Which of the following is/are external commands?
Edit
Label
Sys
All of above
Correct Answer :
D. All of above
Related Questions
Which of the following is suitable after you install new drivers?
Hibernate
Sleep
Restart
Shut Down
Which of the following is not essential to shut down your computer?
XCOPY
Edit
Sys
None of the above
_________, as a feature of good distributed file system, clients should be able to continue working if a file server crashes. Likewise, data must not be lost and a restarted file server must be able to recover to a valid state.
Scalability
Reliability
Flexibility
Fault tolerance
Which one of the following statements is true?
The cat command cares which file it receives as input or where the input goes.
Relative pathnames begin with something other than the slash character
UNIX shells never remember their current working directory (CW.
The cat command interprets -X as an option character rather than a pathname.
The algorithm should be scalable i.e. _____________.
The system should not enter a state in which nodes spend all their time migrating processes or exchanging control messages without doing any useful work.
The system should be able to handle small and large networked systems.
The algorithm should not be affected by the crash of one or more nodes in the system.
The process assignment decisions should be based on the current load of the system and not on some fixed static policy.
______________is responsible for allocating primary memory to processes and for assisting the programmer in loading and storing the contents of the primary memory.
Operating system
Memory manager
Database administrator
RAM
_______________occurs when two or more execution flows are able to run simultaneously.
Deadlock
Concurrency
race condition
interrupt
Creation of a semaphore set is done using the _______system call.
semget()
semsget()
mknod()
sempget()
A process is _________________
program in main memory
Program in cache memory
program in secondary storage
program in execution
DSM stands for______________
Direct shared memory
Direct system memory
Distributed shared memory
Distributed system memory
The ______________ unpacks the call receipt messages from local RPC Runtime and makes a perfect local call to invoke the appropriate procedure in the server.
server Stub
server
client
client stub
A shared memory segment first needs to be allocated (create, using the__________ system call.
semget()
msgrcv()
shmget()
mknod()
____________ file system allows sharing in multiple different locations grouped under one folder.
Direct
distributed
sequential
parallel
_______________refers to a strategy where whenever a resource is requested, it is only granted if it cannot result in deadlock.
Deadlock Prevention
Livelock
Deadlock avoidance
none of these
_______refers to the block size of the DSM system, i.e. to the units of sharing and the unit of data transfer across the network when a network block fault occurs.
Granularity
Coherence
Abstraction
Synchronization
The date and time displays on
Taskbar
Launch pad
Status bar
System tray
_____________ manage the name spaces and binds an object to its location.
Name Server
Name agent
Context
Name resolution
Which components appear in the initial Windows start up display?
Start menu
Dialog boxes
Taskbar
All of above
Which of the following operating system reads and reacts in actual time?
Quick Response System
Time Sharing System
Batch Processing System
Real Time System
In _______, if a processor writes the value 100 to the memory location x, this write operation will only change the contents of its local memory and will not affect the contents of the memory of any other processor.
Tightly coupled systems,
Loosely coupled systems
Parallel processing systems
File management system
___________variable is not automatically created on all UNIX systems but is used by so many programs that it is considered a standard environment variable.
IFS
TERM
PATH
What do you mean by 0-reliable level in multicast communication?
Multiple responses is expected from any receivers.
No response is expected from any receivers.
Multiple responses is expected from multiple receivers.
A multicast message is received by all the members of the group or none.
Ext2 is the standard file system of _______ and uses a block size of_____bytes
MS DOS,8K
Linux ,1024
Linux, 512
Unix, 512
What is dispatch latency?
The time taken by the dispatcher to stop one process and start another
The whole time taken by all processor
The time taken by the processor to write a file into disk
None of Above
In the case of____________ , changes to an open file are only locally visible.
session semantics
immutable files
atomic transactions
None of the above.
The problem with logical dumping is ________________
very costly
very slow
human errors
all of these
The ___ contains commands associated with the My Computer window
Start menu
Standard menu
System menu
None of the above
A sequence of instructions telling the computer what to do is called a_____________
program
language
translator
package
Two clocks are said to be synchronized at a particular instance of time if the difference in time values of the two clocks is less than some specified constant. The difference in time values of two clocks is called ___________.
Interrupt
Clock Frequency
Clock Ticks
Clock Skew
____ runs on a computer hardware and serves as a platform for other system to run on
System software
Operating system
Application system
All of above