Check Digit Parity Bits

In an even parity scheme, what would be the correct parity bit for the binary string:
1101 0001

• 1 1101 0001
• 0 1101 0001
• 1 101 0001
• 1101 0001 1

In an odd parity scheme, what would be the correct parity bit for the binary string:
1101 0001

• 1 1101 0001
• 0 1101 0001
• 0101 0001
• 1101 0001 0

In an odd parity scheme, what would be the correct parity bit for the binary string:
1111 0111

• 0 1111 0111
• 1 1111 0111
• 0 1011 0111
• 1111 0111 1

In an even parity scheme, what would be the correct parity bit for the binary string:
1000 0111

• 1 1000 0111
• 0 1000 0111
• 0 1100 0111
• 1000 0111 0

In an odd parity scheme, what would be the correct parity bit for the binary string:
1010 1010

• 1 1010 1010
• 0 1010 1010
• 1 1110 1010
• 1010 1010 1

In an even parity scheme, what would be the correct parity bit for the binary string:
0000 0000

• 0 0000 0000
• 1 0000 0000
• 0000 0000 0
• 1 1000 0000

What validation type uses the last one or two digits to check the other digits are correct?

• Length check
• Format check
• Check digit