Test your basic knowledge |

IPV4 Addressing

Subject : it-skills

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What is the ARP Operation value for a Reverse ARP Request?
ECN-Echo
198.18.0.0/15
3
Sequence Number + Data payload octets + 1

2. What is covered by the TCP Checksum field?
46
255.255.255.248
Router#debug arp
Both the TCP header and the encapsulated data

3. What TCP/IP protocol suite layer corresponds to the network layer of the OSI model?
IP Precedence (3-bit); ToS (4-bit); Reserved (1-bit)
Sequence Number
Internet
Internet Corporation for Assigned Network Numbers

4. What is the IPv4 Protocol number for IP in IP encapsulation?
4
Length of header in words (32-bit)
2
Internet Control Message Protocol

5. What is the IPv4 Protocol number of RSVP?
46
0.0.0.0/8
ICANN
1

6. Who group public IPv4 address space by major geographic region?
ICANN and IANA
Source Port (16-bit); Destination Port (16-bit); UDP Length (16-bit); Checksum (16-bit)
More Fragments follow
Router Advertisement

7. What is ICMP Type 9?
Final
0
9
Router Advertisement

8. What are the private IPv4 address ranges?
10.0.0.0/8; 172.16.0.0/12; 192.168.0.0/16
The next sequence number that the source expects to receive from the destination
IPv4 and IPv6
Version (4-bit); Header Length (4-bit); ToS (8-bit); Total Length (16-bit); Identifier (16-bit); Flags (3-bit); Fragment Offset (13-bit); TTL (8-bit); Protocol (8-bit); Header Checksum (16-bit); Source Address (32-bit); Destination Address (32-bit);

9. Who is responsible for the global coordination of the DNS Root - IP addressing - and other Internet protocol resources?
Version (4-bit); Header Length (4-bit); ToS (8-bit); Total Length (16-bit); Identifier (16-bit); Flags (3-bit); Fragment Offset (13-bit); TTL (8-bit); Protocol (8-bit); Header Checksum (16-bit); Source Address (32-bit); Destination Address (32-bit);
17
Socket
IANA

10. What are the IP Precedence values?
IANA
Acknowledgement
Reset
0 Routine; 1 Priority; 2 Immediate; 3 Flash; 4 Flash Override; 5 Critical; 6 Internetwork Control; 7 Network Control

11. What is prefix /26 in decimal notation?
127.0.0.0/8
IPv4 and IPv6
255.255.255.192
Acknowledgement

12. How can the receiver determine the size of a packet's data payload based on the IPv4 header?
6
Subtract Header Length field from Total Length field
Socket
Reserved (1-bit); DF (1-bit); MF (1-bit)

13. Who allocates public IP address ranges to NIRs or LIRs?
Internet Assigned Numbers Authority
Router#debug arp
Local Internet Registry
RIRs

14. Which IPv4 address range is reserved for self-identification on a local subnet?
0.0.0.0/8
DHCP
Router Selection
Echo Reply

15. What is the IPv4 Protocol number for EIGRP?
0x0800
Length of header in words (32-bit)
Electrical/Optical - Mechanical - Functional and Procedural
88

16. What is the format of the Flags field in the IPv4 header?
Reserved (1-bit); DF (1-bit); MF (1-bit)
4
Mostly large ISPs - enterprises - or academic institutions
255.255.255.128

17. What is the format of an ICMP header?
Synchronize
Each router decrements the TTL
192.0.2.0/24
Type (8-bit); Code (8-bit); Checksum (16-bit); Variable fields

18. What is a TCP port number of an application called when it is coupled with the IP address of the server?
DHCP
Open Systems Interconnection
1 Determine how many subnets are required; 2 Determine how many hosts per subnet are required; 3 Determine the subnet mask for each subnet; 4 Calculate the network address for each subnet
Socket

19. Which IPv4 address range is reserved for use in documentation and example code?
Regional Internet Registry
192.0.2.0/24
Router(config-if)#no ip proxy-arp
Reserved (1-bit); DF (1-bit); MF (1-bit)

20. What are the most common IP version numbers?
Used by routers to notify hosts of another router on the data link that should be used for a particular destination
3
IPv4 and IPv6
0x0800

21. What are classless routing protocols?
Socket
Protocols that include subnet masks in their routing updates
192.0.2.0/24
IP Precedence (3-bit); ToS (4-bit); Reserved (1-bit)

22. What is proxy ARP?
2
Congestion Window Reduced
Router Advertisement
Method where routers - by responding to ARP requests for IP addresses in different subnets - make themselves available to hosts with no default gateway configured

23. What is the format of the TCP Header Length field?
RFC 3330
IANA
Length of header in words (32-bit)
URG flag set

24. What is the name of the queuing and forwarding of IP packets based on DiffServ?
ICANN and IANA
Largest segment size that the sender is willing to accept
46
Per-Hop Behaviour (PHB)

25. What is the ARP Hardware address length value for Ethernet?
RFC 791
1
Internet Assigned Numbers Authority
6

26. What is the the MF-bit in the IPv4 header?
Socket
Electrical/Optical - Mechanical - Functional and Procedural
More Fragments follow
192.0.2.0/24

27. What is Inverse ARP?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

28. What are the uses of gratuitous ARP?
Duplicate address checks; Advertise new data-link identifiers; Update the ARP caches of hosts
Internet Protocol
Synchronize
0 Routine; 1 Priority; 2 Immediate; 3 Flash; 4 Flash Override; 5 Critical; 6 Internetwork Control; 7 Network Control

29. What are classful routing protocols?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

30. What is gratuitous ARP?
Router(config-if)#no ip proxy-arp
An ARP request issued by a host with its own IPv4 address as the target address
1-2 Network interface; 3 Internet; 4 Host-to-host; 5-7 Application
6

31. What is the IPv4 Protocol number for OSPF?
Local Internet Registry
89
RFC 1918
Internet Corporation for Assigned Network Numbers

32. What are the protocol categories that describe the physical layer?
Windowing
IANA
Electrical/Optical - Mechanical - Functional and Procedural
0.0.0.0/8

33. What is the function of ICMP redirect messages?
Internet Service Provider
Internet
Used by routers to notify hosts of another router on the data link that should be used for a particular destination
Router(config-if)#no ip redirects

34. What are the most frequently used options in the IPv4 header?
Loose source routing; Strict source routing; Record route; Timestamp
198.18.0.0/15
Acknowledgement
Source Port (16-bit); Destination Port (16-bit); Sequence Number (32-bit); Acknowledgement Number (32-bit); Header Length (4-bit); Reserved (4-bit); Flags (8-bit); Windows Size (16-bit); Checksum (16-bit); Urgent Pointer (16-bit); Options; Padding

35. What routing protocols are classful?
An ARP request issued by a host with its own IPv4 address as the target address
RIPv1 and IGRP
Echo
RFC 1918

36. What is FIN?
Padding of zeros to ensure that the header ends on a 32-bit boundary
Router Selection
More Fragments follow
Final

37. What is LIR?
Local Internet Registry
4
More Fragments follow
1

38. What TCP/IP protocol suite layer corresponds to the transport layer of the OSI model?
Router Advertisement
Host-to-host
Subtract Header Length field from Total Length field
Protocols that don't include subnet masks in their routing updates

39. Which RFC defines the special use IPv4 address ranges?
Local Internet Registry
Synchronize
Final
RFC 3330

40. Configures how long a dynamically learned protocol address and its corresponding hardware address remains in the ARP cache
Used by a host to obtain the IPv4 address associated with its own MAC address
Protocols that include subnet masks in their routing updates
Router(config-if)#no ip proxy-arp
Router(config-if)#arp timeout {seconds}

41. What is added after the Option field in the TCP header?
Padding of zeros to ensure that the header ends on a 32-bit boundary
0
198.18.0.0/15
Transmission Control Protocol

42. What TCP/IP protocol suite layer corresponds to the session - presentation and application layers of the OSI model?
Internet
Application
89
198.18.0.0/15

43. Which IPv4 address range is reserved for benchmark testing of Internet devices (RFC 2544)?
ECN-Echo
Congestion Window Reduced
198.18.0.0/15
IANA

44. What is the ARP Protocol address length value for IPv4?
4
Router(config-if)#arp timeout {seconds}
IPv4 and IPv6
0

45. What is the format of a TCP header?
Congestion Window Reduced
Router(config-if)#no ip redirects
Source Port (16-bit); Destination Port (16-bit); Sequence Number (32-bit); Acknowledgement Number (32-bit); Header Length (4-bit); Reserved (4-bit); Flags (8-bit); Windows Size (16-bit); Checksum (16-bit); Urgent Pointer (16-bit); Options; Padding
192.88.99.0/24

46. What are the steps to subnet an IPv4 address?
Synchronize
Final
1 Determine how many subnets are required; 2 Determine how many hosts per subnet are required; 3 Determine the subnet mask for each subnet; 4 Calculate the network address for each subnet
Source Port (16-bit); Destination Port (16-bit); UDP Length (16-bit); Checksum (16-bit)

47. What is ICMP Type 3?
4
Transmission Control Protocol
1
Destination Unreachable

48. What is ICMP Type 10?
Used by routers to notify hosts of another router on the data link that should be used for a particular destination
Time to Live
Router Selection
RFC 791

49. What is prefix /30 in decimal notation?
Time to Live
255.255.255.252
Internet Protocol
Identifier; Flags and Fragmentation Offset

50. What is the Fragment Offset field in the IPv4 header?
Offset - in units of eight octets - from the beginning of the original header to the beginning of the fragment
All Internet Registries
Number of octets to be added to the Sequence Number to indicate the end of the urgent data
Padding of zeros to ensure that the header ends on a 32-bit boundary