Across
- 3. a message sent to the receiver indicating that data has been received correctly (used in the ARQ error detection method) (1 word)
- 6. a device that enables data packets to be moved between different networks, for example to join a LAN to WAN (1 word)
- 7. data that can be sent on one direction only (1 word)
- 9. a method of transmission in which a message is broken into many data packets which can then be sent along pathways independently of each other (2 words)
Down
- 1. a verification method used to check if data transferred has been altered or corrupted; calculated from the block of data of data being sent; the checksum value is sent after each data block (1 word)
- 2. the part of a data packet that indicates the end of the data packet and cyclic redundancy check error check (2 words)
- 4. a horizontal and vertical parity check on a block of data being transmitted (2 words)
- 5. stages in a network that can receive and transmit data packets; routers and nodes in communication networks (1 word)
- 8. the original text/message before it is put through an encryption algorithm (1 word)
- 9. a type of encryption key that is known to all users (2 words)