CCNP: BSI Chapter 8 Answer

1.Which statement is true about the IPv6 prefix ff00::/8?

The link-local prefix ff00::/8 specifies any addresses which are used only in software.

The link-local prefix ff00::/8 specifies all addresses which are valid on the local physical link.

XThe multicast prefix ff00::/8 is used for all multicast addresses.

The broadcast prefix ff00::/8 is used for all broadcast addresses.


2.Which IPv6 address is analogous to a private IP address using IPv4?

Xsite local

any cast

link local

NLA ID


3.Which two hexadecimal strings can be used to represent the following IPv6 address: 2031:0000:130F:0000:0000:09C0:876A:130B? (Choose two.)

X2031:0:130F:0000:0000:09C0:876A:130B

2031:0000:130F::::09C0:876A:130B

X2031:0:130F::09C0:876A:130B

2031::130F::09C0:876A:130B

2031:130F:09C0:876A:130B


4.What are the three types of IPv6 addresses? (Choose three.)

Xunicast

network

Xanycast

Xmulticast

broadcast

host


5.Which dual-stack IPv4 and IPv6 configuration statement is true?

The default MTU value must be decreased by 20 bytes to accommodate the IPv6 header.

The default MTU value must be increased by 20 bytes to accommodate the IPv6 header.

The ipv6 enable interface configuration command is required.

XThe ipv6 unicast-routing global configuration command is required.


6.What are the two most common techniques to transition from IPv4 to IPv6? (Choose two.)

encapsulated IPv4 headers

Inter-Site Algorithm Tunnel Addressing Protocol (ISATAP)

GRE tunnels

Xdual stack

XIPv6-to-IPv4 tunnels

IPng tunneling


7.What are two OSPFv3 LSAs that are not available in OSPFv2? (Choose two.)

Xlink LSAs

interarea prefix LSAs for ABRs

interarea router LSAs for ASBRs

network LSAs

Xintra-area prefix LSAs


8.Refer to the exhibit. Routers A and B are both dual-stack routers that run IPv4 and IPv6. The connection between router A and router B is IPv4 only. How will the packet be formatted as it traverses the link between router A and router B?

1. IPv4 tag 2. IPv6 header 3. IPv6 data

1. IPv6 tag 2. IPv4 header 3. IPv4 data

1. IPv4 header 2. IPv6 data 3. IPv6 header

1. IPv6 header 2. IPv6 data 3. IPv4 header

X1. IPv4 header 2. IPv6 header 3. IPv6 data

1. IPv6 header 2. IPv4 header 3. IPv4 data


9.Refer to the exhibit. Which statement is true about the command ipv6 ospf cost 20?

The Virtual Router Redundancy Protocol (VRRP) will not use this interface unless all other interfaces go down.

The cost number is used in the designated router election.

OSPFv3 will prefer this link over links with a lower cost.

The IPv6 priority must be configured before this command is entered.

XThe cost of sending a packet on this interface, expressed in the link state metric, is 20.


10.Refer to the exhibit. Which statement is true about the command ipv6 ospf priority 20?

HSRP will not use this interface unless all other interfaces go down.

GBLP will not use this interface unless all other interfaces go down.

XThe priority number is used in the designated router election.

OSPFv3 will prefer this link over links with a lower priority.

The IPv6 priority must be configured before configuring the OSPF cost.


11.Which statement is true of IPv6 and OSPFv3?

The default route is expressed as a prefix with length 64.

The default route is expressed as a prefix with length 128.

XType 3 and type 9 LSAs carry all IPv6 prefix information.

Type 2 and type 3 LSAs carry all IPv6 prefix information.


12.Which statement about OSPFv3 LSAs is true?

XRouter LSAs contain only 32-bit IDs.

Link local LSAs are flooded throughout an OSPF area.

Area LSAs are flooded throughout an OSPF autonomous system.

Intra-area prefix LSAs have link-local flooding scope.


13.Stateless autoconfiguration enables which IPv6 feature?

use of a thick-client approach

DHCP-lite

capability of devices to connect to the network by the use of DHCP servers

Xcapability of devices to connect to the network without any configuration or without the use of a DHCP server

use of a thin-client approach

capability of devices to automatically assign themselves a hybrid IPv4 / IPv6 address


14.Refer to the exhibit. Which statement is true?

The command tunnel mode ipv6ip enables NAT-Protocol Translation (NAT-PT), which is a translation mechanism that sits between an IPv6 network and an IPv4 network.

XThe tunnel mode ipv6ip command enables the manual IPv6 overlay tunnel.

This configuration is an example of an automatic 6to4 tunnel.

This configuration is an example of an Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) overlay tunnel.

This configuration uses the reserved prefix 2001::/16 to allow an IPv4 Internet-connected site to create and use a /48 IPv6 prefix based on a single globally routable/reachable IPv4 address.


15.Which three IPv6 addresses are the same but expressed in a different format? (Choose three.)

X0123:0078:0000:0000:9ABC:0000:0000:DEF0

0000.0123.0078::9ABC::DEF0

123.0078::9ABC::DEF0

X123:78:0:0:9ABC:0:0:DEF0

0123:0078:0000::9ABC:0000:0000:DEF

X123:78::9ABC:0:0:DEF0