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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.
2. Explain any ten CASE tools
Explain the working of broad band ISDN. BISDN Configuration: Figure shows how access to the BISDN network is accomplished. All peripheral devices are interfaced to the acces
Question: (a) Provide types of computer systems and briefly describe each one. (b) With the help of example, explain the difference between open source software, freeware a
What are assembler directives? Ans: These are the instructions that direct the program to be executed. They have no binary corresponding so they are called pseudo-opcodes. The
Q. Salient features of direct addressing mode? A number of salient points about this technique are: This scheme offers a limited address space since if address field has
An operating system contains 3 resource classes. The number of resource units in these classes is 7, 7 and 10. The current resource allocation state is shown below:
What is independent process? A process is independent it cannot affect or be affected by the other processes implementing in the system. Any process does not share data with ot
PROCEDURE TO CREATE PROJECT IN COLLABORATION SYSTEM
Distinguish between ROM, PROM, EPROM, EEPROM. Ans: ROM: It also called Read Only Memory is a Permanent Memory. The data is permanently stored and cannot be changed in Perm
In a DTMF phone a dialling of 8 generates (A) 1336 Hz- 770 Hz (B) 1209 Hz - 1477 Hz (C) 1209 Hz- 941 Hz (D) 1336 Hz-852 Hz
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