Domain 4 - Communications And Network Security (OSI Model) Flashcards
TCP layer that encompasses the OSI layers: Application (7), Presentation (6), and Session (5).
Application Layer 4 - TCP Model
TCP layer where the connection between users is maintained. This layer corresponds with the OSI Transport Layer (4).
Transport Layer 3 - TCP Model
TCP layer the corresponds directly with OSI Network Layer 3.
Internet Layer 2 - TCP Model
TCP layer that corresponds to OSI Data Link Layer 2 and Physical Layer 1.
Network Access Layer 1 - TCP Model
Presents data to the Application Layer (7). Contains two sublayers: Common Application Service Element (CASE) and Specific Application Service Element (SASE).
Presentation Layer 6 - OSI Model
Provides reliable connection between peer hosts. Creates the session and ends the session when the host is done. It has three modes: Full duplex, half-duplex, and simplex.
Session Layer 5 - OSI Model
Creates and provides end-to-end error detection and correction between peer hosts. UDP and TCP are important protocols in this layer.
Transport Layer 4 - OSI Model
Provides information and routing between hosts that are not physically connected. Internet Protocol (IP) addresses are included at this layer.
Network Layer 3 - OSI Model
Ensures information is error free and prepares the packets that it receives from the network layer to be transmitted as frames on the network. It converts network layer protocols into bits of information for networking technologies such as Ethernet and Token Ring. This layer has two sublayers: LLC and MAC.
Data Link Layer 2 - OSI Model
Topologies are define by the physical characteristics of the network media (cables, connectors, modems, and hubs).
Physical Layer 1 - OSI Model
Services that are used with end user applications.
Application Layer 7 - OSI Model
SMTP
Application Layer 7 - OSI Model
Formats the data so that it can be viewed by the user. Encrypts and Decrypts.
Presentation Layer 6 - OSI Model
JPG, GIF, HTTPS, SSL, TLS
Presentation Layer 6 - OSI Model
Establishes/ends connections between two hosts.
Session Layer 5 - OSI Model
NetBIOS, PPTP
Session Layer 5 - OSI Model
Responsible for the transport protocol and error handling.
Transport Layer 4 - OSI Model
TCP, UDP
Transport Layer 4 - OSI Model
Reads the IP address from the packet.
Network Layer 3 - OSI Model
Reads the MAC address from the data packet.
Data Link Layer 2 - OSI Model
switches
Data Link Layer 2 - OSI Model
Sends data on to the physical wire.
Physical Layer 1 - OSI Model
Hubs, NICs, Cables
Physical Layer 1 - OSI Model
Layer of the TCP/IP model that corresponds to the Transport Layer of the OSI Model.
Host-to-Host
The application layer of the TCO/IP model corresponds to which OSI model layer(s)?
Application, Presentation, and Session layers of the OSI model
The Internet layer of the TCP/IP model corresponds to which OSI model layer?
Network layer of the OSI model
At which layer does the IP, ARP, and ICMP operate in the OSI model?
The Internet Layer.
The Network access layer of the TCP/IP model corresponds to which layer(s) of the OSI model?
Data-Link and Physical layers.
How many layers does the OSI model have?
Seven
How many layers does the TCP/IP model have?
Four
Router, Layer 3 Switchers
Network Layer 3 - OSI Model
Portal to network-based services such as determining the identity and availability of remote applications. When an application or OS transmits or receives data over a network, it uses the services from this layer. The protocols at this layer are: HTTP, FTP, SMTP, TSL/SSL, and RADIUS.
Application Layer 7 - OSI Model
Provides reliable connection between peer hosts. Creates the session and ends the session when the host is done. It has three modes: Full duplex, half-duplex, and simplex.
Session Layer 5 - OSI Model
Seven Layers of the OSI Model
7) Application, (6) Presentation, (5) Session, (4) Transport, (3) Network, (2) Data Link, and (1) Physical
