Final Exam

Question 1

A file system must be mounted to the root file system before it can be used

Answer 1

True

Question 2

The CGI Scripts can be used to generate HTML dynamically

Answer 2

True

Question 3

Once a background process has been launched by a terminal session the process remains attached to the terminal that launched it

Answer 3

False - Only foreground processes remain attached to the terminal

Question 4

Once a foreground process has been launched by a terminal session it becomes unattached to the terminal until the foreground process completes

Answer 4

False

Question 5

The advantage of incremental backups is to copy those files that have a more recent time stamp since the last full backup

Answer 5

True

Question 6

The inode stores metadata like the count of hard links, the file size and file permissions

Answer 6

True

Question 7

During the bootup procedure, stored instructions are loaded from a nonvolatile memory device such as a Read Only Memory or ROM, flash memory, or non volatile RAM to be executed

Answer 7

True

Question 8

The cron utility allows user to schedule programs for periodic execution

Answer 8

True

Question 9

The file delimiter for the /etc/password file is a : not a ; The /etc/inittab file is used to define the time of day and the day of the week that a recurring process would be executed

Answer 9

False

Question 10

The Inode keeps account of the number of symbolic links that reference a given file

Answer 10

False - the inode only keeps track of physical links

Question 11

The Shadow file contains the encrypted password and all the attributes associated with the password.

Answer 11

True

Question 12

The Unix like operating system kill command can be used to send different types of signals to a process

Answer 12

True

Question 13

The hard links allow a single resource to be referenced by different file names

Answer 13

True

Question 14

The Unix like operating system kill command can be used by root or super user to terminate any user process on the system

Answer 14

True

Question 15

The default permissions for a file and a directory are determined by the umask variable value. The umask value is located in the $HOME/.profile

Answer 15

True

Question 16

Each mounted file system is represented by an entry in the Superblock

Answer 16

True

Question 17

What adding a new user to a Unix like system the files that are affected are the /etc/password /etc/shadow and /etc/group file

Answer 17

True

Question 18

The system administrator uses single user mode to make up dates and directions to the system without the user community accessing the system

Answer 18

True

Question 19

In Unix and Linux what does the who -r command do in all Unix like systems?

Answer 19

It provides you with the system run level

Question 20

The Kernel is the central component of the Operating System. It interfaces with the shells, the applications, and other hardware devices

Answer 20

True

Question 21

The init process is considered the parent of all user processes

Answer 21

True

Question 22

The fscheck finds lost and broken files in the /temp/lost directory

Answer 22

False - Answer would be Lost and Found

Question 23

When a child processes ends a sig child signal is sent to the parent process from the Kernel indicating their child exited

Answer 23

True

Question 24

The amount command is used to attach a file system to the file system hierarchy root

Answer 24

True

Question 25

Using the shutdown command is the safest and most reliable way to bring a computing system down

Answer 25

True

Question 26

In Perl the array link is determined and the arrays cannot grow dynamically during runtime

Answer 26

False

Question 27

In Perl a file handle name must be identical to the original file name

Answer 27

False

Question 28

The kill command is used to delete processes from the process table

Answer 28

True

Question 29

The array that collects up all of the command line variables in Perl is named @ARGV

Answer 29

True

Question 30

In Perl a module is imported into a program or script by using the USE declaration

Answer 30

True

Question 31

A package manager and a manual Unix or Linux Executable share a similar characteristic they both have to deal with dependencies having to do with the makefile

Answer 31

True

Question 32

There are pieces of the initialization software that are configured into subsystems and are interdependent on each other

Answer 32

True

Question 33

The entire Kernel executes in Kernel space to maximize system performance

Answer 33

True

Question 34

Linux utilizes the values 0 - 6 to represent the different system run levels

Answer 34

True

Question 35

The getopt:: standard module provides 2 functions getopt and getopts

Answer 35

True

Question 36

The master boot record is the final step in the initialization process

Answer 36

False

Question 37

the init process can be created by either the Master Boot Record or the Kernel during the system bootup

Answer 37

True

Question 38

System Panic

Answer 38

An irrecoverable error that come from the kernel

Question 39

Unix system hardware configuration is determined by the XINET daemon

Answer 39

False

Question 40

The INITRD Daemon contains a set of hardware drivers that are downloaded during the system initialization

Answer 40

True

Question 41

The address space that is allocated for child process is overwritten so that a specific process can be executed using the execute exec system call

Answer 41

True

Question 42

In Redhat enterprise 6.0 that boot up procedure is identified as the upstart

Answer 42

True

Question 43

The existence of an orphan process on a system consumes memory and CPU cycles, uses disk space and decreases system performance

Answer 43

True

Question 44

An orphan process eventually becomes a zombie process

Answer 44

False

Question 45

A zombie process can be identified by using the ps -aux command

Answer 45

Trie

Question 46

The presence of a zombie process is displayed by a Z under the stat column and under the column heading

Answer 46

True

Question 47

The asterisks * in the cron tab is used to refer to to match all values

Answer 47

True

Question 48

Both Unix and Linux operating systems apply security measures to files by assigning permissions to the file attributes like owner, group and other

Answer 48

True

Question 49

Is it true that the operating system cannot designate a different file permission to a different user

Answer 49

True

Question 50

When a child process ends the kernel sends a sync child signal to the parent. If the parent responds with a wait system call the child process is reaped from the system and all previous allocated resources are returned to the Operating System

Answer 50

True

Question 51

If an orphan process exists on a system the init process tries to become the new parent (reparenting) so that it can try to normalize the child and make it removable from the system

Answer 51

True

Question 52

An inode stores information about the file but it does not store the filename and the actual data

Answer 52

True

Question 53

The FSCHECK utility executes early during the boot process to identify broken files on the root filesystem. This is done prior to other file systems being mounted on the root file system

Answer 53

True

Question 54

The Lost + Found directory contains broken files from disk errors caused possibly by abrupt system shutdowns and power failures

Answer 54

True

Question 55

The telinit command is used to change the runlevels on Unix, Linux, and HPUX systems.

Answer 55

True

Question 56

During the boot process Redhat 6.0 references the /etc/inittab file for one purpose to access the initdefault runlevel variable. There is only one statement in that file that it is looking for

Answer 56

True

Question 57

In Unix like Operating Systems the uid determines the identity of the user after they are granted access to the system

Answer 57

True

Question 58

When a system runlevel is changed running processes are not specified for the new runlevel are killed. The unwanted processes are first sent a term signal the a kill signal

Answer 58

True

Question 59

The initdefault action entry specifies the runlevel the system will enter after the system boots

Answer 59

True - on cs.franklin.edu this is runlevel 3 in Knoppix it is runlevel 5

Question 60

A filter is a program designed to read a stream of input transform it and output this new data (translate command)

Answer 60

True

Question 61

After the init process performs its initialization functions or chores the system is ready to be accessed by the user

Answer 61

True

Question 62

The filesystem superblock is located at the beginning of each partition

Answer 62

True

Question 63

The main purpose of the filesystem is to ensure that stored data remains constant

Answer 63

True

Question 64

SELinux was developed by NASA to restrict Kernel's functionality

Answer 64

True

Question 65

The NFS of Network File System is a file and directory sharing mechanism that is native to Unix

Answer 65

True

Question 66

SAMBA is the standard Windows interoperability suite of programs for Linux and Unix

Answer 66

True

Question 67

The physical link allows data to be referenced across different file systems with no restrictions and serve as another path to access data

Answer 67

False - A physical link is confined to a certain directory

Question 68

The /proc/filesystems file lists the filesystems support by the running kernel

Answer 68

True

Question 69

The nodev string in the first column means that a file system does not require a block device to be mounted. It is called a virtual filesystem

Answer 69

True

Question 70

EPCIDIC is an 8bit character encoding used by IBM mainframes and their AS 400s

Answer 70

True

Question 71

The role of the boot loader is to place the operating system in memory

Answer 71

True

Question 72

The umask provides the file and directory default permissions. That is the variable but there is a umask command and that command displays the directory whether it is a directory or a file default permissions

Answer 72

True

Question 73

The terminal can be either hardware terminals TY or psuedo terminals PTS. Hardware terminals are connected over some interface such as a serial port or USB or over a PC screen and keyboard TTY1. The psuedo terminals are provided a terminal emulator which is an application

Answer 73

True

Question 74

In a Linux operating system TTY ports are direct connections to the computer such as a keyboard, mouse or serial connection to a device

Answer 74

True

Question 75

When a user telnets into a system Linux sets up a pair of terminals they are a master and a slave. The terminals reside in the directory /dev/pts of the appropriate host and is named for the terminal number /dev/pts/0 Both the TTY and the PTS connections can connect to a shell which will allow you to issue commands to the computer

Answer 75

True

Question 76

The major ID identifies the general class of device and is used by the kernel to look up the appropriate driver for this type of device

Answer 76

True

Question 77

The minor ID uniquely identifies the particular device within a general class

Answer 77

True

Question 78

When a computer program makes a request of the kernel the request is called a system call

Answer 78

True

Question 79

The Unix shell maintains a complete set of environmental variables that provide information about different areas of the operating system

Answer 79

True

Question 80

The environment variables are not passed all scripts and programs that are not built in the shell but may be accessed or modified by a program

Answer 80

False

Question 81

A POSIX is a standard mandate for filesystems behaviour that is strongly influenced by the traditional Unix file systems

Answer 81

True

Question 82

The root directory is the only directory that is its own parent. It has both the . and the .. are the same in the root directory. If you go to the parent root directory you are still in the root directory

Answer 82

True

Question 83

What type of password encryption is used most among Linux Operating Systems

Answer 83

MD5

Question 84

What Unix like Operating System function is used to create a child process

Answer 84

Normal fork and execute (exec)

Question 85

File Permissions for a file are stored in which file

Answer 85

inode

Question 86

What information is stored in the inode

Answer 86

``` Access modes username group filetype file size ```

Question 87

When a user logs into a system and their local and global variables are available for use what term best describes that availability of information

Answer 87

Environment

Question 88

$#

Answer 88

Stores the number of command-line arguments that were passed to the shell program.

Question 89

$!

Answer 89

The PID of the most recently started background process

Question 90

What are some of the prefixes used in Perl?

Answer 90

$ - singular variable % - hash @ - array

Question 91

A child process is created by a parent process, what is the child's PPID

Answer 91

The child's PPID is the same as the parents PID

Question 92

What Unix, Linux or HPUX Operating system command command to troubleshoot and fix any filesystem errors

Answer 92

FSCHECK

Question 93

What directory is used for storing optional software packages

Answer 93

/OPT

Question 94

Identify the Unix Operating System security issues

Answer 94

path variables the use of the umask variable and change mod command The file and directory access modes Restricted uses of the UUCP suite of commands

Question 95

during the bootup procedure the Unix kernel performs a series of tasks that helps complete the initialization process

Answer 95

determines memory size mounts the root partition configures the hardware devices

Question 96

What files are affected when a new user is added to the Linux system?

Answer 96

Password Shadow Group file

Question 97

Kernel functions can be categorized into 2 broad types

Answer 97

responsive | autonomous

Question 98

On Unix like Operating Systems the user access to the kernel is through what type of interface

Answer 98

Shell - considered as another application by the OS

Question 99

The copy on write term is best identified

Answer 99

Optimization strategy for the Operating System

Question 100

What information is stored in a Linux file system superblock?

Answer 100

a pointer to the superblock magic number name of the device that the file system is mounted on basic block size of the file system

Question 101

When kernel functions such as allocation of memory and CPU are performed without being explicitly requested by a user process

Answer 101

Autonomous Process

Question 102

The Unix like file system is arranged is what type of configuration

Answer 102

inverted tree topology

Question 103

What is the function of a crond daemon

Answer 103

initiates the crontab events - executes every minute looking for something to execute

Question 104

2 pieces of information are needed when we initialize CGI scripts

Answer 104

a program and a directory to store CGI scrips | a link to an HTML page

Question 105

What Unix like command is used

Answer 105

28:55