Tentamen (uitwerkingen)
CS6250 Exam 2 - Lesson 11
- Vak
- Instelling
CS6250 Exam 2 - Lesson 11
[Meer zien]Voorbeeld 2 van de 5 pagina's
Voorbeeld 2 van de 5 pagina's
In winkelwagen
In winkelwagen
gesponsord bericht van onze partner
Verkoper
Volgen
Victorious23
Ontvangen beoordelingen
Voorbeeld van de inhoud
CS6250 Exam 2 - Lesson 11high bit rate - -The first defining property for video is ______, generally
somewhere between 100 kbps to over 3Mbps, depending on the quality of
the video.
-video - -The first defining property for _____ is high bit rate, generally
somewhere between 100 kbps to over 3Mbps, depending on the quality.
-stored video - -Streaming ________ is interactive (the user can play, pause,
etc.) and should have continuous playout, which means that it should play
out the same way it was recorded without freezing up in the middle.
-CDN - -Generally, streaming stored video files are stored on a ______ rather
than just one data center.
-audio and video - -Streaming live ________ generally has many
simultaneous users, sometimes with different geographical locations. They
are also delay-sensitive, but not as much as conversational voice and video
applications.
-delay-sensitive - -Streaming live audio and video generally has many
simultaneous users, sometimes with different geographical locations. They
are also ________, but not as much as conversational voice and video
applications.
-Conversational - -_______ voice and video is highly delay-sensitive and are
loss-tolerant.
-delay-sensitive - -Conversational voice and video is highly _______ and are
loss-tolerant.
-Audio - -_______ is encoded by taking many (as in, thousands) of samples
per second, and then rounding each sample's value to a discrete number
within a particular range.
-rounding - -Audio is encoded by taking many (as in, thousands) of samples
per second, and then ______ each sample's value to a discrete number within
a particular range.
-Quantization - -Rounding to a discrete number.
-encoding - -The three major categories of ______ schemes are narrowband,
broadband, and multimode (which can operate on either)
, -narrowband, broadband, multimode - -The three major categories of
encoding schemes are ________, _______, and _______ (which can operate on
either)
-signaling protocol - -A _______ takes care of how calls are set up and torn
down.
-QoS - -The three _____ VoIP metrics are end-to-end delay, jitter, and packet
loss.
-jitter - -The three QoS VoIP metrics are end-to-end delay, ____, and packet
loss.
-end-to-end delay - -The time it takes to encode the audio is an example of
_______.
-400 - -An end-to-end delay greater than _____ms starts becoming
unacceptable, as people start accidentally talking over each other.
-delay jitter - -Between all the different buffer sizes and queueing delays
and network congestion levels that a packet might experience, different
voice packets can end up with different amounts of delay. This is known as
_____.
-jitter buffer - -Using a _______ mechanism helps to smooth out and hide the
variation in delay between different received packets, by buffering them and
playing them out for decoding at a steady rate.
-longer - -A ______ jitter buffer reduces the number of packets that are
discarded because they were received too late, but that adds to the end-to-
end delay.
-shorter - -A _______ jitter buffer will not add to the end-to-end delay as
much, but that can lead to more dropped packets, which reduces the speech
quality.
-lost - -With VoIP, a packet is _____ if it either never arrives OR if it arrives
after its scheduled playout.
-packet loss - -VoIP protocols have three major methods of dealing with
________: FEC (Forward Error Correction), interleaving, and error
concealment.
-Forward Error Concealment (FEC) - -______ works by transmitting redundant
data alongside the main transmission, which allows the receiver to replace
lost data with the redundant data.
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper Victorious23. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €8,34. Je zit daarna nergens aan vast.
Is Stuvia te vertrouwen?
4,6 sterren op Google & Trustpilot (+1000 reviews)
Afgelopen 30 dagen zijn er 67096 samenvattingen verkocht
Opgericht in 2010, al 14 jaar dé plek om samenvattingen te kopen