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IPv6 MCQs

IPv6 MCQs: This section contains multiple-choice questions and answers on the IPv6. It will help the students and professionals to test their skills and prepare well for their exams.

Here, you will find the top 45 IPv6 MCQs with answers and explanations. These IPv6 multiple-choice questions are helpful for the students and professionals who are studying/preparing for networking engineering courses/certification programs like Cisco CCNA, CCNP, CCIE, HCIA, HCIP, HCIE, etc., and also helpful for the school/college level subjects. These questions on IPv6 can be practiced, revised, and learned for these programs.

List of IPv6 MCQs

1. Which of the following developed IPv6?

  1. The Internet Engineering Task Force (IETF)
  2. The Institute of Electrical and Electronics Engineers (IEEE)
  3. Massachusetts Institute of Technology (MIT)

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

Explanation:

The Internet Engineering Task Force (IETF) created IPv6 to solve the long-anticipated issue of IPv4 address exhaustion.

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2. IPv4 is ____ long.

  1. 16 bits
  2. 32 bits
  3. 4 bits
  4. 8 bits

Answer: B) 32 bits

Explanation:

IPv4 supports about 4,294,967,296 (232) addresses and is 32 bits long.

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

  1. 2
  2. 8
  3. 4
  4. 6

Answer: C) 4

Explanation:

In contrast to IPv4, IPv6 uses 4 times more bits to address a device on the Internet.

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4. IPv6 header is ____ as bigger than IPv4.

  1. 2
  2. 8
  3. 4
  4. 6

Answer: A) 2

Explanation:

IPv6 header is only twice as bigger as IPv4.

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

  1. Stateful mode
  2. Stateless mode
  3. Both

Answer: C) Both

Explanation:

IPv6 allows its host devices to automatically configure themselves in both stateful and stateless modes.

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6. Does IPv6 support broadcast?

  1. Yes
  2. No

Answer: B) No

Explanation:

IPv6 does not have any broadcast support anymore.

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7. An IPv6 interface (host) in a network segment is uniquely recognized in which mode of addressing?

  1. Unicast
  2. Anycast
  3. Multicast

Answer: A) Unicast

Explanation:

An IPv6 interface (host) in a network segment is uniquely recognized in the unicast mode of addressing.

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8. Is IPv6 multicast mode is same as that of IPv4?

  1. Yes
  2. No

Answer: A) Yes

Explanation:

Yes, the IPv6 multicast mode is the same as that of IPv4.

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9. An IPv6 address is made of ____ bits.

  1. 238 bits
  2. 160 bits
  3. 138 bits
  4. 128 bits

Answer: D) 128 bits

Explanation:

An IPv6 address is made of 128 bits.

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10. An IPv6 address is made of 128 bits divided into eight ____-bits blocks.

  1. 4
  2. 6
  3. 12
  4. 16

Answer: D) 16

Explanation:

An IPv6 address is made of 128 bits divided into eight 16-bit blocks.

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11. Every block of IPv6 is converted into 4-digit ____ numbers.

  1. Binary
  2. Octal
  3. Hexadecimal
  4. Decimal

Answer: C) Hexadecimal

Explanation:

Every block of IPv6 is converted into 4-digit hexadecimal numbers.

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12. According to the rules of IPv6, If two or more blocks contain consecutive zeroes then ____.

  1. We can omit them all and replace with single colon sign :
  2. We can omit them all and replace with double colon sign ::
  3. We can omit them all and replace with double dash sign --
  4. We can omit them all and replace with double underscore sign __

Answer: B) We can omit them all and replace with double colon sign ::

Explanation:

According to the rules of IPv6, If two or more blocks contain consecutive zeroes then we can omit them all and replace them with double colon sign ::

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13. IPv6 has how many different types of Unicast Address schemes?

  1. 2
  2. 4
  3. 5
  4. 3

Answer: D) 3

Explanation:

There are three distinct Unicast Address Schemes in IPv6.

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14. The Global Routing Prefix's three most important bits are always set to ___.

  1. 000
  2. 001
  3. 111
  4. 110

Answer: B) 001

Explanation:

The Global Routing Prefix's three most important bits are always set to 001.

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15. Auto-configured IPv6 address is known as ____.

  1. Global unicast address
  2. Unique local address
  3. Local link address

Answer: C) Local link address

Explanation:

Auto-configured IPv6 address is known as a Link-Local address.

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16. Link-Local address always starts with ____.

  1. FE80
  2. FE81
  3. AE80
  4. EE82

Answer: A) FE80

Explanation:

Link-Local address always starts with FE80.

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17. ____ are used for communication among IPv6 hosts on a link (broadcast segment) only.

  1. Global unicast address
  2. Unique local address
  3. Local link address

Answer: C) Local link address

Explanation:

Link-local addresses are used for communication among IPv6 hosts on a link (broadcast segment) only.

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18. Are Local link addresses routable?

  1. Yes
  2. No

Answer: B) No

Explanation:

Local link addresses are not routable, so a Router never forwards these addresses outside the link.

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19. ____ form of IPv6 address is globally unique, it should only be used for local communication.

  1. Global unicast address
  2. Unique local address
  3. Local link address

Answer: B) Unique local address

Explanation:

Although the Unique local address form of IPv6 address is globally unique, it should only be used for local communication.

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20. Which of the following address type is equivalent to the public address in IPv4?

  1. Global unicast address
  2. Unique local address
  3. Local link address

Answer: A) Global unicast address

Explanation:

Global unicast address type is equivalent to the public address in IPv4.

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21. Which of the following statement is True?

  1. In IPv4, the address 0.0.0.0 with netmask 0.0.0.0 represents the default route.
  2. In IPv4, the address 1.1.1.1 with netmask 0.0.0.0 represents the default route.
  3. In IPv4, the address 0.0.0.0 with netmask 1.1.1.1 represents the default route.
  4. In IPv4, the address 0.1.0.1 with netmask 0.0.0.0 represents the default route.

Answer: A) In IPv4, the address 0.0.0.0 with netmask 0.0.0.0 represents the default route.

Explanation:

Statement A is correct, In IPv4, the address 0.0.0.0 with netmask 0.0.0.0 represents the default route.

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22. Which of the following statement is True?

  1. The IPv6, address 1:1:1:1:1:1:1:1 with netmask all 0s represents the default route.
  2. The IPv6, address 0:0:0:0:0:0:0:0 with netmask all 1s represents the default route.
  3. The IPv6, address 0:0:0:0:0:0:0:0 with netmask all 0s represents the default route.

Answer: C) The IPv6, address 0:0:0:0:0:0:0:0 with netmask all 0s represents the default route.

Explanation:

Statement C is correct, The IPv6, address 0:0:0:0:0:0:0:0 with netmask all 0s represents the default route.

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23. Loopback addresses in IPv4 are represented by ____ to ____ series.

  1. 127.0.0.0 to 127.255.255.255 series.
  2. 127.255.0.1 to 127.255.255.255 series.
  3. 127.0.0.1 to 127.255.255.255 series.

Answer: C) 127.0.0.1 to 127.255.255.255 series.

Explanation:

Loopback addresses in IPv4 are represented by the 127.0.0.1 to 127.255.255.255 series.

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24. IPv6 headers have ____ Fixed Header.

  1. One
  2. Two
  3. More than one

Answer: A) One

Explanation:

IPv6 headers have one Fixed Header.

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25. IPv6 fixed header is ____ bytes long.

  1. 60
  2. 40
  3. 20

Answer: B) 40

Explanation:

IPv6 fixed header is 40 bytes long.

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26. Which of the following field is intended to prevent packets from looping indefinitely in the network?

  1. Time to live
  2. Header
  3. Hop limit

Answer: C) Hop limit

Explanation:

Hop Limit (8 bits) field is intended to prevent packets from looping indefinitely in the network. This is equivalent to TTL in IPv4.

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27. A ____ is a device that forwards data that is not specifically addressed to it.

  1. Network
  2. Link
  3. Switch
  4. Router

Answer: D) Router

Explanation:

A router is a device that forwards data that is not specifically addressed to it.

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28. ____ is the process of forwarding routable data by selecting the optimum route or path to the destination from among numerous possible routes or paths.

  1. Navigation
  2. Routing
  3. Tariffing

Answer: B) Routing

Explanation:

Routing is the process of forwarding routable data by selecting the optimum route or path to the destination from among numerous possible routes or paths.

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29. How many types of routing protocols are there?

  1. 2
  2. 3
  3. 4
  4. 5

Answer: A) 2

Explanation:

There exist two forms of routing protocols:

  • Distance Vector Routing Protocol
  • Link state routing Protocol

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30. When using the ____, a router exposes its connected routes and learns new routes from its neighbours.

  1. Distance Vector Routing Protocol
  2. Link state routing Protocol

Answer: A) Distance Vector Routing Protocol

Explanation:

When using the distance vector protocol, a router exposes its connected routes and learns new routes from its neighbours.

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31. Which of the following is not the distance vector Routing protocol?

  1. RIP
  2. BGP
  3. OSPF

Answer: C) OSPF

Explanation:

RIP and BGP both are distance vector Routing protocols, whereas OSPF is not.

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32. OSPF and IS-IS are ____ routing protocols.

  1. Distance Vector Routing Protocol
  2. Link state routing Protocol

Answer: B) Link state routing Protocol

Explanation:

OSPF and IS-IS are Link state Routing protocols.

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33. Routing protocols are divided into how many categories?

  1. 5
  2. 4
  3. 3
  4. 2

Answer: D) 2

Explanation:

Routing protocols can be divided into two categories:

  • Interior Routing Protocol
  • Exterior Routing Protocol

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34. Which category of protocols are used within an autonomous system or organization to distribute routes to all routers within its boundaries?

  1. Interior Routing Protocol
  2. Exterior Routing Protocol

Answer: A) Interior Routing Protocol

Explanation:

Interior Routing protocols are used within an autonomous system or organization to distribute routes to all routers within its boundaries.

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35. RIP and OSPF are two examples of ____.

  1. Interior Routing Protocol
  2. Exterior Routing Protocol

Answer: A) Interior Routing Protocol

Explanation:

RIP and OSPF are two examples of Interior Routing Protocols.

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36. Which of the following is the example of exterior Routing Protocol?

  1. RIP
  2. OSPS
  3. BGP

Answer: C) BGP

Explanation:

BGP is an example of exterior Routing Protocol.

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37. An ____ is a protocol that distributes routing information between two independent systems or organizations.

  1. Interior Routing Protocol
  2. Exterior Routing Protocol

Answer: B) Exterior Routing Protocol

Explanation:

An Exterior Routing Protocol is a protocol that distributes routing information between two independent systems or organizations.

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38. What do you mean by RIPng?

  1. Route Info protocol New Generation
  2. Routing Interior Protocol Next Generation
  3. Routing Information Protocol Next Generation

Answer: C) Routing Information Protocol Next Generation

Explanation:

RIPng stands for Routing Information Protocol Next Generation.

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39. RIPng is a ____ protocol.

  1. Interior Routing Protocol
  2. Distance vector Protocol
  3. Both

Answer: C) Both

Explanation:

RIPng stands for Routing Information Protocol Next Generation is an Interior Routing Protocol and is a Distance Vector Protocol.

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40. What is OSPFv3?

  1. Open Shortest Path First version 3
  2. Open Single Path First version 3
  3. Open Solo Path First version 3
  4. Open Straight Path First version 3

Answer: A) Open Shortest Path First version 3

Explanation:

OSPFv3 stands for Open Shortest Path First version 3.

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41. OSPFv3 is a ____.

  1. Interior Routing Protocol
  2. Exterior Routing Protocol

Answer: A) Interior Routing Protocol

Explanation:

OSPFv3 is an interior routing protocol.

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42. What is the full form of BGPv4?

  1. Bridge Gateway Protocol
  2. Border Gateway Protocol
  3. Board Gateway Protocol.

Answer: B) Border Gateway Protocol

Explanation:

BGP stands for Border Gateway Protocol.

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43. ICMPv6 stands for ____.

  1. Intranet Controller Model Protocol version 6
  2. Internet Controller Message Protocol version 6
  3. Internet Control Model Protocol version 6
  4. Internet Control Message Protocol version 6

Answer: D) Internet Control Message Protocol version 6

Explanation:

ICMPv6 stands for Internet Control Message Protocol version 6.

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44. ICMPv6 is used for which of the following reasons?

  1. Diagnostic functions
  2. Error and information message
  3. statistical purposes
  4. All of the above

Answer: D) All of the above

Explanation:

ICMPv6 protocol is used for diagnostic functions, error and information messages, and statistical purposes.

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45. What is DHCPv6?

  1. Dynamic Host Conformation Protocol version 6
  2. Deactivate Host Configuration Protocol version 6
  3. Deactivate Host Conformation Protocol version 6
  4. Dynamic Host Configuration Protocol version 6

Answer: D) Dynamic Host Configuration Protocol version 6

Explanation:

DHCPv6 is a Dynamic Host Configuration Protocol version 6.

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