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describe dynamic modelthe dynamic model specifies allowable sequences of changes to the objects from an object model it contains event trace diagrams
what is self-transition if there is a transition which goes back to same state it is known as self- transition with a trigger action exit action
what are two special eventsthe two special events are as entry and exit any action which is marked as linked to entry event is executed whenever
what is a guard condition explain it with a suitable examplethe guard-condition is a boolean expression written with respect to parameters of
what is a state chart diagramstate diagrams state chart diagram explain all possible states that a particular object can get into and how objects
state about the international standardizationthere are many examples certainly some systems for which there is international standardization include
what are the benefits of wireless devicesone benefit is that if everyone uses standard everyone can talk to anyone another benefit is that extensive
what are the drawbacks of wireless devicesone drawback is security every random delivery man who happens to be in building can listen on network
explain in detail about wireless network think about unseen terminal problem imagine a wireless network consist of five stations a through e such
describe about the term- networkif network tends to lose the packets it is better to acknowledge each one of them separately so the lost packets
how lans connected to internetdoubling every 18 months means factor of four gains in 3 years in 9 years gain is then 43 or 64 which leads to 64
determine about the tcpip and osi modelboth models are based on the layered protocols both comprise network transport and application layer in both
define the term - frame and packetsframes sum up packets when a packet arrives at data link layer the complete packet header data and remaining all
explain the meaning of negotiationnegotiation is process of getting both sides to agree on some values or parameters to be used during communication
state the difference between byte streams and messagebyte streams and message are different in a message stream network keeps track of the message
what is connection-oriented communicationconnection-oriented communication can be in three phases in establishment phase a request is made to set up
what are reasons behind using layered protocols reasons for using layered protocols using them leads to breaking up design problem into smaller
explain the concept of router-root paththe mean router-router path is double the mean router-root path number levels of tree with root as 1 and the
what are the call routerscall routers a b c d and e there are ten potential lines ab ac ad ae bc bd be cd ce and de each of these lines has four
describe the main factors of switching delayno the speed of propagation is 200000 kmsec or 200 metersmicrosec in 10 microsec signal travels 2 km
what is uniform delivery timea uniform delivery time is required for voice so amount of jitter in net- work is significant this could be expressed as
state about transcontinental bera transcontinental ber link may have many gigabitssec of the bandwidth but latency will also be high due to speed of
explain how the lan model be developedthe lan model can be developed incrementally if lan is just a long cable it cannot be brought down by single
determine the rate of communication linethe dog could carry 21 gigabytes or 168 gigabits a speed of 18 kmhour that is equal to 0005 kmsec the time to
develop a user mode command interpreter which support these functions quotlist-shortquot -- just like ls without any