202-450 Dumps with Practice Exam Questions Answers

 The mydestination parameter in the Postfix main.cf configuration file specifies the list of domains that are delivered via the $local_transport mail delivery transport. This means that Postfix will accept mail for those domains and deliver it to local mailboxes. To accept mail for both the old and new domain names, the mydestination parameter should include both domains, separated by commas. For example:

mydestination = olddomain.com, newdomain.com, localhost

This will allow Postfix to accept mail for user@olddomain.com and user@newdomain.com and deliver it to the same local user mailbox.

References:

• LPIC-2 Exam 202 Objectives, Objective 205.3: Managing a postfix server
• Postfix Basic Configuration, Postfix Documentation
• Postfix Configuration Parameters: mydestination, Postfix Documentation
• How to configure Postfix to receive mail for multiple domains, Server Fault

According to the configuration, the postmaster address is set to postmaster@domain.com. This means that any system-generated messages or notifications sent to the administrator of this domain will use this address as the sender. The postmaster address is also used to receive messages from external senders who need to contact the administrator for any reason, such as reporting spam or abuse. The postmaster address is a mandatory requirement for any mail server, as specified by the RFC 5321 standard. References:

• LPIC-2 exam 202 objectives, topic 207.3, Manage the postfix mail system
• RFC 5321, section 4.5.1, Postmaster Role

To join a file server to an Active Directory domain, the smb.conf file must specify the realm and the workgroup parameters correctly. The realm parameter is the DNS name of the Active Directory domain, in uppercase letters. The workgroup parameter is the NetBIOS name of the domain, which is usually the first part of the DNS name, but can be different. For example, if the DNS name of the domain is intra.example.com, the NetBIOS name could be INTRA or something else. To find out the NetBIOS name of the domain, you can use the command net ads info on a Linux machine that has Samba installed, or the command nltest /dsgetdc:intra.example.com on a Windows machine that is joined to the domain. The other options are either incorrect or irrelevant for this question. 

 The ErrorLog directive of the Apache HTTPD server defines the location and name of the file where the server will log any errors it encounters. The default value of this directive is logs/error_log, which means that the error log file will be stored in the logs subdirectory of the server root directory. The ErrorLog directive can also accept a filename relative to the server root, an absolute filename, or a pipe to a program that will handle the logging. For example, ErrorLog logs/my_error_log will store the error log file in the logs subdirectory with the name my_error_log, ErrorLog /var/log/httpd/error_log will store the error log file in the /var/log/httpd directory with the name error_log, and ErrorLog “|bin/rotatelogs logs/error_log 86400” will pipe the error log to the rotatelogs program that will rotate the log file every 86400 seconds. References: Log Files - Apache HTTP Server Version 2.4, Directive Quick Reference - Apache HTTP Server Version 2.4, How do I find Apache http server log files? – Code A Site Blog, mod_log_config - Apache HTTP Server Version 2.2

The cache_dir directive in the Squid configuration file specifies the type, location, size, and structure of the cache directory. The ufs type indicates that Squid uses the UNIX file system to store the cache files. The /var/spool/squid3/ is the path to the cache directory. The 1024 is the size of the cache in megabytes. The 16 and 256 are the number of first-level and second-level subdirectories that Squid creates under the cache directory.

Squid uses hexadecimal numbers to name the subdirectories, from 00 to FF. Therefore, there will be 16 first-level subdirectories, named 00, 01, 02, …, 0E, 0F. Under each first-level subdirectory, there will be 256 second-level subdirectories, named 00, 01, 02, …, FE, FF. For example, the subdirectory /var/spool/squid3/0F/FF will contain the cache files whose hash values end with 0FFF.

Therefore, the correct answer is A. 0F and E. 00, as they are the names of the first-level subdirectories that will exist directly within the directory /var/spool/squid3/. The other options are either invalid or second-level subdirectories that will not exist directly within the directory /var/spool/squid3/.