5900 ch 13

Which of the following IPv6 addresses are equivalent to ACCB:0876:0000:0000:FD87:0000:0000:0064? (select two) A. ACCB:876::FD87:0:0:64 B. ACCB:876::FD87::64 C ACCB:876:0:0:FD87::64 D. ACCB:876:0:FD87:0:64

A and C. Both A and C properly use the double-colon address compression to indicate consecutive groups of zeroes. B improperly uses this shorthand by using it twice. D illegally combines consecutive groups of zeroes.

What type of address applies to a single unique network node? A. Unicast B. Unilateral C. Multicast D. Omnicast

A. A unicast address applies to a single unique network node.

What is true of current global unicast addresses? A. They always begin with 2001::,2002::,2003::, and so on B. They always begin with FF02::1, FF02::2, FF03::, and so on C. They are only 64 bits long D. They are only used by root and tier one routers

A. Global unicast addresses begin with 2001::, 2002::, 2003::, and so on.

What is a valid IPv6 prefix length? A. /64 B. /72 C. /255 D. 255.255.255.0

A. No subnet should ever be longer than /64, and 255.255.255.0 is an IPv4 mask.

What is the only type of IPv6 address requried to communicate with other computers on a local network? A. Link-local B. global unicast C. EUI -94 D. Multicast

A. Only a link-local address is required for non-Internet communication.

As IPv6 clients can get a portion of their IP addresses from the default gateway server, what purpose does a DHCPv6 server serve? A. DHCPv6 servers can still distribute DNS server information B. DHCPv6 servers provide link local addresses C. DHCPv6 servers provide the other half of the IPv6 addresses D. There is no such thing as a DHCPv6 server

A. Stateless DHCPv6 servers can provide optional information, such as DNS server information.

Which of the following is a valid link local address? A. 2001:2323:CCE:34FF:19:DE3:2DBA:52 B. FE80::1994:33DD:22CE:769B C. FEFE:0:0:0FEFE:0:0:0 D. FFFF:FFFF:FFFF:FFFF:232D:0:DE44:CB2

B. Link-local addresses always start with FE80::/10.

Which protocol enables 6to4 tunneling in Linux? A. GOGO B. Miredo C. Teredo D. 6to4En

B. Miredo is the open source implementation of Teredo in Linux, enabling 6to4 tunneling.

How do IPv6 multicasts differ from broadcasts? A. Broadcasts are sent to all network nodes. Multicasts are sent only to specific network nodes. B. Both broadcasts and multicasts ate sent to all network nodes, but in a multicast, only the destination nodes process the incoming packets C. Broadcasts can cross over a router, whereas multicasts cannot D. Broadcasts are used on local networks; multicasts are used on the Internet

B. While multicasts, like broadcasts, can be sent to every network node, only the target nodes actually process the multicast packets.

Which of the following is a valid IPv6 address? A. 192.168.0.1 B. 2001:376:BDS:0:3378:BAAFQR9:223 C. 2541:FDC:ACDF:2770:23 D. 0000:0000:0000:0000:0000:0000:0000:0000

C. 192.168.0.1 is an IPv4 address. 2001:376:BDS:0:3378:BAAF:QR9:223 is not valid because it contains non-hexadecimal characters (S, Q, and R). An IPv6 address may not consist of all zeroes. Only 2541:FDC::ACDF:2770:23, which uses shorthand, is valid.

What is the main benefit of IPv6 aggregation? A. It allows users to combine multiple IPv6 addresses to increase their bandwidth and overall internet speed exponentially B. It is backward compatible and can be directly applied to IPv4 networks C. It reduces the size and complexity of routing tables, allowing routers to work more efficiently D. Signals are increased with each router the packet travels through allowing or greater distances over wireless networks

C. Aggregation reduces the size and complexity of routing tables.

What is true of link local addresses? A. They are passed out by the default gateway router B. They are completely randomly generated by each computer C. All modern operating systes (post windows XP) generate the second 64 bit portion randomly D. They always start with 169.254

C. All modern operating systems (post Windows XP) generate the second 64-bit portion randomly.

A packet has been set to the address FF02:0000:0000:0002:0BCD:23DD:3456:0001 A. The single computer with the address FF02:0000:0002:0BCD:23DD:3456:0001 B. Every network node C. Every router on the network D. Nothing will read the packet because it is an invalid address

C. Every router reads packets destined for the multicast address that start with FF02::2.

What must your computer have to access the IPv6 internet? A. An IPv4 address B. A flobal multicast address C. A link local address D. A global unicast address

D. Global unicast addresses are required for IPv6 Internet access.

How many bits comprise an IPv6 address? A. 32 B. 48 C. 64 D. 128

D. IPv6 addresses contain 128 bits, written in hexadecimal notation.

A _________ address contains a total of 32 bits

Internet Protocol version 4 (IPv4)

The _____________ appends an IPv4 address to the end of the IPv6 prefix

Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)

The ___________ protocol can traverse NAT and is built into Windows

Teredo

It is the practice of _____________ that greatly reduces the size of IPv6 routing tables by reducing them to a subnet of upstream router

aggregation

You must have a ___________ to connect to the IPv6 internet

global unicast address

Computers involved in a local network that has no internet connectivity require on a ____________________

link-local address

A packet sent to a ___________ is broadcast to all network nodes, but only the target nodes process the packet

multicast address

A __________ enables two IPv6 networks to connect over an existing IPv4 infastructure

overlay tunnel

A __________ DHCPv6 server passes out only optional information

stateless

Employing the services of a _______________ automates the process of setting up an IPv6 tunnel

tunnel broker