©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
Digital Logic Design Exam Questions And
Answers (Guaranteed A+)
"6004" is: - answer✔the course at MIT that ELEN3431 is modeled after.
What makes a good system design? - 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
Does Engineering ever use tricks to get the job done? - answer✔Yes
Hierarchical design yields: - answer✔limited complexity at each level and reusable building
blocks
Key elements of system engineering typically outlive the technologies they interface to. -
answer✔True
What is the binary 101010101010101 in octal? - answer✔52525
convert hexadecimal 101 into octal. - answer✔401
Convert octal "101" into hexadecimal - answer✔41
What value in decimal is the signed-magnitude number 110? - answer✔-2
Assume that "173" is a hexadecimal number. What is it in binary? - answer✔101110011
Assume that "173" is an octal number. What is it in binary? - answer✔1111011
What value in decimal is the 2's complement number 110? - answer✔-2
what is the binary number 101010101010101 in hexadecimal? - answer✔5555
what does the acronym "ASCII" mean? - answer✔American Standard Code for Information
Interchange
1|Page
, ©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
How is a Hexadecimal number identified? - answer✔with a 0x prefix
a zero in front of a number, i.e. 0222, indicates what? - answer✔an octal number.
If we use 2's complement for signed integers, we... - answer✔...can use addition rules for
subtracting.
what decimal result do I get when I add 010 and 101 - assuming both are in signed magnitude? -
answer✔1
why can't we just keep compressing data over and over? - answer✔When the limit of
redundancy has been reached for the encoding scheme, no more compression can be achieved
and the data volume may actually increase.
With fixed-length codes, use shorter bit sequences for high probability choices, longer
sequences for less probable choices. - answer✔False
in encoding we try to reduce redundancy in order to gain a more compact code. Are there
scenarios when we might want to increase redundancy? - answer✔Error detection schemes
increase redundancy.
Match the engineer and scientist's names with what they did.
1 Viterbi
2 Reed-Solomon
3 Hamming
4 Huffman
5 Shannon - answer✔1. error correction decoding from trellis encoded data
2. error detection encoding.
3. Developer of the notion of a distance measure for incorrect bits in a received word.
4. Implemented a scheme to match probabilities to variable-length codewords.
5. Known as the father of information theory.
what are the advantages of using voltage as a representation scheme? - answer✔potentially
low power in steady state.
The goal of modular design is abstention. - answer✔False, abstraction
What maintains the obligations and responsibilities of every system component? -
answer✔Contracts
2|Page
ALL RIGHTS RESERVED.
Digital Logic Design Exam Questions And
Answers (Guaranteed A+)
"6004" is: - answer✔the course at MIT that ELEN3431 is modeled after.
What makes a good system design? - 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
Does Engineering ever use tricks to get the job done? - answer✔Yes
Hierarchical design yields: - answer✔limited complexity at each level and reusable building
blocks
Key elements of system engineering typically outlive the technologies they interface to. -
answer✔True
What is the binary 101010101010101 in octal? - answer✔52525
convert hexadecimal 101 into octal. - answer✔401
Convert octal "101" into hexadecimal - answer✔41
What value in decimal is the signed-magnitude number 110? - answer✔-2
Assume that "173" is a hexadecimal number. What is it in binary? - answer✔101110011
Assume that "173" is an octal number. What is it in binary? - answer✔1111011
What value in decimal is the 2's complement number 110? - answer✔-2
what is the binary number 101010101010101 in hexadecimal? - answer✔5555
what does the acronym "ASCII" mean? - answer✔American Standard Code for Information
Interchange
1|Page
, ©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
How is a Hexadecimal number identified? - answer✔with a 0x prefix
a zero in front of a number, i.e. 0222, indicates what? - answer✔an octal number.
If we use 2's complement for signed integers, we... - answer✔...can use addition rules for
subtracting.
what decimal result do I get when I add 010 and 101 - assuming both are in signed magnitude? -
answer✔1
why can't we just keep compressing data over and over? - answer✔When the limit of
redundancy has been reached for the encoding scheme, no more compression can be achieved
and the data volume may actually increase.
With fixed-length codes, use shorter bit sequences for high probability choices, longer
sequences for less probable choices. - answer✔False
in encoding we try to reduce redundancy in order to gain a more compact code. Are there
scenarios when we might want to increase redundancy? - answer✔Error detection schemes
increase redundancy.
Match the engineer and scientist's names with what they did.
1 Viterbi
2 Reed-Solomon
3 Hamming
4 Huffman
5 Shannon - answer✔1. error correction decoding from trellis encoded data
2. error detection encoding.
3. Developer of the notion of a distance measure for incorrect bits in a received word.
4. Implemented a scheme to match probabilities to variable-length codewords.
5. Known as the father of information theory.
what are the advantages of using voltage as a representation scheme? - answer✔potentially
low power in steady state.
The goal of modular design is abstention. - answer✔False, abstraction
What maintains the obligations and responsibilities of every system component? -
answer✔Contracts
2|Page
