1 - b - Excel is a computer program, so it'd be Software
2 - a - Process of elimination, haven't heard of the term 'peopleware' before.
3 - d - A joystick accepts input from a user to interact with a computer. ex. Flight Simulators
4 - c - A monitor will display (or output) an image based on what is received from the computer.
Internal Fragmentation occurs when a process needs more space than the size of allotted memory block or use less space. External Fragmentation occurs when a process is removed from the main memory. Internal Fragmentation occurs when Paging is employed. External Fragmentation occurs when Segmentation is employed.
This is in fact false to my knowledge
MaxNumber = 0
minNumber = INT_MAX
for n in list:
if( n > maxNumber):
maxNumber = n
elif( n < minNumber ):
minNumber = n