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Levart [38]
4 years ago
9

Explain the SCAN disk scheduling algorithm. Explain why it is sometimes called the Elevator Algorithm.

Computers and Technology
1 answer:
eimsori [14]4 years ago
3 0

Answer:

SCAN disk scheduling is the algorithm in which a certain arm of disk rotates in particular direction and serves the requests that arrive from that path. It scans the cylinder's disk in both back and forth direction.

If the arm reaches the bottom of the disk , it automatically stars working in the opposite direction and serves the request in the reverse direction path.As this functioning is similar to the elevator movement ,it is also known as elevator algorithm.

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Is bit stuffing necessary in the control or address field in theHDLC protocol? why?
steposvetlana [31]

Answer:

Many network and communication protocols require bit stuffing for the following purposes: to avoid the interpretation of data as control information. For example, with six consecutive 1 bits, X.25 uses the bit stuffing,signal the beginning and end of a frame.

High-level Data link control (HDLC) is a bit-oriented protocol for point-to-point and multi-point communication.P/F bits are present in HDLC control field.

So,Yes bit stuffing is necessary in control field.

7 0
4 years ago
Janet has created a 3D movie. She wants to make a copy of the movie and store it for future use. Which device should she use?
Valentin [98]

She can use secondary storage devices like:

1) Hard Disk

2) Floppy disks

3) Pen-Drives

3 0
3 years ago
Does anyone know the answer for question d (questions in the picture btw)
VashaNatasha [74]
Yessssss bdbfbfbsjebfjcjde
6 0
3 years ago
Define a JavaScript function named showGrades which does not have any parameters. Your function should create and return an arra
grandymaker [24]

Answer:

see explaination

Explanation:

//selective dev elements by id name

var gradeA = document.querySelector("#GradeA");

var passing = document.querySelector("#Passing");

var learning = document.querySelector("#Learning");

//function showGrades

function showGrades() {

var arr = [];

//converting string to int and inserting into array

arr[0] = parseInt(gradeA.textContent);

arr[1] = parseInt(passing.textContent);

arr[2] = parseInt(learning.textContent);

//creating json blob

var blob = new Blob(new Array(arr), {type:"text/json"});

return blob;

}

8 0
4 years ago
An important result of the development of anesthesia was?
Ksju [112]
It could be #2 since the patient would be asleep under the anesthesia they would be able to perform amputations more often since the patient would not be able to feel the pain during the procedure. It could also be #3 because if the patient is asleep you could use a more direct approach instead of avoiding certain procedures that would put the patient in a lot of pain if it was performed while they were awake. In all I would say the answer is #2, please comment which is the right answer, thank you.
7 0
4 years ago
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