Practice Test #3 Questions - answers at end

                             Important Instructions

     1. Read all the instructions and both sides of all pages.
     2. Manage your time when answering questions on this test.
        Answer the questions you know, first.

________________________________________________________________________________

                         Multiple Choice - 51 Questions
This is a practice test containing many practice questions.  The real test will
contain some questions similar to these.  There are probably many more questions
in this practice test than there will be time for in the real test.  The real
test will have approximately one question per minute.

The real test may have some questions unlike anything given here.  Knowing the
concepts behind the questions is necessary; memorizing these specific answers
won't help.

The answers to this test are in the Answer Key on the last page(s).

1.  What is the output on your screen of the following sequence of commands:
       x=1 ; touch x ; test ! -z $x ; echo $?
    a. no output
    b. the number 1 or 0 followed by another 1 or 0 on a new line
    c. 0
    d. 1
    e. test: $x: integer expression expected

2.  In a directory containing one file named dog, what appears on your screen
    after this command line?   2>/dev/null ls nosuchfile
    a. ls: nosuchfile: No such file or directory
    b. dog
    c. bash: 2>/dev/null: command not found
    d. nosuchfile
    e. no output on screen

3.  Which command sequence correctly searches for foo and then prints the date
    if it is found inside the file bar?
    a. if test foo = bar ; then date ; fi
    b. if [ grep foo bar ] ; then date ; fi
    c. if grep <bar foo ; then date ; fi
    d. if [ test foo bar ] ; then date ; fi
    e. if test foo bar ; then date ; fi

4.  What is the output on your screen of the following sequence of commands:
       x=0 ; y=1 ; touch $x ; test ! -n $x ; echo $?
    a. test: $x: integer expression expected
    b. no output
    c. 0
    d. 1
    e. the number 1 or 0 followed by another 1 or 0 on a new line

5.  Which command tells you the count of lines in the bash manual page?
    a. man bash > wc ; cat wc
    b. apropos bash | wc
    c. man bash | wc
    d. which bash | wc
    e. whereis bash | wc

6.  Which command line shows the current date?
    a. bash >date ; cat date
    b. date | bash
    c. echo date | bash
    d. bash <date
    e. bash date

7.  If a=aaa and b=bbb then what is the output on your screen of the following
    command sequence:   if $a = $b ; then echo $a ; fi
    a. aaa
    b. no output
    c. bash: aaa: command not found
    d. test: $a: integer expression expected
    e. test: aaa: integer expression expected

8.  What is the output on your screen of the following command sequence:
       date='Friday March 12' ; test date = date
    a. 1
    b. Fri Mar 12 10:20:39 EST 2004
    c. no output
    d. 0
    e. test: too many arguments

9.  What is the output on your screen of the following sequence of commands:
       x=pig ; y=bat ; touch $x ; [ -z $x ] ; echo $?
    a. no output
    b. test: $x: integer expression expected
    c. the number 0 or 1 followed by another 0 or 1 on a new line
    d. 0
    e. 1

10. Which command line shows the file in /bin with the largest checksum?
    a. cat /bin/* | sum | sort -nr | head -1
    b. sum /bin/* | sort -nr | head -1
    c. ls /bin/* | sum | sort -nr | head -1
    d. cat /bin | sum | sort -nr | head -1
    e. sum /bin | sort -nr | head -1

11. What is the output on your screen of the following sequence of commands:
       x=1 ; y=2 ; [ $x -ge $y ] ; echo $?
    a. the number 0 or 1 followed by another 0 or 1 on a new line
    b. 0
    c. 1
    d. no output
    e. test: $x: integer expression expected

12. What is the output on your screen of the following sequence of commands:
       x=cow ; y=dog ; touch $y ; test -n $y ; echo $?
    a. no output
    b. 1
    c. the number 0 or 1 followed by another 0 or 1 on a new line
    d. test: $y: integer expression expected
    e. 0

13. If a=ant and b=bat then what is the output on your screen of the following
    command sequence:   [ $a = ant -a $b = ant ] ; echo $?
    a. test: $a: integer expression expected
    b. 1
    c. no output
    d. the number 1 or 0 followed by another 1 or 0 on a new line
    e. 0

14. What is the output on your screen of the following command sequence:
       x=1 ; y=2 ; test $x -le $y ; echo $?
    a. 0
    b. test: $x: integer expression expected
    c. 1
    d. no output
    e. the number 0 or 1 followed by another 0 or 1 on a new line

15. If a=cow and b=dog then what is the output on your screen of the following
    sequence of commands:   [ $a = cow -a $b = cow ] ; echo $?
    a. 0
    b. test: $a: integer expression expected
    c. no output
    d. 1
    e. the number 1 or 0 followed by another 1 or 0 on a new line

16. what is the output on your screen of the following command sequence:
       false && echo "hello     there $?"
    a. hello     there 0
    b. hello     there 1
    c. hello there 0
    d. no output
    e. hello there 1

17. What is the output on your screen of the following sequence of commands:
       x=0 ; [ $x ] ; echo $?
    a. no output
    b. test: $x: unary operator expected
    c. 0
    d. 1
    e. the number 0 or 1 followed by another 0 or 1 on a new line

18. what is the output on your screen of the following command sequence:
       true && echo Linux     Rocks $?
    a. Linux Rocks 0
    b. Linux     Rocks $?
    c. no output
    d. Linux     Rocks 1
    e. Linux Rocks ?

19. Which command sequence correctly searches for the chars and then prints OK
    if it is found inside the password file?
    a. grep chars >/etc/passwd && echo OK
    b. grep chars >/etc/passwd || echo OK
    c. grep chars  /etc/passwd || echo OK
    d. grep chars </etc/passwd || echo OK
    e. grep chars </etc/passwd && echo OK

20. If a=cow and b=dog then what is the output on your screen of the following
    sequence of commands:   [ $a = cow -a $b = dog ] ; echo $?
    a. test: $a: integer expression expected
    b. no output
    c. 1
    d. 0
    e. the number 1 or 0 followed by another 1 or 0 on a new line

21. What is the output on your screen of the following sequence of commands:
       x=ok ; y=ok ; [ x = y ]
    a. test: x: integer expression expected
    b. 1
    c. bash: x: command not found
    d. 0
    e. no output

22. Which line below puts the count of the number of lines in the password file
    into the variable foo?
    a. foo=$( awk -F: /etc/passwd | wc -l )
    b. foo=$( wc -l /etc/passwd | awk "print $1" )
    c. foo=$( wc -l </etc/passwd )
    d. foo=$( cat -c /etc/passwd )
    e. foo=$( wc /etc/passwd | awk echo $1 )

23. If bat=12 and cat=99 then which of the following command lines outputs only
    the word hi (and nothing else)?
    a. [ bat -ne cat ] && echo hi
    b. [bat!=bat] || echo hi
    c. [ bat = bat ] && echo hi
    d. [bat -eq 12] || echo hi
    e. [!bat = cat] && echo hi

24. What is the output on your screen of the following command sequence:
       f=1 ; touch f ; test ! -z $f ; echo $?
    a. the number 1 or 0 followed by another 1 or 0 on a new line
    b. no output
    c. 0
    d. 1
    e. test: $f: integer expression expected

25. If a=1 and b=1, which command sequence correctly compares the two numbers as
    equal and prints OK?
    a. if [ $a==$b ] ; then echo OK ; fi
    b. if test a -eq b ; then echo OK ; fi
    c. if ( a == b ) ; then echo OK ; fi
    d. if [ $a -eq $b ] ; then echo OK ; fi
    e. if [ a = b ] ; then echo OK ; fi

26. Which command sequence correctly searches for the chars and then prints OK
    if it is found inside the password file?
    a. if test chars /etc/passwd ; then echo OK ; fi
    b. if [ test chars /etc/passwd ] ; then echo OK ; fi
    c. if grep chars /etc/passwd ; then echo OK ; fi
    d. if [ grep chars /etc/passwd ] ; then echo OK ; fi
    e. if test chars = /etc/passwd ; then echo OK ; fi

27. What is the output on your screen of the following sequence of commands:
       x=0 ; y=1 ; touch $x ; test ! -z $x ; echo $?
    a. 0
    b. 1
    c. the number 1 or 0 followed by another 1 or 0 on a new line
    d. no output
    e. test: $x: integer expression expected

28. If cow=cow and pig=pig then which of the following command lines outputs
    only the date (and nothing else)?
    a. test cow -ne pig && date
    b. [!cow = pig] && date
    c. test cow = cow && date
    d. [cow!=cow] || date
    e. [cow -ne pig] || date

29. In a directory containing one file named dog, what appears on your screen
    after this command line?   1>/dev/null ls *
    a. *
    b. no output on screen
    c. ls: *: No such file or directory
    d. bash: 1>/dev/null: command not found
    e. dog

30. If foo is a file containing the first column of the output of the last
    command, which command line shows the most frequent login?
    a. sort foo | uniq -c | sort -nr | head -1
    b. uniq -c foo | sort -nr | head -1
    c. cat sort foo | uniq -c | sort -nr | head -1
    d. sort foo > uniq -c ; sort -nr uniq | head -1
    e. sort | uniq -c | sort -nr | head -1 foo

31. In an empty directory, how many lines are in file out after this bash shell
    command line:  ls  .  ..  nosuchfile  2>out
    a. 2
    b. no output (empty file)
    c. 4
    d. 1
    e. 3

32. If variable a might contain nothing (a null value - defined but empty),
    which command sequence correctly tests for this and prints the date?
    a. if test "" -eq $a ; then date ; fi
    b. if [ "$a" = * ] ; then date ; fi
    c. if [ '''' = ''$a'' ] ; then date ; fi
    d. if test "" = "$a" ; then date ; fi
    e. if [ $a = /dev/null ] ; then date ; fi

33. If a=cow and b=dog then what is the output on your screen of the following
    sequence of commands:   [ $a = dog -o $b = dog ] ; echo $?
    a. 1
    b. the number 1 or 0 followed by another 1 or 0 on a new line
    c. 0
    d. test: $a: integer expression expected
    e. no output

34. What is the output on your screen of the following sequence of commands:
       i=0 ; test $i = 00 ; echo $?
    a. 1
    b. no output
    c. 0
    d. the number 0 or 1 followed by another 0 or 1 on a new line
    e. test: $i: integer expression expected

35. Which command line tells you the recursive count of all pathnames under the
    current directory and all subdirectories?
    a. wc "$PATH"
    b. ls | wc
    c. wc .
    d. find | wc
    e. wc *

36. What is the output on your screen of the following sequence of commands:
       a=cow ; b=dog ; touch $a ; test -z $a ; echo $?
    a. 1
    b. 0
    c. test: $a: integer expression expected
    d. no output
    e. the number 1 or 0 followed by another 1 or 0 on a new line

37. If a=cow and b=dog then what is the output on your screen of the following
    sequence of commands:   [ $a = dog -o $b = cow ] ; echo $?
    a. no output
    b. 1
    c. the number 1 or 0 followed by another 1 or 0 on a new line
    d. 0
    e. test: $a: integer expression expected

38. If a=cow and b=dog then what is the output on your screen of the following
    sequence of commands:   if $a = $b ; then echo $a ; fi
    a. no output
    b. cow
    c. test: cow: integer expression expected
    d. test: $a: integer expression expected
    e. bash: cow: command not found

39. Which command line locates scripts in the /bin directory?
    a. ls /bin/* | file | grep script
    b. cat /bin/* | file | grep script
    c. cat /bin | file | grep script
    d. file /bin/* | grep script
    e. file /bin | grep script

40. What is the output on your screen of the following sequence of commands:
       x=1 ; y=2 ; test $x -le $y ; echo $?
    a. test: $x: integer expression expected
    b. 0
    c. no output
    d. the number 0 or 1 followed by another 0 or 1 on a new line
    e. 1

41. What is the output on your screen of the following sequence of commands:
       a=1 ; b=2 ; test $a -ge $b ; echo $?
    a. no output
    b. 1
    c. the number 1 or 0 followed by another 1 or 0 on a new line
    d. test: $a: integer expression expected
    e. 0

42. What is the output on your screen of the following sequence of commands:
       x=0 ; test $x ; echo $?
    a. no output
    b. the number 0 or 1 followed by another 0 or 1 on a new line
    c. 1
    d. 0
    e. test: $x: integer expression expected

43. If a=ant and b=bat then what is the output on your screen of the following
    command sequence:   [ $a = bat -o $b = bat ] ; echo $?
    a. 1
    b. test: $a: integer expression expected
    c. the number 1 or 0 followed by another 1 or 0 on a new line
    d. no output
    e. 0

44. What is the output on your screen of the following command sequence:
       a=1 ; b=2 ; test $a -ge $b ; echo $?
    a. 0
    b. 1
    c. the number 1 or 0 followed by another 1 or 0 on a new line
    d. test: $a: integer expression expected
    e. no output

45. Which command sequence below always outputs just the date only if the first
    argument is either a file or a directory?
    a. if [ "$1" -eq -f -o "$1" -eq -d ]; then date ; fi
    b. if [ -f || -d "$1" ]; then date ; fi
    c. if [ -f -o -d "$1" ]; then date ; fi
    d. if [ -f "$1" -o -d "$1" ]; then date ; fi
    e. if [ "-f $1" || "-d $1" ]; then date ; fi

46. In an empty directory, how many lines are in file foo after this command
    line: ls  nosuchfile  .  ..  2>foo
    a. 2
    b. empty file (no data)
    c. 1
    d. 4
    e. 3

47. Which command sends a file to a remote machine foo.ca?
    a. mv one foo.ca:two
    b. cat one >foo.ca:two
    c. scp one >foo.ca:two
    d. cp one foo.ca:two
    e. scp one foo.ca:two

48. In an empty directory, how many lines are in file bar after this command
    line: ls  .  nosuchfile  1>bar
    a. 2
    b. empty file (no data)
    c. 1
    d. 4
    e. 3

49. What is the output on your screen of the following sequence of commands:
       x=cow ; y=dog ; touch $x ; test -z $x ; echo $?
    a. the number 0 or 1 followed by another 0 or 1 on a new line
    b. 1
    c. 0
    d. no output
    e. test: $x: integer expression expected

50. Which command line shows just the count of lines in the file?
    a. wc file | awk '{print #1}'
    b. wc file | awk '{print 1}'
    c. wc file | awk '[print #1]'
    d. wc file | awk '[print $1]'
    e. wc file | awk '{print $1}'

51. Which command sequence correctly compares the numbers and prints OK?
    a. if [ 2 > 1 ] ; then echo OK ; fi
    b. if [ ! 2 < 1 ] ; then echo OK ; fi
    c. if ( 1 let 2 ) ; then echo OK ; fi
    d. if ( let 2 > 1 ) ; then echo OK ; fi
    e. if [ 1 -lt 2 ] ; then echo OK ; fi

     Answer Key - NET2003 - Ian Allen - Winter 2006 - NET2003 Practice Test

   1. c                                    With 5 choices: 51
   2. e
   3. c                                    Macro .cmd split with indent: 20
   4. d
    5. c
    6. c
    7. c
    8. c
   9. e
  10. b
  11. c
  12. e
   13. b
   14. a
   15. d
   16. d
  17. c
  18. a
  19. e
  20. d
   21. e
   22. c
   23. c
   24. c
  25. d
  26. c
  27. a
  28. c
   29. b
   30. a
   31. d
   32. d
  33. c
  34. a
  35. d
  36. a
   37. b
   38. e
   39. d
   40. b
  41. b
  42. d
  43. e
  44. b
   45. d
   46. c
   47. e
   48. c
  49. b
  50. e
  51. e

Count of a:  6  12%
Count of b:  8  16%
Count of c:  16  31%
Count of d:  11  22%
Count of e:  10  20%