TCP/IP model Flashcards
What layers make up the TCP/IP model?
Network Interface, Internet, Transport, and Application Layers
What OSI model layers are contained in the TCP/IP model’s Network Interface Layer?
Physical layer and Data Link Layer
What OSI model layers are contained in the TCP/IP model’s Application Layer?
Session Layer, Presentation Layer, and Application Layer
What OSI model layer is contained in the TCP/IP model’s Internet Layer?
Network Layer
What is layer 4 of TCP/IP model? What are some examples?
Layer 4 Application- defines TCP/IP application protocols and how programs interface with the transport layer service. This is the layer the end-user interacts with.
EX: from layers 5,6,7 of OSI model
HTTPS,TELNET, FTP, DNS, SMTP, SSL, TLS, etc..
What is layer 3 of TCP/IP model? What are some examples?
Layer 3 Transport- Provides communication session management between hosts and defines level of service and status of connection used for transport
EX: TCP, UDP, or RTP
What is layer 2 of TCP/IP model? What are some examples?
Layer 2 Internet- packages data into IP diagrams and routes these IP diagrams between hosts across the network. This routing occurs externally from your network, this is where internal meets external. (EX: IP/ICMP/ARP/ Reverse ARP
What is layer 1 of TCP/IP model? What are some examples?
Layer 1 Network Interface- concerned with physical and electrical characteristics. It describes how to transmit bits across the network and determines how the interface uses network medium. EX: ethernet Fiber RS-232
Why is the TCP/IP model more relevant than the OSI model?
- TCP/IP model is more relevant than OSI Model because most networks today are TCP/IP based.
- a more relevant model for network designers since its based on TCP/IP and only consists of 4 layers
What do IPv4 packets contain?
consists of:
- source address
- destination address
- IP flags(allow packet fragmentation and other special things to occur)
- Protocol (TCP or UDP)
