Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 19
Q241:
Which of the following is true about protocol layering?
A. It simplifies the implementation of communication systems
B. It creates a uniform protocol for all layers
C. It reduces the need for intermediaries
D. It handles all tasks with one protocol
Correct Answer:
A
Chapter: 19
Q242:
What is an example of protocol layering in a communication system?
A. Sending a letter with multiple steps
B. Using one protocol for the entire communication
C. Transmitting a file over FTP
D. Using different protocols for each part of communication
Correct Answer:
D
Chapter: 19
Q243:
Fill in the blank: In a protocol layering system, each layer _______ its function to facilitate communication.
A. Performs
B. Stores data
C. Monitors traffic
D. Secures information
Correct Answer:
A
Chapter: 19
Q244:
Which of the following is a correct example of how protocol layering works?
A. Protocols for encryption and transmission at different layers
B. Using one protocol for both sending and receiving
C. Using the same protocol for routing and security
D. No need for protocols in layering systems
Correct Answer:
A
Chapter: 19
Q245:
Fill in the blank: Protocol Layering allows different _______ to operate independently while communicating within the same system.
A. Layers
B. Devices
C. Messages
D. Tasks
Correct Answer:
A
Chapter: 19
Q246:
What is the role of each layer in protocol layering?
A. To handle a specific task in the communication process
B. To create a universal protocol for all tasks
C. To make sure only one protocol is used
D. To manage user preferences
Correct Answer:
A
Chapter: 19
Q247:
Which of the following statements best describes the concept of protocol layering?
A. A method to organize protocols at different levels for efficient communication
B. A way to use a single protocol for all tasks
C. A technique to eliminate network delays
D. A system to secure communication
Correct Answer:
A
Chapter: 19
Q248:
Fill in the blank: In protocol layering, the lower layers deal with _______ while the higher layers handle user data.
A. Transmission and routing
B. Encryption and error detection
C. Application and presentation
D. Routing and addressing
Correct Answer:
A
Chapter: 19
Q249:
What would happen if one layer in a protocol layering system fails?
A. It could disrupt communication at that layer but not affect others
B. It would slow down the entire system
C. It would corrupt all the data being transmitted
D. It would require new protocols
Correct Answer:
A
Chapter: 19
Q250:
Fill in the blank: Each layer in the protocol layering model communicates with the layers _______.
A. Directly above and below it
B. Only the one below it
C. Only the one above it
D. Through a network protocol
Correct Answer:
A
Chapter: 19
Q251:
Which of the following is true about layering in communication systems?
A. Each layer handles different tasks and interacts with other layers
B. Every layer has the same function
C. Protocol layering is not necessary in modern networks
D. Protocol layering creates only one communication path
Correct Answer:
A
Chapter: 20
Q252:
What is one of the advantages of modularity in network protocols?
A. Easier management of separate components
B. More complex system design
C. Increased dependency between components
D. Higher operational costs
Correct Answer:
A
Chapter: 20
Q253:
Fill in the blank: Modularity in network systems allows _______ between different system components.
A. Independent operation
B. Complete integration
C. Simultaneous updates
D. Direct communication
Correct Answer:
A
Chapter: 20
Q254:
Which of the following is an advantage of separating service and implementation in a system?
A. Simplifies maintenance and upgrades
B. Increases network traffic
C. Reduces network speed
D. Makes the system less flexible
Correct Answer:
A
Chapter: 20
Q255:
Fill in the blank: Separation of service and implementation in network protocols allows for easier _______.
A. Maintenance and updates
B. Data transmission
C. Monitoring of network usage
D. Network design
Correct Answer:
A
Chapter: 20
Q256:
What is a key benefit of reduced complexity and cost in network systems?
A. Simpler to design and maintain
B. More expensive to run
C. Harder to scale
D. Increases the need for troubleshooting
Correct Answer:
A
Chapter: 20
Q257:
Which of the following is a disadvantage of modularity in network systems?
A. None
B. Increased complexity
C. High dependency between modules
D. Higher implementation time
Correct Answer:
A
Chapter: 20
Q258:
Fill in the blank: A modular design approach in networking can lead to a _______ in system updates.
A. Decrease in complexity
B. Increase in compatibility
C. Decrease in flexibility
D. Increase in cost
Correct Answer:
A
Chapter: 20
Q259:
Which of the following is NOT an advantage of modularity in network design?
A. Reduced complexity and cost
B. Easier maintenance and upgrades
C. High interdependence of modules
D. Flexibility in adding new features
Correct Answer:
C
Chapter: 20
Q260:
Fill in the blank: Reducing complexity in network protocols helps to _______ the overall system cost.
A. Lower
B. Increase
C. Maintain
D. Raise
Correct Answer:
A