OSFinal

Question 1

1)What is the alternative of 361 permission?

Accepted Answer

-wxrw---x

Answer

rw-r-x-wx

Answer

rw-rw-r-x

Answer

rw-r-x-x

Question 2

Which line executes the script chech_status.sh on 10th June 08:30 AM

Accepted Answer

30 08 10 06 * check_status.sh

Answer

08 30 10 06 * check_status.sh

Answer

30 08 06 10 * check_status.sh

Answer

06 30 08 * check_status.sh

Question 3

Which permission belongs to 260 umask

Accepted Answer

r-x--xrwx

Answer

rw---xr-x

Answer

r-x---rw-

Answer

r-xr-xr-x

Question 4

Which signal is a program termination signal (kill will send this by default)?

Accepted Answer

SIGTERM

Answer

SIGIOT

Answer

SIGQUIT

Answer

SIGINT

Answer

SIGSTP

Question 5

What is the alternative of 165 permission?

Accepted Answer

--xrw-r-x

Answer

-wxr-x-wx

Answer

--xr-x-wx

Answer

--x-rw-r-x

Question 6

How many built-in-rules do iptables have?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 7

Using which expression(s) we can write the result of and expression to variable?

Accepted Answer

double parentheses

Answer

let

Answer

expr

Answer

expr with command substitution

Question 8

How can you add read and execute permission to owner for file quiz.txt

Accepted Answer

chmod u+rx quiz.txt

Answer

chmod o=rx quiz.txt

Answer

umask o+rx quiz.tx

Answer

chmod u-rx quiz.txt

Answer

chmod o+rx quiz.txt

Question 9

in ACCEPT target the packet its handed over to the end application or the operationg system for processing

Answer

true

Question 10

Which table is the default table for handling network packets?

Accepted Answer

filter

Answer

nat

Answer

mangle

Question 11

What will be the output if we will run script: ./quiz.sh 200 
Filename: quiz.sh

Accepted Answer

Script won't run because an error

Answer

A

Answer

B

Answer

C

Question 12

Which chain applies to locally-generated network packets

Accepted Answer

OUTPUT

Answer

PREROUTING

Answer

FORWARD

Answer

INPUT

Answer

POSTROUTING

Question 13

We can group a sequence of characters using open and close brackets?

Answer

true

Question 14

How can we make regular expression case insensitive?

Accepted Answer

By starting the pattern with "(?i)

Answer

By ending the pattern with "(?c)

Answer

By ending the pattern with "(?i)

Answer

By starting the pattern with "(!i)"

Question 15

When using expr we need to enclose the expression in quotes

Answer

true

Question 16

/etc/passwd contains password related information for accounts

Answer

true

Question 17

Which permission belongs to 452 umask?

Accepted Answer

-wx-w-r-x

Answer

rwxrw-r-x

Answer

r---xrw-

Answer

rw-r-xrwx

Question 18

REJECT target works like the DROP target, but doesn't return an error message

Answer

true

Question 19

What command is used to modify a file's owner?

Accepted Answer

chown

Answer

ls

Answer

chmod

Answer

touch

Question 20

Which table used to alter packets that create a new connection.

Accepted Answer

nat

Answer

filter

Answer

mangle

Question 21

One account has elevated privileges to issue any command, access any file, and peform every function

Accepted Answer

Root, root, superuser, Superuser

Answer

any

Question 22

Which of these funtions has security risks?

Accepted Answer

System()

Answer

fork()

Answer

exec()

Question 23

The user and group number of root is 0

Answer

true

Question 24

Enter the name of file that contains the user accoutn information for your system

Accepted Answer

/etc/passwd

Answer

/etc/password

Answer

/etc/gshadow

Answer

/etc/shadow

Question 25

The parent process of all process in Linux called root

Answer

true

Question 26

Which table is used for specific types of packet alteration

Accepted Answer

mangle

Answer

nat

Answer

filter

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