To make sure that the communication between the UNIX system and the DNS server is functioning properly, you decide to execute a few manual resolution queries. You can use the tools nslookup and dig.
Testing various system components is part of the problem-solving process known as troubleshooting, which is used to identify problems. A piece of hardware or software, including the operating system, might undergo troubleshooting. Troubleshooting frequently necessitates consulting paperwork, how-to manuals, or manufacturer support personnel.
As the first portable operating system, Unix sets itself apart from its forerunners. Because nearly the entire operating system is written in the C programming language, Unix can run on a variety of platforms.
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