202-450 Exam Dumps : LPIC-2 - Exam 202 (part 2 of 2), version 4.5

 The host allow option in the smb.conf file specifies the hosts or networks that are allowed to access the Samba server. The hosts can be specified by name, IP address, or network address with a netmask. The host allow option can also include the special name localhost, which refers to the local machine. The host allow option can be overridden by the host deny option, which specifies the hosts or networks that are denied access to the Samba server. The host deny option has a higher priority than the host allow option.

In this question, the host allow option is set to 192.168.1.100 192.168.2.0/24 localhost, which means that only the host with the IP address 192.168.1.100, the hosts on the network 192.168.2.0/24 (from 192.168.2.1 to 192.168.2.254), and the local machine can access the Samba server. This explains why a wireless laptop with an IP address 192.168.2.93 can access the Samba server, but a workstation on the wired network with an IP address 192.168.1.177 cannot. Almost every machine on the wired network is unable to access the Samba server because they are not included in the host allow option.

To fix this problem, the host allow option should be changed to include the entire wired network, which is assumed to be 192.168.1.0/24 (from 192.168.1.1 to 192.168.1.254). This can be done by using the network address and the netmask, or by using a range of IP addresses. The host allow option should also keep the wireless network and the localhost in the list, so that the existing access is not denied. Therefore, the correct answer is E. host allow = 192.168.1.0/255.255.255.0 192.168.2.0/255.255.255.0 localhost. This will allow any host on either network, or the local machine, to access the Samba server, without denying access to anyone else.

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 doveadm who sub-command shows information about the currently connected users and their sessions. The output includes the following columns:

• user: The username of the connected user.
• ip: The IP address of the client.
• port: The port number of the client.
• service: The name of the Dovecot service, such as imap, pop3, lmtp, etc.
• protocol: The protocol version used by the client, such as IMAP4rev1, POP3, etc.
• pid: The process ID of the Dovecot process that handles the connection.
• type: The type of the connection, such as tcp, ssl, etc.
• state: The state of the connection, such as running, idle, etc.
• since: The time when the connection was established.

References:

• doveadm-who - Dovecot Wiki
• LPIC-2 exam 202 objectives, topic 211.3, “Managing Mailbox Access”