Chapter 10

Front 1

IXPs were originally designed to connect only tier 3 ISPs.

Back 1

False- Tier 1 ISPs

Front 2

Internet2® is an organization of about _____ universities, corporations, government agencies, and organizations.

Back 2

400

Front 3

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.

Back 3

Cable modem termination system

Front 4

WiMAX was designed to use the _______ frequencies.

Back 4

2.3 GHz, 2.5 GHz, and 3.5 GHZ

Front 5

A point of presence is the place at which the ISP provides services to its customers.

Back 5

True

Front 6

The maximum download data rate for cable modem systems is currently

Back 6

150 Mbps

Front 7

A distribution hub includes a combiner and a Cable modem termination system.

Back 7

True

Front 8

At the DSL local carrier's office, the __________ demultiplexes the data streams and converts them into ATM data.

Back 8

DSLAM

Front 9

The closest the Internet has to an "owning" organization is the ___________.

Back 9

Internet Society

Front 10

Another term for cable networks that use both fiber-optic and coaxial cable is __________.

Back 10

hybrid fiber coax

Front 11

Which of the following is not part of the work of the Internet Society?

Back 11

connecting optical-electrical converters

Front 12

Digital _________ Line is a family of point-to-point technologies designed to provide high-speed data transmission over traditional telephone lines.

Back 12

Subscriber

Front 13

At the top of the Internet structure are tier 1 ___________, such as AT&T and Sprint.

Back 13

Internet service providers

Front 14

Digital Subscriber Line is a family of multipoint technologies.

Back 14

False

Front 15

In a DSL environment, the line splitter and DSL modem are always two separate devices.

Back 15

False

Front 16

In a DSL environment, local loops from many customers enter and are connected to the

Back 16

main distribution center

Front 17

Which of the following statements is true?

Back 17

On a circuit, the shorter the distance, the higher the speed.

Front 18

A _________ is the place at which the ISP provides services to its customers.

Back 18

point-of-presence

Front 19

A digital service offered by cable companies is the _________.

Back 19

cable modem

Front 20

Each of the networks in Internet 2 has a set of access points called terapops.

Back 20

False gigapops

Front 21

Another term for a DSL modem is a DSL brouter.

Back 21

False

Front 22

At the DSL customer premises is a device called a(n)

Back 22

DSL modem

Front 23

__________ has led to the belief that the Internet is "free".

Back 23

Peering

Front 24

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.

Back 24

Internet Engineering Task Force

Front 25

The most common type of DSL today is ADSL.

Back 25

True

Front 26

IBM recently developed a new WiMAX chip set.

Back 26

False-Intel

Front 27

The Internet Engineering Steering Group provides strategic architectural oversight for the Internet.

Back 27

False

Front 28

Most WiMAX providers in the US are using an effective data range of

Back 28

0.5 to 1.5 miles

Front 29

The Internet is flat in structure.

Back 29

False

Front 30

A ___________ is used by ISPs to authenticate its customers.

Back 30

remote-access server

Front 31

WiMax was designed to easily connect into existing ___________.

Back 31

Ethernet LANs

Front 32

A T1 level of ADSL has a maximum downstream rate of about _________ Mbps.

Back 32

1.5

Front 33

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.

Back 33

combiner

Front 34

Internet 2 is the common name for the Abilene network.

Back 34

True

Front 35

Tier 1 service providers connect together and exchange data at IXPs.

Back 35

True

Front 36

A(n) __________ is used to connect a fiber optic cable from the cable TV company side to a coaxial cable on the customer side.

Back 36

optical-electrical converter

Front 37

Which of the following new Internet efforts was started by 34 universities?

Back 37

Internet2

Front 38

The most common cable modem standard is Data over Cable Service Interface Specification.

Back 38

True

Front 39

The _________ is the connection from a home or business to the telephone company end office.

Back 39

local loop

Front 40

Data traffic from the customers premises is sent to a __________ which is located at the local carrier's end office.

Back 40

DSLAM

Front 41

A headend is also referred to as a:

Back 41

distribution hub

Front 42

A __________ separates traditional voice telephone transmission from the data transmissions in the equipment located at the customer site for DSL.

Back 42

line splitter

Front 43

Technologies such as DSL and cable modem are called narrowband technologies.

Back 43

False

Front 44

A high-speed Internet has a set of access points called ____pops that provide point-of-presence at ________ speeds.

Back 44

giga, gigabit

Front 45

Which of the following is one of the tier 1 ISPs in North America?

Back 45

Sprint

Front 46

For access to DSL, __________ equipment is installed at the customer location.

Back 46

customer premises

Front 47

A DSL modem is also known as a:

Back 47

DSL router

Front 48

Tier 1 ISPs connect together and exchange data at ___________.

Back 48

IXPs

Front 49

Peering means that a tier 1 ISP does not charge another tier 1 ISP to transmit its messages.

Back 49

True

Front 50

The _________operates like the IETF through small research groups focused on specific issues.

Back 50

Internet Research Task Force