A dollar sign after both the letter and the number for each cell reference you want to keep the same will keep it the same when using the fill down/across function.
Answer:
Firewalls
Explanation:
A firewall is simply a network security system whose main duty is. to prevent unwanted access to. private network.
Firewalls is measures to protect your computer against threats from human actions.
It is also the one singular thing that prevents you from accessing the file on your friends system.
Answer:
The answers are: it is used to enable fast DNS queries and It can help reduce the amount of network traffic generated by DNS servers.
Explanation:
Because a DNS server can resolve a query from tis local data sends a recursive qyery to a root server.
Windows OS and Mac OS are examples of single user, multi tasking Operating Systems.
D iTunes hope this helps!
