Determine average waiting time for constant length messages

Assignment Help Physics

Reference no: EM1380126

I. Messages reach at random to be sent across a communications link with a information rate of 9600 bps. The link is 70 percent utilized, and the average message length is 1000 octets. Estimate average waiting time for constant-length messages and for exponentially distributed length messages

II. Messages arrive at a switching center for a particular outgoing communications line in a Poisson manner with a mean arrival rate of 180 messages per hour. Message length is distributed exponentially with a mean length of 14,400 characters. Line speed is 9600 bps.
What is the mean waiting time in the switching center?

III+IV. Consider a bus LAN with a number of equally spaced stations with a data rate of 10 Mbps and a bus length of 1 km.

a. What is the mean time to send a frame of 1000 bits to another station, measured from the beginning of transmission to the end of reception? Assume a propagation speed of 200m/sec.

b. If two stations begin to transmit at exactly the same time, their packets will interfere with each other. If each transmitting station monitors the bus during transmission, how long before it notices interference, in second? In bit times?

Reference no: EM1380126

Questions Cloud

Finding minimum transmission time : Assume you wish to send a 200 bytes long message from your equipment to a friend's machine via four intermediate nodes. You are needed to use a header size of 5 bytes per packet.

Relative cell reference and an absolute cell reference : Determine and explain the ways a corporation can use advanced Excel tools such as MIN and MAX statement, conditional formatting, and additional tools that have found to manage their business finances.

Find the transmission delay in seconds : Think about a communications satellite in geosynchronous orbit. It sits approximately 35,786 kilo meter above the Earth's equator.

Physical protocol data unit : Discuss how big is a physical protocol data unit and determine the number of simultaneous transmissions for many network architectures.

Determine average waiting time for constant length messages : Messages reach at random to be sent across a communications link with a information rate of 9600 bps. The link is 70 percent utilized, and the average message length is 1000 octets.

Find the number of physicians : Find the number of physicians to be located in each of the areas if the physicians are income maximizers - Population Index

Find the db strength of the signal : A signal starts at x point. As it travels to y point it loses eight db. At point y the signal is boosted by ten db. As the signal travels to point z it loses 7 db.

Terminal and the corresponding data center : 2-information centers used for retail credit authorization are located in 2-different major population centers, which are separated from each other through a large zone of very little population.

Greedy strategy for finding a shortest path : Think about the given greedy strategy for finding a shortest path from vertex start to vertex goal in a connected graph.

User Account

All Pages