CD method_______ determines whether the CD-ROM drive is empty.

In this chapter we have described sequence numbers between a sender and receiver as a way to protect a communication stream against substitution and replay attacks. Describe a situation in which an attacker can substitute or replay in spite of sequence numbers. For which type of sequence numbering—one general stream of sequence numbers or a separate stream for each pair of communicators—is this attack effective?

What will be an ideal response?

The end-of-file marker is automatically written

a. when a file is opened with ios::eof b. when a file is opened with ios::app c. when a file is closed d. when the program ends e. None of these