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Why must a modem be used to transmit binary data through a PSTN? (1) Use sketches and additional text to describe the following modulation methods. (a) Amplitude shift keying (b) Frequency shift keying (2) Discuss the factors that influence the choice of carrier frequency and the bandwidth used by the demodulator section of a modem.
Illustrate 16-bit ISA? Compare it with 8-bit ISA bus. The only difference between 8 and 16-bit ISA bus is that an extra connector is attached behind the 8-bit connector. 16-b
Instruction Cycle The instruction cycle consists of a series of steps required for the execution of an Instruction in a program. A distinctive instruction in a program is compo
Software Engineering is a layered technology. Explain
Q. Use of Overlapped Register Windows? Register file comprises 138 registers. Let them be called by register number 0 - 137. Diagram demonstrates the use of registers: when
Why is Translation Look-aside Buffers (TLBs) important? The implementation of page-table is completed in the following manner: Page table is maintained in main memory.
Q. What is a good resolution? In fact it relies on your hardware. Hence it's the maximum your hardware can allow you. But one odd-looking resolution that has become popular is
Define software architecture and describe which types of architectures can be used in Email or Facebook applications
? Actor: Actor shows an external user / end user who interact with the system. ? Object: Object is shown by one of components of the system. ? Unit: A unit is a subsystem, o
Two popular encryption techniques to ensute secured transactions on the net? 1. Translation table 2. Word/byte rotation and XOR bit masking.
Q. What do you mean by Resolution? Resolution is parameter which defines possible sharpness or clarity of a video image. Resolution is defined as number of pixels which make u
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