1. Which of the following statements are true about Private IPv4 addresses? (Select all that apply.)

	a.	IANA doesnt manage the assignment of private IPv4 networks to organizations.
	b.	Network Address Translation creates a temporary mapping of public IPv4 addresses to private IP addresses as they are requested.
	c.	Properly configured NAT is required to access the Internet from a computer assigned the IPv4 address 172.32.17.17
	d.	The use of classless IPv4 routing, Private IP usage inside organizations, and NAT have slowed the need to migrate to IPv6.

2.

Which of the following statements are true regarding the IPsec ESP security transform? (Select all that apply.)

a.

In tunnel mode, ESP protects the inner IP header and payload.

b.

In tunnel mode, ESP can provide Data Integrity, Data-Origin Authentication, and Confidentiality.

c.

In tunnel mode, ESP protects all the fields of the outer IP header, the ESP header, the inner IP header, and the payload.

d.

ESP Tunnel mode is most often used between IPsec gateways and not the end points of the communication.

3.

Which of the following describe Secure Shell?

	a.	Is not compatible with Secure File Transfer Protocol.
	b.	Uses the DSA symmetric encryption algorithm to encrypt traffic between endpoints.
	c.	Initial authentication is in plain-text.
	d.	Can be used to remotely manage devices on remote networks.

4.

Which of the following statements are true regarding IPsec Security Associations? (Select all that apply.)

a.

Security Association attributes are negotiated between IPsec endpoints as part of the first phase of Internet Key Exchange.

b.

Two endpoints can communicate bidirectionally once they establish a Security Association.

c.

The SPI value in the ESP Header tells the receiving endpoint which SA should be used to process the received packet.

d.

The Security Parameter Index acts as a temporary key used to encrypt user traffic streams.

5.

Which of the following statements are true regarding Mobile IP? (Select all that apply.)

	a.	MIP has no organic security mechanisms built into it.
	b.	Mobility Agents track which network the Mobile user is using and create encrypted tunnels between appropriate agents to pass the Mobile Users traffic to and from the communicating node.
	c.	Mobile IP enables devices to move between networks without interrupting application sessions.
	d.	Mobile Agents use MIP signaling messages to exchange information about location of each mobile user.