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50 Cards in this Set
- Front
- Back
IXPs were originally designed to connect only tier 3 ISPs. |
False- Tier 1 ISPs |
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Internet2® is an organization of about _____ universities, corporations, government agencies, and organizations. |
400 |
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A(n) ___________ contains a series of cable modems/multiplexers and converts the data from cable modem protocols into protocols needed for Internet traffic, before passing them to a router connected to an ISP POP. |
Cable modem termination system |
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WiMAX was designed to use the _______ frequencies. |
2.3 GHz, 2.5 GHz, and 3.5 GHZ |
|
A point of presence is the place at which the ISP provides services to its customers. |
True |
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The maximum download data rate for cable modem systems is currently |
150 Mbps |
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A distribution hub includes a combiner and a Cable modem termination system. |
True |
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At the DSL local carrier's office, the __________ demultiplexes the data streams and converts them into ATM data. |
DSLAM |
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The closest the Internet has to an "owning" organization is the ___________. |
Internet Society |
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Another term for cable networks that use both fiber-optic and coaxial cable is __________. |
hybrid fiber coax |
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Which of the following is not part of the work of the Internet Society? |
connecting optical-electrical converters |
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Digital _________ Line is a family of point-to-point technologies designed to provide high-speed data transmission over traditional telephone lines. |
Subscriber |
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At the top of the Internet structure are tier 1 ___________, such as AT&T and Sprint. |
Internet service providers |
|
Digital Subscriber Line is a family of multipoint technologies. |
False |
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In a DSL environment, the line splitter and DSL modem are always two separate devices. |
False |
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In a DSL environment, local loops from many customers enter and are connected to the |
main distribution center |
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Which of the following statements is true? |
On a circuit, the shorter the distance, the higher the speed. |
|
A _________ is the place at which the ISP provides services to its customers. |
point-of-presence |
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A digital service offered by cable companies is the _________. |
cable modem |
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Each of the networks in Internet 2 has a set of access points called terapops. |
False gigapops |
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Another term for a DSL modem is a DSL brouter. |
False |
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At the DSL customer premises is a device called a(n) |
DSL modem |
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__________ has led to the belief that the Internet is "free". |
Peering |
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The ________ is a large open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and smooth operation of the Internet. |
Internet Engineering Task Force |
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The most common type of DSL today is ADSL. |
True |
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IBM recently developed a new WiMAX chip set. |
False-Intel |
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The Internet Engineering Steering Group provides strategic architectural oversight for the Internet. |
False |
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Most WiMAX providers in the US are using an effective data range of |
0.5 to 1.5 miles |
|
The Internet is flat in structure. |
False |
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A ___________ is used by ISPs to authenticate its customers. |
remote-access server |
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WiMax was designed to easily connect into existing ___________. |
Ethernet LANs |
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A T1 level of ADSL has a maximum downstream rate of about _________ Mbps. |
1.5 |
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In a cable modem environment, a _______ is used to combine Internet data traffic with ordinary TV video traffic and then send it back to the fiber node for distribution. |
combiner |
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Internet 2 is the common name for the Abilene network. |
True |
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Tier 1 service providers connect together and exchange data at IXPs. |
True |
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A(n) __________ is used to connect a fiber optic cable from the cable TV company side to a coaxial cable on the customer side. |
optical-electrical converter |
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Which of the following new Internet efforts was started by 34 universities? |
Internet2 |
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The most common cable modem standard is Data over Cable Service Interface Specification. |
True |
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The _________ is the connection from a home or business to the telephone company end office. |
local loop |
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Data traffic from the customers premises is sent to a __________ which is located at the local carrier's end office. |
DSLAM |
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A headend is also referred to as a: |
distribution hub |
|
A __________ separates traditional voice telephone transmission from the data transmissions in the equipment located at the customer site for DSL. |
line splitter |
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Technologies such as DSL and cable modem are called narrowband technologies. |
False |
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A high-speed Internet has a set of access points called ____pops that provide point-of-presence at ________ speeds. |
giga, gigabit |
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Which of the following is one of the tier 1 ISPs in North America? |
Sprint |
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For access to DSL, __________ equipment is installed at the customer location. |
customer premises |
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A DSL modem is also known as a: |
DSL router |
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Tier 1 ISPs connect together and exchange data at ___________. |
IXPs |
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Peering means that a tier 1 ISP does not charge another tier 1 ISP to transmit its messages. |
True |
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The _________operates like the IETF through small research groups focused on specific issues. |
Internet Research Task Force |