Question
What will be the output of the following code when
implementing the SCAN I/O scheduling algorithm? def scan(requests, head, direction):   seek_sequence = []   distance = 0   cur_track = 0   if direction == "left":     requests.sort(reverse=True)   else:     requests.sort()   for track in requests:     if cur_track < track:       seek_sequence.append(cur_track)       distance += abs(track - cur_track)       cur_track = track   return seek_sequence, distance requests = [98, 180, 37, 122, 14, 124, 65, 67] head = 50 direction = "right" seek_sequence, total_distance = scan(requests, head, direction) print(seek_sequence) print(total_distance)Solution
In the SCAN scheduling algorithm, the head moves in a specific direction and services requests until it reaches the end of the disk. The code sorts the requests based on the specified direction ("right" in this case). The sequence of services starts at the head position of 50 and goes to the lowest request (14), then to the highest request. The output will include the complete sequence of service requests, which is [50, 14, 37, 65, 67, 98, 122, 124, 180]. Why Other Options Are Wrong: B) [50, 14, 37, 67, 65, 98, 124, 122, 180]: This option is incorrect as it misrepresents the order of service requests based on the head movement direction. C) [50, 14, 37, 67, 65, 122, 124, 180]: This option is incorrect because it omits the request for 98, which should be included in the scan order. D) [50, 37, 65, 67, 98, 180]: This option is incorrect as it omits several requests and misrepresents the sequence of servicing. E) [50, 67, 65, 98, 122, 124, 180]: This option is incorrect because it suggests servicing starts from 67 instead of the head position and does not correctly reflect the movement of the head.
A profit-maximizing monopolist sets an output of 100 per day and a price of £10. Which of the following statements is true?
In a Cournot duopoly, if one firm increases its output, how does the other firm typically respond?
 In the case of cost-push inflation, other things being equal:
Which of the following is not correct regarding adjusted R2?
...Country A can produce 10 units of cloth or 20 units of wheat per day. Country B can produce 15 units of cloth or 15 units of wheat per day. Which of the...
For Cobb-Douglas production function the elasticity of substitution is
For a positively sloped LM curve, which of the following statements is CORRECT?
The Banking Ombudsman Scheme is introduced under which of the following sections in Banking Regulation Act, 1949?
Claudia would be willing to pay as much as $100 per week to have her house cleaned. John's opportunity cost of cleaning Claudia’s house is $70 per...
Relevant for Exams:
