Why is it not necessary for any single machine to know every DNS name on the Internet?
What will be an ideal response?
Each computer does not need to know every DNS name on the Internet because it only needs to query one DNS server, which will resolve any DNS name by forwarding the request to other DNS servers, if necessary. Therefore, each host only needs to know the IP address of a single DNS server to which it sends its requests.
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A network administrator needs to verify a network connection. Which of the following steps should be taken? (Select two.)
a. Verify the link lights. b. Use the ping command to verify network connectivity. c. Perform an ARP request. d. Ping the MAC address.
The command find / name "*" atime 5 print
a: starts from the current directory, and finds all files with filename atime b: starts from the home directory, and finds all files last accessed less than 5 minutes ago c: starts from the root directory, and finds all files last accessed less than 5 days ago d: starts from the root directory and sends 5 files to the printer e: none of the above
Which site offers webinars and videos on a variety of skills for applications like Microsoft Word and Access?
A) How Stuff Works B) New York Times Learning Network C) Microsoft Office Training D) Webopedia
IOPS stands for
A) Input/Output operations per second B) Industrial/Office preferred system C) Internal Operating performance per second D) Input/Output power system