A+ Guide To It Technical Support
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ISBN: 9780357108291
Author: ANDREWS, Jean.
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Chapter 10, Problem 8TC
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Given: A troubleshooting ticket has been raised regarding a LaserJet printer in HR not working.
To find: The part of the printer that needs to be replaced...
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8. List three HDD scheduling algorithms. [2 marks]
9. True or False? The NVM has the same scheduling algorithms with HDD. Explain
why? [2 marks]
10. Why the modern mouses use polling to detect movements instead of interrupts? [2
marks]
11. What is thrashing? How does it happen? [2 marks]
12. Given a reference string of page numbers
7, 0, 1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 0, 3, 2, 1, 2, 0, 1, 7, 0, 1
and 4 frames show how the page replacement algorithms work, and how many page
faults? [6 marks],
1) FIFO algorithm? [2 marks]
2) Optimal algorithm? [2 marks]
3) LRU algorithm? [2 marks]
13. List at least three file systems that you know. [2 marks]
14. In C programming, how the seek to a specific position in the file by offset? [2 marks]
A Personal Address Book application program allows the user to add, delete, search, save, and
load contact information. The program separates the user interface (command-line) and the
internal processing subsystem. The internal processing system consists of the following classes:
•
•
Contact Manager (responsible for add and delete operations)
Contact Finder (responsible for the search operation)
pataManager (responsible for save and load operations)
a. What design pattern can be used to implement the user interface? Explain your answer using a
class diagram for the entire system.
b. Draw a UML sequence diagram to show the behavioral view of the Personal Address Book
program, demonstrating what happens when a user enters new contact information.
A system comprises three components: A, B, and C. Calling A requires calling B, and calling B
requires calling A. Component C is responsible for dissimilar tasks T#1, #2, and T#3.
a. Comment on the modifiability of this system. What problems do you see in this system, and
how would you solve them?
b. Suppose that T#1 is performed by both component A and C. What does this indicate about A
and C? How would you solve this problem?
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- Implement a C program to find the largest element in a given array. You must have a main function and a max function. The function int main() will declare an array with the values {12, 100, 10, 1000, 20, 5}. This array will be passed to the max function. The function int max() will perform the necessary operations to find the largest element of the array. After max () is finished, have main () print the largest value and its index in the array. Do not hard code your solution! If we test your code with different array values, we should still get the correct output. The following link may help you get started: https://www.tutorialspoint.com/cprogramming/c_function_call_by_reference.htmarrow_forwardPlease run the following program and answer the questions. #include int main(void) { int arr[6] = int *pointer pointer *pointer = {10, 20, 30, 40, 50, 60}; = &arr[0]; pointer + 2; = 5 ; pointer++; *pointer - (*pointer) 5 ; pointer++; *pointer * (pointer+1) - 5%; return 0; 1. [10 pts] Please list the values of elements in array arr after line 8 (*pointer why. = 5; ) and explainarrow_forward> Comparable Method - methodName: String -priority: int + Method() + Method(methodName: String, priority: int) + abstract specificWay(): void + Getters and setters for all fields compareTo(otherMethod: Method): int + toString(): String ReadMethod - language: String + ReadMethod() + ReadMethod(methodName: String, priority: int, language: String) + specificWay(): void + Getters and setters for language + toString(): String Part 1.1. Implement the abstract class Method implements Comparable interface according to its UML diagram. Add comments stating where data fields, constructors, toString(), and other methods are (if any). Neither method should have an empty body unless abstract methods. 1. two constructors (default and the constructor with all fields) 2. getters and setters for all fields (methodName and priority). 3. toString() method: modify by yourself to match the example output. 4. Abstract method void specificWay(). 5. Implement compara To(Method otherMethod) to compare…arrow_forward
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