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14 Cards in this Set
- Front
- Back
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What is the Burstiness? |
Measure of variation in throughput, the ratio between the mean bit rate and the peak bit rate, also need to consider peak deviation. |
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What is the error bit rate for fiber optic and copper? |
-Fiber optic = 1 in 10^11 -Copper = 1 in 10^6 |
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What is the error rate of a LAN? |
1 bad frame (not bit) per 1 million bytes of data |
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What is the error rate of shared Ethernet? |
< 0.1% of frames result in collision |
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When does Ethernet become less efficient? |
At the collision rate becomes higher. |
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When do users normally become frustrated with in terms of response times? |
When it exceeds 0.1 seconds. |
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What is Latency (Delay)? |
Time between frame ready to transmit and frame being received - measure of delay within the network |
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What does total end to end delay include? |
-Access delay -Bit transmission delay -Network transit delay |
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What is Jitter (Delay variation)? |
Variation in delay over time, important for delay sensitive data, describes the inter-packet gap for streaming applications. |
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What is critical network criteria that supports multimedia applications? |
-Throughput -Goodput -Delay -Jitter (Variation in Delay) -Error Rate -Multicasting/Broadcasting capabilities -Security |
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What are two types of information? |
Block and Stream |
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What is a block? |
Information that occurs in a single block = text message, data file, JPEG image, size = bits/block |
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What is a stream? |
Information that is produced and transmitted continuously = real-time video, streaming video = bit rate = bits/second |
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What does the data rate for a video depend on? |
-Frame rate -Size of display and resolution used -Number of colors in the image |
