Chapter 24 Quiz

1		The main problem that must be solved in providing mobile communication using the IP protocol is ____________.
			A)	connecting
			B)	forwarding
			C)	addressing
			D)	none of the above
2		The original IP addressing was based on the assumption that a host is ________.
			A)	stationary
			B)	mobile
			C)	moving
			D)	none of the above
3		The IP addresses are designed to work with ________ hosts because part of the address defines the network to which the host is attached.
			A)	stationary
			B)	mobile
			C)	moving
			D)	none of the above
4		A mobile host normally uses two addresses. The host has its original address, called the _______ address and a temporary address, called the _________address.
			A)	care-of; home
			B)	home; care-of
			C)	home; foreigner
			D)	none of the above
5		The home address is ______.
			A)	temporary
			B)	permanent
			C)	both a and b
			D)	none of the above
6		The care-of address is _______.
			A)	temporary
			B)	permanent
			C)	both a and b
			D)	none of the above
7		The ___________ is usually a router attached to the home network of the mobile host.
			A)	foreign agent
			B)	home agent
			C)	both a and b
			D)	none of the above
8		The _________ acts on behalf of the mobile host when a remote host sends a packet to the mobile host.
			A)	home agent
			B)	foreign agent
			C)	either a or b
			D)	none of the above
9		When the mobile host acts as a foreign agent, the care-of address is called a _______ care-of address.
			A)	common
			B)	shared
			C)	co-located
			D)	none of the above
10		To communicate with a remote host, a mobile host goes through ________ phases.
			A)	three
			B)	two
			C)	four
			D)	none of the above
11		The first phase in mobile communication is called _________.
			A)	registration
			B)	agent discovery
			C)	data transfer
			D)	none of the above
12		The second phase in mobile communication is called _________.
			A)	registration
			B)	agent discovery
			C)	data transfer
			D)	none of the above
13		The third phase in mobile communication is called _________.
			A)	registration
			B)	agent discovery
			C)	data transfer
			D)	none of the above
14		Mobile IP uses the router advertisement packet of _______ and appends an agent advertisement message.
			A)	IGMP
			B)	IP
			C)	ICMP
			D)	none of the above
15		A registration request or reply is sent by ________ using the well-known port 434.
			A)	TCP
			B)	IP
			C)	UDP
			D)	none of the above
16		_________ occurs when a remote host communicates with a mobile host that has moved to the same network (or site) as the remote host.
			A)	Triple crossing
			B)	Double crossing
			C)	Triangle routing
			D)	none of the above
17		_______ occurs when the remote host communicates with a mobile host that is not attached to the same network (or site) as the mobile host.
			A)	Triple crossing
			B)	Double crossing
			C)	Triangle routing
			D)	none of the above
18		In the _______ phase, a mobile host must learn the address of its home agent.
			A)	agent discovery
			B)	registration
			C)	data transfer
			D)	none of the above
19		In the _______ phase, a mobile host must learn the address of its foreign agent.
			A)	agent discovery
			B)	registration
			C)	data transfer
			D)	none of the above
20		If a router acts as an agent, it advertises its presence in a network by appending an agent _______ message to an ICMP router advertisement.
			A)	solicitation
			B)	advertisement
			C)	discovery
			D)	none of the above
21		A mobile host can send an agent _______ message if it has not received any agent advertisements.
			A)	solicitation
			B)	discovery
			C)	registration
			D)	none of the above
22		When a mobile host wants to register with its foreign agent, it sends _______ message.
			A)	an agent solicitation
			B)	an agent advertisement
			C)	a registration request
			D)	none of the above
23		The registration reply is sent by the _______ agent to the foreign agent.
			A)	home
			B)	care-of
			C)	discovery
			D)	none of the above
24		The _______ uses a registry table to find the care-of address of the mobile host.
			A)	home agent
			B)	foreign agent
			C)	remote host
			D)	none of the above