Business Networks Chapter 10 edit
Most end-office switches are Class ________ switches.
5
Many "T1" lines that carriers provide today use ________ in the local loop.
A) 1-pair voice-grade UTP
Today's dominant cellular technology is ________.
A) LTE
A customer's leased line to its ISP connects to the ISP's ________.
A) POP
In caching, ________.
A) a message may not have to be transmitted
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 service typically is ________.
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
MPLS ________ the work that each router must do to deliver a packet during a traffic exchange.
A) reduces
Fiber to the home service is normally created by ________.
A) running optical fiber to neighborhoods
Cells are used in cellular telephony to provide ________.
A) service for more customers
In SDN, a switch receives its forwarding table rules directly from ________.
A) the SDN controller
Control functions are located in routers in ________.
A) traditional routing
MPLS is ________ the source and destination hosts.
A) transparent to
T1 leased lines run at a speed of about ________.
B) 1 Mbps
Which of the following already runs to nearly all customer premises?
B) 1-pair VG UTP
How do WAN carriers typically get their trunk lines?
B) They lease them from telephone companies.
A router's load-balancing process is determined by ________.
B) an SDN application
DSL residential service provides ________.
B) asymmetric speed
In MPLS, the router interface to send the packet back out will be decided ________.
B) before the packet arrives
To connect two sites at 2.8 Mbps, I would use ________.
B) bonded T1 lines
Which of the following DSL services usually offers QoS guarantees?
B) business
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 router
MPLS routers base their decisions on a packet's ________.
B) label number
OpenFlow can be used to standardize ________.
B) southbound APIs
What speed does the LTE Advanced standard require downstream?
C) 3 Gbps
To use a leased line, the customer requires a(n) ________ at each site.
C) CSU/DSU
In a PSDN, customers connect to the network core at ________.
C) POPs
An MTSO ________.
C) both A and B
DSL offers ________.
C) both A and B
Forwarding functions are located in routers in ________.
C) both A and B
In ADSL, the customer should have ________.
C) both A and B
Traffic shaping ________.
C) both A and B
WAN optimization provides ________.
C) both A and B
Which of the following affects what throughput an individual user will receive?
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?
C) both A and B
For their transmission medium, cable television companies primarily use ________.
C) coaxial cable
In MPLS, the packet travels along the ________.
C) label-switched path
The PSTN core is organized as a ________.
C) modified hierarchy
What transmission medium do ALL DSL services use?
C) one-pair voice-grade UTP
Label-switching routers bring ________.
D) all of the above
In the telephone system, the lines that connect customers to the nearest switch are called the ________.
D) local loop
