What Is Starvation And Aging?

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⟩ What is starvation and aging?

Starvation:

Starvation is a resource management problem where a process does not get the resources it needs for a long time because the resources are being allocated to other processes.

Aging:

Aging is a technique to avoid starvation in a scheduling system. It works by adding an aging factor to the priority of each request. The aging factor must increase the request?s priority as time passes and must ensure that a request will eventually be the highest priority request (after it has waited long enough)

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More Questions for you:

Concatenation is performed by
a) writing expressions next to one another, with no operator
b) conditional operator
c) relational operator
d) matching operator

Which command on the command line provides the same output as this executable awk script?

 #! /usr/bin/awk -f
 BEGIN {
  print "google"
 }
a) awk 'BEGIN {print "google"}'
b) awk 'print "google"'
c) awk 'print {google}'
d) none of the mentioned

Which one of the following is not true?
a) there are 3 types of constant expressions numeric, string and regular
b) arithmetic operators are used to evaluate expressions
c) assignment expression is an expression that stores a value into a variable
d) comparison expressions does not compare strings for relationship

What is the output of the command awk 'BEGIN {printf "%cn",65}'
a) A
b) 65
c) syntax error
d) none of the mentioned

The command "awk {print $1} san.txt" will
a) print the first line of file san.txt
b) print the first field of every line in san.txt
c) generate syntax error
d) none of the mentioned

Which one of the following statement is not true about the format-control letters for printf statement in awk program?
a) "c" prints a number as an ASCII character
b) "d" prints a decimal integer
c) "h" prints an unsigned hexadecimal integer
d) "o" prints an unsigned octal integer

Which one of the following is not true?
a) in typical awk program, all input is read either from standard input or specified files
b) awk language divides its input into records and fields
c) awk reads an input record and the record is automatically seperated by the interpreter into pieces called "fields"
d) the number of fields need to be a constant

In awk program, the statement "print" with no items
a) is equivalent to "print $0″
b) prints the entire current record
c) both (a) and (b)
d) none of the mentioned

The print and printf statements can be told to send their output to other place except standard output, is called
a) redirection
b) redistribution
c) reinsertion
d) none of the mentioned

An awk program can be run by
a) including the program in the command that runs awk
b) putting it into a file and run with a command
c) running an executable awk script
d) all of the mentioned

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