One common storage model is
    known as DAS. What are the other
    two main storage models we discussed?

    Which of the following is different
    from the others?

    a) Perl
    b) Python
    c) Ruby
    d) Go
    e) Haskell

    Why / How?

    Which of the following files determines
    which nameserver should be queried?

    a) /etc/nsswitch.conf
    b) /etc/domain
    c) /etc/hosts
    d) /etc/resolv.conf
    e) none of the above, it's   _____________________________

    The three conceptual areas in which cryptography
    may help provide security.

    This tool can be used to view the system calls,
    signal processing and I/O an executable performs.

   Which of the following is information NOT stored
   in the inode of a traditional UNIX filesystem?

   (a) file name
   (b) file creation time
   (c) number of symbolic links pointing to this file
   (d) user-id of the last person to access the file
   (e) all of the above are NOT found
   (f) all of the above ARE found in the inode

    Name three reasons why this command might fail:

    $ ls *.c 2>&1 | tee /tmp/out | wc -l

    Applications using this protocol include
    ping(8) and traceroute(8). It is also used for PMTUD.

    This kind of technique, which allows the attacker
    to redirect the victim's traffic, is often prefixed
    with either "ARP" or "DNS".

    The attacker either needs access to the network or
    win a race condition.

    Describe the stages of a typical boot sequence.

   Which of the following is FALSE:

   (a) No two filesystem partitions may overlap.
   (b) The BIOS can only boot a disk from the first 512 bytes.
   (c) You can have more than one swap partition.
   (d) You can have different filesystem types on different
       partitions.
   (e) none of the above is false
   (f) all of the above is false

    When does this crontab execute?

    23 0-23/2 * * 1-5  /usr/local/bin/hfrob

    The "/YY" in a netmask XXX.XXX.XXX.XXX/YY notation specifies

    a) the number of hosts on this subnet
    b) the number of bits in the network portion of the address
    c) the number of bits in the host portion of the address
    d) the number of subnets this host is part of
    e) none of the above

    Give an example for each of the three main ways of
    proving that you are who you say you are.

    Who can remove the file 'goner'?

    $ ls -la
    total 6
    drwxr-xr-x   2 root      wheel   80 Apr 22 14:37 .
    drwxr-xr-x  23 root      wheel  512 Jan 12 21:32 ..
    -rw-rw-r--   1 jschauma  sys      0 Apr 22 14:37 goner
    -rw-rw-rw-   1 jschauma  wheel    0 Apr 22 14:37 keeper
    $ groups jschauma
    users wheel
    $

    Explain this behaviour:

    $ pwd
    /mnt
    $ df -h .
    Filesystem        Size       Used      Avail %Cap Mounted on
    tmpfs              20M       5.5M        15M  27% /mnt
    $ echo moo > file
    sh: cannot create file: file system full
    $ echo moo > dir/file
    $ echo $?
    0
    $ mv dir/file file
    $ echo $?
    0
    $ echo moo > file
    $ echo $?
    0
    $ echo moo > dir/file
    sh: cannot create file: file system full

  What does this script do?

  $ cat script
  #! /bin/sh
  IFS='
  '
  for pair in $(awk -F: '{ print $4 " " $1 }' \
                /etc/passwd | sort -n); do
      g=${pair% *}
      n=${pair#* }
      G=$(sed -n -e "/:${g}:/ s/\(.*\):x:${g}:.*/\1/p" /etc/group)
      echo "${n}:${G}"
  done
  $

    Which of the following is NOT a valid IPv6 address:

    (a) 0::1
    (b) ::ffff:7F00:1%lo0
    (c) ::ffff:127.0.0.1
    (d) 0000:0000:0000:0000:0000:ffff:7f00:0001
    (e) all of the above
    (d) none of the above

    Explain briefly the main problem with the concept
    of a Certificate Revocation List.

    The correct regular expression to match an IPv6 address is:

    (a) ([a-f0-9:]+){,8}
    (b) ((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4]
          [0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?\.
          (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4]
          [0-9]|[01]?[0-9][0-9]?)
    (c) \d{,3}\.\d{,3}\d\.{,3}\.\d{,3}
    (d) inet_pton(AF_INET6, $ip)
    (e) all of the above
    (f) none of the above