Chapter 4 Network Protocols and Routing Flashcards
TCP
Transmission Control Protocol - operates in the transport layer of the OSI model and provides reliable data delivery services. syn > syn ack > ack
Three-way Handshake
A three-step process in which Transport layer protocols establish a connection between nodes.
Checksum
A method of error checking that determines id the contents of an arriving data unit match the contents of the data unit sent by source.
Flow Control
The process of gauging the appropriate rate of transmission based on how quickly the recipient can accept data.
Headers
Constructed in groups of 32 bits called words. Each word consists of 4 bytes, called blocks, of 8 bits each.
UDP
User Datagram Protocol - An unreliable, connectionless protocol. Provides no handshake to establish a connection, ack of transmission received, error checking, seq, or flow control and is, therefore, more efficient and faster than TCP.
IP
Internet Protocol - Belongs to the network layer of the OSI model. It specifies where data should be delivered, identifying the data’s source and destination IP addresses,
ICMP
Internet Control Message Protocol - A network layer, core protocol that reports on the success or failure of data delivery.
ICMP Packet
Consist of type, code, checksum, data.
TCP Segment
Consist of source port, destination port, sequence number, data
ARP
Address Resolution Protocol - works in conjunction with IPv4 to discover the MAC address of a node on the local network and to maintain a database that maps local IP addresses to MAC addresses. Layer 2 - Datalink. Dynamic - assigned, static - created.
Ethernet
Adaptable, capable of running in a variety of network media, and offers excellent throughput at a reasonable cost. Layer 2 - Datalink.
Collision
The transmission of two nodes interfere with each other.
