IP Address MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 2, 2025

1. Choose the address of class D.
(A) Unicast
(B) Reserved
(C) Multicast
(D) None of the above

2. Select the wrong class.
(A) CLASS A = 1 to 126
(B) CLASS C = 192 to 220
(C) CLASS B = 128 to 191
(D) CLASS D = 224 to 239

3. Select the bits from where the class A address starts.
(A) 110
(B) 10
(C) 0
(D) 1111

4. Select the bits from where the class B address starts.
(A) 0
(B) 110
(C) 10
(D) 1111

5. Select the bits from where the class C address starts.
(A) 0
(B) 10
(C) 110
(D) 1111

6. Select which one of these is not a class of IP addresses.
(A) Class A
(B) Class F
(C) Class E
(D) Class B

7. Select the address of class A, B and C.
(A) Reserved
(B) Multicast
(C) Unicast
(D) None of the above

8. Select the bits from where the class D address starts.
(A) 0
(B) 10
(C) 110
(D) 1110

9. How many bits are in Version 6 of IP address?
(A) 64 bits
(B) 32 bits
(C) 128 bits
(D) 256 bits

10. What does IANA stand for?
(A) Internal Associative Numbers Authority
(B) Internal Assigned Numbers Authority
(C) Internet Associative Numbers Authoritative
(D) Internet Assigned Numbers Authority

11. RIR stands for ________.
(A) Regional Internal Registries
(B) Registries Internet Regional
(C) Regional Internet Registries
(D) Registries Internal Regional

12. How many versions of IP are there?
(A) 4 versions
(B) 3 versions
(C) 2 versions
(D) 1 version

13. What does VLSM stand for?
(A) Version Length Subnet Masking
(B) Version Length Surface Masking
(C) Variable Length Surface Masking
(D) Variable Length Subnet Masking

14. Which protocol is included in desktops and operating systems?
(A) IPv3 protocol
(B) IPv4 protocol
(C) Both IPv6 and IPv4 protocol
(D) IPv6 protocol

15. Select the field that specifies how the datagram should be handled.
(A) Type of Service
(B) Identification
(C) Header length
(D) Flags

16. How many bits are assigned to the identification field?
(A) 3
(B) 16
(C) 8
(D) 32

17. How many bits are assigned to the flag field?
(A) 2
(B) 8
(C) 3
(D) 16

18. Select the flag value to identify the last fragment.
(A) 1
(B) 0
(C) 2
(D) 11

19. Select the field that helps to check the rearrangement of the fragments.
(A) Identifier
(B) Flags
(C) Offset
(D) Protocols

20. Select the field in IPv4 datagram that is not about fragmentation.
(A) Flags
(B) TOS
(C) Offset
(D) Identifier

21. Select the 1st bit in the flags field.
(A) Do not fragment bit
(B) Reserved for future use
(C) More fragment bit
(D) None of the above

22. Select the field that specifies how long an IP packet can reside in-network before it is discarded.
(A) Identification
(B) Options
(C) TOS
(D) Time to live

23. Select the field used for network testing, debugging, control routing, timing, and management.
(A) Identification
(B) Options
(C) Flags
(D) Time to live

24. Classful addressing is replaced with what in IPv4?
(A) Classful advertising
(B) Classful addressing new version
(C) Classless addressing
(D) Classless advertising

25. How many bytes are in dotted-decimal notation in an IP address?
(A) 3
(B) 5
(C) 4
(D) None of the above

26. Select the minimum header size of an IP packet.
(A) 16 bytes
(B) 20 bytes
(C) 10 bytes
(D) 10 bytes

27. Select the size of Network bits and Host bits of Class A IP address.
(A) Network bits 7, Host bits 23
(B) Network bits 8, Host bits 24
(C) Network bits 7, Host bits 2
(D) Network bits 8, Host bits 23

28. What is the use of subnetting?
(A) It speeds up the speed of the network
(B) It divides the network into network classes
(C) It divides one large network into several smaller ones
(D) None of the above

29. Which one is correct about Class B Address of IP?
(A) Network bit – 18, Host bit – 16
(B) Network bit – 16, Host bit – 14
(C) Network bit – 14, Host bit – 16
(D) Network bit – 12, Host bit – 14

30. What represents the last address of an IP address?
(A) Unicast address
(B) Broadcast address
(C) Network address
(D) None of the above

31. What is the size of Host bits in Class B of IP address?
(A) 16
(B) 08
(C) 04
(D) 32

32. Which one is not an application for IP protocol?
(A) Is connectionless
(B) Offers reliable service
(C) Offers unreliable service
(D) No error checking

33. What is the header size of the datagram in IPv4?
(A) 0 to 20 bytes
(B) 20 to 60 bytes
(C) 20 to 40 bytes
(D) 20 to 80 bytes

34. What is the format of the IP address?
(A) 34 bit
(B) 32 bit
(C) 16 bit
(D) 64 bit

35. What is the usable size of Network bits in Class B IP address?
(A) 04
(B) 14
(C) 08
(D) 16

36. Select the bits for the IP address.
(A) 24
(B) 128
(C) 64
(D) 32

37. What is the size of the header if the value of HELEN in an IP packet is 0101?
(A) 20
(B) 5
(C) 40
(D) 60