Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 28
Q361:
Which of the following is a key characteristic of data communication?
A. Reliable transmission
B. Device interconnectivity
C. Network security
D. Software management
Correct Answer:
A
Chapter: 28
Q362:
Fill in the blank: A computer network can be used to _______ between multiple devices, enabling shared resources.
A. establish communication
B. transmit data
C. power devices
D. encrypt communications
Correct Answer:
A
Chapter: 28
Q363:
What would be a primary use case of data communication?
A. Streaming videos over the internet
B. Sharing data across local devices
C. Connecting multiple computers to a server
D. Setting up a Wi-Fi network
Correct Answer:
B
Chapter: 29
Q364:
What is the primary function of the physical layer in communication?
A. Transmitting raw data
B. Providing error correction
C. Routing data between networks
D. Managing network protocols
Correct Answer:
A
Chapter: 29
Q365:
Which of the following is an example of a physical medium for communication?
A. Copper cables
B. IP addresses
C. Protocols used for encryption
D. Routing tables
Correct Answer:
A
Chapter: 29
Q366:
Fill in the blank: The physical layer is the _______ layer in the OSI model.
A. first
B. second
C. third
D. fourth
Correct Answer:
A
Chapter: 29
Q367:
Which device operates at the physical layer of the OSI model?
A. Hub
B. Router
C. Switch
D. Bridge
Correct Answer:
A
Chapter: 29
Q368:
The physical layer deals with the _______ of data across the communication medium.
A. transmission
B. encryption
C. routing
D. session management
Correct Answer:
A
Chapter: 29
Q369:
Fill in the blank: _______ is the process of converting data into signals for transmission at the physical layer.
A. Encoding
B. Decoding
C. Error detection
D. Packetization
Correct Answer:
A
Chapter: 29
Q370:
What is the role of a modem at the physical layer?
A. Modulate and demodulate signals
B. Route packets through the network
C. Provide encryption for data
D. Direct data flow between applications
Correct Answer:
A
Chapter: 29
Q371:
Which of the following is NOT a responsibility of the physical layer?
A. Managing flow control
B. Transmitting raw bits over a physical medium
C. Converting digital data into analog signals
D. Maintaining signal integrity
Correct Answer:
A
Chapter: 29
Q372:
Fill in the blank: The physical layer transmits data in the form of _______ across various media.
A. signals
B. packets
C. frames
D. messages
Correct Answer:
A
Chapter: 29
Q373:
Which type of signal is typically used in the physical layer for data transmission?
A. Analog or digital signals
B. Encrypted signals
C. Compressed data
D. Application-specific signals
Correct Answer:
A
Chapter: 29
Q374:
The process of converting digital data into analog signals is called _______.
A. Modulation
B. Multiplexing
C. Compression
D. Routing
Correct Answer:
A
Chapter: 29
Q375:
Fill in the blank: The physical layer operates on _______ data units in the OSI model.
A. bits
B. frames
C. packets
D. segments
Correct Answer:
A
Chapter: 29
Q376:
Which of the following transmission methods is associated with the physical layer?
A. Optical fiber transmission
B. HTTP data transfer
C. DNS query resolution
D. File encryption
Correct Answer:
A
Chapter: 29
Q377:
The physical layer determines which physical medium will be used for communication, such as _______ or wireless.
A. cables
B. routing tables
C. error checking algorithms
D. data encoding techniques
Correct Answer:
A
Chapter: 29
Q378:
Fill in the blank: The physical layer is responsible for defining _______ for electrical, mechanical, and procedural operations.
A. specifications
B. protocols
C. algorithms
D. communication standards
Correct Answer:
A
Chapter: 30
Q379:
Analog data is characterized by being _______.
A. continuous
B. discrete
C. digital
D. encoded
Correct Answer:
A
Chapter: 30
Q380:
Digital data is characterized by being _______.
A. continuous
B. discrete
C. analog
D. encoded
Correct Answer:
B