IPv6 Flashcards by vadim craevschi

Which of the following developed IPv6?

A) The Internet Engineering Task Force (IETF)

B) The Institute of Electrical and Electronics Engineers (IEEE)

C) Massachusetts Institute of Technology (MIT)

Answer: A) The Internet Engineering Task Force (IETF)

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IPv4 is ____ long.

A) 16 bits

B) 32 bits

C) 4 bits

D) 8 bits

Answer: B) 32 bits

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In contrast to IPv4, IPv6 uses ____ times more bits to address a device on the Internet.

A) 2

B) 8

C) 4

D) 6

Answer: C) 4

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IPv6 header is ____ as bigger than IPv4.

A) 2

B) 8

C) 4

D) 6

Answer: A) 2

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IPv6 supports which auto-configuration mode of its host devices?

A) Stateful mode

B) Stateless mode

C) Both

Answer: C) Both

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Which of the following is the correct representation of the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B?

A) fd15:0db8:0000:0000:700:3:400F:527B

B) fd15:0db8::7:3:4F:527B

C) fd15::db8::700:3:400F:527B

D) fd15:db8::700:3:400F:572B

Answer: D) fd15:db8::700:3:400F:572B

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Which statements about IPv6 prefixes are true?

A) FEC0::/10 is used for IPv6 broadcast.

B) FC00::/7 is used in private networks.

C) FE80::/8 is used for link-local unicast.

D) FF00::/8 is used for IPv6 multicast.

Answer: B) FC00::/7 is used in private networks. C) FE80::/8 is used for link-local unicast. D) FF00::/8 is used for IPv6 multicast.

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Which command can you enter to verify that a 128-bit address is live and responding?

A) traceroute

B) telnet

C) ping

D) ping ipv6

Answer: D) ping ipv6

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Which technology supports the stateless assignment of IPv6 addresses?

A) DNS

B) DHCPv6

C) DHCP

D) autoconfiguration

Answer: B) DHCPv6

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Which IPv6 header field is equivalent to the TTL?

A) Hop Limit

B) Flow Label

C) TTD

D) Hop Count

Answer: A) Hop Limit

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Which two statements about the “tunnel mode ipv6ip” command are true?

A) It enables the transmission of IPv6 packets within the configured tunnel.

B) It specifies IPv4 as the encapsulation protocol.

C) It specifies IPv6 as the encapsulation protocol.

D) It specifies IPv6 as the transport protocol.

Answer: A) It enables the transmission of IPv6 packets within the configured tunnel. B) It specifies IPv4 as the encapsulation protocol.

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In which three ways is an IPv6 header simpler than an IPv4 header?

A) Unlike IPv4 headers, IPv6 headers have a fixed length.

B) IPv6 uses an extension header instead of the IPv4 Fragmentation field.

C) IPv6 headers have fewer fields.

D) IPv6 headers are more complex.

Answer: A) Unlike IPv4 headers, IPv6 headers have a fixed length. B) IPv6 uses an extension header instead of the IPv4 Fragmentation field. C) IPv6 headers have fewer fields.

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What is one requirement for interfaces to run IPv6?

A) An IPv6 address must be configured on the interface.

B) An IPv4 address must be configured.

C) Stateless autoconfiguration must be enabled after enabling IPv6 on the interface.

D) IPv6 must be enabled with the ipv6 enable command in global configuration mode.

Answer: A) An IPv6 address must be configured on the interface.

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Which entity assigns IPv6 addresses to end users?

A) ICANN

B) APNIC

C) RIR

D) ISPs

Answer: D) ISPs

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Which command enables IPv6 forwarding on a Cisco router?

A) IPv6 host

B) IPv6 unicast-routing

C) IPv6 local

D) IPv6 neighbor

Answer: B) IPv6 unicast-routing

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What is the correct command for a floating static IPv6 route?

A) ipv6 route 2001:DB8::/32 serial 2/0 201

B) ipv6 route 2001:DB8::/32 serial 2/0 1

C) ?

D) ?

Answer: A) ipv6 route 2001:DB8::/32 serial 2/0 201

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What are types of IPv6 static routes?

A) Recursive routes

B) Directly connected routes

C) Fully specified routes

D) Advertised routes

E) Virtual links

F) Redistributed routes

Answer: A) Recursive routes. B) Directly connected routes. C) Fully specified routes.

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What are three parts of an IPv6 global unicast address?

A) An interface ID that is used to identify the local host on the network.

B) An interface ID that is used to identify the local network for a particular host.

C) A subnet ID that is used to identify networks inside of the local enterprise site.

D) A global routing prefix that is used to identify the network portion

✅ A) An interface ID that is used to identify the local host on the network.
✅ C) A subnet ID that is used to identify networks inside of the local enterprise site.
✅ D) A global routing prefix that is used to identify the network portion.

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What is the purpose of the IPv6 Flow Label field?
A) To identify the source of the packet

B) To prioritize the packet

C) To label packets belonging to the same flow

D) To determine the destination address

Answer: C) To label packets belonging to the same flow

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Which IPv6 address type is used for one-to-many communication and is often employed for streaming media?
A) Unicast

B) Multicast

C) Anycast

D) Broadcast

Answer: B) Multicast

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Which command is used to enable IPv6 routing on a Cisco router?
A) ipv6 enable

B) ipv6 unicast-routing

C) ipv6 routing

D) ipv6 enable-routing

Answer: B) ipv6 unicast-routing

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Which IPv6 address type is used for communication between nodes on the same link and is not routable beyond that link?
A) Global Unicast Address

B) Link-Local Address

C) Unique Local Address

D) Multicast Address

Answer: B) Link-Local Addres

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What is the prefix for IPv6 Unique Local Addresses (ULAs)?
A) 2000::/3

B) FC00::/7

C) FE80::/10

D) FF00::/8

Answer: B) FC00::/7

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Which IPv6 address type is used to send a packet to multiple interfaces, but only to the nearest one?
A) Unicast

B) Multicast

C) Anycast

D) Broadcast

Answer: C) Anycast

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Which of the following is a valid IPv6 address? A) 2001:0db8:85a3:0000:0000:8a2e:0370:7334 B) 192.168.1.1 C) 10.0.0.1 D) 255.255.255.255

Answer: A) 2001:0db8:85a3:0000:0000:8a2e:0370:7334

Which command is used to verify the IPv6 address configuration on a Cisco router? A) show ipv6 interface B) show ipv6 address C) show ipv6 config D) show ipv6 interfaces brief

Answer: D) show ipv6 interfaces brief

Which IPv6 address type is used for communication within a local network and is not routable on the global Internet? A) Global Unicast Address B) Link-Local Address C) Unique Local Address D) Multicast Address

Answer: C) Unique Local Address

Which of the following is a valid IPv6 address abbreviation? A) 2001:0db8::85a3:0000:0000:8a2e:0370:7334 B) 2001:0db8:0000:0000:0000:8a2e:0370:7334 C) 2001:db8:85a3::8a2e:370:7334 D) 2001:db8:85a3:0000:0000:8a2e:0370:7334

Answer: C) 2001:db8:85a3::8a2e:370:7334

Which IPv6 address type is used to send a packet to all nodes on a local link? A) Global Unicast Address B) Link-Local Address C) Unique Local Address D) Multicast Address

Answer: B) Link-Local Address

Which of the following is a valid IPv6 address format? A) 2001:0db8:0000:0000:0000:8a2e:0370:7334 B) 192.168.1.1 C) 10.0.0.1 D) 255.255.255.255

Answer: A) 2001:0db8:0000:0000:0000:8a2e:0370:7334

Which of the following is the correct IPv6 address format? A) 2001:0db8:85a3:0000:0000:8a2e:0370:7334 B) 192.168.1.1 C) 10.0.0.1 D) 255.255.255.255 Answer: A) 2001:0db8:85a3:0000:0000:8a2e:0370:7334

Answer: A) 2001:0db8:85a3:0000:0000:8a2e:0370:7334

What is the prefix for IPv6 Unique Local Addresses (ULAs)? A) 2000::/3 B) FC00::/7 C) FE80::/10 D) FF00::/8

Answer: B) FC00::/7

Which command is used to enable IPv6 routing on a Cisco router? A) ipv6 enable B) ipv6 unicast-routing C) ipv6 routing D) ipv6 route

Answer: B) ipv6 unicast-routing

Which IPv6 address type is used for communication between nodes on the same link and is not routable beyond that link? A) Global Unicast Address B) Link-Local Address C) Unique Local Address D) Multicast Address

Answer: B) Link-Local Address

What is the correct command to assign an IPv6 address to an interface on a Cisco router? A) ipv6 address 2001:db8::1/64 B) ipv6 address 2001:db8::1 C) ipv6 address 2001:db8::1/128 D) ipv6 address 2001:db8::1/32

Answer: A) ipv6 address 2001:db8::1/64

What is the prefix for IPv6 multicast addresses? A) 2000::/3 B) FC00::/7 C) FE80::/10 D) FF00::/8

Answer: D) FF00::/8

Which IPv6 address type is used to send a packet to all nodes on a local link? A) Global Unicast Address B) Link-Local Address C) Unique Local Address D) Multicast Address

Answer: B) Link-Local Address

Which command is used to verify the IPv6 address configuration on a Cisco router? A) show ipv6 interface B) show ipv6 address C) show ipv6 config D) show ipv6 interfaces brief

Answer: D) show ipv6 interfaces brief

Which IPv6 address type is used for one-to-many communication and is often employed for streaming media? A) Unicast B) Multicast C) Anycast D) Broadcast

Answer: B) Multicast

Which command is used to enable IPv6 on a Cisco router interface? A) ipv6 enable B) ipv6 unicast-routing C) ipv6 address D) ipv6 router

Answer: A) ipv6 enable

Which IPv6 address type is used to send a packet to multiple interfaces, but only to the nearest one? A) Unicast B) Multicast C) Anycast D) Broadcast

Answer: C) Anycast

What is the purpose of the IPv6 Flow Label field? A) To identify the source of the packet B) To prioritize the packet C) To label packets belonging to the same flow D) To determine the destination address

Answer: C) To label packets belonging to the same flow

Which command is used to configure a floating static IPv6 route? A) ipv6 route 2001:db8::/64 serial 2/0 100 B) ipv6 route 2001:db8::/64 serial 2/0 1 C) ipv6 route 2001:db8::/64 serial 2/0 10 D) ipv6 route 2001:db8::/64 serial 2/0 200

Answer: A) ipv6 route 2001:db8::/64 serial 2/0 100

Answer: C) Unique Local Address

Which command is used to verify the IPv6 routing table on a Cisco router? A) show ipv6 route B) show ipv6 routing C) show ipv6 routes D) show ipv6 routing-table

Answer: A) show ipv6 route

Answer: B) Link-Local Address

What is the prefix for IPv6 Unique Local Addresses (ULAs)? A) 2000::/3 B) FC00::/7 C) FE80::/10 D) FF00::/8

Answer: B) FC00::/7

Which command is used to enable IPv6 routing on a Cisco router? A) ipv6 enable B) ipv6 unicast-routing C) ipv6 routing D) ipv6 route

Answer: B) ipv6 unicast-routing

Answer: B) Link-Local Address

Which command is used to enable IPv6 routing on a Cisco router? A) ipv6 enable B) ipv6 unicast-routing C) ipv6 routing D) ipv6 route

Answer: B) ipv6 unicast-routing

Answer: B) Link-Local Address

What is the prefix for IPv6 Unique Local Addresses (ULAs)? A) 2000::/3 B) FC00::/7 C) FE80::/10 D) FF00::/8

Answer: B) FC00::/7

Which command is used to verify the IPv6 address configuration on a Cisco router? A) show ipv6 interface B) show ipv6 address C) show ipv6 config D) show ipv6 interfaces brief

Answer: D) show ipv6 interfaces brief

Which IPv6 address type is used for one-to-many communication and is often employed for streaming media? A) Unicast B) Multicast C) Anycast D) Broadcast

Answer: B) Multicast

Which command is used to enable IPv6 on a Cisco router interface? A) ipv6 enable B) ipv6 unicast-routing C) ipv6 address D) ipv6 router

Answer: A) ipv6 enable

Which IPv6 address type is used to send a packet to multiple interfaces, but only to the nearest one? A) Unicast B) Multicast C) Anycast D) Broadcast

Answer: C) Anycast

Answer: C) To label packets belonging to the same flow

Which command is used to configure a floating static IPv6 route? A) ipv6 route 2001:db8::/32 serial 2/0 100 B) ipv6 route 2001:db8::/32 serial 2/0 1 C) ipv6 route 2001:db8::/32 serial 2/0 10 D) ipv6 route 2001:db8::/32 serial 2/0 200

Answer: A) ipv6 route 2001:db8::/32 serial 2/0 100

Answer: C) Unique Local Address

Which command is used to verify the IPv6 routing table on a Cisco router? A) show ipv6 route B) show ipv6 routing C) show ipv6 routes D) show ipv6 routing-table

Answer: A) show ipv6 route

Answer: B) Link-Local Address

What is the prefix for IPv6 Unique Local Addresses (ULAs)? A) 2000::/3 B) FC00::/7 C) FE80::/10 D) FF00::/8

Answer: B) FC00::/7

Which command is used to enable IPv6 routing on a Cisco router? A) ipv6 enable B) ipv6 unicast-routing C) ipv6 routing D) ipv6 route

Answer: B) ipv6 unicast-routing

Answer: B) Link-Local Address

Answer: A) ipv6 address 2001:db8::1/64

Which IPv6 address type is used to send a packet to all nodes on a local link? A) Global Unicast Address B) Link-Local Address C) Unique Local Address D) Multicast Address

Answer: B) Link-Local Address

Which of the following is a valid IPv6 address format? A) 2001:0db8:0000:0000:0000:8a2e:0370:7334 B) 192.168.1.1 C) 10.0.0.1 D) 255.255.255.255

Answer: A) 2001:0db8:0000:0000:0000:8a2e:0370:7334

Which command is used to verify the IPv6 address configuration on a Cisco router? A) show ipv6 interface B) show ipv6 address C) show ipv6 config D) show ipv6 interfaces brief

Answer: D) show ipv6 interfaces brief

Which IPv6 address type is used for one-to-many communication and is often employed for streaming media? A) Unicast B) Multicast C) Anycast D) Broadcast

Answer: B) Multicast

Which IPv6 header field replaces the IPv4 TTL (Time To Live)? A) Next Header B) Flow Label C) Hop Limit D) Traffic Class

Answer: C) Hop Limit

Which IPv6 address is used by routers for routing advertisements on a local link? A) FF02::1 B) FF02::2 C) FF02::9 D) FF02::5

Answer: B) FF02::2

What does SLAAC stand for in IPv6? A) Stateless Local Address Allocation Configuration B) Stateless Address Autoconfiguration C) Static Local Automatic Address Configuration D) Stateful Link-Address Configuration

Answer: B) Stateless Address Autoconfiguration

What is the typical prefix length of an IPv6 subnet? A) /8 B) /24 C) /64 D) /128

Answer: C) /64

Which command displays IPv6 neighbor cache? A) show ipv6 neighbors B) show ipv6 nd C) show ipv6 neighbor D) show ipv6 cache

Answer: C) show ipv6 neighbor

What type of IPv6 address is ::1? A) Anycast B) Loopback C) Multicast D) Link-local

Answer: B) Loopback

Which IPv6 feature allows devices to discover routers automatically? A) DHCPv6 B) NDP C) SLAAC D) DNS

Answer: B) NDP

Which IPv6 transition method uses tunneling IPv6 packets inside IPv4? A) NAT64 B) Dual Stack C) 6to4 D) SLAAC

Answer: C) 6to4

What address does FE80::1 most likely represent? A) A unique local address B) A loopback address C) A multicast address D) A link-local router address

Answer: D) A link-local router address

Which field in IPv6 identifies the transport layer protocol? A) Hop Limit B) Flow Label C) Traffic Class D) Next Header

Answer: D) Next Header

What is the purpose of the ICMPv6 Neighbor Solicitation message? A) To request routing information B) To discover default gateway C) To resolve the MAC address of a neighbor D) To check packet integrity

Answer: C) To resolve the MAC address of a neighbor

Which protocol replaces ARP in IPv6? A) DNS B) ICMPv6 C) DHCPv6 D) RIPng

Answer: B) ICMPv6

Which message is sent by a router to announce its presence in IPv6? A) Router Solicitation B) Router Advertisement C) Neighbor Solicitation D) Echo Request

Answer: B) Router Advertisement

Which protocol allows IPv6 hosts to obtain IP configuration dynamically without a DHCP server? A) DNS B) SLAAC C) NAT64 D) EUI-64

Answer: B) SLAAC

What does EUI-64 use to create the host portion of an IPv6 address? A) The hostname B) A MAC address C) An IPv4 address D) A DNS entry

Answer: B) A MAC address

What is the correct abbreviation for the address 2001:0db8:0000:0000:0000:ff00:0042:8329? A) 2001:db8::ff00:42:8329 B) 2001::db8::ff00:42:8329 C) 2001:db8:0:0:0:ff00:42:8329 D) 2001:0db8::ff00:42:8329

Answer: A) 2001:db8::ff00:42:8329

Which address scope does FF02::1 belong to? A) Site-local multicast B) Global multicast C) Link-local multicast D) Anycast

Answer: C) Link-local multicast

Which command assigns an IPv6 address using EUI-64? A) ipv6 address auto B) ipv6 address eui-64 C) ipv6 address dhcp D) ipv6 address slaac

Answer: B) ipv6 address eui-64

What does the double colon (::) represent in an IPv6 address? A) Default route B) Loopback address C) Consecutive zero segments D) Gateway IP

Answer: C) Consecutive zero segments

What does the prefix /128 represent in an IPv6 address? A) A default gateway B) A single host address C) A subnet D) A multicast group

Answer: B) A single host address

What is the IPv6 equivalent of the IPv4 private address range 192.168.0.0/16? A) FE80::/10 B) FC00::/7 C) FF00::/8 D) 2000::/3

Answer: B) FC00::/7

Which IPv6 feature simplifies routing by summarizing many addresses into one? A) Anycast B) Aggregation C) SLAAC D) Unicast

Answer: B) Aggregation

Which of the following is not allowed in an IPv6 address? A) Multiple "::" B) Leading zeros in a segment C) Uppercase letters A-F D) 8 groups of 4 hex digits

Answer: A) Multiple "::"

Which command enables DHCPv6 client on a router interface? A) ipv6 address dhcp B) ipv6 enable dhcp C) ipv6 dhcp client D) ipv6 address autoconfig

Answer: A) ipv6 address dhcp

Which protocol helps IPv6 hosts discover routers and neighbors on the local network? A) DHCPv6 B) NDP C) OSPFv3 D) RIPng

Answer: B) NDP

What is the multicast address for all routers on the local link? A) FF02::1 B) FF02::2 C) FF02::5 D) FF01::1

Answer: B) FF02::2

How many bits are in an IPv6 address? A) 64 B) 128 C) 256 D) 32

Answer: B) 128

What is the purpose of ICMPv6 Router Solicitation messages? A) To announce a router B) To respond to a ping C) To request router information D) To create a tunnel

Answer: C) To request router information

Which IPv6 transition technique allows simultaneous IPv4 and IPv6 on interfaces? A) 6to4 B) NAT64 C) Dual Stack D) ISATAP

Answer: C) Dual Stack

Which command shows IPv6 interface brief output on Cisco? A) show ip interface brief B) show ipv6 brief C) show ipv6 interface brief D) show interface ipv6 brief

Answer: C) show ipv6 interface brief

Which IPv6 feature is equivalent to NAT in IPv4? A) Anycast B) SLAAC C) NPTv6 D) EUI-64

Answer: C) NPTv6

Which IPv6 address type is intended to identify multiple interfaces but deliver packets to only one? A) Unicast B) Multicast C) Anycast D) Broadcast

Answer: C) Anycast

What is the main purpose of the IPv6 Next Header field? A) Marks packet priority B) Defines encryption level C) Indicates the transport layer protocol D) Shows the number of hops

Answer: C) Indicates the transport layer protocol

Which tool allows you to test reachability of an IPv6 address on a Cisco device? A) ping B) traceroute C) ping ipv6 D) ping6

Answer: A) ping

What is the result of using :: in an IPv6 address? A) Compresses anycast addresses B) Expands the prefix length C) Replaces one or more groups of consecutive 0s D) Indicates default gateway

Answer: C) Replaces one or more groups of consecutive 0s

What is the scope of address FF05::1:3? A) Global B) Link-local C) Site-local D) Interface-local

Answer: C) Site-local

Which command displays a router's current IPv6 routing table? A) show ip route B) show ipv6 routes C) show ipv6 route D) show ipv6 forwarding

Answer: C) show ipv6 route

Which ICMPv6 message type is used for duplicate address detection? A) Router Advertisement B) Neighbor Solicitation C) Echo Request D) Redirect

Answer: B) Neighbor Solicitation

What does the FF00::/8 range indicate in IPv6? A) Unique Local B) Link-Local C) Multicast D) Reserved

Answer: C) Multicast

Which statement about IPv6 multicast is true? A) It replaces IPv4 unicast B) It uses broadcast domains C) It sends traffic to all nodes D) It replaces broadcast in IPv6

Answer: D) It replaces broadcast in IPv6

Which of these is a valid IPv6 default route? A) ::0/0 B) ::/0 C) 0::/0 D) 0.0.0.0/0

Answer: B) ::/0

Which IPv6 multicast address is used by OSPFv3? A) FF02::1 B) FF02::5 C) FF02::9 D) FF02::6

Answer: B) FF02::5

What is the interface identifier size in an IPv6 address using EUI-64? A) 48 bits B) 64 bits C) 32 bits D) 128 bits

Answer: B) 64 bits

Which command is used to configure an IPv6 default static route? A) ipv6 route 0.0.0.0/0 B) ipv6 route ::0/0 C) ipv6 route ::/0 D) ipv6 route 0::/0

Answer: C) ipv6 route ::/0

Which address is used by a host to communicate with itself in IPv6? A) ::1 B) :: C) FF00:: D) FE80::1

Answer: A) ::1

Which of the following is not a valid IPv6 address type? A) Unicast B) Anycast C) Broadcast D) Multicast

Answer: C) Broadcast

What is the purpose of the Traffic Class field in the IPv6 header? A) Identifies flow of packets B) Indicates packet size C) Used for QoS markings D) Identifies destination address

Answer: C) Used for QoS markings

Which part of an IPv6 address identifies the subnet? A) Host ID B) Interface ID C) Network prefix D) Flow label

Answer: C) Network prefix

How many /64 subnets can be created from a /48 IPv6 address block? A) 256 B) 1024 C) 4096 D) 65,536

Answer: D) 65,536

Which IPv6 multicast group is joined by all IPv6-enabled routers? A) FF02::1 B) FF02::2 C) FF02::5 D) FF02::6

Answer: B) FF02::2

Which protocol is used for dynamic assignment of IPv6 addresses and other configuration parameters? A) NDP B) DHCPv6 C) SLAAC D) OSPFv3

Answer: B) DHCPv6