8-7
For improvement in system reliability, there are a measure to prevent failures and a measure to continue operating the system even if a failure occurs. Which of the following is a
measure to continue operating the system even if a failure occurs?
a)
b)
c)
d)
8-8
Which of the following is the appropriate description concerning an OS that runs on PCs?
a)
b)
c)
d)
8-9
Replacing with the devices that do not fail easily
Configure redundant devices that constitute the system
Preparing an operation manual to prevent operators from performing incorrect operations
Performing operations incorporating the scheduled maintenance for the devices
Software that manages hardware and applications on a PC
Software for viewing Web pages
Software for transmitting and receiving e-mail
Software for creating and editing documents
In the hierarchical structure shown in the figure, two or more directories with the same
names A and B are located. Which of the following specifies file “f ” in the directory indicated by an arrow from the directory with the “*” (current directory)? Here, the file specification method is as follows:
[Specification method]
(1) Like “Directory name\... \directory name\file name”, place the directories on the path
by using “\” as a delimiter in correct order and then place “\” and the file name.
(2) Indicate the current directory with “.” (one dot).
(3) Indicate the parent directory (one level up within hierarchy) with “..” (two dots).
(4) When it begins with “\”, the root directory is omitted at the left end.
Root
A
B＊
A
A
a)
b)
c)
d)
231
B ←
.\B\f
..\..\B\f
..\A\..\B\f
..\B\f
A
B
B