202-450 Online Practice Questions and Answers

Which of the following is recommended to reduce Squid's consumption of disk resources?

A. Disable the use of access lists.

B. Reduce the size of cache_dir in the configuration file.

C. Rotate log files regularly.

D. Disable logging of fully qualified domain names.

E. Reduce the number of child processes to be started in the configuration file.

The listing below is an excerpt from a Squid configuration filE.

A. Users connecting from localhost will be able to access web sites through this proxy.

B. It's necessary to include a http_access rule denying access to all, at the end of the rules.

C. It's possible to use this proxy to access SSL enabled web sites listening on any port.

D. This proxy can't be used to access FTP servers listening on the default port.

E. This proxy is misconfigured and no user will be able to access web sites through it.

Journalling doesn't appear to be working on an ext3 file-system. When booting, the following line appears:

VFS: Mounted root (ext2 filesystem) readonly.

What could be causing the problem?

A. An old version of e2fsprogs is installed.

B. The kernel does not contain ext3 support.

C. The file-system is specified as ext2 in/etc/fstab.

D. The system was not shut down cleanly.

When configuring a PPP dial-in server, which option is used (in the pppd configuration file) to enable user authentication against the system password database?

A. login

B. auth

C. local

D. password

E. user

A new user was created on a master NIS server using useradd but cannot log in from an NIS client.

Older users can log in. Which step was probably forgotten, when creating the new user?

A. Running yppush on the NIS server to propagate map changes to NIS clients

B. Running make inside /var/yp on the NIS server to generate new maps

C. Starting the yppasswdd daemon on the NIS server to receive login re quests from NIS clients

D. Starting the ypxfr daemon on the NIS client to fetch map changes from the NIS server

E. Restarting ypxfr daemons on the NIS client and server to fetch map changes

Remote access to a CD-RW device on a machine on a LAN must be restricted to a selected user group. Select the TWO correct alternatives that describe the possible solutions for this problem.

A. The remote access to these devices can be allowed to users by changing the display manager configuration and allowing sudo access for the user that will log in remotely

B. The pam_console module allows access configuration to these devices via console, including simultaneous access by many users

C. The pam_console module can be used to control access to devices via console, allowing/denying access to these devices in the user's session

D. If the pam_console module is used, it must be checked as required, because it is essential for user authentication

E. Through the sudo configuration file, it is possible to set users that will have the power of the root user, so they can access the devices. Besides that, it is important to configure the /etc/pam.d/su file, so the PAM modules can secure the service

Where should the line:

$TTL 86400 be placed in a BIND zone file?

A. As the first line of the zone file.

B. In any zone file containing hints to the root servers.

C. In the SOA record of the zone file.

D. It is required just before any A records are defined.

On a Linux router, packet forwarding for IPv4 has been enabled. After a reboot, the machine no longer forwards IP packets from other hosts. The commanD.

echo 1 > /proc/sys/net/ipv4/ip_forward temporarily resolves this issue. Which one of the following options is the best way to ensure this setting is saved across system restarts?

A. Add echo 1 > /proc/sys/net/ipv4/ip_forward to the root user login script.

B. Add echo 1 > /proc/sys/net/ipv4/ip_forward to any user login script.

C. In /etc/sysctl.conf change net.ipv4.ip_forward to 1.

D. In /etc/rc.local add net.ipv4.ip_forward = 1.

E. In /etc/sysconfig/iptables-config add ipv4.ip_foward = 1.

Which Postfix command can be used to rebuild all of the alias database files with a single invocation?

A. makealiases

B. newaliases

C. postalias

D. postmapbuild

When using mod_authz_core, which of the following strings can be used as an argument to Require in an Apache HTTPD configuration file to specify the authentication provider? (Choose three.)

A. method

B. all

C. regex

D. header

E. expr