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3 years ago

A support agent who feels that a user needs substantial assistance with the organization of files on their pc should ____.

1 answer:

6 0

A support agent who feels that a user needs substantial assistance with the organization of files on their PC should p<span>oint the user to useful information about file organization.
Given that the user needs substantial assistance, the support agent cannot just simply explain to them what they need to do. He does, however, need to tell them where they can learn about what they need to know.
</span>

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The frame work for storing records in database is a

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The frame work for storing records in database is a report. (b)

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3 years ago

Threads in the ____ are idle, pending availability of a cpu.

slava [35]

Run queue. They can also be waiting on I/O.

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4 years ago

How does polling-based network receive work? How is it different than interrupt based network? Describe both functions and list

Alenkasestr [34]

In a polling-based network receives, the operating system keeps checking the status register after a fixed time interval to see whether a device needs hardware attention or not. CPU gradually checks the status of receive bit after a defined time interval of a clock and if the value of receive bit is true then data is moved from the RX register to the memory. In interrupt-based networks, whenever a device needs hardware processing then an interrupt is raised to inform the CPU for device attention. The data of the device is transferred to memory from the network card.

Polling is a protocol, not a hardware mechanism where the device gets attention by CPU. An interrupt is a hardware mechanism, not a protocol where the device gets attention by the interrupt handler. In polling, during receiving, parts of received data need to transfer to memory but in case of interrupts, whole data is transferred at once after receiving is done. An interrupt is a heavy operation as compared to pooling because hardware involves in it. For large amounts of data, Polling becomes an inefficient method. In polling, CPU gradually checks devices at regular intervals whereas the Interrupt handler can send interrupt at any time. Each device has its own Command ready bit which indicates whether the device requires servicing or not. In polling, CPU wastes numerous clock cycles by repetitively checking the command-ready little bit of each device. In Interrupt based network, the interrupt request line indicates whether the device requires servicing or not. In interrupt-based network, CPU cycles not wasted but CPU is disturbed only when device send interrupt signals.

Relative performance between programmed I/O and DMA:

For determining the relative performance between programmed I/O and DMA, important factors are:

1. Size of data

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3 years ago

The Hazard Communication Standard, commonly called the “Right-to-Know” law, gives you the right to know what information?

statuscvo [17]

Lets you know if their are any certain hazards or messes on the property like mold or ants

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3 years ago

The trigonometry book says: sin^2(t) + cos^2(t) = 1 Write a Python program that verifies the formula with the help of the Python

MAXImum [283]

Answer:

If you open your python-3 console and execute the following .py code you will have the following output. (Inputing 20 e.g)

Write the angles in degrees: 20

radian angles is: 0.3490658503988659

cosene( 0.3490658503988659 ) = 0.9396926207859084

sine( 0.3490658503988659 ) = 0.3420201433256687

sin^2( 0.3490658503988659 ) + cos^2( 0.3490658503988659 ) = 1.0

Explanation:

Code

import math

for i in range(1,4):

angle = int(input('Write the angles in degrees: '))

#mat library better works with radians

angle_radians = (angle*math.pi)/180

#print output

print('radian angles is: ',angle_radians)

print('cosene(',angle_radians,') = ',math.cos(angle_radians))

print('sine(',angle_radians,') = ',math.sin(angle_radians))

res = (math.sin(angle_radians))**2 + (math.cos(angle_radians))**2

print('sin^2(',angle_radians,') + cos^2(',angle_radians,') = ',res)

6 0

3 years ago