Digital Communications Quiz

What is the term used to describe the use of digital technology to send messages between two or more devices?

• Digital communication

• Analog communication

• Device messaging

• Binary signaling

Which of the following is a characteristic of digital communications?

• Signals travel as continuous waves

• Signals are prone to degradation over distance

• Signals are represented in binary format

• Signals cannot be encrypted

What is a benefit of digital communications over analog communications?

• Lower quality of signal

• More susceptible to interference

• Easier to manipulate with software

• Limited to short-distance transmission

Which of the following is NOT a type of digital communication?

• Email

• Instant messaging

• Smoke signals

• Social media

What is the main advantage of using fiber optic cables for digital communications?

• They are less expensive than copper cables

• They can carry signals over very long distances without loss

• They are easier to splice than copper cables

• They use analog signals instead of digital

What is the purpose of a firewall in network security?

• To serve web pages to internal clients

• To optimize website performance

• To prevent unauthorized access to or from a private network

• To provide email services to users

Which of the following is a use of NAS in a home environment?

• To host websites

• To store and share files

• To provide dynamic host configuration

• To filter content

What is the primary function of a switch in a network?

• To connect multiple devices on the same network within a building or campus

• To connect a local network to the Internet

• To assign IP addresses to devices on a network

• To provide a firewall and security

What is the main role of a router in a network?

• To provide a user interface for network management

• To connect multiple networks and route network traffic between them

• To store files for network users

• To manage print jobs across the network

Which device is used to modulate and demodulate digital data from or to analog signals for transmission over phone lines?

• Router

• Switch

• Modem

• Firewall