Lpi LPIC-2 - Exam 202 (part 2 of 2), version 4.5 - 202-450 Exam Practice Test
In order to export /usr and /bin via NFSv4, /exports was created and contains working bind mounts to /usr and
/bin. The following lines are added to /etc/exports on the NFC server:
After running
Explanation
mount-tnfsv4 server://mnt
of an NFC-Client, it is observed that /mnt contains the content of the server's /usr directory instead of the content of the NFSv4 foot folder.
Which option in /etc/exports has to be changed or removed in order to make the NFSv4 root folder appear when mounting the highest level of the server? (Specify ONLY the option name without any values or parameters.)
/bin. The following lines are added to /etc/exports on the NFC server:
After running
Explanation
mount-tnfsv4 server://mnt
of an NFC-Client, it is observed that /mnt contains the content of the server's /usr directory instead of the content of the NFSv4 foot folder.
Which option in /etc/exports has to be changed or removed in order to make the NFSv4 root folder appear when mounting the highest level of the server? (Specify ONLY the option name without any values or parameters.)
Correct Answer:
fsid
The fsid option in /etc/exports is used to specify a unique identifier for each exported filesystem.
For NFSv4, there is a distinguished filesystem which is the root of all exported filesystems, and it is specified with fsid=root or fsid=0, both of which mean the same thing. If this option is used for the /exports directory, then it will be the root of the NFSv4 hierarchy, and any subdirectories under it will be mounted relative to it. This means that when mounting the highest level of the server, the client will see the content of /exports instead of the NFSv4 root folder. To avoid this, the fsid option should be removed or changed to a different value for the /exports directory, so that it is not the NFSv4 root. The other options in /etc/exports are not relevant for this question.
The fsid option in /etc/exports is used to specify a unique identifier for each exported filesystem.
For NFSv4, there is a distinguished filesystem which is the root of all exported filesystems, and it is specified with fsid=root or fsid=0, both of which mean the same thing. If this option is used for the /exports directory, then it will be the root of the NFSv4 hierarchy, and any subdirectories under it will be mounted relative to it. This means that when mounting the highest level of the server, the client will see the content of /exports instead of the NFSv4 root folder. To avoid this, the fsid option should be removed or changed to a different value for the /exports directory, so that it is not the NFSv4 root. The other options in /etc/exports are not relevant for this question.
To which destination will a route appear in the Linux routing table after activating IPv6 on a router's network interface, even when no global IPv6 addresses have been assigned to the interface?
Correct Answer: C
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When the default policy for the netfilter INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?
Correct Answer: E
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Which directive in a Nginx server configuration block defines the TCP ports on which the virtual host will be available, and which protocols it will use? (Specify ONLY the option name without any values.)
Correct Answer:
listen
Explanation:
The listen directive in a Nginx server configuration block defines the TCP ports on which the virtual host will be available, and which protocols it will use. The listen directive takes one or more parameters, such as the port number, the IP address, and the protocol name. For example, the following directive tells Nginx to listen for HTTP requests on port 80 on all network interfaces:
listen 80;
The following directive tells Nginx to listen for HTTPS requests on port 443 on the 192.0.2.1 IP address:
listen 192.0.2.1:443 ssl;
The following directive tells Nginx to listen for both TCP and UDP traffic on port 53 on the 192.0.2.2 IP address:
listen 192.0.2.2:53 udp tcp;
The listen directive can also take some options, such as default_server, which specifies that the server block should act as the default server for the given port, or backlog, which sets the maximum number of pending connections for the socket.
References:
Server Block Examples | NGINX
NGINX Docs | Configuring HTTP Servers
Which directive in a Nginx server configuration block defines the TCP ports on which the virtual host will be available, and which protocols it will use?
Explanation:
The listen directive in a Nginx server configuration block defines the TCP ports on which the virtual host will be available, and which protocols it will use. The listen directive takes one or more parameters, such as the port number, the IP address, and the protocol name. For example, the following directive tells Nginx to listen for HTTP requests on port 80 on all network interfaces:
listen 80;
The following directive tells Nginx to listen for HTTPS requests on port 443 on the 192.0.2.1 IP address:
listen 192.0.2.1:443 ssl;
The following directive tells Nginx to listen for both TCP and UDP traffic on port 53 on the 192.0.2.2 IP address:
listen 192.0.2.2:53 udp tcp;
The listen directive can also take some options, such as default_server, which specifies that the server block should act as the default server for the given port, or backlog, which sets the maximum number of pending connections for the socket.
References:
Server Block Examples | NGINX
NGINX Docs | Configuring HTTP Servers
Which directive in a Nginx server configuration block defines the TCP ports on which the virtual host will be available, and which protocols it will use?
Which of the following actions are available in Sieve core filters? (Choose three.)
Correct Answer: A,C,D
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Which option in named.conf specifies which host are permitted to ask for domain name information from the server?
Correct Answer: A
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Which of these tools, without any options, provides the most information when performing DNS queries?
Correct Answer: C
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The content of which local file has to be transmitted to a remote SSH server in order to be able to log into the remote server using SSH keys?
Correct Answer: A
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