True/False Indicate whether the
statement is true or false.
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1.
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All VoIP calls are carried over the Internet.
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2.
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An off-the-shelf workstation can be programmed to act like an IP
telephone.
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3.
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IP telephones are directly connected to the local loop.
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4.
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SIP and H.323 account for communication between media gateways.
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5.
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It is more difficult to transmit VoIP and video over IP signals over a
packet-switched network than it is to transmit data signals.
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Multiple Choice Identify the
choice that best completes the statement or answers the question.
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6.
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____ is the use of one network to simultaneously carry voice, video, and data
communications.
a. | Multicasting | c. | Divergence | b. | Unicasting | d. | Convergence |
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7.
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____ describes the use of any network to carry voice signals using the TCP/IP
protocol.
a. | Telephony | c. | IP telephony | b. | Internet telephony | d. | Voice telephony |
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8.
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When VoIP relies on the Internet, it is often called ____.
a. | telephony | c. | IP telephony | b. | Internet telephony | d. | voice telephony |
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9.
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IPTV, videoconferencing, streaming video, and IP multicasting belong to the
range of services known as ____.
a. | voice over IP | c. | video over IP | b. | data over IP | d. | Web over IP |
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10.
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____ messaging is a service that makes several forms of communication available
from a single user interface.
a. | Unified | c. | Diversified | b. | Instant | d. | Open |
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11.
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Using VoIP over a WAN allows an organization to avoid paying long-distance
telephone charges, a benefit known as ____.
a. | charge bypass | c. | toll bypass | b. | distance bypass | d. | easypass |
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12.
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When using an analog telephone, a VoIP adapter that performs analog-to-digital
conversion is known as a(n) ____.
a. | VTA (voice telephone adapter) | c. | DTA (digital telephone
adapter) | b. | ATA (analog telephone adapter) | d. | DTA (data telephone
adapter) |
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13.
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In general, a(n) ____ is a private switch that accepts and interprets both
analog and digital voice signals.
a. | IP-PBX | c. | Data PBX | b. | analog PBX | d. | IT-PBX |
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14.
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When a caller uses an IP telephone, his or her voice is immediately digitized
and issued from the telephone to the network in ____ form.
a. | segment | c. | circuit | b. | frame | d. | packet |
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15.
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A computer programmed to act like an IP telephone is known as a(n) ____.
a. | video phone | c. | streaming server | b. | softphone | d. | compu-phone |
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16.
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The popular Internet telephony software, Skype, is a type of ____.
a. | IP telephone | c. | teleapplication | b. | softphone | d. | compu-phone |
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17.
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Among all video-over-IP applications, ____ is perhaps the simplest.
a. | VoIP | c. | IPTV | b. | videoconferencing | d. | streaming video |
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18.
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One drawback to ____ video is that content may not be edited before it’s
distributed.
a. | on demand | c. | streaming server | b. | live streaming | d. | VoIP |
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19.
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Many streaming video services - and nearly all of those issued over a public
network, such as the Internet - are examples of ____ transmissions.
a. | multicast | c. | unicast | b. | broadcast | d. | telecast |
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20.
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When more than two people participate in a videoconference, for example, in a
point-to-multipoint or multipoint-to-multipoint scenario, a video ____ is required.
a. | bridge | c. | gateway | b. | switch | d. | router |
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21.
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____ signaling functions are more limited than those performed by the protocols
in the H.323 group.
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22.
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SIP and H.323 regulate ____ for VoIP or video-over-IP clients and
servers.
a. | call signaling only | b. | control only | c. | call signaling and
control | d. | communication between media gateways |
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23.
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A(n) ____ is a computer that manages multiple media gateways.
a. | MPLS | c. | MEGACO | b. | MGCP | d. | MGC |
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24.
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Many network engineers consider ____ to be superior to MGCP.
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25.
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____ is preferred over TCP for real-time applications such as telephone
conversations and videoconferencing.
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26.
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____ is a measure of how well a network service matches its expected
performance.
a. | QoS | c. | DiffServ | b. | RSVP | d. | MPLS |
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