Error Detection

USB stands for:

• Universal Serial Bus
• Unified Serial Bus
• Unique Serial Bus
• Unqualified Students Busk

If you have a 2Gbit/s connection to your ISP how long will it take to download a 1GByte file?

• 0.5 seconds
• 2 seconds
• 4 seconds
• 8 seconds

What should the value of ? be if the byte ?0110110 is transmitted using even parity

• 0

• 1

What should the value of ? be if the byte ?1000110 is transmitted using even parity

• 0

• 1

What should the value of ? be if the byte ?0000000 is transmitted using odd parity

• 0

• 1

What do you call sending a number that is calculated from the data transmitted which is used to check for errors?

• Hoping

• Checking

• Checksum

• Checkcalc

If an error is detected what should the receiver do?

• Correct the error themselves

• Ask for the data to be retransmitted

• Ignore it

• Restart their computer

What types of errors can parity be used to check?

• Transmission errors

• Syntax errors

• Logic errors

• Programming erros

Which of the following check and can also correct transmission errors?

• ARQ

• Parity

• Check sum

• None of the above

• Check digits

What is the most common error checking method for long strings like the ISBN numbers of books?

• Check sum

• Check digits

• Parity

• ARQ