| Back to Questions Page |
| |
| Question |
in a multiprogramming and time-sharing environment,several
user share the system simultaneously.
this situation can result in various security problems
a.discuss two such problems
b.how can we ensure the same degree of security in a
time-share machine as in a dedicated machine? |
Rank |
Answer Posted By |
|
Question Submitted By :: Guest |
|
I also faced this Question!! |
© ALL Interview .com |
| Answer | a)one user may modify the data which is required by another
user
one user may use the resources but charge expenses to
some anothe user  |
| Jyothi
|
| |
| |
| Question |
what are the function of the following?
1.i/o traffic controller
2.i/o device handler
3.i/o scheduler |
Rank |
Answer Posted By |
|
Question Submitted By :: Guest |
|
I also faced this Question!! |
© ALL Interview .com |
| Answer | Followings are functions of the above described operating
system modules,
1. i/o Traffic Controller: Keeps track of status of all
devices, control units and channels.
2.i/o Device Handler: Perfroms the actual dynamic
allocation , once the i/o scheduler has made the decission,
by constructing the program, issuing the start i/o
instruction and processing the device interrupts. these is
usually seperate device handler for each type of device.
3. i/o scheduler: As the name indicates it just implements
the scheduling algorithm used to allocate channel, control
unit and device access, to complete i/o request of a job |
| Shyam Kapse
|
| |
| |
| Question |
describe a mechanism for enforcing memory protection in
order to prevent a program from modifying the memory
associated with other program |
Rank |
Answer Posted By |
|
Question Submitted By :: Guest |
|
I also faced this Question!! |
© ALL Interview .com |
| Answer | Every program can be given a base and limit register.If it
goes beyond the memory it is allowed to access.OS will
prevent it
|
| Anjana
|
| |
| |
|
|
| |
| Question |
I have first installed windows in my system.then i intalled
linux, i am able to get the OS selection menu. later i got
a problem with os , again i reinstalled windows os, now i
am not able to see to os selection screen,how to get it
again. |
Rank |
Answer Posted By |
|
Question Submitted By :: Sreeni_siri |
|
I also faced this Question!! |
© ALL Interview .com |
| Answer | after complete the windows installation boot the system with
linux cd/dvd and goto rescue mode or recovery mode and
execute these commands at shell prompt
#chroot /mnt/sysimage
#grub-install /dev/(harddisk type)
#exit |
| Ramakrishna
|
| |
| |
| Answer | After installation you have to run boot loader of linux
to get the selection screen |
| Rajesh
[Pec] |
| |
| |
| Question |
can you create con folder in windows, if not why? |
Rank |
Answer Posted By |
|
Question Submitted By :: Sreeni_siri |
|
I also faced this Question!! |
© ALL Interview .com |
| Answer | NO.
Microsoft know that certain words have been reserved from
the DOS days.....And you can't create a folder using these
names below:
CON
LPT1
A: to Z:
AUX
PRN
COM1
NUL
are some of the ones I know of... |
| Rob.c.
|
| |
| |
| Answer | No,We cannot create the folder name CON.
It’s pretty simple, Con is a reserved name from the early
days from DOS, it stands for the “CONSOLE” I/O device, Since
it is already used by the system. If we create one with some
evil tricks then the system will get confused. There will be
an ambiguity. |
| Rajkumar Baswa
[Pec] |
| |
| |
| Answer | yes it is possible...........
I can create con foldear in windows......
Do apply this Tips.....
Right Click on the folder
New
Folder
Alt+255
Fill con
Enter
Your Folder will be create on the windows. |
| Abhishek Ranjan
[Pec] |
| |
| |
|
| |
|
Back to Questions Page |
Did you received any Funny E-Mails from your Friends and like to share with rest of our friends? Yeah!! you can post that stuff 
Site Map