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Data Communication MCQs with Answers

Practice important Data Communication MCQs with answers and explanations.

Multiple Choice Questions

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Q3081: An STS-1 frame consists of _______.
  • A: 9 rows and 90 columns
  • B: 9 rows and 270 columns
  • C: 9 rows and 81 columns
  • D: 10 rows and 90 columns
View Answer
A

Q3082: How many bytes are there in an STS-1 frame?
  • A: 810 bytes
  • B: 2430 bytes
  • C: 720 bytes
  • D: 819 bytes
View Answer
A

Q3083: What is the size of an STS-3 frame?
  • A: 9 rows by 270 columns (2430 bytes)
  • B: 9 rows by 90 columns (810 bytes)
  • C: 9 rows by 180 columns (1620 bytes
  • D: 9 rows by 360 columns (3240 bytes)
View Answer
A

Q3084: Fill in the blank: The STS-1 frame consists of _______ bytes.
  • A: 810 bytes
  • B: 2430 bytes
  • C: 640 bytes
  • D: 1024 bytes
View Answer
A

Q3085: Fill in the blank: Each STS frame is a _______ matrix with 9 rows.
  • A: 2D
  • B: 3D
  • C: 1D
  • D: Flat
View Answer
A

Q3086: The data rate of an STS-1 signal is calculated by _______.
  • A: Multiplying the frame size by the number of frames per second
  • B: Multiplying the column size by the number of rows
  • C: Multiplying the number of rows by the bytes in each column
  • D: Dividing the total frame size by the number of frames
View Answer
B

Q3087: The data rate of an STS-3 signal can be calculated by _______.
  • A: Multiplying the frame size of STS-1 by 3
  • B: Multiplying the frame size of STS-3 by 2
  • C: Multiplying the column size by 3
  • D: Dividing the number of frames by 3
View Answer
A

Q3088: How is the frame structure in STS signals arranged?
  • A: It is a matrix with 9 rows and columns of varying lengths
  • B: A linear sequence of bytes
  • C: A random distribution of data
  • D: Multiple segments with individual bytes
View Answer
A

Q3089: Which of the following is the correct frame size for an STS-1 signal?
  • A: 9 rows by 90 columns (810 bytes)
  • B: 9 rows by 270 columns (2430 bytes)
  • C: 8 rows by 80 columns (640 bytes)
  • D: 9 rows by 80 columns (720 bytes)
View Answer
A

Q3090: An STS-n frame has _______ rows by _______ columns, with n representing the level of the signal.
  • A: 9, 90×n
  • B: 9, 270×n
  • C: 9, 80×n
  • D: 10, 100×n
View Answer
A

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