Computer crossword puzzle

123456
Across
  1. 5. Unauthorised access to system bus topology
  2. 6. it is the way of performing bank transaction using the internet
Down
  1. 1. This uses one main cable to which all the nodes are directly connected
  2. 2. a network device that is used to connect all the computers in a network with each other
  3. 3. it can be defined as a group of computers and other peripheral devices that are linked together for the purpose of sharing data and hardware resources
  4. 4. A computer network that is mainly created for an individual person