OSG202 PT3 Questions And Answers With Verified Solutions
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Course
OSG202
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OSG202
OSG202 PT3 Questions And Answers With Verified Solutions
Which of a system call is to allow the system announce that the file is coming and set some of the attributes? ANS CREATE
Which of the following is not correct about hard links and symbolic links? ANS Hard links can point to files on ot...
OSG202 PT3 Questions And Answers With Verified
Solutions
Which of a system call is to allow the system announce that the file is coming and set some of the
attributes? ANS CREATE
Which of the following is not correct about hard links and symbolic links? ANS Hard links can
point to files on other machines
Which of a system call is to allow the file to appear in more than one directory? ANS LINK
Which of a system call is to allow the system free up internal table space? ANS Close
What is incorrect about contiguous allocation of files? ANS It does not cause disk fragmentation
Which of the following is not special file? ANS Stream special file
Disk can be divided up into one or more partitions. The first block of every partition is called:
ANS Boot block
Which of the following statements about interrupts and trap instructions is incorrect? ANS None
of the other choices
What is a "stripping" in RAID? ANS Distributing data over multiple drives
How much cylinder skew is needed for a 5400- RPM (rotate per minute) disk with the track-to-track
seek time of 1 msec? The disk has 200 sectors of 512 bytes on each track. ANS 18 sectors
How much cylinder skew is needed for a 7200- RPM (rotate per minute) disk with the track-to-track
seek time of 1 msec? The disk has 200 sectors of 512 bytes on each track. ANS 24 sectors
, How much cylinder skew is needed for a 3600- RPM (rotate per minute) disk with the track-to-track
seek time of 1 msec? The disk has 200 sectors of 512 bytes on each track. ANS 12 sectors
In a fixed magnetic disk, each circle is called a ANS track
Which of the following I/O software do Device drivers do? ANS Converting binary integers to
ASCII for printing
Device Driver is usually written by: ANS Device's Manufacturer
The aspect of disk performance that represents the time it takes to position the head a the desired
track is known as ANS Rotational delay
A operation concerning Stable Storage is: ANS All of the other choices
When making CDs for sale, such as music or software CDs, data is recorded on a master disc by
means of a high-intensity laser beam, which burns indentations, called pits, and flat areas, called
ANS Lands
Rearrange the layers in I/O software starting at the bottom ANS 43251
When an external device becomes ready to be serviced by the processor, the device sends this signal
to the processor. This signal is called: ANS Interrupt signal
Imagine that a certain modem can read 7,000 characters per second and that the time to read a
character to the modem register is so short it can be ignored. If to run this modem using interrupt-
driven I/O and each character read requires an interrupt that takes 10 usee all-in to service. How
many percent of the CPU does the interrupt overhead cost? ANS 4% of the CPU
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