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EN0-001 Exam Dumps : ARM Accredited Engineer

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ARM Accredited Engineer Questions and Answers

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Question 1

The disassembly of a program written in C shows calls to the function__aeabi_fadd. Which one of these compiler floating point options could have been used?

Options:

A.

Hard floating-point linkage

B.

Soft floating-point linkage without floating-point hardware

C.

Hard floating-point linkage with optimization for space

D.

Soft floating-point linkage with floating-point hardware

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Question 2

It is common to declare structures as "packed" in order to minimize data memory size. Which of the following accurately describes the effect of this?

Options:

A.

Members will be stored as bit-fields

B.

Data Aborts will be disabled for all structure accesses

C.

Structure members will be re-ordered so that the smallest are first

D.

Multi-byte members are not required to be naturally aligned

Question 3

In an ARMv7-A system, the following C function calculates a simple checksum for an input data packet of variable length. The checksum is defined to be the sum of all of the 16-bit data items in the packet modulo 65536. The parameter data_items contains the number of 2-byte data items in the packet, and it cannot be zero by design.

When using an ARM compiler, which TWO of the following optimizations could improve the performance of this code? (Choose two)

Options:

A.

Use a do/while loop instead of a for loop

B.

Change the type of sum to be an unsigned short

C.

Change the type of i to be an unsigned int

D.

Use signed variables instead of unsigned variables

E.

Declare sum as a global variable

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