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Guide for Linux Security

Quiz Linux Security

Free Test
/ 10

Quiz

1/10
Which of the following is true of Linux passwords?
Select the answer
1 correct answer
A.
They are changed with the password utility.
B.
They must be changed once a month.
C.
They may consist only of lowercase letters and numbers.
D.
They may be changed by the user who owns an account or by root.

Quiz

2/10
Assume that you have just logged on as a regular user. Which of the following commands allows you to edit the file with user passwords associated with the Shadow Password Suite?
Select the answer
1 correct answer
A.
vi /etc/shadow
B.
sudo -c "vi /etc/shadow"
C.
su -c "vi /etc/shadow"
D.
visu vi /etc/passwd

Quiz

3/10
Under the bash shell which is the most appropriate place to set environment variables that apply to all users?
Select the answer
1 correct answer
A.
/etc/skel
B.
rc.sysinit
C.
/etc/profile
D.
/etc/bashrc
E.
rc.local

Quiz

4/10
Which of the following measures is the most effective way to prevent attacks through various network services?
Select the answer
1 correct answer
A.
Disable a service in the appropriate /etc/xinetd.d configuration file.
B.
Use a firewall to drop all requests to unneeded services.
C.
Block service requests with the appropriate commands in /etc/hosts.deny.
D.
Uninstall unneeded network services.

Quiz

5/10
Which of the following statements applies to the IP address 192.168.0.1?
Select the answer
1 correct answer
A.
It is reserved.
B.
It cannot be assigned to a host that accesses the Internet.
C.
It is designated for multicast transmission.
D.
It can be freely assigned to a host on a private network

Quiz

6/10
Which of the following are ways to disable dynamic routing?
Select the answer
1 correct answer
A.
Thelinuxconf Gated Daemon screen
B.
Thelinuxconf Routed Daemon screen
C.
echo "0" > /proc/sys/net/ipv4/dynamic_routing
D.
Editing /etc/sysconfig/network-scripts

Quiz

7/10
Which of the following is not a Linux DHCP client?
Select the answer
1 correct answer
A.
dhcpcd
B.
pump
C.
dhcpd
D.
dhclient

Quiz

8/10
How should you engage users in helping to secure your computer's passwords?
Select the answer
1 correct answer
A.
Educatethem about the importance of security, the means of choosing good passwords, and the ways crackers can obtain passwords.
B.
Instruct your users to e-mail copies of their passwords to themselves on other systems sothat they're readily available in case of an emergency
C.
Enforce password change rules but don't tell users how crackers obtain passwords since you could be educating a future cracker.
D.
Give some of your users copies of the encrypted database file as backup in case a cracker breaks in and corrupts the original.

Quiz

9/10
Which of the following are risks of SUID and SGID programs? (Choose two)
Select the answer
2 correct answers
A.
Bugs in the programs may cause more damage than they would in ordinary programs.
B.
The program files are large and thus may cause a disk to run out of space.
C.
Because the programs require password entry, running them over an insecure network link runs the risk of password interception.
D.
Users may be able to abuse a program's features, thus doing more damage than would otherwise be possible.

Quiz

10/10
You are told by a co-worker that information pertaining to the syslog command can be found in man page 3. How would you view this information?
Select the answer
1 correct answer
A.
mansyslog 3
B.
man 3syslog
C.
mansyslog -3
D.
man -3syslog
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