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

DNSSEC adds digital signatures to DNS records, which can be verified by the clients using public keys. This way, DNSSEC ensures that the DNS responses are authentic and have not been tampered with by attackers. DNSSEC does not encrypt DNS queries or answers, nor does it authenticate the user or the nameserver123

What is DNSSEC on DNS Server in Windows Server?1

How DNSSEC Works | Cloudflare

The http_port directive in squid.conf sets the port number or numbers that Squid will use to listen for client requests. You can specify multiple socket addresses with different port numbers and options. By default, Squid listens on port 3128 on all network interfaces. You can change the port number or bind the socket to a specific IP address if needed. For example, to set the port to 8080, you can write:

http_port 8080

To configure Squid to listen only on the 192.0.2.1 IP address on port 3128, you can write:

http_port 192.0.2.1:3128

References:

• Squid proxy configuration tutorial on Linux
• squid : http_port configuration directive
• Configuring the Squid Service to Listen on a Specific Port or IP Address

 The options rw and ro are valid in /etc/exports. They specify whether the exported file system is mounted with read-write or read-only permissions by the clients. The option rw allows the clients to modify the files on the server, while the option ro prevents any changes by the clients. These options can be applied to all or specific hosts in the /etc/exports file123 References:

• LPIC-2 Overview
• LPIC-2 202-450
• 10 practical examples to export NFS shares in Linux | GoLinuxCloud