F451: Data Transmission

Question 1

Name 3 Types of Bus used to send transmissions around a processor

Answer 1

Data Bus
Control Bus
Address Bus

Question 2

What does the Data Bus do?

Answer 2

Data Bus transmits between areas of the processor

Question 3

What does the Control Bus do?

Answer 3

Control Bus would be used to send control signals from the control unit to other parts of the processor

Question 4

What does the Address Bus do?

Answer 4

Address Bus is a series of lines connecting two or more devices that is used to specify a physical address.

Question 5

Define Serial Data Transmission

Answer 5

Is when only one bit is transmitted at a time with use of a single wire

Question 6

Define Parallel Data Transmission

Answer 6

Is when multiple bits are transmitted using multiple wires

Question 7

Define Duplex Data Transmisssion

Answer 7

Is the communication of data in both directions simultaneously

Question 8

Define Half-Duplex Transmission

Answer 8

Is the communication of data in both directions but only one at a time

Question 9

Name the 3 Types of Error Check Methods

Answer 9

Checksum
Parity Check
Echoing Back

Question 10

Describe Checksum

Answer 10

Checksum is when data is sent from one device to another, and an extra byte is transmitted which tells the total sum of the data sent. The recieving computer adds up the data and compares it to the total provided by the extra transmission, which should match it. However if it does not match it will ask for the sending computer to resend the data.

Question 11

Describe Parity Check

Answer 11

There are two types of Parity: Even and Odd. 7 bits of the byte is the message and the last bit is the parity bit/check bit. The parity should make the number of ones even or odd (depending on whether it is Odd or Even Parity). If it is not matching either criteria then the sending device will be ask for the transmission to be resent.

Question 12

Describe Echoing Back

Answer 12

A computer will send a message to another computer; and the other computer will an echo of the message sent so the sender can check to see if it is the correct message.

Question 13

What is a Handshake Signal

Answer 13

It is a signal sent to another device to establish terms of communication, so for example: To agree error detection rules; To ensure synchronistation of signal; To ensure that the same protocol is being used.

Question 14

Name a Type of Data Transmission that uses a high bit rate:

Answer 14

Streaming of a video is a good example because it uses a lot of data. It is also extremely time sensitive due to the delay which will interrupt the video.