Which of the following describes the operation of a positive edge-triggered D-type flip-flop?
Options: If both inputs are HIGH, the output will toggle., The output will follow the input on the leading edge of the clock., When both inputs are LOW, an invalid state exists., The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clock.
ENIAC (Electronic Numerical Integrator and Calculator) had huge advantage over Mark I because it used electronic valves in place of the electromagnetic switches. In the beginning, ENIAC was used for calculating the path of artillery shells. For which other was weapon design was it utilized?
Options: hydrogen bomb, atom bomb, agnimissile, fighter aircraft
Options: Cells B7 and cell B9 only.
B. Cells B7 through B9.
C. Cell B8 only.
D. None of the above.
Ans:– B ,
In an SQL SELECT statement querying a single table, according to the SQL-92 standard the asterisk (*) means that:
Options: all columns of the table are to be returned., all records meeting the full criteria are to be returned., all records with even partial criteria met are to be returned., None of the above is correct.
Options: the data base and the model base, the central processing unit, incoming data and outgoing information, incoming data, the central processing unit, the model base, outgoing information, and the data base
If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?
Options: Discard it and send an error message back to the originating host, Flood the network with the frame, Add the source address and port to the MAC address table and forward the frame out the destination port, Add the destination to the MAC address table and then forward the frame