EC COUNCIL-212-77 - Linux Security Set 1

1.

Which of the following is true of Linux passwords?

They are changed with the password utility. They must be changed once a month. They may consist only of lowercase letters and numbers. They may be changed by the user who owns an account or by root.

2.

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?

vi /etc/shadow sudo -c vi /etc/shadow su -c vi /etc/shadow visu vi /etc/passwd

3.

Under the bash shell which is the most appropriate place to set environment variables that apply to all users?

/etc/skel rc.sysinit /etc/profile /etc/bashrc rc.local

4.

Which of the following measures is the most effective way to prevent attacks through various network services?

Disable a service in the appropriate /etc/xinetd.d configuration file. Use a firewall to drop all requests to unneeded services. Block service requests with the appropriate commands in /etc/hosts.deny. Uninstall unneeded network services.

5.

Which of the following statements applies to the IP address 192.168.0.1?

It is reserved. It cannot be assigned to a host that accesses the Internet. It is designated for multicast transmission. It can be freely assigned to a host on a private network

6.

Which of the following are ways to disable dynamic routing?

The linuxconf Gated Daemon screen The linuxconf Routed Daemon screen

echo 0 > /proc/sys/net/ipv4/dynamic_routing

Editing /etc/sysconfig/network-scripts

7.

Which of the following is not a Linux DHCP client?

dhcpcd pump dhcpd dhclient

8.

How should you engage users in helping to secure your computer's passwords?

Educate them about the importance of security, the means of choosing good passwords, and the ways crackers can obtain passwords. Instruct your users to e-mail copies of their passwords to themselves on other systems sothat theyre readily available in case of an emergency. Enforce password change rules but don't tell users how crackers obtain passwords since youcould be educating a future cracker. Give some of your users copies of the encrypted database file as backup in case a crackerbreaks in and corrupts the original.

9.

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?

man syslog 3 man 3 syslog man syslog -3 man -3 syslog

10.

Which statement describes the cron daemon?

Manages scheduling of routine system tasks Manages all incoming connections and spawns off child processes Is responsible for file sharing across a network Keeps track of system messages and errors Manages the printing subsystem

EC COUNCIL-212-77 - Linux Security Set 1

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EC COUNCIL-212-77 - Linux Security Set 1

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