You have a subnet mask of 255.255.255.248. What is the prefix notation?
A) /29
B) /28
C) /27
D) /26
A
Explanation: The binary representation of 255.255.255.248 is 11111111.11111111.11111111.11111000 (29 1s and 3 0s); therefore, the prefix notation is 29.
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Which of the following encompasses the other three?
(a) sequence structure (b) iteration structure (c) control structure (d) selection structure
An ISR be written to execute quickly because ________.
a) there can be several devices that interrupt at the same DIRQL, so returning quickly allows the system to determine which device is interrupting and service the interrupt faster. b) the kernel interrupt handler holds the driver's spin lock while the ISR is executing, preventing other processors from executing some portions of the driver's code, including the ISR. c) while the ISR is executing, the processor executes at the device's DIRQL, which might mask interrupts from other devices. Returning from the ISR quickly allows the system to maintain high responsiveness to all hardware interrupts. d) all of the above