Which of the following scenarios best illustrates the use of a digital signal in modern communication systems?

• Analog voice transmission over a telephone line.

• Text data storage in a computer's hard drive.

• Radio broadcast using AM modulation.

• Audio signal transmission over a traditional radio.

If a network technician wants to establish a network connection that allows simultaneous data transmission in both directions, which transmission mode should be used?

• Simplex Mode

• Half-duplex Mode

• Full-duplex Mode

• Parallel Mode

Which propagation method would be most effective for a communication system that needs to cover a large geographic area with minimal interference from atmospheric conditions?

• Line of Sight Propagation

• Wide Area Network

• SkyWave Propagation

• Space Wave Propagation

A company is considering using Bluetooth technology for inter-device communication. What should they be aware of regarding its frequency range?

• Bluetooth operates at frequencies higher than 30 GHz.

• Bluetooth uses a frequency range similar to that of Wi-Fi.

• Bluetooth operates within the Very Low Frequency (VLF) range.

• Bluetooth uses the 2.4 GHz frequency band.

A new technology is being implemented to reduce interference in a network by using both twisting and shielding techniques. What type of cable is likely being used?

• Unshielded Twisted-Pair (UTP) Cable

• Fiber Optic Cable

• Coaxial Cable

• Shielded Twisted-Pair (STP) Cable

Which type of signal would be most appropriate for representing voice communication in a traditional telephone system?

• Digital Signal

• Electrical Signal

• Acoustic Signal

• Video Signal

Which transmission type is characterized by sending data bits one after another over a single channel?

• Parallel Transmission

• Serial Transmission

• Full-Duplex Transmission

• Half-Duplex Transmission

A network engineer needs to choose a technology for high-speed data transmission with minimal signal degradation over long distances. What is the best option?

• Shielded Twisted-Pair (STP) Cable

• Unshielded Twisted-Pair (UTP) Cable

• Fiber Optic Cable

• Coaxial Cable

For a local area network (LAN) that requires flexibility and low cost, which type of cable would be most appropriate?

• Fiber Optic Cable

• Coaxial Cable

• Unshielded Twisted-Pair (UTP) Cable

• Shielded Twisted-Pair (STP) Cable

If a network communication protocol is experiencing significant delays and errors due to signal interference, what is the most likely issue with the network medium?

• High signal amplitude

• Low frequency range

• Inadequate shielding or insulation

• Excessive wavelength