IP Addressing Fundamentals MCQ Test: IPv4, IPv6 and Subnetting

Questions (30)

1. What is the bit length of an IPv4 address?

   • a) 16 bits
   • b) 32 bits
   • c) 64 bits
   • d) 128 bits
   View Answer

   Correct 32 bits

2. Which class of IPv4 addresses is used for multicast communication?

   • a) Class A
   • b) Class B
   • c) Class D
   • d) Class E
   View Answer

   Correct Class D

3. What is the range of the first octet for Class C IPv4 addresses?

   • a) 1-126
   • b) 128-191
   • c) 192-223
   • d) 224-239
   View Answer

   Correct 192-223

4. What is the default subnet mask for a Class B IPv4 address?

   • a) 255.0.0.0
   • b) 255.255.0.0
   • c) 255.255.255.0
   • d) 255.255.255.255
   View Answer

   Correct 255.255.0.0

5. Which IPv6 address type is used for communication within a single node?

   • a) Global unicast
   • b) Link-local
   • c) Loopback
   • d) Multicast
   View Answer

   Correct Loopback

6. What does CIDR stand for in IP addressing?

   • a) Classless Inter-Domain Routing
   • b) Communication Inter-Domain Routing
   • c) Clustered IP Distribution Range
   • d) Classful Internet Design Rules
   View Answer

   Correct Classless Inter-Domain Routing

7. How many bits are there in an IPv6 address?

   • a) 32 bits
   • b) 64 bits
   • c) 96 bits
   • d) 128 bits
   View Answer

   Correct 128 bits

8. The subnet mask 255.255.255.0 is equivalent to which CIDR notation?

   • a) /8
   • b) /16
   • c) /24
   • d) /32
   View Answer

   Correct /24

9. What is the primary purpose of subnetting?

   • a) Increase network speed
   • b) Conserve IP addresses
   • c) Simplify routing tables
   • d) Ensure data integrity
   View Answer

   Correct Conserve IP addresses

10. Which of the following is not a valid IPv4 address?

    • a) 192.168.0.1
    • b) 10.0.0.256
    • c) 172.16.254.1
    • d) 127.0.0.1
    View Answer

    Correct 10.0.0.256

11. The first 64 bits of an IPv6 address typically represent the:

    • a) Host ID
    • b) Network prefix
    • c) Subnet ID
    • d) Multicast group
    View Answer

    Correct Network prefix

12. Which protocol is used to assign IP addresses dynamically?

    • a) ARP
    • b) ICMP
    • c) DHCP
    • d) DNS
    View Answer

    Correct DHCP

13. What type of IPv6 address is FE80::/10?

    • a) Global unicast
    • b) Link-local
    • c) Multicast
    • d) Anycast
    View Answer

    Correct Link-local

14. The address 127.0.0.1 is used for:

    • a) Broadcasting
    • b) Multicasting
    • c) Loopback testing
    • d) Assigning IPs dynamically
    View Answer

    Correct Loopback testing

15. Which IPv4 address is reserved for local host communication?

    • a) 255.255.255.255
    • b) 127.0.0.1
    • c) 192.168.1.1
    • d) 0.0.0.0
    View Answer

    Correct 127.0.0.1

16. What is the main difference between IPv4 and IPv6?

    • a) IPv6 has a smaller address space
    • b) IPv6 includes security features by default
    • c) IPv4 supports only private addressing
    • d) IPv6 is connection-oriented
    View Answer

    Correct IPv6 includes security features by default

17. Which type of address is automatically assigned to a device in the absence of DHCP in IPv4?

    • a) Broadcast address
    • b) Multicast address
    • c) APIPA address
    • d) Loopback address
    View Answer

    Correct APIPA address

18. How many subnets can be created with a /26 subnet mask?

    • a) 2
    • b) 4
    • c) 8
    • d) 64
    View Answer

    Correct 8

19. What is the hexadecimal equivalent of the IPv4 address 192.168.1.1?

    • a) C0.A8.01.01
    • b) C0:A8:1:1
    • c) 192.168.1.1
    • d) C.A:1:1
    View Answer

    Correct C0.A8.01.01

20. What does the term "broadcast address" mean in IPv4?

    • a) The address used to send data to all devices on a network
    • b) The default gateway address
    • c) The first address in a subnet
    • d) An address used for multicast communication
    View Answer

    Correct The address used to send data to all devices on a network

21. Which address type in IPv6 starts with "FF"?

    • a) Unicast
    • b) Multicast
    • c) Link-local
    • d) Anycast
    View Answer

    Correct Multicast

22. What is the valid range for IPv4 private addresses in Class A?

    • a) 1.0.0.0 - 127.255.255.255
    • b) 10.0.0.0 - 10.255.255.255
    • c) 192.168.0.0 - 192.168.255.255
    • d) 172.16.0.0 - 172.31.255.255
    View Answer

    Correct 10.0.0.0 - 10.255.255.255

23. What is the main purpose of NAT (Network Address Translation)?

    • a) Encrypt communication
    • b) Translate private IP addresses to public IP addresses
    • c) Assign IP addresses dynamically
    • d) Create subnets within a network
    View Answer

    Correct Translate private IP addresses to public IP addresses

24. The IPv6 address ::1 is equivalent to which IPv4 address?

    • a) 192.168.1.1
    • b) 127.0.0.1
    • c) 0.0.0.0
    • d) 255.255.255.255
    View Answer

    Correct 127.0.0.1

25. How many addresses are available in a /29 subnet?

    • a) 4
    • b) 6
    • c) 8
    • d) 16
    View Answer

    Correct 8

26. Which of the following is an example of a global unicast IPv6 address?

    • a) FE80::1
    • b) FF02::1
    • c) 2001:0db8::1
    • d) ::1
    View Answer

    Correct 2001:0db8::1

27. Which class of IPv4 addresses has the most hosts per network?

    • a) Class A
    • b) Class B
    • c) Class C
    • d) Class D
    View Answer

    Correct Class A

28. What is the primary benefit of IPv6 over IPv4?

    • a) Enhanced security
    • b) Increased address space
    • c) Better compatibility with older devices
    • d) Simplified routing protocols
    View Answer

    Correct Increased address space

29. How many hexadecimal blocks are present in an IPv6 address?

    • a) 4
    • b) 6
    • c) 8
    • d) 16
    View Answer

    Correct 8

30. The subnet mask 255.255.255.128 corresponds to which CIDR prefix?

    • a) /24
    • b) /25
    • c) /26
    • d) /27
    View Answer

    Correct /25