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Recent questions tagged os-protection
43
votes
7
answers
1
GATE IT 2005 | Question: 19, UGCNET-June2012-III: 57
A user level process in Unix traps the signal sent on a Ctrl-C input, and has a signal handling routine that saves appropriate files before terminating the process. When a Ctrl-C input is given to this process, what is the mode in which the signal handling routine executes? User mode Kernel mode Superuser mode Privileged mode
A user level process in Unix traps the signal sent on a Ctrl-C input, and has a signal handling routine that saves appropriate files before terminating the process. When ...
Ishrat Jahan
11.0k
views
Ishrat Jahan
asked
Nov 3, 2014
Operating System
gateit-2005
operating-system
os-protection
normal
ugcnetcse-june2012-paper3
+
–
25
votes
2
answers
2
GATE CSE 1999 | Question: 1.11, UGCNET-Dec2015-II: 44
System calls are usually invoked by using a software interrupt polling an indirect jump a privileged instruction
System calls are usually invoked by usinga software interruptpollingan indirect jumpa privileged instruction
Kathleen
11.9k
views
Kathleen
asked
Sep 23, 2014
Operating System
gate1999
operating-system
normal
ugcnetcse-dec2015-paper2
os-protection
+
–
67
votes
5
answers
3
GATE CSE 2001 | Question: 1.13
A CPU has two modes -- privileged and non-privileged. In order to change the mode from privileged to non-privileged a hardware interrupt is needed a software interrupt is needed a privileged instruction (which does not generate an interrupt) is needed a non-privileged instruction (which does not generate an interrupt) is needed
A CPU has two modes privileged and non-privileged. In order to change the mode from privileged to non-privilegeda hardware interrupt is neededa software interrupt is ne...
Kathleen
21.7k
views
Kathleen
asked
Sep 14, 2014
Operating System
gatecse-2001
operating-system
normal
os-protection
+
–
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