1. Which statement is true regarding the use of reduced drive contrel? operated
ID: 3349688 • Letter: 1
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1. Which statement is true regarding the use of reduced drive contrel? operated sard's operational life when operating as part of a battery operations a. Does magnetic emissions from a port that can interfere with vehicle Prevents the occurrence of latch-up which can short out the board e. Both a and b 2. What conditions must hold for a valid IRQ to occur? a. The I flag in the CCR register must be set to 0 b. The local interrupt must be disabled c. The flag associated with the interrupt event must be cleared. d. Global interrupts must be disabled e. Reduced power mode must be disabled 3. Which statements are true of controlling data transfers? a. Control primitives are used to manage channel access control but it does not manage errors Not all data transfers between devices require the use of control primitives that add additional overhead to data transfers. In-band control refers to the use of the separate data channel for control primitives and user data. Out-of-band control refers to the use of the same data channel for control primitives and user data. b. c. d. e. All of the above 4. Which of the statements are true of interrupts? a. Interrupts are an effective method to handle events in an embedded system. b. Interrupts are always a better altermative to polling. c. Interrupt will always have a faster response time then polling d. Nested interrupts are an ineffective method of handling multiple interrupts e. Interrupts cannot respond to intemal events but can respond external events. 5. Which statement(s) is(are) true when IRQ is asserted a. Local interrupts are disabled before ISR execution b. Global interrupts automatically disabled before execution c. d. CPU status, that is, all registers, are stored Stores return address before ISR execution 2Explanation / Answer
The correct options of above 5 are given below.
1. e
2. b, c and e
3. e
4. a, c and e
5. a, c and d
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