1. State one function of an application gateway.

   - Can translate from one format to another. Eg. an email gateway
     could translate Internet messages to SMS for mobile phones.

   - Can provide security services - look inside packets and decide what
     policies to apply.

2. Name a device that is used to connect a LAN (eg, your home network) to the
   Internet.

   A router.

3. List three privacy concerns about social networking services.

   - Data collection
   - Data exploitation
   - Service-provider rights
   - Functionality and user interfaces


4. How does a router decide on which output line (or network interface) a
   particular packet is to be sent?

   By using its routing table.

5. Differentiate between forward and reverse proxies.

  - A forward proxy acts on behalf of (generally internal) clients with
    respect to the outside world. Client/proxy/outside-world

  - A reverse proxy acts as a proxy to a number of servers. The outside
    world interacts with the proxy. Outside-world/proxy/servers.

6. Why is a person's location, sometimes, for some people, a particularly
   sensitive piece of information?

   Location tracking - by marketing corporations, persons wanting to do
   harm, social control. Privacy issues.

7. List three kinds of Threats to the Security of personal data stored
   on a computing device.

   - Physical intrusion
   - Social engineering
   - Masquerade
   - Abuse of privilege
   - Electronic intrusion

8. When you finish a Risk Assessment, what do you know that you may not
   have known before you did it?

   The extent to which expenditure on safeguards is warranted in order
   to provide an appropriate level of protection against the identified
   threats.