What is the primary function of the Data Link layer in the OSI model?

• Routing

• Error detection and correction

• Flow control

• All of the above

Which of the following transmission modes is used for simultaneous transmission and reception of data?

• Simplex

• Half-duplex

• Full-duplex

• Duplex

Which of the following types of networks uses a central device to connect multiple devices?

• Bus topology

• Star topology

• Ring topology

• Mesh topology

Which of the following types of transmission media uses light waves to transmit data?

• Twisted pair cable

• Coaxial cable

• Fiber optic cable

• Wireless

What is the purpose of the checksum in data communication?

• Error detection

• Error correction

• Flow control

• Routing

The process of converting digital data into analog signals for transmission over analog communication links is called ___.

The OSI model layer responsible for providing error-free transfer of data frames between two devices on the same network is the ___ layer.

What is the primary function of the Physical layer in the OSI model?

• Routing

• Error detection and correction

• Bit-level transmission and reception

• Flow control

Which of the following data transmission methods is used for transmitting data in both directions, but not simultaneously?

• Simplex

• Half-duplex

• Full-duplex

• Duplex

What is the term for the maximum distance that a signal can travel over a transmission medium without degradation?

• Attenuation

• Distortion

• Noise

• Bandwidth