Internet Protocol (IP) Flashcards
4.1.2
What is the Internet Protocol (IP)
A set of requirements for addressing and routing data across networks, including the internet
Where does the IP protocol reside
In the Network layer on the OSI model
In the Internet Layer on the TCP model
Explain how IPv4 works
It uses 32 bit IP addresses divided into 5 classes. When it was first established in the 1980s there were roughly 4 billion IP addresses.
Class A IPv4 address
Range 1-127
Number of Networks 127
Number of Hosts per Network 16,777,214
Class B IPv4 address
Range 128-191
Number of Networks 16,384
Number of Hosts per Network 65,534
Class C IPv4 address
Range 192-223
Number of Networks 2,097,152
Number of Hosts per Network 254
Class D IPv4 address
Reserved for Multicast
Class E IPv4 address
Reserved for experimental use
What is NAT
technique used to map (or translate) one or more local (internal) IP addresses to one or more global (external) IP addresses.
Designed to extend the use of IPv4.
NAT Implementation
Firewalls, Routers, Gateways and proxies. It operates on the Network Layer.
Explain how IPv6 works
Uses 128 bit IP addresses that supports a larger number of addresses. The address is portioned into 4 hexadecimal digits and segmented into 2 parts 64 bit network prefix and 64 bit interface identifier.
What is scoped addresses
A benefit of IPv6 that adds a layer of security and access control administrators who can group and then deny or allow access to network services like file servers or printing
What is Autoconfiguration
A benefit of IPv6 that removes the need for both DHCP and NAT because of the larger pool of public addresses
What is QoS
A benefit of IPv6 that base the content priority, traffic management is conducted according to preset QoS priority values.
What is unicast
A technology that supports only a single communication to a specific recipient in a single transmission. One to One transmission supported by IPv4 and IPv6
