What is data communications?

The process of transmitting and receiving data between two or more devices

The process of storing data on a computer

The process of analyzing data for patterns and trends

The process of encrypting data for secure transmission

What is synchronous communication?

A type of communication where data is transmitted in a continuous stream

A type of communication where data is transmitted in discrete chunks

A type of communication that requires a clock signal for synchronization

A type of communication that uses parallel transmission

What is asynchronous communication?

A type of communication where data is transmitted in discrete chunks

A type of communication where data is transmitted in a continuous stream

A type of communication that requires a clock signal for synchronization

A type of communication that uses parallel transmission

What are the advantages of synchronous communication?

Higher data transfer rates

Less overhead due to start and stop bits

More efficient use of bandwidth

Flexibility in transmission speeds

Does not require synchronization between sender and receiver

What are the advantages of asynchronous communication?

Flexibility in transmission speeds

Does not require synchronization between sender and receiver

Allows for error detection and correction

Higher data transfer rates

More efficient use of bandwidth

What is the purpose of a modem in data communications?

To modulate and demodulate signals for transmission over a communication channel

To route data packets between networks

To convert digital signals to analog signals

To encrypt and decrypt data for secure transmission

What is the purpose of a router in data communications?

To route data packets between networks

To modulate and demodulate signals for transmission over a communication channel

To convert digital signals to analog signals

To encrypt and decrypt data for secure transmission

What is the difference between half-duplex and full-duplex communication?

What is the purpose of error detection and correction in data communications?

To ensure the accuracy and integrity of transmitted data

To compress data for efficient transmission

To encrypt data for secure transmission

To convert analog signals to digital signals

What is the purpose of flow control in data communications?

To regulate the flow of data between sender and receiver to prevent data loss or congestion

To convert analog signals to digital signals

To compress data for efficient transmission

To encrypt data for secure transmission

What is the purpose of error detection and correction in data communications?

To ensure the accuracy and integrity of transmitted data

To compress data for efficient transmission

To encrypt data for secure transmission

To convert analog signals to digital signals

What is the purpose of flow control in data communications?

To regulate the flow of data between sender and receiver to prevent data loss or congestion

To convert analog signals to digital signals

To compress data for efficient transmission

To encrypt data for secure transmission

What is the purpose of error detection and correction in data communications?

To ensure the accuracy and integrity of transmitted data

To compress data for efficient transmission

To encrypt data for secure transmission

To convert analog signals to digital signals

What is the purpose of flow control in data communications?

To regulate the flow of data between sender and receiver to prevent data loss or congestion

To convert analog signals to digital signals

To compress data for efficient transmission

To encrypt data for secure transmission

What is the purpose of a network interface card (NIC) in data communications?

To connect a computer to a network

To store data

To process data

To display data

What is the maximum data transmission speed of a Category 6 Ethernet cable?

10 Gbps

1 Gbps

100 Mbps

10 Mbps

What is the purpose of a firewall in data communications?

To protect a network from unauthorized access

To connect devices to a network

To transmit data between networks

To store data

What is the purpose of a DNS server in data communications?

To translate domain names into IP addresses

To encrypt data during transmission

To store and manage data

To connect devices to a network

Which of the following is an example of a public IP address?

203.0.113.1

192.168.0.1

10.0.0.1

172.16.0.1

What is the purpose of a VPN in data communications?

To create a secure connection over a public network

To connect devices to a network

To store and manage data

To translate domain names into IP addresses

What is the purpose of a proxy server in data communications?

To act as an intermediary between clients and servers

To connect devices to a network

To store and manage data

To translate domain names into IP addresses

What is the purpose of a MAC address in data communications?

To uniquely identify a network interface card (NIC)

To connect devices to a network

To store and manage data

To translate domain names into IP addresses

What is the purpose of a repeater in data communications?

To regenerate and amplify signals

To connect devices to a network

To store and manage data

To translate domain names into IP addresses

What is the purpose of a switch in data communications?

To connect multiple devices in a local area network (LAN)

To connect devices to a network

To store and manage data

To translate domain names into IP addresses

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