3.In system modeling : A-Complementary system model : B-Context model: CComposition model (1) Here entity-relation (E-R) diagram show how entities in the system are composed of other 90 | entities.2-Shows how the system being modeled is positioned, in an environment with other systems and process. 3-Present different information about the system.
0.It is an electronic commerce in digital goods and services, intended for consumption by the human senses. It encompasses a range of formats, including text, structured data, image, raster/bit-map and vector, moving image (animation and video), sound, and combinations of the above (multimedi(A).
Options: (A)Electronic data interchange (EDI) (B) Electronic Publishing (C) Electronic Services Delivery (ESD) (D) None of these 126 | 1
Which one of the following statements most accurately describes the nature of inductive reactance?
Options: Inductive reactance is an opposition to current flow in dc circuits, Inductive reactance is an opposition to current flow in ac circuits, Inductive reactance is another term for counter emf, Inductive reactance is a force that tends to overcome the effects of counter emf
Which one of the following phrases most accurately describes a purely inductive circuit?
Options: Resistances provide the only opposition to current flow, Inductive reactance provides the only opposition to current flow, Combinations of resistance and inductive reactance provide any opposition to current flow, The ac voltage lags the current by 90 degree
Intranets and extranets can use their network fire walls and other security features to establish secure Internet links within an enterprise or with its trading partners. Select the best fit for answer:
Options: Network Server, Virtual Private Network, Network operating system, OSI
Which one of the following statements is true for the voltage in a parallel RC circuit?
Options: The voltage always has the same amplitude and phase for every part of the circuit, The total voltage is equal to the sum of the voltages across the resistance and capacitance, The total voltage leads the total current by less than 90 degree, The total voltage is less than the sum of the voltages across the resistance and capacitance