Network Technology - Chapter 4 (Network layer)

TRUE

FALSE

Addressing end devices

Encapsulate Sender and Receiver IP address

Routing packets from source to destination

De-encapsulation

Router

NIC

Switch

Connectionless - no connection is established before sending data packets

Best effort delivery - does not guarantee packet delivery

Stateful - information about connection is retained for future use

Media independent - operates independently of the medium carrying the data

Packet

Segment

Data

Frame

Ensures packet is sent in the correct direction to the destination

Contains information for network layer processing

Information in the header is used by a Router

Information eventually reaches the Application layer

IEEE

ICANN

IETF

NCS

Increased address space - 128 bits instead of 32 bits

Improved Packet Handling - simplified header with fewer fields

Eliminate the needs of NAT - since there is huge amount of addressing

Requires NAT to use private addressing internally and mapped to shared public address

Header is fixed at 40 bytes or octets long

IPv6 header is simplified but larger

IPv4 fields such as Flag, Fragment offset and header checksum are removed

IPv6 header is more complicated and larger

Itself - 127.0.0.1

Local host - which is another host in the same network

Remote host - which is another host in a different network

Only other hosts