D315 OSI Layer Flashcards

Application Layer

Application software, network applications.

Anything you can see with your eyeballs like

web browsers and email.

Application Layer

HTTP and FTP are used as protocols

Presentation Layer

Data conversion utilities. Protocol

Conversion, data translation.

Presentation Layer

Data encryption/decryption is done here.

Presentation Layer

The layer that handles character encoding.

Session Layer

Network Operating System. Establishes, manages & terminates sessions are physical components/functions of this layer.

Session Layer

NFS and SQL are protocols used at this layer.

Physical Layer

The layer where everything begins and ends on the network.

Session Layer

PPTP and SCP (tunneling) are protocols used at this layer.

Session Layer

The layer that uses control protocols and tunneling protocols

Session Layer

NetBIOS and PAP are protocols used at this layer.

Physical Layer

Physical NICs are protocols used at this layer.

Network Layer

The "routing" layer.

Physical Layer

The layer that is a signal that transports traffic across the network.

Transport Layer

Segments are the unit at this layer.

Network Layer

Layer responsible for fragmenting data with frames.

Transport Layer

Network Operating System. Ensures Error Free Packets. The physical component/function of this layer.

Network Interface Card

NIC stands for

Transport Layer

TCP (segments so no missing packets), UDP (datagrams for streaming like games), and SCTP are protocols used at this layer.

Network Layer

Packets are the unit of this layer.

Physical Layer

The layer that deals with Fiber and Cables

Transport Layer

The "post office" layer.

Data Link Layer

ARP, PPP, HDLC, and LLC are some of the protocols used by this layer.

Data Link Layer

The layer that is the "language" of the network.

Network Layer

Provides routing decisions. NAT, PAT

Data Link Layer

The "switching" layer.

Network Layer

IP, IPX, IPSec, RIP, IPv4, IPv6, ICMP

Data Link Layer

Frames

Transport Layer

The layer that transports segments of data across the network

Data Link Layer

The layer that sees the MAC addresses of the source and destination of network traffic.

Application Layer

Network applications are a physical component/function of this layer.

Data Link Layer

NIC FUNCTIONS at this layer. Bits pass over physical layer between devices on a LAN (collision domain).

Network Layer

Router and Layer 3 switches.

Presentation Layer

Secure Socket Layer is a protocol at this layer.

Application Layer

The layer a user can see.

Network Layer

The layer that can see the IP addresses of the source and destination of network traffic.

Session Layer

The layer that handles communication management (start, stop, restart)

Data Link Layer

ARP, PPP, HDLC, LLC

Communication at MAC-address level - forwards packets on Layer 2 devices, like a bridge.

Physical Layer

Bits

Physical Layer

Repeater, Modem, Bluetooth, Ethernet, hubs, Network Cabling, Wi-Fi. Signals & Media.

Network Layer

The layer that makes routing decisions.

Presentation Layer

This layer is often combined with the application layer.

Session Layer

The layer that links the Presentation Layer to the Transport Layer

Physical Layer

DSL, ISDN, twisted pair cable, fiber. Questions about "medium" refer to cabling.

Router and Layer 3 switches

Physical components that provide routing decisions and are used by the Network Layer.

Application Layer

Seventh layer of the OSI model

Presentation Layer

Sixth layer of the OSI model

Session Layer

Fifth layer of the OSI model

Physical Layer

The _________________ layer uses Wi-Fi as a component/function.

Transport Layer

Fourth layer of the OSI model

Network Layer

Third layer of the OSI model

Data Link Layer

Second layer of the OSI model

Physical Layer

First layer of the OSI model

TCP/IP Model

Covers the same networking aspects found in the OSI model, but in fewer layers (four). Developed by the Department of Defense.

OSI Model

Acronym for Open Systems Interconnection and has seven layers. Developed by the International Standard Organization.

Application Layer

Fourth layer of the TCP/IP model. Contains three OSI layers: Application, Presentation, and Session.

Transport Layer

Third layer of the TCP/IP model. Contains the Transport OSI layer.

Network Layer

Second layer of the TCP/IP model. Contains the Network OSI layer.

Network Interface Layer

First layer of the TCP/IP model. Contains the Data Link and Physical OSI layers.

Application Layer

Contains message, supports network applications

Presentation Layer

Coding, compression, encryption. Protocol Conversion, data translation.

Session Layer

Aggregates connections for efficiency, synchronization, recovery. Establishes, maintains, terminates connection.

Transport Layer

Ensures error-free packets. Transfers & re-sends messages. Responsible for breaking up data into segments.

Network Layer

Handles routing of datagrams, source to destination. IP addressing takes place. Provides routing decisions. NAT, PAT

Data Link Layer

Aggregates bits to frame and performs data transfer between neighboring network elements. Physical addressing takes place. Provides for flow of data.

Physical Layer

Deals with transmission of bits over copper, fiber, or radio. Physical NICs are here.

A medium

Cabling

Network Layer

_________________ is the OSI layer related to the function of the IP protocol suite.

Data Link Layer

Switches, NIC, Token Ring, Frame Relay, Bridge.

Router

_________________ is a network device that is used to connect two or more network segments by performing OSI layer 3 functions like packet-forwarding.

Data Link Layer

_________________ is the OSI layer responsible for organizing how bits are passed over the physical layer between devices within the same collision domain.

Router

_________________ is responsible for implementing NAT (network address translation)

Transport Layer

_________________ makes sure packets of data are received correctly and resends them if they are not.

File Server

_________________ is used as a shared storage for all member nodes of a LAN.

TCP and UDP

_________________ perform functions of OSI layer 4.

Application Layer

SMIP, IMAP, SMTP

NIC functions

_________________ at the data link by using a unique MAC address.

Physical Layer

802.11 signal

Data Link Layer

OSI layer that provides for flow of data.

Data Link Layer

OSI layer that deals with MAC addresses

Data Link Layer

NIC FUNCTIONS at this layer.

Signals and Media

802.11, Repeater, Modem, Bluetooth, Ethernet, hubs, Network Cabling, Wi-Fi