How do you troubleshoot and fix slowness in DB2 ?
Linux Systems Administrator Interview Questions
536 linux systems administrator interview questions shared by candidates
Diagnose failing PHP script
Use a bash for loop to create 50 blank sequential files
What is a web server 404 error?
How do you fix the following 500 ISE?
How to remove a file in Linux that has a non-alphanumeric character in the name.
Would you give root access to developers on production servers?
Can you catch a SIGKILL message? How about a SIGTERM?
What is IPC? What are the various schemes available? The term IPC (Inter-Process Communication) describes various ways by which different process running on some operating system communicate between each other. Various schemes available are as follows: Pipes: One-way communication scheme through which different process can communicate. The problem is that the two processes should have a common ancestor (parent-child relationship). However this problem was fixed with the introduction of named-pipes (FIFO). Message Queues : Message queues can be used between related and unrelated processes running on a machine. Shared Memory: This is the fastest of all IPC schemes. The memory to be shared is mapped into the address space of the processes (that are sharing). The speed achieved is attributed to the fact that there is no kernel involvement. But this scheme needs synchronization. Various forms of synchronisation are mutexes, condition-variables, read-write locks, record-locks, and semaphores.
Final question, you are driving a truck an inch taller than the overpass and get stuck, how would you get out.
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