Explaining IPv4 And IPv6 Addressing

Question 1

Fields in a data gram used to identify source and destination IP addresses, protocol type and other layer 3 properties

Answer 1

Internet Protocol (IP) header

Question 2

Identifier for a protocol working over the Internet Protocol, such as TCP, UDP, ICMP, GRE, EIGRP, or OSPF

Answer 2

IP Protocol Type

Question 3

Format for expressing IPv4 addresses using four decimal values from 0 to 255 for each octet

Answer 3

Dotted decimal notation

Question 4

Number of bits applied to an IP address to mask the network ID portion from the host/interface ID portion. Also referred to as a network mask or subnet mask.

Answer 4

Network Mask

Question 5

Division of a single IP network into 2 or more smaller broadcast domains by using longer netmasks within the boundaries of the network. Also called a subnet mask.

Answer 5

Subnet Addressing

Question 6

IP configuration parameter that identifies the address of a router on the local subnet that the host can use to contact other networks.

Answer 6

Default Gateway

Question 7

Broadcast mechanism by which the hardware MAC address of an interface is matched to an IP address in a local network segment.

Answer 7

Address Resolution Protocol (ARP)

Question 8

A packet addressed to a single host. If the host is not on the local subnet, the pack must be sent via one or more routers

Answer 8

Unicast

Question 9

Packet or frame addressed to all hosts on a local network segment, subnet or broadcast domain. Routers do not ordinarily forward broadcast traffic. The broadcast address of IP is one where the host bits are all set to 1; at the MAC layer it is the address ff:ff:ff:ff:ff:ff.

Answer 9

Broadcast

Question 10

A packet addressed to a selection of hosts (in IP, those belonging to a multicast group).

Answer 10

Multicasting

Question 11

Layer 3 protocol that allows hosts to join and leave groups configured to receive multicast communications.

Answer 11

Internet Group Management Protocol (IGMP)

Question 12

IP delivery mechanism whereby a packet is addressed to a single host from a group sharing the same address

Answer 12

Any cast

Question 13

Host operating multiple protocols simultaneously on the same interface. Most hosts are capable of dual stack IPv4 and IPv6 operation for instance.

Answer 13

Dual Stack

Question 14

Encapsulating data from a local protocol within another protocols PDU to transport it to a remote network over an intermediate network. Tunneling protocols are used in many contexts including virtual private networks (VPNs) and transport IPv6 packets over IPv4 networks.

Answer 14

Tunneling

Question 15

IPv6 protocol used to identify link local nodes

Answer 15

Neighbor Discovery (ND) protocol

Question 16

Packet sent by and IPv6 capable router to notify hosts about prefixes and auto configuration methods available on the local link

Answer 16

Router advertisement (RA)

Question 17

Mechanism used in IPv6 for hosts to assign addresses to interfaces without requiring manual intervention

Answer 17

Stateless address auto configuration (SLAAC)

Question 18

IP addressing scheme used within the scope of a single broadcast domain only.

Answer 18

Link local

Question 19

Parameter assigned by a host to distinguish ambiguous interface addresses within a link local scope.

Answer 19

Zone index

Question 20

Format for representing IPv6 addresses using hex double bytes with colon delimitation and zero compression

Answer 20

Canonical notation

Question 21

IP level protocol for reporting errors and status information supporting the function of troubleshooting utilities such as ping

Answer 21

Internet Control Message Protocol (ICMP)

Question 22

Cross platform command tool for testing IP packet transmission

Answer 22

Ping

Question 23

Utility to display and modify contents of hosts cache of IP to MAC address mappings as resolved by address resolution protocol

Answer 23

ARP

Question 24

Command tool used to gather information about the IP configuration of a Windows host

Answer 24

Ipconfig