SHS1 Mid Test Review

One of error detection method which uses a system acknowledgements and timeouts is...

• Automatic Repeat Request

• Echo Check

• Check Digits

• Parity

A horizontal and vertical paritycheck on a block data being transmitted is

• parity check

• parity block

• parity bytes

• parity bits

some students sat a computer science exam. A number of their response about the type of transmission is incorrect. their incorect answer is...

• a data sent one bit at a time down a single wire in one direction only is using serial simplex transmission

• a data sent 16 bit at a time down a single wire in both directions, but not at the same time is using parallel half duplex transmission

• a data sent in 8 bit a t a time down 8 wires in both directions simultaneously is using single half duplex transmission

• a data sent one bit at a time down a single wire in both directions simultaneously is using serial full duplex

Half duplex transmission is where...

• A data can only be transmitted in one direction

• a made up term to confuse us

• data can be sent both ways at the same time

• data can be sent both ways but not at the same time

The data which sent to another device, and data is sent back again to the sender is called...

• checksum

• echo check

• check digits

• parity check

the data after encryption is known as...

• simpletext

• plaintext

• chiphertext

• firsttext

Data sent over a long distance is usually broken up into data packets. the packets of data are quite small, typically...

• 54kib

• 84Kib

• 64KiB

• 74KiB

the payload is consisting of...

• the actual data which being sent

• IP address of sending device

• IP address of the receiving device

• some form of errir checking to ensure the packet arrives error-free

in encryption, there is a term used to describe the message before it is encypted. the term name is...

• simpletext

• plaintext

• chiphertext

• firsttext

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