1 / 5 Error detection at the data link level is achieved by?
2 / 5 In which connection, two and only two devices are connected by a dedicated link?
3 / 5 Which layer of OSI determines the interface of the system with the user?
4 / 5 On a class B network, how many subnets are available with a subnet mask of 248?
5 / 5 Which part of the computer is used for calculating and comparing?