Data Communications Quiz

Which of the following best describes data communication?

• Transmission of data between devices

• Storage of data

• Processing data internally

• Printing data only

In the communication model, what is the main function of the transmitter?

• Stores data

• Converts data into a signal

• Receives data

• Displays data

Which transmission mode allows simultaneous two-way communication?

• Simplex

• Half-Duplex

• Full-Duplex

• None

What causes signal weakening over distance?

• Noise

• Attenuation

• Delay

• Echo

Which topology combines features of star and bus networks?

• Tree

• Mesh

• Ring

• Hybrid

Multiplexing that allocates different time slots to signals is called:

• FDM

• WDM

• TDM

• SDM

Which method can detect and correct single-bit errors?

• Parity Check

• CRC

• Hamming Code

• Sliding Window

What protocol is responsible for reliable delivery in the transport layer?

• UDP

• TCP

• IP

• ARP

Which network type covers a small area like an office?

• WAN

• MAN

• LAN

• PAN

A topology where each device connects to a central hub is:

• Bus

• Star

• Ring

• Mesh