Unit 2 Data transmission and encryption -T2 Data transmission

Unit 2 Data transmission and encryption -T2 Data transmission

By Michael Harrington

Open Ended

In parallel transmission a number of wires are used - why is this?

Multiple Choice

If the same speed is used for one serial wire or eight parallel wires then which will be faster?

• serial transmission

• parallel transmission

Open Ended

What is Crosstalk?

Open Ended

When transmitting over long distances skew can occur. What is Skew?

Dropdown

Integrated circuits

Parallel transmission still occurs inside ​

Select answer

Data needs to be transferred between ​

Select answer

and RAM very quickly

On a 64-bit CPU, a full 64-bit ​

Select answer

number will be transferred in parallel in one clock tick

Because the components are very close to each other, skew and ​

Select answer

are less of an issue

Open Ended

What is a Universal serial bus (USB) serial cable commonly for?

Multiple Select

Which are USB benefits?

• All sorts of devices could be connected by simply installing the necessary drivers

• USB connections operate much faster

• Older parallel and serial cables normally required small screws to connect the cables

• The data transfer speeds are not fast enough to use in internal devices such as CPU and hard drive

• USB connections should only be 5 meters in length

Multiple Select

Which are USB drawbacks?

• All sorts of devices could be connected by simply installing the necessary drivers

• The transfer of data with DDR4 RAM is around 10 times faster than USB 3

• Older parallel and serial cables normally required small screws to connect the cables

• The data transfer speeds are not fast enough to use in internal devices such as CPU and hard drive

• USB connections should only be 5 meters in length

Multiple Choice

Which type of transmission is data is able to travel in both directions along a single connection, but it cannot travel at the same time?

• Simplex transmission

• Half-duplex

• One direction only

• Full duplex

Multiple Choice

Which type of transmission is data is able to move in both directions simultaneously using two cables?

• Simplex transmission

• Half-duplex

• One direction only

• Full duplex

Multiple Choice

Which type of transmission does data travels in one direction only?

• Simplex transmission

• Half-duplex

• One direction only

• Full duplex

Reorder

Reorder the following

• Full duplex transmission. In full duplex transmission, traffic is able to move in both

• directions simultaneously using two cables. Ethernet network cables make use of

• two twister pairs of cable – one for sending and one for receiving. Fibre optic

• cables use two fibres – one for transmitting and one for receiving.

1

2

3

4

• 1
• 2
• 3
• 4

​Now complete worksheet 2

​

all the tasks

​

​