- High light the links of the forward (path) tree
that is rooted at node A in the following network:
(20 pts)
- Give the content of the
routing table
for node A:
- High light the links of the reverse (path) tree
rooted at node A in the following network:
- Suppose the multicast uses DVMRP to send multicast messages
and currently only nodes D and E are serving
multicast members of some multicast group.
High light the links the multicast tree that is rooted at node A that DVMRP will use in transmitting multicast messages:
- What are the advantages of pyramid broadcast ? (5 pts)
- What are the disadvantages of pyramid broadcast ? (5 pts)
- Can pyramid broadcast be used in live video transmission ?
If yes, explain why, if no, explain why not. (5 pts)
- Suppose the video data consumption rate is 1 Mbps.
We use pyramid broadcast to transmit 100 video objects and
each video object is 100 min in length.
The total bandwidth of the transmissin medium is 1 Gbps.
- If we divide the video objects into 4 fragments,
what is the maximum size ratio f between the successive
fragments so that the receiver will not be disrupted (5 pts) ?
- And if we divide the video objects into 10 fragments, what is the maximum size ratio between the successive fragments so that the receiver will not be disrupted (5 pts) ?
- If we divide the video objects into 4 fragments,
what is the maximum size ratio f between the successive
fragments so that the receiver will not be disrupted (5 pts) ?
- What is the access time if we use the staggered broadcast method ?
(5 pts)
- Suppose we use the pyramid broadcast method and divide the video
objects into 4 fragments.
What is the access time ? (10 pts)
- We use the pyramid broadcast method and divide the video
objects into 10 fragments.
What is the access time ? (10 pts)
Suppose the video data consumption rate is 1 Mbps. We want to broadcast 100 video objects and each video object is 100 min in length. The total bandwidth of the transmissin medium is 1 Gbps.