Term
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Definition
| Skype, the popular Internet telephony service, provides a user with what type of interface? |
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Term
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Definition
| ___ is the use of one network to simultaneously carry voice, video, and data communications. |
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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. |
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Definition
| At what layer of the OSI model does RTP operate? |
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Term
SIP supports a wider range of voice & video codecs.
SIP messages use fewer processing resources. |
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Definition
| Which of the following is a reason for choosing SIP over H.323? |
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Term
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Definition
| ___ signaling functions are more limited than those performed by the protocols in the H.323 group. |
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Term
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Definition
| In SIP, which of the following network elements maintains a database with network address information for every SIP client? |
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Definition
| Using VoIP over a WAN allows an organization to avoid paying long-distance telephone changes, a benefit known as ___. |
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Definition
| A company’s use of VoIP on its WAN to avoid long distance telephone charges is known as: |
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Definition
| You have decided to establish a VoIP system in your home. Which of the following devices is necessary to connect your analog telephone to your VoIP server? |
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Term
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Definition
When using an analog telephone, a VoIP adapter that performs analog-to-digital conversion is known as a(n) ___.
ATA |
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Term
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Definition
| In general, a(n) ___ is a private switch that accepts and interprets both analog and digitals voice signals. |
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Definition
| Watching a YouTube video on the Web is an example of which of the following types of video-over-IP services? |
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Definition
| Among all video-over-IP applications, ___ is perhaps the simplest. |
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Definition
| When VoIP relies on the Internet, it is often called ___. |
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Term
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Definition
| ___ is a measure of how well a network service matches its expected performance. |
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Term
| It established a path between the server and receiver that is guaranteed to supply sufficient bandwidth for the transmission. |
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Definition
| How does RSVP help improve QoS? |
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Term
| Report on the degree of packet loss and delay in a connection |
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Definition
| What can RTCP do that RTP cannot? |
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