Grade 7 50 questions

What is the definition of data transmission?

• The process of storing data on a computer's hard drive.

• The process of deleting old files from a device.

• The process of sending digital data from a sender to a receiver.

• The process of creating new data using an application.

• The process of turning a computer on and off.

Which of the following is the best example of simplex data flow?

• A. A telephone call where both people can talk at once.

• B. Using a walkie-talkie to talk to a friend.

• C. A radio broadcast sending music to your car.

• D. A video conference with your classmates.

• E. Sending a text message and getting a reply.

What is the main characteristic of simplex transmission?

• Data can only travel in one direction.

• Data travels in two directions at the same time.

• Data travels in two directions, but not at the same time.

• Data moves very slowly.

• Data is always sent wirelessly.

How is communication described in a half-duplex system?

• It is a one-way street, where data only goes in one direction.

• It is a two-way street, but only one direction at a time.

• It is a two-way highway where data flows both ways simultaneously.

• It is a system where no data can be sent.

Walkie-talkies are a real-world example of which type of data flow?

• Simplex

• Parallel

• Full-duplex

• Synchronous

• Half-duplex

In full-duplex transmission, how does data flow between devices?

• Only one device can send data at a time.

• Both devices can send and receive data at the same time.

• Only one device can receive data.

• Devices must take turns sending and receiving.

• Data only flows from the computer to the keyboard.

A telephone call, where both people can speak and listen simultaneously, is an example of:

• Simplex

• Half-duplex

• Full-duplex

• Serial

• Asynchronous

How does serial transmission send bits?

• Many bits are sent at the same time on different wires.

• Bits are sent one after another in a single stream.

• Bits are sent in groups of eight only.

USB and Ethernet connections are common examples of which transmission mode?

• Parallel

• Half-duplex

• Simplex

• Serial

• Asynchronous

How does parallel transmission send data?

• One bit is sent at a time over a single channel.

• Multiple bits are sent at the same time over several channels.

• It uses radio waves to transmit bits.

• It can only send data, not receive it.

• It frames every bit with a start and stop signal.