Which of the shell command pipelines below is equivalent to the following program? int main() { file *fp, *pp; char line [100]; fopen("file1","r"); assert(fp ! = null); popen("wc -1", "w"); assert(pp ! = null); fp = pp = while (fgets( line,100, fp)! = null) fputs(line, pp) fclose(fp); pclose(pp); } assume that all of the appropriate #includes have been done fopen file1 wc -1 cat file1 t wc -1 ls -l file1 wc -1 cat file1 none of the other options is correct

What is wi-fi infrastructure? a metropolitan area network that uses radio signals to transmit and receive data a communications technology aimed at providing high-speed wireless data over metropolitan area networks a means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves includes the inner workings of a wi-fi service or utility, including the signal transmitters, towers, or poles and additional equipment required to send out a wi-fi signal