A network technician is reviewing the following output from a router:

Which of the following is this an example of?

A request is made to open an additional port on a firewall. The request is approved, and the port is opened. Which of the following BEST describes this process?

A company has a DNS record for the following address: products companyXYZ.com. The company would like to add another record, sales.companyXYZ.com, which continually points to the same IP address as products companyXYZ.com. Which of the following DNS record would BEST accomplish this?

After setting up In a temporary office, Joe tries to access the company's wireless network.
Following several attempts, Joe is able to get an IP, but cannot access network resources. Which of the following is the MOST likely cause of this error when trying to connect to the compan/s wireless network?

A security manager asks the network administrator to block VoIP protocols using the default ports on the corporate firewall. Which of the following ports should be blocked to prevent this type of traffic from going outside the company's network? (Choose three.)