False |
WANs connect nodes, such as workstations, servers, printers, and other devices, in a small geographical area on a single network. |
True |
A bus topology WAN is often the best option for an organization with only a few sites and the capability to use dedicated circuits. |
True |
The carrier's endpoint on a WAN is called the Data Communications Equipment (DCE). |
False |
T-1 cables cannot utilize straight through cables using the same wiring scheme as LAN patch cables. |
True |
In a PON setup, the system is considered passive because no repeaters or other devices intervene between the carrier and the customer. |
ring topology |
In what type of topology is each site connected to two other sites, providing redundancy? |
44.736 |
What is the maximum throughput of a DS3 connection? |
24 |
How many channels exist in a T1 connection? |
64 Kbps |
In an ISDN connection, what is the size throughput did a single B channel provide? |
32 |
In a PON system, an OLT contains a splitter that splits each port into how many logical channels? |
53 bytes |
What is the size of an ATM packet? |
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? |
ADSL |
What xDSL standard is the most popular? |
ADSL |
What version of xDSL is the most popular? |
CSU/DSU |
The DTE or endpoint device for a leased line is known as which device below? |
OC-48 |
What OC level is primarily used as a regional ISP backbone, and occasionally by very large hospitals, universities, or other major enterprises? |
622.08 Mbps |
What is the maximum amount of throughput provided by an OC-12? |
3.4 - 6.7 GHz |
What is the frequency range of the C-band that is used by satellites? |
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? |
MLPPP |
What protocol is commonly used to aggregate / bond T-1 / T-3 lines? |
RJ-48 |
When copper cabling is used to carry T-1 traffic, what kind of connector is used? |
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? |
DOCSIS 3 |
Which version of DOCSIS provides 38 Mbps per channel and requires a minimum of 4 channels to be used? |
1/4 mile |
The best 802.11n signal can travel approximately how far? |
Carrier Ethernet Transport |
In metro settings, end-to-end, carrier-grade Ethernet networks can be established via what protocol? |
Ethernet MAN Metro Ethernet |
A MAN connection is also known as which two terms below? |
GSM CDMA |
What two competing standards exist for cell phone networks? |
ATM frame relay |
What two network protocols below rely on virtual circuits? |
PVC SVC |
Frame relay relies on what two different types of virtual circuits? |
Layer 2 Layer 1 |
At what two layers of the OSI model are LAN and WAN protocols likely to differ? |
Data Terminal Console (DTC) |
The customer's endpoint device on the WAN is called the __________________. |
T-1 |
Multiplexing enables a single ____________ circuit to carry 24 channels, each capable of 64 Kbps throughput. |
Optical Networking Unit (ONU) |
The ________________ distributes signals to multiple endpoints via fiber-optic cable, in the case of FTTP, or via copper or coax cable. |
cell |
In ATM, a packet is called a _____________ and always consists of 48 bytes of data plus a 5 byte header. |