Chapter 27 Quiz

1		An IPv6 address is _________ bits long.
			A)	32
			B)	64
			C)	128
			D)	none of the above
2		In IPv6, options are inserted between the _________ and the ___________ data.
			A)	base header; extension header
			B)	base header; upper-layer data
			C)	base header; frame header
			D)	none of the above
3		IPv6 allows _________ security provisions than IPv4.
			A)	more
			B)	less
			C)	the same level
			D)	none of the above
4		An IPv6 address consists of ________ bytes (octets);
			A)	4
			B)	8
			C)	16
			D)	none of the above
5		To make addresses more readable, IPv6 specifies ____________notation.
			A)	dotted decimal
			B)	hexadecimal colon
			C)	both a and b
			D)	none of the above
6		In hexadecimal colon notation, a 128-bit address is divided into _______ sections, each _____ hexadecimal digits in length.
			A)	8: 2
			B)	8: 3
			C)	8: 4
			D)	none of the above
7		An IPv6 address can have up to __________ colons.
			A)	8
			B)	7
			C)	4
			D)	none of the above
8		An IPv6 address can have up to __________ hexadecimal digits.
			A)	16
			B)	32
			C)	8
			D)	none of the above
9		If an IPv6 address has digits of ________, we can abbreviate the address.
			A)	1s
			B)	Fs
			C)	0s
			D)	none of the above
10		In IPv6, _______ address defines a single computer.
			A)	a unicast
			B)	a multicast
			C)	an anycast
			D)	none of the above
11		In IPv6, ____ address defines a group of computers with addresses that have the same prefix.
			A)	a unicast
			B)	a multicast
			C)	an anycast
			D)	none of the above
12		_________ address defines a group of computers.
			A)	A unicast
			B)	A multicast
			C)	An anycast
			D)	none of the above
13		In IPv6, the ________ prefix defines the purpose of the address.
			A)	type
			B)	purpose
			C)	both a and b
			D)	none of the above
14		In IPv6, the___________ address is generally used by a normal host as a unicast address.
			A)	provider-based unicast
			B)	link local
			C)	site local
			D)	none of the above
15		A _________ address comprises 80 bits of zero, followed by 16 bits of one, followed by the 32-bit IPv4 address.
			A)	link local
			B)	site local
			C)	mapped
			D)	none of the above
16		A ___________ address is an address of 96 bits of zero followed by 32 bits of IPv4 address.
			A)	link local
			B)	site local
			C)	mapped
			D)	none of the above
17		A _______ address is used if a LAN uses the Internet protocols but is not connected to the Internet for security reasons.
			A)	link local
			B)	site local
			C)	mapped
			D)	none of the above
18		The ______ address is used if a site with several networks uses the Internet protocols but is not connected to the Internet for security reasons.
			A)	link local
			B)	site local
			C)	mapped
			D)	none of the above
19		Which of the following is a necessary part of the IPv6 datagram?
			A)	base header
			B)	data packet from the upper layer
			C)	a and b
			D)	none of the above
20		The _______ field in the base header restricts the lifetime of a datagram.
			A)	version
			B)	priority
			C)	hop limit
			D)	none of the above
21		When a datagram needs to be discarded in a congested network, the decision is based on the _______ field in the base header.
			A)	hop limit
			B)	priority
			C)	next header
			D)	none of the above
22		The _______ field in the base header and the sender IP address combine to indicate a unique path identifier for a specific flow of data.
			A)	flow label
			B)	next header
			C)	hop limit
			D)	none of the above
23		In the _______ extension header, the destination address changes from router to router.
			A)	source routing
			B)	fragmentation
			C)	authentication
			D)	payload
24		To request the physical address of a host whose IP address is known, a _______ message is sent.
			A)	membership-query
			B)	router-solicitation
			C)	neighbor-solicitation
			D)	neighbor-advertisement
25		If a host needs information about routers on the network, it sends a _______ message.
			A)	membership-report
			B)	router-solicitation
			C)	neighbor-solicitation
			D)	neighbor-advertisement
26		The ARP function in version 4 is part of _______ in version 6.
			A)	echo request and reply
			B)	router solicitation and advertisement
			C)	neighbor solicitation and advertisement
			D)	none of the above
27		The IGMP functions in version 4 are part of _______ in version 6.
			A)	echo request and reply
			B)	router solicitation and advertisement
			C)	group membership
			D)	none of the above
28		To join a group, a host sends a _______.
			A)	group-membership report
			B)	group-membership query
			C)	group-membership termination
			D)	none of the above
29		The purpose of echo request and echo reply is to _______.
			A)	report errors
			B)	check node-to-node communication
			C)	check group memberships
			D)	none of the above
30		A router sends a _______ message to the host to monitor group membership.
			A)	report
			B)	query
			C)	termination
			D)	none of the above
31		In error reporting the encapsulated ICMP packet goes to _______.
			A)	the source
			B)	the destination
			C)	a router
			D)	none of the above
32		In error reporting, a destination can send a _______ message if an option is not recognized.
			A)	parameter-problem
			B)	packet-too-big
			C)	time-exceeded
			D)	none of the above
33		An MTU field is found on the _______ error message to inform the sender about packet size.
			A)	destination-unreachable
			B)	time-exceeded
			C)	parameter-problem
			D)	none of the above
34		When the hop count field reaches zero and the destination has not been reached, a _______ error message is sent.
			A)	destination-unreachable
			B)	time-exceeded
			C)	parameter-problem
			D)	none of the above
35		When all fragments of a message have not been received within the designated amount of time, a _______ error message is sent.
			A)	destination-unreachable
			B)	time-exceeded
			C)	parameter-problem
			D)	none of the above
36		Errors in the header or option fields of an IP datagram require a _______ error message.
			A)	destination-unreachable
			B)	time-exceeded
			C)	parameter-problem
			D)	none of the above
37		If a member of a group wishes to terminate membership, it can _______ in response to a group membership query.
			A)	send a group membership report
			B)	send a group membership termination
			C)	send a group membership query
			D)	none of the above
38		In version 6, an independent protocol called _______ is eliminated.
			A)	ICMP
			B)	IP
			C)	IGMP
			D)	none of the above
39		The _______ packet contains information about a router.
			A)	router solicitation
			B)	router information
			C)	router advertisement
			D)	none of the above
40		When a host has the _______ address of a host but needs the _______ address, it uses a neighbor solicitation packet.
			A)	physical; protocol port
			B)	physical; data link layer
			C)	IP; physical
			D)	none of the above
41		A router can send a _______ message to a host to inform it of a more efficient path.
			A)	neighbor-solicitation
			B)	router-solicitation
			C)	redirection
			D)	none of the above
42		Which version 4 protocols are still viable and known by their same names in version 6?
			A)	IGMP
			B)	ARP
			C)	RARP
			D)	none of the above
43		Which error-reporting message from version 4 has been eliminated in version 6?
			A)	packet too big
			B)	destination unreachable
			C)	source quench
			D)	none of the above
44		Which error-reporting message is found in version 6 but not in version 4?
			A)	packet too big
			B)	destination unreachable
			C)	parameter problem
			D)	none of the above