Exploring Communications Technology

What is the primary function of a modem?

• The primary function of a modem is to convert digital data from a computer into analog for transmission and vice versa.

• To provide wireless internet connectivity.

• To store data for long-term access.

• To amplify the signal for better reception.

Define bandwidth in the context of communications technology.

• Bandwidth is the maximum rate of data transfer across a communication channel, measured in bits per second.

• Bandwidth is the total number of devices connected to a network.

• Bandwidth is the amount of data stored on a device.

• Bandwidth refers to the physical distance between two communication devices.

What technology is used for wireless communication over short distances?

• Satellite Communication

• Bluetooth and Near Field Communication (NFC)

• Cellular Data

• Wi-Fi

Explain the difference between analog and digital signals.

• Analog signals represent information in hexadecimal form.

• Digital signals can take any value continuously.

• Analog signals are continuous and can take any value, while digital signals are discrete and represent information in binary form.

• Analog signals are always digital in nature.

What is VoIP and how does it work?

• VoIP is a type of video conferencing software.

• VoIP is a protocol for sending emails over the internet.

• VoIP is a hardware device used for traditional phone lines.

• VoIP is a technology that enables voice communication over the internet by converting voice signals into digital data packets.

Name one advantage of fiber optic communication over copper cables.

• Higher bandwidth and faster data transmission.

• Easier to splice and repair than copper cables.

• Lower installation costs than copper cables.

• Less susceptibility to electromagnetic interference than copper.

What role does a router play in a network?

• A router acts as a firewall to block all incoming traffic.

• A router connects devices within a single network only.

• A router encrypts data for secure transmission.

• A router directs data packets between networks and manages traffic.

Describe the concept of latency in communications.

• Latency is the speed of the internet connection.

• Latency is the time delay in data transmission between sender and receiver.

• Latency refers to the amount of data that can be transmitted at once.

• Latency is the process of compressing data before transmission.

What is the purpose of encryption in data transmission?

• The purpose of encryption in data transmission is to protect the data from unauthorized access and ensure its confidentiality.

• To speed up data transmission

• To compress data for storage

• To enhance data visibility during transfer

How has 5G technology impacted mobile communications?

• 5G technology has decreased mobile communication speeds.

• 5G technology has improved mobile communications through faster speeds, lower latency, and greater capacity.

• 5G technology has increased latency in mobile networks.

• 5G technology has no effect on mobile communications.