FTP uses two parallel TCP connections to transfer a file.

Coaxial cable consists of two concentric copper conductors.

If there are n signal sources of the same data rate, then the TDM link has _____ slots.

Sniffers can be prevented by using a _____________

The most flexibility in how devices are connected together is provided by bus topology.

Which of the following are application layer protocols?

Which protocol defines a profile of RTP that provides cryptographic services for the transfer of payload data?

Which of the following is a transport layer protocol?

What is the main difference between IPv4 and IPv6?

Which of the following are functions of ATM header subfields?