Digital Logic Design Exam Questions
and Answers 100% Solved | Graded A+
"6004" is: - ✔✔the course at MIT that ELEN3431 is modeled after.
What makes a good system design? - ✔✔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? - ✔✔Yes
Hierarchical design yields: - ✔✔limited complexity at each level and
reusable building blocks
Key elements of system engineering typically outlive the technologies they
interface to. - ✔✔True
What is the binary 101010101010101 in octal? - ✔✔52525
convert hexadecimal 101 into octal. - ✔✔401
Convert octal "101" into hexadecimal - ✔✔41
What value in decimal is the signed-magnitude number 110? - ✔✔-2
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,Assume that "173" is a hexadecimal number. What is it in binary? -
✔✔101110011
Assume that "173" is an octal number. What is it in binary? - ✔✔1111011
What value in decimal is the 2's complement number 110? - ✔✔-2
what is the binary number 101010101010101 in hexadecimal? - ✔✔5555
what does the acronym "ASCII" mean? - ✔✔American Standard Code for
Information Interchange
How is a Hexadecimal number identified? - ✔✔with a 0x prefix
a zero in front of a number, i.e. 0222, indicates what? - ✔✔an octal
number.
If we use 2's complement for signed integers, we... - ✔✔...can use addition
rules for subtracting.
what decimal result do I get when I add 010 and 101 - assuming both are in
signed magnitude? - ✔✔1
why can't we just keep compressing data over and over? - ✔✔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.
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, With fixed-length codes, use shorter bit sequences for high probability
choices, longer sequences for less probable choices. - ✔✔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? -
✔✔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 - ✔✔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? -
✔✔potentially low power in steady state.
3
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
and Answers 100% Solved | Graded A+
"6004" is: - ✔✔the course at MIT that ELEN3431 is modeled after.
What makes a good system design? - ✔✔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? - ✔✔Yes
Hierarchical design yields: - ✔✔limited complexity at each level and
reusable building blocks
Key elements of system engineering typically outlive the technologies they
interface to. - ✔✔True
What is the binary 101010101010101 in octal? - ✔✔52525
convert hexadecimal 101 into octal. - ✔✔401
Convert octal "101" into hexadecimal - ✔✔41
What value in decimal is the signed-magnitude number 110? - ✔✔-2
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,Assume that "173" is a hexadecimal number. What is it in binary? -
✔✔101110011
Assume that "173" is an octal number. What is it in binary? - ✔✔1111011
What value in decimal is the 2's complement number 110? - ✔✔-2
what is the binary number 101010101010101 in hexadecimal? - ✔✔5555
what does the acronym "ASCII" mean? - ✔✔American Standard Code for
Information Interchange
How is a Hexadecimal number identified? - ✔✔with a 0x prefix
a zero in front of a number, i.e. 0222, indicates what? - ✔✔an octal
number.
If we use 2's complement for signed integers, we... - ✔✔...can use addition
rules for subtracting.
what decimal result do I get when I add 010 and 101 - assuming both are in
signed magnitude? - ✔✔1
why can't we just keep compressing data over and over? - ✔✔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.
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, With fixed-length codes, use shorter bit sequences for high probability
choices, longer sequences for less probable choices. - ✔✔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? -
✔✔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 - ✔✔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? -
✔✔potentially low power in steady state.
3
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
