Exam (elaborations)
CS6250 Exam 2 - Lesson 11
- Course
- Institution
CS6250 Exam 2 - Lesson 11
[Show more]
Seller
Follow
Victorious23
Reviews received
Content preview
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.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Victorious23. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now