Throttling |
What method do ISPs use to purposely slow down bandwidth utilization by customers? |
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ring topology |
In what type of topology is each site connected to two other sites, providing redundancy? |
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-44.736 |
What is the maximum throughput of a DS3 connection? |
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-24 |
How many channels exist in a T1 connection? |
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64 Kbps |
In an ISDN connection, what is the size throughput did a single B channel provide? |
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-32 |
In a PON system, an OLT contains a splitter that splits each port into how many logical channels? |
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-53 bytes |
What is the size of an ATM packet? |
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-You pay only for the bandwidth you’ve used. |
Which option below is an advantage of leasing a frame relay circuit over leasing a dedicated circuit? |
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-ADSL |
What xDSL standard is the most popular? |
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ADSL |
What version of xDSL is the most popular? |
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-CSU/DSU |
The DTE or endpoint device for a leased line is known as which device below? |
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-OC-48 |
What OC level is primarily used as a regional ISP backbone, and occasionally by very large hospitals, universities, or other major enterprises? |
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-622.08 Mbps |
What is the maximum amount of throughput provided by an OC-12? |
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– 3.4 – 6.7 GHz |
What is the frequency range of the C-band that is used by satellites? |
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-split horizon |
What Layer 3 technology is employed by distance-vector routing protocols in which a router knows which of its interfaces a routing update and will not retransmit, or advertise, that same update on the same interface? |
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-MLPPP |
What protocol is commonly used to aggregate / bond T-1 / T-3 lines? |
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RJ-48 |
When copper cabling is used to carry T-1 traffic, what kind of connector is used? |
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-data link connection identifier |
When using frame relay, what is the name of the identifier that routers use to determine which circuit to send frames to? |
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-DOCSIS 3 |
Which version of DOCSIS provides 38 Mbps per channel and requires a minimum of 4 channels to be used? |
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-1/4 mile |
The best 802.11n signal can travel approximately how far? |
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-Carrier Ethernet Transport |
In metro settings, end-to-end, carrier-grade Ethernet networks can be established via what protocol? |
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