CMPS 329 (Computer network/security) Flashcards
What is the OSI Layer, and what does it accomplish?
Divides functions of hardware and software into 7 layers.
Creates a standard way to develop, implement, and isolate problems.
What are the layers in the OSI Model?
All People Seem To Need Data Processing All Prostitutes Seem To Need Double Penetration 7. Application 6. Presentation 5. Session 4. Transport 3. Network 2. Data Link 1. Physical
Physical Layer
Defines the physical and electrical specification of data connection
Data Layer
Communication medium, network adapter
Network Layer
Best-effort global packet delivery
Transport Layer
Responsible for delivering data to the appropriate application process on the host computers
What is NAT?
Network address translation
A way to map an entire network (or networks) to a single IP address
TCP
Transmission control protocol
Enables two hosts to establish a connection and exchange streams of data.
UDP
User Datagram Protocol
A core member IP suite
Uses a simple connectionless transmission model with a minimum of protocol mechanism.
DoS attack
Denial of Service
An attempt to make a machine or network resource unavailable to its intended users.
Generally consists of efforts to temporarily or indefinitely interrupt or suspend services ofa host connected to the internet.
MitM
Man in the Middle
An attacker secretly relays and possibly alters the communication between two parties who believe they are directly communicated with each other.
PoD
Ping of Death
The sending of a malformed or malicious ping to a computer.
Authorization
Rules that determine who is allowed to do what?
Authentication
The process of ascertaining that somebody is who they really are.
