Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 201
Q3101:
In SONET, lower-rate frames can be multiplexed into a higher-rate frame using _______.
A. Time division multiplexing
B. Frequency division multiplexing
C. Statistical multiplexing
D. Spatial division multiplexing
Correct Answer:
A
Chapter: 201
Q3102:
Which of the following is an example of SONET multiplexing?
A. Three STS-1 signals combined into one STS-3 signal
B. One STS-3 signal combined into one STS-12 signal
C. Two STS-1 signals combined into one STS-6 signal
D. Three STS-3 signals combined into one STS-1 signal
Correct Answer:
A
Chapter: 201
Q3103:
Fill in the blank: In SONET, three STS-1 signals can be multiplexed into one _______ signal.
A. STS-3
B. STS-12
C. STS-6
D. STS-1
Correct Answer:
A
Chapter: 201
Q3104:
Fill in the blank: In SONET, four STS-3 signals can be multiplexed into one _______ signal.
A. STS-12
B. STS-6
C. STS-1
D. STS-3
Correct Answer:
A
Chapter: 201
Q3105:
The process of combining lower-rate signals into higher-rate signals in SONET is called _______.
A. Multiplexing
B. Demultiplexing
C. Signal shifting
D. Signal aggregation
Correct Answer:
A
Chapter: 201
Q3106:
Which of the following is true about SONET multiplexing?
A. Multiple lower-rate channels can be combined into a higher-rate channel.
B. Only one lower-rate channel can be multiplexed into one higher-rate channel.
C. Each SONET signal is fixed and cannot be combined.
D. Multiplexing is not supported in SONET.
Correct Answer:
A
Chapter: 201
Q3107:
What is the primary purpose of multiplexing in SONET?
A. To combine multiple lower-rate signals into one higher-rate signal
B. To convert analog signals into digital
C. To separate signals based on frequency
D. To enhance the data security of each signal
Correct Answer:
A
Chapter: 201
Q3108:
Which of the following is NOT a multiplexing technique used in SONET?
A. Time division multiplexing
B. Frame-by-frame multiplexing
C. Frequency division multiplexing
D. Frame interleaving
Correct Answer:
D
Chapter: 201
Q3109:
Fill in the blank: In SONET, STS-1, STS-3, and STS-12 refer to different _______ rates.
A. Signal
B. Data
C. Transmission
D. Multiplexing
Correct Answer:
A
Chapter: 201
Q3110:
In SONET, the term "STS" stands for _______.
A. Synchronous Transport Signal
B. Synchronous Time Signal
C. Secure Transmission System
D. Synchronization Transport System
Correct Answer:
A
Chapter: 201
Q3111:
Which of the following describes the function of an Add/Drop Multiplexer (ADM) in SONET?
A. It adds or drops specific channels from a higher-rate signal without disturbing the entire frame.
B. It multiplies data rate of signals.
C. It creates multiple copies of signals for redundancy.
D. It handles the compression of signals.
Correct Answer:
A
Chapter: 201
Q3112:
Fill in the blank: In SONET, Byte Interleaving is used for _______ multiplexing.
A. STS signals
B. Optical carriers
C. SDH signals
D. Frame signals
Correct Answer:
A
Chapter: 201
Q3113:
The combination of lower-rate STS signals into higher-rate STS signals in SONET is an example of _______.
A. Multiplexing
B. Demultiplexing
C. Frame separation
D. Signal splitting
Correct Answer:
A
Chapter: 201
Q3114:
Which of the following statements is true about Byte Interleaving in SONET?
A. Byte Interleaving is used to combine bits from multiple channels into one higher-rate frame.
B. Byte Interleaving is used to split signals into individual frames.
C. Byte Interleaving is a form of encryption for SONET data.
D. Byte Interleaving is not used in SONET.
Correct Answer:
A
Chapter: 201
Q3115:
Fill in the blank: The SONET multiplexing process allows for the combination of multiple _______ rate signals into a higher-rate signal.
A. Lower
B. Fixed
C. Variable
D. Higher
Correct Answer:
A
Chapter: 201
Q3116:
Which of the following is a primary function of SONET multiplexing?
A. Combining multiple lower-rate signals into one higher-rate signal.
B. Changing the format of the signal to analog.
C. Converting signal frequency for synchronization.
D. Encrypting signals for security.
Correct Answer:
A
Chapter: 201
Q3117:
In SONET, which signal type can be used for multiplexing?
A. STS-1
B. STS-3
C. STS-12
D. All of the above
Correct Answer:
D
Chapter: 201
Q3118:
The process of demultiplexing in SONET involves _______.
A. Separating a higher-rate signal into its lower-rate components
B. Combining lower-rate signals into a higher-rate signal
C. Shifting signal frequencies
D. Encrypting signals for data security
Correct Answer:
A
Chapter: 201
Q3119:
Fill in the blank: The SONET system allows for the efficient _______ of signals to meet bandwidth requirements.
A. Multiplexing
B. Compression
C. Encryption
D. Conversion
Correct Answer:
A
Chapter: 201
Q3120:
What is the main advantage of SONET multiplexing?
A. It increases the efficiency of signal transmission by allowing multiple lower-rate signals to be combined into one higher-rate signal.
B. It decreases the complexity of signal routing.
C. It converts analog signals into digital without the need for processing.
D. It ensures secure transmission of data.
Correct Answer:
A