At the Data Link layer, protocol data units are called ____________________.

Absolute units are units that are fixed in size regardless of the output device and are usually used only with printed media.?

Answer the following statement true (T) or false (F)

Which of the following is not an application of cross-reference genera tion?

a. indexing a textbook b. listing all occurrences of each misspelled word in a document c. listing all uses of each object in a program d. transmitting large files over a phone line e. all of the above are applications of a cross-reference generator