A user's smartphone is experiencing limited bandwidth when at home. The user reports to a technician that the device functions properly when at work or in the car. Which of the following troubleshooting steps should the technician take NEXT?

A SOHO user reports desktop applications are performing slowly, and no emails have been received all morning. A technician remotes in and determines Internet pages load slowly or not at all, CPU performance is normal, and the local router can successfully ping. The remote connection drops periodically.
Which of the following steps should the technician take NEXT to resolve the problem?

A user is working with the command line interface on a Linux computer.
To show the contents of the current directory, which of the following commands should be used?

A team needs to deploy a temporary server room at a site to provide support during construction.
Which of the following should they use at this site while setting up the server room?

Which of the following identifies changes in the environment, such as alternating current failure?