1. Give an example of a URI.

   Both URLs (Uniform Resource Locator) and URNs (Uniform Resource Name)
   are a type of URI (Uniform Resource Identifier). You can give an
   example of either one of the above, as an example of a URI.

   http://cs.anu.edu.au/student/comp2410/ - URL
   urn:ietf:rfc:2648 - URN. The IETFs RFC 2648, the RFC for URN Namespaces.


2. State one advantage of Software as a Service, with respect to cloud
   computing.

   - Pay a monthly or annual fee, or per use. Cheaper than buying it outright.
   - Automatic updates of the software.
   - All users use the same version of software. Compatibility.
   - Can be accessed from anywhere and from different devices.

3. Give the full names of two protocols in the application layer of the TCP/IP
   reference model.

   Hyper Text Transfer Protocol (HTTP)
   Domain Name System (DNS)
   Simple Mail Transfer Protocol (SMTP)

4. State one issue for businesses that allow employees to bring their own
   devices to work (BYOD).

   - Diverse operating systems, many versions of each. Hard to keep track of
     security vulnerabilities in each.

   - Loss of confidential data resulting from the loss of the device.


5. What is the first thing that a name server does when it seeks to find the
   IP address for a given domain name?

   Look up its cache for the information.


6. UDP is a                protocol.
            --------------

   connection-oriented   connectionless
                         --------------

7. What is the domain name of the host with the IP address 150.203.208.73.?

   Use the 'host' or 'dig -x' command to get the answer.

   goolma.cecs.anu.edu.au.


8. What is the domain name of an authoritative name server for www.gmail.com?

   Use the 'dig' command. Look up the 'Authority Section'. The 'Additional
   Section' will give you their IP addresses.

   ns1.google.com.
   ns2.google.com.
   ns3.google.com.
   ns4.google.com.