Datagram Forwarding - Module 11: Networking

These flashcards cover vocabulary and key concepts related to datagram forwarding and networking from Module 11.

Connectionless Service

A data communication method where the sender transmits data without confirming if the receiver is ready to receive it.

Datagram

A data packet, specifically in connectionless services, that contains the information necessary for it to be independently routed across a network.

Encapsulation

The process of placing a datagram inside a frame for transmission across networks.

Fragmentation

The process of dividing a datagram into smaller pieces when it exceeds the maximum transmission unit (MTU) of a network.

Reassembly

The action of reconstructing the original datagram from its fragments at the receiving end.

MTU (Maximum Transmission Unit)

The largest size of a packet or frame that can be sent in a single transmission over a network.

Next Hop Forwarding

A method where each router determines the next destination for a datagram based on the destination address found in its header.

Forwarding Table

A table used by routers to determine the next hop for each incoming datagram based on its destination.

Best Effort Delivery

An Internet service model where no guarantees are made about the delivery of data packets; losses, duplications, and unordered packets can happen.

IP Datagram Header

The fixed size header of an IPv4 datagram that contains essential fields for routing and delivery.

Checksum

A value used in IP headers to detect errors in the datagram's header.

Source IP Address

The 32-bit Internet address of the original sender that remains unchanged as the datagram travels through the network.

Destination IP Address

The 32-bit Internet address indicating the ultimate destination of the datagram that also remains unchanged during transit.

Fragment Offset

A field that indicates the position of a fragment in relation to the original datagram, aiding in proper reassembly.

IP Version 6 (IPv6)

The latest IP protocol that features a different header format with larger address space and improved routing capabilities.

Longest Prefix Match

An algorithm used in routing to choose the most specific route when multiple routes match a destination address.

Packet Loss

Occurs when one or more data packets traveling across a computer network fail to reach their intended destination.

Transport Layer Protocols

Protocols like TCP that provide reliable, connection-oriented communication over the Internet.

Network Address Translation (NAT)

A process that translates private IP addresses to a public IP address to allow access to external networks.

Wireless Frame

A data structure used in wireless networking, containing headers specific to wireless protocols.

CIDR (Classless Inter-Domain Routing)

A method for allocating IP addresses and routing Internet Protocol packets.