TM111 TMA 01 Marked Assignment with Tutor Feedback |
Questions and Answers | 2026 Update - The Open University. - 47
Questions and Answers Already Graded A+ Premium Exam
Tested And Verified
Subject Area TM111 TMA 01 Marked Assignment with Tutor Feedback | Questions and
Answers | 2026 Update - The Open University.
Description Comprehensive examination on TM111 TMA 01 Marked Assignment with Tutor
Feedback | Questions and Answers | 2026 Update - The Open University..
Expected Grade A+
Total Questions 47
Duration 3 hours
Learning Outcomes 1. Demonstrate mastery of core concepts
Accreditation Aligned with US university standards.
Page 1
,Question 1 of 47
In binary addition of two 4-bit signed integers using two's complement, the carry into the most
significant bit is 1 and the carry out is 0. Which statement is true?
A. Overflow has occurred.
B. No overflow, the result is correct.
C. The result is negative and no overflow.
D. A borrow occurred during the addition.
The correct answer is:
Correct Action: Overflow has occurred.
Rationales
• Overflow has occurred. (Correct):
This is the correct action. Overflow in signed addition occurs when the carry into the MSB differs from the carry out. Here,
carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D describes subtraction, not addition.
• No overflow, the result is correct. (Incorrect):
This option is not appropriate. Here, carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D
describes subtraction, not addition
• The result is negative and no overflow. (Incorrect):
This option is not appropriate. Here, carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D
describes subtraction, not addition
• A borrow occurred during the addition. (Incorrect):
This option is not appropriate. Here, carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D
describes subtraction, not addition
Page 2
,Question 2 of 47
A streaming service stores audio files. To reduce bandwidth, they apply a compression algorithm that
discards frequencies inaudible to humans. This compression is best described as:
A. Lossless compression using Huffman coding.
B. Lossy compression using perceptual coding.
C. Lossy compression using run-length encoding.
D. Lossless compression using dictionary-based methods.
The correct answer is:
Correct Action: Lossy compression using perceptual coding.
Rationales
• Lossy compression using perceptual coding. (Correct):
This is the correct action. Discarding inaudible frequencies is perceptual coding, a form of lossy compression. Huffman and
dictionary methods are lossless; run-length encoding is also lossless and does not involve perceptual models.
• Lossless compression using Huffman coding. (Incorrect):
This option is not appropriate. Huffman and dictionary methods are lossless; run-length encoding is also lossless and does
not involve perceptual models.
• Lossy compression using run-length encoding. (Incorrect):
This option is not appropriate. Huffman and dictionary methods are lossless; run-length encoding is also lossless and does
not involve perceptual models.
• Lossless compression using dictionary-based methods. (Incorrect):
This option is not appropriate. Huffman and dictionary methods are lossless; run-length encoding is also lossless and does
not involve perceptual models.
Page 3
, Question 3 of 47
A network administrator has a subnet with prefix length /28. How many usable host addresses does
this subnet provide?
A. 14
B. 16
C. 30
D. 62
The correct answer is:
Correct Action: 14
Rationales
• 14 (Correct):
This is the correct action. A /28 prefix leaves 4 bits for host addresses, yielding 2^4 = 16 total addresses. After removing
the network and broadcast addresses, 14 are usable. B is the total address count; C and D correspond to /27 and /26 subnets.
• 16 (Incorrect):
This option is not appropriate. After removing the network and broadcast addresses, 14 are usable. B is the total address
count; C and D correspond to /27 and /26 subnets
• 30 (Incorrect):
This option is not appropriate. After removing the network and broadcast addresses, 14 are usable. B is the total address
count; C and D correspond to /27 and /26 subnets
• 62 (Incorrect):
This option is not appropriate. After removing the network and broadcast addresses, 14 are usable. B is the total address
count; C and D correspond to /27 and /26 subnets
Page 4
Questions and Answers | 2026 Update - The Open University. - 47
Questions and Answers Already Graded A+ Premium Exam
Tested And Verified
Subject Area TM111 TMA 01 Marked Assignment with Tutor Feedback | Questions and
Answers | 2026 Update - The Open University.
Description Comprehensive examination on TM111 TMA 01 Marked Assignment with Tutor
Feedback | Questions and Answers | 2026 Update - The Open University..
Expected Grade A+
Total Questions 47
Duration 3 hours
Learning Outcomes 1. Demonstrate mastery of core concepts
Accreditation Aligned with US university standards.
Page 1
,Question 1 of 47
In binary addition of two 4-bit signed integers using two's complement, the carry into the most
significant bit is 1 and the carry out is 0. Which statement is true?
A. Overflow has occurred.
B. No overflow, the result is correct.
C. The result is negative and no overflow.
D. A borrow occurred during the addition.
The correct answer is:
Correct Action: Overflow has occurred.
Rationales
• Overflow has occurred. (Correct):
This is the correct action. Overflow in signed addition occurs when the carry into the MSB differs from the carry out. Here,
carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D describes subtraction, not addition.
• No overflow, the result is correct. (Incorrect):
This option is not appropriate. Here, carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D
describes subtraction, not addition
• The result is negative and no overflow. (Incorrect):
This option is not appropriate. Here, carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D
describes subtraction, not addition
• A borrow occurred during the addition. (Incorrect):
This option is not appropriate. Here, carry-in=1, carry-out=0, indicating overflow. Options B and C ignore this condition; D
describes subtraction, not addition
Page 2
,Question 2 of 47
A streaming service stores audio files. To reduce bandwidth, they apply a compression algorithm that
discards frequencies inaudible to humans. This compression is best described as:
A. Lossless compression using Huffman coding.
B. Lossy compression using perceptual coding.
C. Lossy compression using run-length encoding.
D. Lossless compression using dictionary-based methods.
The correct answer is:
Correct Action: Lossy compression using perceptual coding.
Rationales
• Lossy compression using perceptual coding. (Correct):
This is the correct action. Discarding inaudible frequencies is perceptual coding, a form of lossy compression. Huffman and
dictionary methods are lossless; run-length encoding is also lossless and does not involve perceptual models.
• Lossless compression using Huffman coding. (Incorrect):
This option is not appropriate. Huffman and dictionary methods are lossless; run-length encoding is also lossless and does
not involve perceptual models.
• Lossy compression using run-length encoding. (Incorrect):
This option is not appropriate. Huffman and dictionary methods are lossless; run-length encoding is also lossless and does
not involve perceptual models.
• Lossless compression using dictionary-based methods. (Incorrect):
This option is not appropriate. Huffman and dictionary methods are lossless; run-length encoding is also lossless and does
not involve perceptual models.
Page 3
, Question 3 of 47
A network administrator has a subnet with prefix length /28. How many usable host addresses does
this subnet provide?
A. 14
B. 16
C. 30
D. 62
The correct answer is:
Correct Action: 14
Rationales
• 14 (Correct):
This is the correct action. A /28 prefix leaves 4 bits for host addresses, yielding 2^4 = 16 total addresses. After removing
the network and broadcast addresses, 14 are usable. B is the total address count; C and D correspond to /27 and /26 subnets.
• 16 (Incorrect):
This option is not appropriate. After removing the network and broadcast addresses, 14 are usable. B is the total address
count; C and D correspond to /27 and /26 subnets
• 30 (Incorrect):
This option is not appropriate. After removing the network and broadcast addresses, 14 are usable. B is the total address
count; C and D correspond to /27 and /26 subnets
• 62 (Incorrect):
This option is not appropriate. After removing the network and broadcast addresses, 14 are usable. B is the total address
count; C and D correspond to /27 and /26 subnets
Page 4
