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RTOS (43) - Bulnex (4)
- Operating Systems General Concepts (1242)
- Data Structures (2039)
- IBM AIX (132)
- MS-DOS (66)
- Operating Systems AllOther (199)
Assume that passwords are selected from four-character combinations of 26 alphabetic characters. Assume that an adversary is able to attempt passwords at a rate of one per second. a) Assuming no feedback to the adversary until each attempt has been completed, what is the expected time to discover the correct password?
FCI,
4 19439Assuming feedback to the adversary flugging an error as each incorrect character is entered, what is the expected time to discover the correct password?
3312Assuming one link of the Trojan horse copy-and-observe-later chain is broken. There are two other possible angles of attack by Alice: Alice logging on and attempting to read the string directly, and alice assigning a security level of sensitive to the back-pocket file. Does the reference monitor prevent these attacks?
2818The flushing policy is described in the subsection on process migration strategies: a) From the perspective of the source, which other strategy does flushing resembles? b) From the perspective of the target, which other strategy does flushing resemble?
2282Directories can be implemented either as "special files" that can only be accessed in limited ways, or as ordinary data files. What are the advantages and disadvantages of each approach?
4481Some operating system have a tree structured file system but limits the depth of the tree to some small number of levels. what effect does this limit have on users? How does this simplify file system (if it does)?
1 8974In the token-passing mutual exclusion algorithm, is the timestamping used to reset clocks and correct drifts, as in the distributed queue algorithms? if not, what is the function of the timestamping?
HCL,
2690How to use disk quotas in solaris (command mode) ? what is the procedure for checking disk space of the particular user in command mode?
7 195861)application programs interact with operating system through system call.is there any method of interaction between the two? 2) Inconveniences faced by user interacting with a computer systemwithout a operating system? 3) what are the requirements for virtual memory architecture
KCPL,
2 4667What is the reason for getting the dialouge box( send this error to microsoft giving options as send to microsoft and dont send ) when we abort from the any work when it was struck.
1 5003
What is the logic to reverse the array?
What is the pwd command?
What do you understand by multi-threading and multi-tasking?
How do I stop bing at startup?
Differentiate null and void?
What happens if you turn off your computer during an update?
What is an interrupt? How are multiple interrupts dealt with?
What command can you use to make a tape archive file of a /home directory and send it to the /dev/tape device?
Explain about system and user utilities?
What is werfault?
How do I have two windows open at the same time?
What is semmni (max-sem-ids in solaris 10+)?
Which is the command line registry editing tool?
If we transfer 100 files by ftp to remote server, how to know the files are successfully transfer or some file are not transferred?
Using unix command how to display no of records in oracle?
