Using computers in the Lab or your own PC/laptop carry out the following exercises. To begin: -Click the Windows Start button. - Type cmd in the search box. - A window should appear. This is the Command Line Interface (CLI) prompt window. 1. Which one command can be used to answer the questions below (a-d).

2. Carry out a Ping Test. Provide a screenshot to support your answer. (2 Marks) In the Command box type ping /? and hit the key a) What are some of the options available for the ping command. State four and explain what they do.

3. Type the command ping 127.0.0.1 and press the key. (2 Marks)

a) Explain the purpose of the IP address 127.0.0.1.

b) If the ping to IP address 127.0.0.1 is successful what does this imply?

c) What does it mean if the IP address 127.0.0.1 does not ping?

4. Ping the IP address of your local computer (Question 1a).

Explain what happened and provide a screenshot. (1 Mark)

5. Explain how you could find the DNS server for Cambridge University; www.cam.ac.uk. Provide a screenshot to support your answer. (2 Marks)