I'm working on them at the moment but just for some feedback, could someone please briefly reply with what they would answer?
1) When using the PSTN for data transfer, the speed or rate of transfer is limited mainly by what?
2) The part of a data circuit over the PSTN that is most responsible for the speed limitations at which data can be transmitted is what?
3) The frequency of an analogue signal is measured in units of what?
4) Digital signals may be sent via the ISDN if they are what?
5) A channel that has an upper frequency limit of 5.2Khz and a bandwidth or 4.5Khz, has a lower frequency limit of what?
6) The non-printing ASCII characters from 0 to 31 decimal are known as what sort of codes?
These are all true or false and I have the options here so let me know if you need me to type some of them out.