[amp_mcq option1=”priority is programmable” option2=”it is relatively easy to add more devices to the chain” option3=”the failure of one device may affect other devices on the chain” option4=”the number of control lines is independent of the number of devices on the chain E. None of the above” correct=”option3″]
The correct answer is: C. the failure of one device may affect other devices on the chain.
A daisy chaining priority control scheme is a type of control scheme in which devices are connected in a series, with each device having a priority level. The device with the highest priority level is given access to the shared resource first, followed by the device with the second highest priority level, and so on.
This type of control scheme is relatively easy to implement, as it only requires a single control line to be connected between each device. However, it has the disadvantage that the failure of one device may affect other devices on the chain. For example, if the device with the highest priority level fails, then no other device will be able to access the shared resource.
Options A, B, and D are all characteristics of a daisy chaining priority control scheme. Option A is correct because the priority of each device can be programmed. Option B is correct because it is relatively easy to add more devices to the chain. Option D is correct because the number of control lines is independent of the number of devices on the chain.