Deck 11: Voice and Data Delivery Networks

Question 1

The more information you wish to send over a medium, the lower the frequency of the signal you need to represent that information.

Answer 1

False

Question 2

An asymmetric service is useful for an Internet connection in which the bulk of the traffic comes down from the Internet to the workstation.

Answer 2

True

Question 3

Only two wires are required to complete a telephone circuit.

Answer 3

True

Question 4

There is only one DSL format in use today.

Question 5

A trunk has a unique telephone number associated with it.

Question 6

The frame relay service can only be a long-distance service.

Question 7

When they were originally introduced many years ago, dial-up modems were capable of data transfer speeds of merely 15 to 30 bits per second.

Question 8

Cable modem connections are typically symmetric.

Question 9

A V.92 modem can place a data connection on hold should someone call the user's telephone number.

Question 10

Most residential DSL services are symmetric.

Question 11

Typically, frame relay is a replacement for the leased lines that connect a business to other businesses or connect multiple offices of the same business.

Question 12

Telephone systems were originally designed to transmit the human voice.

Question 13

It wasn't until the 1950s that POTS began carrying computer data signals as well as voice signals.

Question 14

Frame relay is called a layer 6 protocol.

Question 15

The Internet can transfer conventional data and voice data.

Question 16

Prior to 1984, AT&T (American Telephone and Telegraph) owned all the long-distance telephone lines in the United States.

Question 17

Subscriber loops usually transmit digital signals, which require amplifiers every few kilometers.

Question 18

The most popular example of a leased line service is the T-1.

Question 19

Quarter-T-1 and half-T-1 lines are called fractional T-1 services.

Question 20

A cable modem is a physical device that separates the computer data from the cable television video signal.

Question 21

A(n) ____ handles all in-house calls and places calls onto outside telephone lines.

A)local exchange carriers (LECs)
B)local access transport area (LATA)
C)interexchange carriers (IECs or IXCs)
D)private branch exchange (PBXs)

Question 22

Convergence has had a particularly noticeable impact on the telecommunications market.

Question 23

A company that wishes to have its own in-house telephone system will often buy or lease a PBX.

Question 24

The telephone network consists of two basic types of telephone lines: a subscriber loop, or standard telephone line, and a ____.

A)trunk
B)CIR
C)LATA
D)SONET

Question 25

Local high-speed telephone connections are almost always less expensive than long-distance, high-speed telephone connections.

Question 26

A real-time interactive application is one of the most demanding with respect to data transmission rate and network throughput.

Question 27

____ are permanent direct connections between two specified points.

A)Tie lines
B)PBXs
C)Centrex
D)IPX

Question 28

The local loop commonly consists of either four or ____ wires.

A)six
B)eight
C)nine
D)ten

Question 29

After the 1984's Modified Final Judgment, the long-distance telephone companies became known as ____.

A)local exchange carriers (LECs)
B)central office exchange service
C)interexchange carriers (IECs or IXCs)
D)private branch exchange (PBXs)

Question 30

DSL and cable modems are more expensive than frame relay systems at comparable speeds.

Question 31

If the telephone call passes out of one LATA and into another (a(n) ____ call), the telephone call is long distance and must be handled by a long-distance telephone company.

A)intraLATA
B)innerLATA
C)inLATA
D)interLATA

Question 32

ATM clearly dominates in the local area network arena.

Question 33

The price of the PVC is inversely proportional to the CIR level.

Question 34

On the other end of the local loop is the local telephone company's ____.

A)trunk
B)interLATA
C)central office
D)intraLATA

Question 35

MPLS on Internet routers and VPNs (virtual private networks) are gaining in popularity in the data network market.

Question 36

Frame relay and ATM are losing market share to Internet services such as FTP and Telnet.

Question 37

ATM transfer rates are as fast as 311 Mbps.

Question 38

As long as a telephone call remains within a LATA (a(n) ____ call), the telephone call is local and is handled by a local telephone company.

A)intraLATA
B)extraLATA
C)outerLATA
D)outLATA

Question 39

A(n) ____ is a service from local telephone companies in which up-to-date telephone facilities at the telephone company's central (local) office are offered to business users, so that they don't need to purchase their own facilities.

A)local exchange carriers (LECs)
B)central office exchange service
C)interexchange carriers (IECs or IXCs)
D)private branch exchange (PBXs)

Question 40

Frame relay was originally designed and used to transfer packets of data between two sites more cost effectively than leased lines could.

Question 41

Digital subscriber line comes in a variety of formats. Often collectively referred to as ____.

A)ADSL
B)CDSL
C)SDSL
D)xDSL

Question 42

____ is capable of sending traffic that may experience bursts of data, but there are no promises as to when the data may be sent.

A)Variable bit rate (VBR)
B)Available bit rate (ABR)
C)Unspecified bit rate (UBR)
D)Constant bit rate (CBR)

Question 43

____ applications often send bursts of data, and the ATM network guarantees that its traffic is delivered on time.

A)Variable bit rate (VBR)
B)Available bit rate (ABR)
C)Unspecified bit rate (UBR)
D)Constant bit rate (CBR)

Question 44

____ is a trademarked version of DSL with speeds that are a little slower than typical ADSL speeds.

A)Asymmetric digital subscriber line (ADSL)
B)DSL Lite
C)DirtCheap DSL (DDSL)
D)High bit-rate DSL (HDSL)

Question 45

A(n) ____ connection has a faster downstream transmission speed than its upstream speed.

A)symmetric
B)static
C)asymmetric
D)dynamic

Question 46

A ____ is a bundle of VCCs that have the same endpoints.

A)virtual path connection (VPC)
B)virtual interface connection (VIC)
C)network-network interface
D)network-user interface

Question 47

When no splitter is used to separate the DSL signal from the POTS signal, then the service is called ____.

A)asymmetric DSL
B)splitterless DSL
C)symmetric DSL
D)POTSless DSL

Question 48

____ is a popular format that transmits the downstream data at a faster rate than the upstream rate.

A)Asymmetric digital subscriber line (ADSL)
B)Consumer DSL (CDSL)
C)DSL Lite
D)High bit-rate DSL (HDSL)

Question 49

The designation layer ____ protocol means that frame relay technology is only one part of a network application and resides at the data link layer.

A)2
B)3
C)4
D)6

Question 50

When a VCC transmits network management and routing signals, it is called the ____.

A)virtual path connection (VPC)
B)virtual interface connection (VIC)
C)network-network interface
D)network-user interface

Question 51

____ is the most expensive ATM class of service.

A)Variable bit rate (VBR)
B)Available bit rate (ABR)
C)Unspecified bit rate (UBR)
D)Constant bit rate (CBR)

Question 52

Before ATM can transfer any data, you must first create a logical connection called a ____.

A)virtual path connection (VPC)
B)virtual channel connection (VCC)
C)network-network interface
D)network-user interface

Question 53

The Telecommunications Act of 1996 mandated that the existing local telephone companies, now called ____, must give CLECs access to their telephone lines.

A)private Branch Exchange (PBX)
B)Centrex (central office exchange service)
C)incumbent local exchange carriers (ILECs)
D)interexchange carriers (IECs)

Question 54

Because DSL is an always-on connection, it uses a ____ circuit instead of a switched circuit.

A)changing
B)dynamic
C)virtual
D)permanent

Question 55

A(n) ____ connection is one in which the transfer speeds in both directions are equal.

A)symmetric
B)asymmetric
C)static
D)dynamic

Question 56

When a customer establishes a permanent virtual circuit with a frame relay carrier, both customer and carrier agree on a data transfer rate called the ____.

A)bit rate
B)PVC rate
C)committed information rate (CIR)
D)LATA rate

Question 57

The ____ allows the customer to exceed the committed information rate by a fixed amount for brief moments of time.

A)bit rate
B)burst rate
C)committed information rate (CIR)
D)LATA rate

Question 58

____ is a packet-switched network that was designed for transmitting data over fixed lines.

A)T-1
B)IntraLATA
C)Frame relay
D)InterLATA

Question 59

The ____ standard is a 56,000-bps dial-up modem standard approved by a standards-making organization rather than a single company.

A)R.56
B)V.90
C)802.11Q
D)803.1

Question 60

A ____ service is an all-digital connection that can transfer either voice or data at speeds up to 1.544 Mbps.

A)T-1
B)T-2
C)T-3
D)T-4

Question 61

A(n) ____________________ does not have a telephone number associated with it, because it can carry hundreds of voice and data channels.

Question 62

____ means that different icons on a computer screen represent common PBX functions such as call hold, call transfer, and call conferencing, making the system easier for operators to use.

A)Third-party call control
B)PBX graphic user interface
C)Fax-back
D)Call filtering

Question 63

A(n) ___________________________________ is a geographic area such as a large metropolitan area or part of a large state and determines whether a telephone call is local or long distance.

Question 64

MPLS and VPNs continue to replace which long-distance data services?

A)Google and Yahoo
B)Telnet and FTP
C)frame relay and ATM
D)frame relay and FTP

Question 65

The ____________________ is the telephone line that leaves your house or business.

Question 66

____ means that users utilize a single desktop application to send and receive e-mail, voice mail, and fax.

A)Interactive voice response
B)Unified messaging
C)Fax processing
D)Third-party call control

Question 67

The ____________________ contains the equipment that generates a dial tone, interprets the telephone number dialed, checks for special services, and connects the incoming call to the next point.

Question 68

____________________ lines and tie lines are leased telephone lines that require no dialing.

Question 69

____ means that a user calling into a company telephone system provides some form of data by speaking into the telephone, and a database query is performed using this spoken information.

A)Third-party call control
B)Unified messaging
C)Fax-back
D)Integrated voice recognition and response

Question 70

The ______________________________ paved the way for anybody to offer a local telephone service to homes and businesses.

Question 71

_______________ is the term for the convergence of real-time and non-real-time communications services such as telephony, instant messaging, video conferencing, speech recognition, voice mail, and email into a single interface.

A)Big Bundle
B)AT&T
C)Unified communications
D)Frame relay

Question 72

In ____, a fax image that is stored on a LAN server's hard disk can be downloaded over a local area network, converted by a fax card, and sent out to a customer over a trunk.

A)third-party call control
B)unified messaging
C)fax processing
D)integrated voice recognition and response

Question 73

A(n) ______________________________ is a large, computerized, self-contained telephone system that sits in a telephone room on a company's premises.

Question 74

After the 1984's Modified Final Judgment, the local telephone companies became known as ______________________________.

Question 75

____ means that users can specify telephone numbers that are allowed to get through.

A)PBX graphic user interface
B)Customized menuing system
C)Fax-back
D)Call filtering

Question 76

Immediately after the breakup of AT&T there were 7 Regional Bell Operating Companies (RBOCs). As of year-end 2009, there are ____________________ RBOCs.

Question 77

The basic telephone system, or ________________________________________, has been in existence since the early 1900s.

Question 78

After the Telecommunication Act of 1996, new providers of local telephone services were called _____________________________________________.

Question 79

____ means that users have the ability to control a call-for example, set up a conference call-without being a part of it.

A)Third-party call control
B)Unified messaging
C)Fax-back
D)Integrated voice recognition and response

Question 80

Shortly after V.90 was introduced, _____________________________________________ introduced the V.92 modem standard.