Grade 7- Preparation for FINAL Exam

If data can only travel in one direction, like on a one-way street, what is this flow called?

• Full-Duplex

• Half-Duplex

• Simplex

• Complex

A telephone call, where both people can talk and listen at the same time, is an example of which data flow?

• Simplex

• Half-Duplex

• Full-Duplex

• Audio-Duplex

Which term describes sending data bits one after another in a single stream?

• Parallel Transmission

• Serial Transmission

• Half-Duplex

• Full-Duplex

What is it called when multiple bits of data are sent at the same time over several channels?

• Serial Transmission

• Simplex Transmission

• Asynchronous Transmission

• Parallel Transmission

In asynchronous transmission, what tells the receiver when a character begins and ends?

• A shared clock signal

• A fast internet connection

• Start and stop bits

• The user's name

When data is sent over a network, it is broken down into small units called...?

• Pieces

• Chunks

• Packets

• Notes

Data corruption refers to:

• The unintended alteration of data, making it incorrect or unusable.

• The process of backing up data to prevent loss.

• The encryption of data for security purposes.

• The organization of data into tables and charts.

What is "crosstalk" in data transmission?

• When two people are talking at the same time

• When electrical energy from one cable interferes with a nearby cable

• A way to make signals stronger

• A type of secure cable

What is "attenuation"?

• When a data signal gets stronger

• When a data signal is blocked completely

• When a data signal weakens as it passes through objects like walls

• When data is sent too fast

Gaining unauthorized access to data or a computer system is known as...?

• Hacking

• Borrowing

• Sharing

• Attenuation