Chapter 10
The Internet
True-False Questions
The following are possible True/False questions for tests. The statement is given and the answer
is provided. The level of difficulty (easy, medium, hard) and the section(s) relevant to the topic
are also furnished.
1.
The Internet is one large network.
2.
The Internet is flat in structure.
3.
Tier 1 service providers connect together and exchange data at IXPs.
4.
IXPs were originally designed to connect only tier 3 ISPs.
5.
Peering means that a tier 1 ISP does not charge another tier 1 ISP to transmit its messages.
6.
A point of presence is the place at which the ISP provides services to its customers.
7.
Technologies such as DSL and cable modem are called narrowband technologies.
8.
Digital Subscriber Line is a family of multipoint technologies.
Answer: False
9.
To use DSL, a customer needs a DSL Access Multiplexer installed at his or her location.
Answer: False
10.
Another term for a DSL modem is a DSL brouter.
Answer: False
11.
DSL uses a remote loop to connect homes to the telephone company end office.
Answer: False
12.
The most common type of DSL today is ADSL.
13.
The most common cable modem standard is Data over Cable Service Interface Specification.
Answer: True
14.
The device similar to a DSL router, but used in a FTTH environment is called an optical unit
network.
15.
A distribution hub includes a combiner and a Cable modem termination system.
16.
In a DSL environment, the line splitter and DSL modem are always two separate devices.
17.
WiMAX is an older wireless technology that probably won’t be used much longer.
18.
IBM recently developed a new WiMAX chip set.
19.
The Internet Engineering Steering Group provides strategic architectural oversight for the
Internet.
20.
Internet 2 is the common name for the Abilene network.
21.
Each of the networks in Internet 2 has a set of access points called terapops.
Answer: False
MULTIPLE CHOICE
The following are possible multiple-choice questions for tests. The question is posed and the
answer is provided under the choices. The level of difficulty (easy, medium, hard) and the
section(s) relevant to the topic is also furnished.
1.
At the top of the Internet structure are tier 1 ___________, such as AT&T and Sprint.
a. Network Access Points
b. Internet service providers
c. bridges
d. LATAs
e. digital subscriber lines
2.
Tier 1 ISPs connect together and exchange data at ___________.
a. IXPs
b. cable modem termination system endpoints
c. distribution hubs
d. the Internet engineering task force headquarters
e. the Internet Society network center
3.
__________ has led to the belief that the Internet is “free”.
a. Encrypting
b. Peering
c. Bridging
d. Tolling
e. Polling
4.
___________ refers to the fact that ISPs do not charge one another (at the same level) for
transferring messages they exchange across an NAP or MAE.
a. Popping
b. Peering
c. Yiping
d. Napping
e. Chargebacking
5.
A _________ is the place at which the ISP provides services to its customers.
a. remote access point
b. network access point
c. cable modem termination system endpoint
d. point-of-presence
e. metropolitan area exchange
6.
In general, tier 3 ISPs make money by charging ________.
a. customers
b. ICANN
c. UCAID
d. the DSLAM
e. CSUs/DSUs
7.
A ___________ is used by ISPs to authenticate its customers.
a. password server
b. remote-access server.
c. file server
d. WAP server.
e. Web server
8.
Which of the following is one of the tier 1 ISPs in North America?
a. IETF
b. IEEE
c. IAB
d. Sprint
e. ISOC
9.
Technologies that provide higher-speed communications than traditional modems (e.g., DSL)
are known as ______________ technologies.
a. middleband
b. narrowband
c. rubberband
d. metalband
e. broadband
10.
Digital _________ Line is a family of point-to-point technologies designed to provide high-
speed data transmission over traditional telephone lines.
a. System
b. Satisfaction
c. Speedy
d. Subscriber
e. Switch
Answer: D
11.
For access to DSL, __________ equipment is installed at the customer location.
a. point-of-presence
b. satellite dish
c. customer premises
d. metropolitan area exchange
e. network access point
Answer: C
12.
A __________ separates traditional voice telephone transmission from the data transmissions
in the equipment located at the customer site for DSL.
a. line splitter
b. V.32bis modem
c. line analyzer
d. main distribution frame
e. network access point
13.
Data traffic from the customers premises is sent to a __________ which is located at the
local carrier’s end office.
a. modem
b. codec
c. DSLAM
d. NIC
e. ATM
14.
The _________ is the connection from a home or business to the telephone company end
office.
a. distribution hub
b. RFC
c. UCAID
d. local loop
e. CA*net 3
15.
A DSL modem is also known as a:
a. DSL bridge
b. DSL brouter
c. DSL router
d. DSL gateway
e. DSL hub
16.
At the DSL local carrier’s office, the __________ demultiplexes the data streams and
converts them into ATM data.
a. DSLAM
b. GrandSlam
c. WAP
d. line splitter
e. X.25 PAD
17.
Most WiMAX providers in the US are using an effective data range of
a. 0.5 to 1.5 miles
b. 3-10 miles
c. 1-3 miles
d. 0.5-50 miles
e. 1-5 miles
18.
Peering has led to the emergence of a new organization type called the _______, which
permits any ISP to connect to its network.
a. gigapop
b. autonomous system
c. ISP
d. IXP
e. Service provider
19.
At the DSL customer premises is a device called a(n)
a. cable modem
b. DSL router
c. DSL modem
d. Internet router
e. DSL bridge
20.
Which of the following statements is true?
a. On a circuit, the shorter the distance, the higher the speed.
b. On a circuit, the longer the distance, the higher the speed.
c. On a circuit, the longer the distance, less attenuation occurs.
d. On a circuit, the shorter the distance, more attenuation occurs.
e. When more attenuation occurs, higher frequency signals can be used effectively.
21.
A digital service offered by cable companies is the _________.
a. Abilene network
b. WAP proxy
c. G.Lite ADSL
d. cable modem
e. Next Generation Internet
22.
Another term for cable networks that use both fiber-optic and coaxial cable is __________.
a. fixed wireless
b. mobile wireless
c. distribution hub
d. hybrid fiber coax
e. fibrax
23.
A T1 level of ADSL has a maximum downstream rate of about _________ Mbps.
a. 9000
b. 8.4
c. 1.5
d. 650
e. 6.1
24.
A headend is also referred to as a:
a. Abilene network
b. WAP proxy
c. cable modem
d. distribution hub
e. fiber node
25.
In a DSL environment, local loops from many customers enter and are connected to the
a. central office
b. computer center
c. main central office
d. main distribution center
e. rack
26.
A(n) __________ is used to connect a fiber optic cable from the cable TV company side to a
coaxial cable on the customer side.
a. CA*net 3
b. RFC
c. WAP proxy
d. fixed wireless connection
e. optical-electrical converter
27.
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.
a. Internet steering system
b. optical-electrical converter
c. WAP proxy
d. cable modem termination system
e. fixed wireless system
28.
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.
a. modem
b. router
c. bridge
d. combiner
e. CMTS
29.
The maximum download data rate for cable modem systems is currently
a. 1 Mbps
b. 1.44 Mbps
c. 5 Mbps
d. 100 Mbps
e. 150 Mbps
30.
Fiber to the Home uses
a. frequency division multiplexing
b. wavelength division multiplexing
c. time division multiplexing
d. statistical time division multiplexing
e. all of the above
31.
WiMax was designed to easily connect into existing ___________.
a. wide area networks
b. backbone networks
c. Ethernet LANs
d. ATM backbones
e. FTTH
32.
WiMAX was designed to use the _______ frequencies.
a. 2.3 GHz and 3.1 GHz
b. 2.4 GHz and 5 GHz
c. 2.3 GHz, 2.5 GHz, and 3.5 GHZ
d. 1.44 GHz, 2.4 GHz, and 5 GHz
e. any frequency between 2.3 GHz and 3.5 GHz
33.
The closest the Internet has to an “owning” organization is the ___________.
a. Internet Service Provider
b. Abilene network
c. CA*Net3
d. University Corporation for Advanced Internet Development
e. Internet Society
34.
Which of the following is not part of the work of the Internet Society?
a. public policy
b. connecting optical-electrical converters
c. education
d. development of Internet standards
e. maintenance of Internet standards
35.
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.
a. Internet Society
b. Internet Engineering Task Force
c. Internet Engineering Steering Committee
d. Internet Architecture Board
e. Internet Research Task Force
36.
The ___________ is responsible for technical management of IETF and the Internet
standards process.
a. Internet Society
b. University Corporation for Advanced Internet Development
c. Internet Engineering Steering Committee
d. Internet Architecture Board
e. Internet Research Task Force
37.
The _________operates like the IETF through small research groups focused on specific
issues.
a. Internet Society
b. University Corporation for Advanced Internet Development
c. Internet Engineering Steering Committee
d. Internet Architecture Board
e. Internet Research Task Force
38.
In 1996, The National Science foundation provided $100 million to start the ___________
program to develop the very-high-performance Backbone Network Service.
a. CA*Net3
b. UCAID
c. Next Generation Internet
d. Internet 3
e. WAP proxy
L.O.: Understand the overall design of the Internet
39.
Which of the following new Internet efforts was started by 34 universities?
a. CA*net 3
b. ARDNOC
c. vBNS
d. NGI
e. Internet2
40.
A high-speed Internet has a set of access points called ____pops that provide point-of-
presence at ________ speeds.
a. giga, gigabit
b. mega, megabit
c. multi, multibit
d. giga, megabit
e. multi, gigabit
L.O.: Be familiar with possible future directions of the Internet
41.
Some of the new applications being developed for a high-speed Internet include
a.) Tele-immersion
b.) Tele-conferencing
c.) QoS
d.) Broadband
e.) Tele-phoning
42.
Internet2® is an organization of about _____ universities, corporations, government
agencies, and organizations.
a. 100
b. 250
c. 400
d. 750
Short Answer and Essay Questions:
1. What is the basic structure of the Internet?
2. Draw a picture that describes the peering arrangements, and explores the concept
that the Internet is a network of networks.
3. Explain why you might have to wait a long time to get a web page from a server
in your own city.
4. Draw a chart with the headings of 1. Internet access type, 2. How Internet
Access Type works, 3. Analysis of Internet Access type. Then, proceed to fill
out the chart for DSL and Cable Modem.
5. Do you think cable modem or DSL service is better? Why?
6. Which will be the technology of the Internet in five years? Why? Defend your
answer.
7. What is Internet 2?
8. What are the principal organizations responsible for the governance of the
Internet and what do these groups do?
9. What are some future technologies that might change how we access the Internet?
10. Describe how WiMAX works.
11. Why is FTTH such a good option if it is available in your area?