MIS 3317 Chapter 10
Many lines sold as T1 lines actually use ________.
A) 1-pair voice-grade UTP
For cable modem service, customers need ________.
A) cable modems
Cells are used in cellular telephony to provide ________.
A) service for more customers
Asymmetric residential service is good for ________.
A) the World Wide Web
The Internet is a ________.
B) WAN
Decent data transmission for Web surfing began with ________ technology.
C) 3G
An MTSO ________. controls cellsites in a cellular system/links mobile users to wired telephone customers
C) both A and B
Compared to the Internet, Layer 2 and Layer 3 carrier WAN services usually ________. offer QoS guarantees/ require less management-labor in the customer organization
C) both A and B
DSL offers ________. voice transmission-data transmission
C) both A and B
Fiber to the home service is normally offered by ________. cable television companies-telephone companies
C) both A and B
How does carrier Ethernet differ from traditional Ethernet? It is offered by carriers instead of being installed and managed by the company using it./It is for MAN and WAN services.
C) both A and B
In ADSL, the customer should have ________. splitters-an ADSL modem.
C) both A and B
Which of the following is a common use for carrier WANs?
C) both A and B
Which of the following is moving toward FTTH? cable modem service companies/ADSL service companies
C) both A and B
Why is Carrier Ethernet popular? It uses a familiar technology./It is usually easy to upgrade speed rapidly.
C) both A and B
LANs are ________. single networks-local internets
C) either A or B
The PSTN core is organized as a ________.
C) modified hierarchy
Most end-office switches are Class ________ switches.
D) 5
Which of the following already runs to nearly all customer premises?
B) 1-pair VG UTP
DSL residential service provides ________.
B) asymmetric speed
Firms generally pay the added cost of MPLS for connecting their sites ________.
B) because it can do traffic engineering
Which reduces traffic more when sending long files?
B) caching
Which of the following allows you to connect to the hosts of almost any corporation today?
B) the Internet
Which generation is now bringing speeds of about 10 Mbps?
C) 4G
Many T1 lines are ________.
C) Symmetric DSL lines
5G will bring ________. higher speeds than 4G/energy-efficient low speeds
C) both A and B
In MPLS, the label-switched routers in the middle do not look at a packet's IP address.
TRUE
In Carrier Ethernet, which service is a competitor for leased line service?
A) E-Line
A network that runs on the customer premises is a ________.
A) LAN
Company has more control over its ________ technology.
A) LAN
Which of the following usually offers higher speeds?
A) LANs
A customer's leased line to its ISP connects to the ISP's ________.
A) POP
If you need speeds of 1.2 Mbps between two corporate sites in the United States, you would need a ________ leased line.
A) T1
For ADSL service, which of the following typically must be added to the telephone system?
A) a DSLAM
If a cellsite uses Channel 237, which other cellsites can reuse the channel?
A) adjacent cellsites
WAN optimization devices are deployed ________.
A) at the ends of leased lines
In cellular technology, a ________ is a small geographical area.
A) cell
Leased lines offer ________ service.
A) fast
Compared to ADSL service, cable modem traditionally has been ________.
A) faster and more expensive
The promise of FTTH is ________.
A) higher speed
Which lines run from one customer premise to another?
A) leased lines
A WAN is the network that ________.
A) links different sites together
Compared to the Internet, carrier WANs ________.
A) offer higher-quality service
MPLS ________ the work that each router must do to deliver a packet during a traffic exchange.
A) reduces
Compression reduces traffic by ________.
A) reducing redundancy in the data
MPLS is ________ the source and destination hosts.
A) transparent to
Why is Carrier Ethernet popular?
A) uses a familiar technology
T1 leased lines run at a speed of about ________.
B) 1 Mbps
In ADSL, the residential customer needs a(n) ________.
B) ADSL modem
Which of the following is the most expensive to use?
B) MPLS
Which spends less processing time on each packet arriving at a router?
B) MPLS
If you need speeds of 16 Mbps between two corporate sites in the United States, you would need a ________ leased line.
B) T3
How do WAN carriers typically get their trunk lines?
B) They lease them from telephone companies.
Which of the following has more diversity in technologies?
B) WANs
In MPLS, the router interface to send the packet back out will be decided ________.
B) before the first data packet is sent
Which of the following DSL services tends to be symmetric in speed?
B) business
Which of the following receive rights of way for transmission beyond sites?
B) carriers
In cellular technology, the carrier antenna and equipment to which mobile customers connect directly is called a(n) ________.
B) cellsite
Which of the following does the carrier NOT own?
B) customer premises equipment
Two-way amplifiers are needed for cable ________ service.
B) data
In MPLS, the ________ adds the label to the packet.
B) first label-switching route
MPLS routers base their decisions on a packet's ________.
B) label number
Traffic shaping reduces traffic by ________.
B) preventing or limiting undesirable traffic from entering the network
MPLS brings ________.
B) the ability to do traffic engineering
To use a leased line, the customer must have a(n) ________ at each site.
C) CSU/DSU
Traffic shaping reduces traffic by ________. preventing certain undesirable traffic from entering the network/limiting the amount of certain undesirable traffic entering the network
C) both A and B
Which of the following affects what cellular throughput an individual user will receive? being in a moving car/being far from the cellsite
C) both A and B
Which of the following can sometimes be accelerated by changing their operation? Application protocols/Network protocols
C) both A and B
Which of the following reduces traffic? compression/traffic shaping
C) both A and B
Why is Carrier Ethernet popular? It uses familiar technology./It has attractive prices.
C) both A and B
For their transmission medium, cable television companies primarily use ________.
C) coaxial cable
In MPLS, if two packets arrive in order going to the same IP address, MPLS will ________.
C) do a simple table lookup for the second packet
WANs include ________. single networks-the Internet
C) either A or B
What transmission medium do ALL DSL services use?
C) one-pair voice-grade UTP
LAN speeds are faster than WAN speeds because of ________.
D) economic reasons
MAN speeds are faster than WAN speeds because of ________.
D) economic reasons
In cellular technology, G stands for ________.
D) generation
In Carrier Ethernet, which connects multiple distant sites into a single Ethernet network? E-Line service/E-LAN service
D) neither A nor B
In coaxial cable, the two conductors ________. run side-by-side/are twisted around each other
D) neither A nor B
In a telephone system, the lines that connect customers to the nearest switch are called ________.
D) the local loop
When carriers use the terms "4G" and "5G," they use these terms in ways that comply with standards.
FALSE