Chapter 1: Introduction Flashcards
(9 cards)
How many layers in the OSI model?
What are the layers?
Seven layers:
1. Physical Layer
2. Data Link Layer
3. Network Layer
4. Transport Layer
5. Session Layer
6. Presentation Layer
7. Application Layer
How many layers in the TCP/IP model?
What are the layers?
Five layers:
1. Physical Layer
2. Data Link Layer
3. Network Layer
4. Transport Layer
5. Application Layer
What is the specific role of the Physical Layer?
Transmits raw bits over a medium
What is the specific role of the Data Link Layer?
Group bits into a Frame
What is the specific role of the Network Layer?
Organise frames into packets and route them from sender to receiver
What are the common Protocols of the Transport Layer?
UDP & TCP
User Datagram Protocol & Transmission Control Protocol
What are the steps in a 3-way handshake
- Acknowledgement
- Sequencing
- Checksum
True or False
UDP is for reliable communication
False
UDP is for unreliable communication
True or False
TCP is for reliable communication
True
