DLD FINAL EXAM 1 QUESTIONS AND VERIFIED ANSWERS

Key elements of system engineering typically outlive the technologies they
interface to.

Answers:
• True
• False - ANSWER Answer: False

What makes a good system design
(Check all that apply):

Answers:
• "Bang for the buck": delivered by minimal mechanism, maximal function
• Reliable in a wide range of environments
• Accommodating of future technical improvements
• Efficient system engineering techniques - ANSWER Answer:
1) "Bang for the buck": delivered by minimal mechanism, maximal function
2) Reliable in a wide range of environments
3) Accommodating of future technical improvements

Wrong:
4) Efficient system engineering techniques

Hierarchical design yields:

Answers:
• Limited complexity at each level and reusable building blocks
• "Bang for the buck" and reusable building blocks.
• Reliability and reusable building blocks
• Limited complexity at each level and reliability - ANSWER Answer:
A) Limited complexity at each level and reusable building blocks

"6004" is:

,Answers:
• The course at MIT that ELEN3431 is modeled after.
• The year that computers will achieve sentience; i.e., the singularity
• The number of 8-bit words in a 64K memory.
• A microprocessor made by Intel. - ANSWER Answer:
A) The course at MIT that ELEN3431 is modeled after.

Acronyms—match the acronym with what it means.

Answers:
A) IC
B) CMOS
C) PCB
D) MOSFET - ANSWER Answer:
A) IC - Integrated Circuit
B) CMOS - Complementary Metal Oxide Semiconductor
C) PCB - Printed Circuit Board
D) MOSFET - Metal-Oxide Field Effect Transistor

Does engineering ever use tricks to get the job done?

Answers:
A) Yes
B) No - ANSWER Answer:
A) Yes

What does the acronym "ASCII" mean?

Answers:
A) Accrued Scholastic Council Information Inclusive
B) Asynchronous Sequential Coding Into Information
C) American Stated Conditions for Inclusive Information
D) American Standard Code for Information Interchange - ANSWER Answer:
D) American Standard Code for Information Interchange

Assume that "173" is an octal number. What is it in binary?

Answers:

,A) 101110011
B) 10000111000111
C) 1101010101
D) 1111011 - ANSWER Answer:
D) 1111011

Assume that "173" is a hexadecimal number. What is it in binary?

Answers:
A) 101110011
B) 10000111000111
C) 1101010101
D) 1111011 - ANSWER Answer:
1) 101110011

If we use 2's complement for signed integers, we...

Answers:
A) ...can avoid using signed-magnitude numbers.
B) ...must use signed-magnitude algebra.
C) ...cannot subtract a negative number from a negative number.
D) ...can use addition rules for subtracting. - ANSWER Answer:
D) ...can use addition rules for subtracting.

How is a Hexadecimal number identified?

Answers:
A) With a leading zero.
B) With a lower-case H.
C) With a 0x prefix.
D) With nothing. Hexadecimal is the default for number encoding. - ANSWER
Answer:
C) With a 0x prefix

Convert hexadecimal "101" into octal.

Answers:
A) 5

, B) 101
C) 401
D) 41 - ANSWER Answer:
C) 401

What value in decimal is the signed-magnitude number 110?

Answers:
A) 6
B) -6
C) -2
D) 2 - ANSWER Answer:
C) -2

A zero in front of a number; i.e., 0222, indicates what?

Answers:
A) An Octal number.
B) A Binary number.
C) A Hexadecimal number.
D) A decimal number. - ANSWER Answer:
A) An Octal number.

Convert octal "101" into hexadecimal.

Answers:
A) 5
B) 101
C) 401
D) 41 - ANSWER Answer:
D) 41

What is the binary 101010101010101 in octal?

Answers:
A) AAA5
B) 5555
C) 52525