Characters written to a stream are transmitted to the file in blocks when a newline or end of file character is encountered. I.e., a full line-at-a-time. This is known as __________.

Every character you type on a *nix system always goes directly, with no intervention, to the process reading your input.

Magnet and optical disk drives have two basic kinds of delay in common. Optical disks, have two additional sources of delay. Name these two additional sources of delay experienced by optical drives only: and .

In systems using virtual memory, some memory frames are made permanently resident i.e., pages loaded into those frames can never be paged out to make space for resolving a page fault. Of what use would such ‘resident frames’ be to the OS?

Assembly language refers to:

An operating systems generally does not talk directly to disk drives.

The basic data unit in the Transmission Control Protocol is called a(n) __________.

How many layers does OSI Reference Model has?

Machine code, op code, and assembly language all refer to the same thing. The terms are synonyms.

Match the following with the most accurate description. No responses should be used more than once.