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 command ___________ -x foo will delete the user foo from the Samba database. (Specify the command only, no path information.)

A. smbpasswd

You suspect that you are receiving messages with a forged From: address. What could help you find out where the mail is originating?

A. Install TCP wrappers, and log all connections on port 25

B. A dd the command 'FR-strlog' to the sendmail.cf file

C. Add the command 'define ('LOG_REAL_FROM') dnl' to the sendmail.mc file

D. Run a filter in the aliases file that checks the originating address when mail arrives

E. Look in the ReceiveD. and Message-ID. parts of the mail header

In which configuration file can a key-file be defined to enable secure DNS zone transfers? (Please enter the file name without the path)

A. named.conf

A network client has an ethernet interface configured with an IP address in the subnet 192.168.0.0/24.

This subnet has a router, with the IP address 192.168.0.1, that connects this subnet to the Internet.

What needs to be done on the client to enable it to use the router as its default gateway?

A. Run route add default gw 192.168.0.1 eth1.

B. Run route add gw 192.168.0.1 eth1.

C. Run ifconfig eth0 defaultroute 192.168.0.1.

D. Add "defaultroute 192.168.0.1" to /etc/resolv.conf.

E. Run route add defaultgw=192.168.0.1 if=eth0.

Which of these tools can provide the most information about DNS queries?

A. dig

B. nslookup

C. host

D. named-checkconf

E. named-checkzone

Which command can be used when writing scripts which perform tests against remote services?

A. snort

B. netmap

C. nc

D. telnet

Why should the Postfix parameter disable_vrfy_command be set to yes on a publicly accessible mail server?

A. It prevents e-mail delivery attempts to a non-existent user.

B. It prevents some techniques of gathering existing e-mail addresses.

C. It enables verification attempts on the sender e-mail address.

D. It speeds up forwarding of relayed e-mail.

How must Samba be configured so that it can check passwords against the ones in /etc/passwd and /etc/shadow?

A. Set the parameters "encrypt passwords = yes" and "password file = /etc/passwd".

B. Set the parameters "encrypt passwords = yes", "password file = /etc/passwd" and "password algorithm = crypt".

C. Delete the smbpasswd file and create a symbolic link to the passwd and shadow file.

D. It is not possible for Samba to use /etc/passwd and /etc/shadow directly.

E. Run smbpasswd to convert /etc/passwd and /etc/shadow to a Samba password file.

Which command is used to tell the NFS server which filesystems to make available to clients?

A. exportfs

B. mkfs.nfs

C. mount

D. nfsservctl

E. telinit