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More Computer Networks Related questions:
. Which of the following is not a feature of first generation computers
Options: A) They used vacuum tubes or valves as main electronic component
B) They consumed lots of electricity and produced excessive heat
C) They used machine language and assembly language to program the machine
D) None of above
Which one of the following statements is true for the voltages in a series RC circuit?
Options: The total voltage is equal to the sum of the voltages across the resistance and capacitance, The voltage always has the same amplitude and phase for every part of the circuit, The total voltage is less than the sum of the voltages across the resistance and capacitance, The total voltage is greater than the sum of the voltages across the resistance and capacitance
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?
Options: The voltage remains at one polarity and at a steady level, The voltage remains at one polarity but changes value periodically, The voltage causes current to flow in two directions at the same time, The voltage reverses polarity periodically
Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row?
Options: EXISTS/NOT EXISTS is a form of a correlated subquery., The processing of the SELECT statements is nested., They can be used to verify functional dependencies., They are very similar to a regular subquery.
Options: a. Are some other than that in a list box the bullets are enabled b. Are different. List boxes are used to present lists and can’t be created with text boxes. c. Both of above d. None of above
Options: A network with more than one exit point., A network with more than one exit and entry point., A network with only one entry and no exit point., A network that has only one entry and exit point.