2.3 Methods of data transmission

2.3 Methods of data transmission

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Match

Match the following words with its definition.

• A method of transmitting data packets across a network. Each data packet is able to take an individual pathway across the network.

• Computers and devices that are joined together using cables or wireless technology.

• A network component that examines a data packet to obtain its destination address and then forward the packet to this address.

• The unique address that is given to a device when it is connected to a network.

• A small unit of data

packet switching

network

router

internet protocol (IP) address

packet

• packet switching

• network

• router

• internet protocol (IP) address

• packet

Multiple Choice

True or False: There is only one method of transmitting data.

• True

• False

• What's data?

Methods of data transmission

We are going to learn 5 methods:

• ​Serial

• Parallel

• Simplex

• Half-Duplex

• Full-Duplex

Methods of data transmission

Serial and parallel data transmission involve the number of wires that are used to transmit the data

​Simplex, half-duplex and full-duplex transmission involve the direction in which the data is transmitted.

Multiple Choice

What are the three types of data transmission methods that describe the direction of data flow between devices?

• Unidirectional
• Bidirectional
• Multicast
• Simplex, Half-duplex, Full-duplex

Fill in the Blank

What are the two types of data transmission methods that describe the number of wires used to transmit data?

Serial data transmission

Categorize

Options (5)

The data arrives ordered.

The transmission is slow.

Less chance of interference.

It is cheaper.

It requires additional data to confirm the beginning and end of the data transmission.

Organize the advantages and disadvantages of the serial data transmission.

Advantages

Disadvantages

Parallel data transmission

Categorize

Options (5)

The transmission is quicker than the serial transmission.

The bits do not arrive in order to the destination.

There is no requirement to convert the data into serial data transmission.

More chance to data interference, so more chance of error.

More expensive than the serial data transmissions.

Organize the advantages and disadvantages of the parallel data transmission.

Advantages

Disadvantages

Multiple Choice

We need to print a lot of leaflets quickly. Which method should we use to connect the computer to the printer?

• Serial

• Parallel

• What is a leaflet?

Multiple Choice

We need to send very important data over a long distance to a remote server. Which method should we use to connect the computer to the server?

• Serial

• Parallel

• What is a leaflet?

Simplex data transmission

Open Ended

You would only use simplex type of data transmission when there is no need to send data both ways between the devices.

Can you think of devices that would use simples transmission.

Name devices that don't need to receive data only send.

Half-duplex data transmission

Fill in the Blank

Fill the gap.

Half-duplex data transmission is used to create a ____connection.

-

Full-duplex data transmission

Multiple Choice

What type of data transmission will we use for a videoconference?

• Half-duplex

• Full-duplex

• Simplex

Multiple Choice

What type of communication allows data to flow in only one direction?

• Half-duplex

• Full-duplex

• Simplex

Multiple Choice

Which communication method enables data transmission in both directions, but not at the same time?

• Half-duplex

• Full-duplex

• Simplex

Multiple Choice

What type of transmission allows simultaneous sending and receiving of data?

• Half-duplex

• Full-duplex

• Simplex

Multiple Choice

In which communication mode can a device only send messages, like a broadcast radio station?

• Half-duplex

• Full-duplex

• Simplex

Multiple Choice

Which method is used in walkie-talkies, where one person speaks while the other listens?

• Half-duplex

• Full-duplex

• Simplex

Multiple Choice

What type of connection is used in telephone calls, allowing both parties to talk and listen simultaneously?

• Half-duplex

• Full-duplex

• Simplex

Multiple Choice

In a two-way radio system where one party must wait for the other to finish speaking, what is the mode of transmission?

• Half-duplex

• Full-duplex

• Simplex