Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q3091: What is the role of the frame size in determining the data rate of an STS signal?
- A: The larger the frame, the higher the data rate
- B: The smaller the frame, the higher the data rate
- C: The frame size is unrelated to data rate
- D: The frame size only affects transmission quality
View Answer
A
Q3092: Fill in the blank: To calculate the data rate of an STS-n signal, you must multiply the frame size by _______.
- A: The number of frames per second
- B: Power of the signal
- C: Column size
- D: The total bytes in the frame
View Answer
A
Q3093: Which of the following is true about the STS-1 and STS-3 frame structures?
- A: STS-3 has more columns than STS-1
- B: STS-1 has fewer bytes than STS-3
- C: STS-3 has a smaller frame size than STS-1
- D: STS-1 and STS-3 have the same number of frames
View Answer
A
Q3094: The size of an STS-3 frame is _______.
- A: 9 rows by 270 columns (2430 bytes)
- B: 9 rows by 90 columns (810 bytes)
- C: 10 rows by 270 columns (2430 bytes)
- D: 8 rows by 270 columns (2430 bytes)
View Answer
A
Q3095: What is the purpose of the "rows by columns" structure in an STS frame?
- A: It organizes the data into manageable units for transfer
- B: Stores data in separate partitions for security
- C: Divides the data into logical layers for encryption
- D: Assists with compression and data packing
View Answer
A
Q3096: Which of the following statements is correct about STS signals?
- A: STS-1 has a smaller data rate than STS-3
- B: STS-1 and STS-3 have identical data rates
- C: STS-3 frames are smaller than STS-1 frames
- D: STS-1 has larger frames than STS-3
View Answer
A
Q3097: Fill in the blank: Each STS signal frame can be broken down into a matrix of _______ bytes.
- A: 810
- B: 2430
- C: 1620
- D: 640
View Answer
A
Q3098: How is the data rate of an STS-3 signal calculated?
- A: By multiplying the frame size of STS-1 by 3
- B: By adding the frame size of STS-1 to STS-3
- C: By dividing the frame size by 3
- D: By subtracting the frame size from STS-1
View Answer
A
Q3099: What determines the number of columns in an STS-n frame?
- A: The level n of the signal (e.g., STS-1, STS-3)
- B: The size of the signal's data rate
- C: The number of frames per second
- D: Length of each frame
View Answer
A
Q3100: The frame size of an STS-n signal is determined by _______.
- A: The number of frames in the signal
- B: The level of the signal (n) and its frame structure
- C: The number of sections in the signal
- D: The bytes per column and rows in the frame
View Answer
B