Business Networks Chapter 10 edit

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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


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