People usually do that because they can't afford a gpu or because they don't know anything about a gpu.
The correct answer is that WWW. is universal, meaning that any and all url addresses start and have www.
My reasoning is that if you were to look up, lets say google, do :
www.(google).com ( remove parentheses )
then
google.com
You come up with the same results THUS YOUR CORRECT ANSWER IS YES! ALL URL ADDRESS HAVE AND CONTAIN WWW.!!!
Watchdog Program
This program becomes the number one security mechanism for file access.
Pros:
- A benefit of using watchdog program is that you have a centralized mechanism for controlling access to a file
- You are assured of having secure access to your file
Cons:
- It becomes a bottleneck.
- If this program has a security hole, there are no other guaranteed backup mechanisms for file protection.
COPS
COPS is a collection of a dozen programs that attempt to tackle problems in UNIX security. It checks for a number things like poor passwords, device permissions, files run in /etc/rc*, existence of root SUID, and many other things.
Pros:
- This program provides methods of checking for common procedural errors.
- COPS collect outputs and either mails the information to the admin or logs it in.
Cons:
- It could be modified by an intruder or even take advantage of its features.
- It is meant to tighten the security, not a tool to be used to find security flaws. It does not directly correct errors found.
Answer:
C. Because materials developed for use in space are often useful to ordinary citizens.
Explanation:
A, is not correct due to the "only" word. Humans can explore space too.
B, not that either because you will need lots of technology to space travel, not less.
C, because materials that can be produced through scientists' ideas can help contribute to society and improve technology.
D, is not correct because there is no need for new materials for new technology.