Hi teacher, can u help me answer all the question? If your answer is true I will upvote you Q1 A spooler 1. mediates between a computer application and a slow peripheral, such as a printer. II. retrieve documents produced by computer from a queue at the speed of the computer, then retrieved and printed at the speed of the printer can be used between a computer system and a card reader IV. release user from having to wait for output from a printer to be ready. III. Select one: O A None of the above. O B. 1, 11, III and IV only OC I and II only OD. I, II and IV only Q2 the rotational delay of a disk will always be calculated as Select one: O A. the time it takes for the total rotation of the disk takes place divide by 3 O B. the time it takes for the total rotation of the disk takes place in milisec O the time it takes for the total rotation of the disk takes place OD. the time it takes for the total rotation of the disk takes place divide by 2 Q3 Given the following concurrent program using cobegin and coend construct and semaphores to force a precedence constraints for execution of six statements 51, 52, 53, 54,55 and 56. var a,b,c,d,,,g: semaphore; begin cobegin begin sl; V(a); V(b) end; begin P(a): S2: V(c): V(d) end; begin P(b): 53: V(o) ond: begin P(c): P(): S4 ond; begin P(d): Ple); Pig): 55 end begin 56; V(E); V(g) end; coend end: which of the following precedence graph represent the precedence of execution of 51 to 56 as enforced by the code above? Select one: . S1 b S2 S3 S4 S5 g S6 . S6 | S3 S5 g (84 . -b S4. (S5 (86) BD. s1 b S3 (52 (55) S4 S6 Q4 Which of the following is NOT a function of a device traffic controller? Select one: O A Determine when device is not busy. O B. Select appropriate available path to a device Oc determine if there's at least one path to a device of the requested type available OD. Process device interrupts