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oldfinal

# oldfinal - CMSC 313 Computer Organization Assembly Language...

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CMSC 313 Fall 2001 Computer Organization & Assembly Language Programming Final Exam Name: Section Points I. /26 II. /30 III. /50 TOTAL: /106 Instructions: 1. This is a closed-book, closed-notes exam. 2. You have 120 minutes for the exam. 3. Calculators are not allowed.

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I. Multiple Choice (2 points each) For each question in this section, circle 1 answer. Choose the best answer. 1. A two’s complement overﬂow cannot occur when (a) two positive numbers are added. (b) two negative numbers are added. (c) a positive number is added to a negative number. (d) a positive number is subtracted from a negative number. 2. In unsigned binary representation, an overﬂow is indicated when two numbers are added and (a) there is a carry out of the most-significant bit (MSB). (b) there is a carry into the MSB. (c) the carry into the MSB differs from the carry out of the MSB. (d) the carry into the MSB equals the carry out of the MSB. 3. Suppose we use a ﬂoating-point representation with a sign bit, a 4-bit exponent in excess 7 notation and a 5-bit normalized fractional mantissa with no hidden bit. Then, the largest number that can be represented is 4. When the Intel Pentium CPU executes a CALL instruction
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