How did the use of ARPANET change computing? Scientists were able to communicate over long distances

Scientists could use computers that had different operating systems

Computers no longer had to be wired to a main computer to communicate

Scientists were able to connect to the World Wide Web through ARPANET

Plz answer quickly

The forerunner to cell phones, pdas, and smartphones was

When you type the pwd command, you notice that your current location on the linux filesystem is the /usr/local directory. answer the following questions, assuming that your current directory is /usr/local for each question. a. which command could you use to change to the /usr directory using an absolute pathname? b. which command could you use to change to the /usr directory using a relative pathname? c. which command could you use to change to the /usr/local/share/info directory using an absolute pathname? d. which command could you use to change to the /usr/local/share/info directory using a relative pathname? e. which command could you use to change to the /etc directory using an absolute pathname? f. which command could you use to change to the /etc directory using a relative pathname?

Anetwork security application that prevents access between a private and trusted network and other untrusted networks