explain the component of communication system , what is the function of input transducer , number of time slots in SDH frame , encryption is easy at...............system , input trancduscer convert the original msg into...................form , multiplexing technique that separate between user using frequency for each user all time , ATM mode cell size ..........................., full duplex connection are a ..........................for connection but not at same time, halfduplex connection are a ..........................for connection but not at same time, halfduplex connection are a ..........................for connection but not at same time, E1 speed frame =................, ATM frame size are.............................bytes,............................bytes for bayload .....................for header, separate between user by using one frequency and one time slot for all each user all time , define how user can access the network, compare between multiplexing technique with drwaing, mention steps of ADC with drawing, draw asynchronous transfer mode , true or false : coaxial cable cant exit in channel media , true or false ATM payload equal to 48 bits, half duplex can send and receive data in same line simultaneously , nyquist theory state that , if we coding with 3 bits how many levels in quantization process , true or false : the less number of levels in Quantization the less efficiency , true or false : its very hard to separate between noise in digital signal , true or false : its very hard to separate between noise in analog signal , true or false : its very hard to separate between noise in analog signal , mention three of advantage of digital siganl , the voltage difference between each level of quantization = , mention 2 of disadvantge of digital signal , mention 2 of disadvantge of digital signal , true or false : we can convert any decimal number to binary number, and decimal number is base .................. with ten digits from ......................to.........................., and binary number is base .................. with two digits from ......................to.........................., and binary number is base .................. with two digits from ......................to.........................., true or false one can see digital signal in percentage , , order ((channel – output –receiver – transmitter-source –output transducer – input transducer ), order ((channel – output –receiver – transmitter-source –output transducer – input transducer ), The numbers of bits in coding process represented by, In ………..signal its difficult to separate noise from signal, In ………..signal its difficult to separate noise from signal, In……………signal its easy to insert control bits, In ………..signal its easy to separate noise from signal, the temperature or the atmospheric pressure of a certain location can consider as ……..signal, There are two types of information ………..,………., 1 Y = ………….Z, 1Z=……………T, 1P=……………K, 1 H=…………..da, 1G=…………..H, true or false :, Analog signal is continuous wave that any value within a range, true or false :Analog systems take only limited number of values, true or false :Binary system has only two numbers, true or false Decimal systems can be presented from 0 to 9, true or false and correct :Celsius is SI coherent unit, true or false Yotta = 106 peta, true or false :Giga = 103 mega, true or false :Yotta = 106 exa, coherent or non coherent , coulomb symbol................and quantity ..................., coulomb symbol................and quantity ..................., what is the unit of Electrical potential difference, the unit of capacitance is.........................., the symbol of farad is .............................., weber is the unit of ........................., hennery is the unit of , tesla is the unit of......................., rad is the symbol of..................which is unit of................., Sr is the symbol of......................which unit is .................., pascal quantity is ........................, the number of base SI unit is ................, SI stands for ..............................., Celsius = ……….K, Units which always be represented as products of powers of the base units.

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