Computer Operating System Questions and Answers

Answer: C

Correct answer: /status

FDISK /STATUS displays the partition table of the hard disk and exits, without entering the interactive menu where partitions can be created or deleted - a safe way to look at the layout.

Answer: B

Correct answer: A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine

FORTRAN is a standardised high-level language, so the same source compiles and runs on both machines with little or no change - which is precisely the point of a high-level language. That statement is therefore the untrue one; the others are correct.

Answer: C

Correct answer: Windows XP

Windows XP was the first of these released in a 64-bit edition - XP 64-bit Edition for Itanium, then XP Professional x64 for AMD64 and Intel 64 processors. Windows 95, 98 and 2000 Professional shipped only as 32-bit systems.

Answer: D

Correct answer: CP/M

When the IBM PC appeared in 1981 the dominant operating system for microcomputers was Digital Research’s CP/M, which ran on the 8-bit 8080 and Z80 machines that made up most of the market. PC-DOS shipped with the new machine and displaced it over the following years.

Answer: A

Correct answer: Partitions the hard drive for use

FDISK creates, deletes and displays the partitions of a hard disk and marks one active for booting. It divides the drive; each partition must then be formatted separately before it can hold files.

Answer: C

Correct answer: consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

The uniform symbol table is the token stream: as the lexical phase recognises each element of the source it appends a uniform-length entry describing it, and the syntax phase then parses that list rather than the raw characters. It is built afresh for every program.

Answer: D

Correct answer: All of the above

The operating system manages every resource of the machine: memory, deciding where each program sits and protecting one from another; the processor, scheduling which process runs; and the disks and other devices, driving them and arbitrating between the programs that want them.

Answer: D

Correct answer: F8

Pressing F8 as DOS starts steps through CONFIG.SYS and AUTOEXEC.BAT one line at a time, asking whether to execute each - which is how a troublesome driver is identified. F5 skips both files entirely.

Answer: C

Correct answer: DELTREE

DELTREE removes a directory together with everything inside it - files, subdirectories and their contents - in a single command. RD refuses unless the directory is already empty, so without DELTREE the tree must be emptied from the bottom up.

Answer: B

Correct answer: is less secure than end-to-end encryption

Link encryption protects each hop separately, so the message is decrypted and re-encrypted at every intermediate node - and lies in clear inside each of them. End-to-end encryption keeps it encrypted the whole way, so the intermediate nodes never see the plaintext at all.