64 practice sets · Page 4 of 4
A part of Windows 2000 operating system that is not portable is
Device Management
Virtual Memory Management
Processor Management
User Interface
Correct Answer: B — Virtual Memory Management
Explanation:
Virtual Memory Management is heavily dependent on specific hardware architectures and memory management units, making it less portable across different platforms.
Match the following with reference to Unix shell scripts:
| List-I | List-II |
|---|---|
| (a) $? | (i) Process ID of current shell |
| (b) $# | (ii) All arguments as a single string |
| (c) $$ | (iii) Number of command line arguments |
| (d) $* | (iv) Exit status of last command |
(a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
(a)-(i), (b)-(iii), (c)-(i), (d)-(iv)
Correct Answer: B — (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
Explanation:
Specific shell variables map to strict definitions: $? gives the last exit status, $# gives the argument count, $$ is the current process ID, and $* returns all arguments.
The output generated by the LINUX command:
$ seq 1 2 10
will be
1 3 5 7 9
1 2 10
1 5 10
1 2 3 4 5 6 7 8 9 10
Correct Answer: A — 1 3 5 7 9
Explanation:
The seq 1 2 10 command generates a sequence starting at 1, incrementing by 2, and ending before it exceeds 10, outputting 1, 3, 5, 7, 9.
In UNIX, ______________ creates three subdirectories: 'PIS' and two subdirectories 'progs' and data from just created subdirectory 'PIS'.
mkdir PIS/progs data
mkdir PIS progs data
mkdir PIS PIS/progs PIS/data
mkdir PIS/progs PIS/data PIS
Correct Answer: C — mkdir PIS PIS/progs PIS/data
Explanation:
The command mkdir PIS PIS/progs PIS/data explicitly creates the parent directory 'PIS' along with its subdirectories 'progs' and 'data' in one go.
