INMT 543 Exam 2 Questions and
Answers
Open System Interconnect (OSI) Model - Answer-Data is passed through seven layers. Each layer adds a
header and sends to the next level. The next application level then strips the header.
Seven OSI Layers - Answer-Application, Presentation, Session, Transport, Network, Datalink, Physical
Application - Answer-Provides network services to user applications. Ex: web server (oscar.utk.edu)
Session - Answer-Communication with another device. Also sets up, manages, and ends communication
between apps
Presentation - Answer-Converts presentation data for incoming and outgoing data. deals with the
syntax of the data
Transport - Answer-Take data and break it into pieces, preparing it to send over the network
Network - Answer-Where you see the IP software address. They transmit easily and are everywhere
, Datalink - Answer-Adds a hardware address. Ex: every stop that the mail needs to take. Ex: what
network card uses either wifi or ethernet
Physical - Answer-How data is transported. Ex: radio waves, fiberoptics, microwaves
Transport Layer - Answer-Host to Host Ex: PC --> Server
Internet Layer - Answer-PC --> Router 1 --> Router 2 --> Server
Ports - Answer-Unique application/service that send and receive data. Can range from 0 - 65,356
TCP Segment - Answer-Shows data in a stack. Does not lose data and check to make sure recipient gets
all data. Checksum helps with integrity of data.
UDP Datagram - Answer-All you get is port #s. Adds little data and it can be lost. Ex: netflix with bad
resolution
Internet Protocol (IP) Packet - Answer-IP addresses are added as software addresses
Ethernet Frame (Packet) - Answer-Lowest level. It is sent out over the network. MAC addresses are
always visible.
Network Devices - Answer-Hub, Bridge, Switch, Router, Gateway
Hub (Physical) - Answer-Extends the network at a physical layer
Bridge (Datalink) - Answer-Datalink layer that can convert ethernet into wifi
Answers
Open System Interconnect (OSI) Model - Answer-Data is passed through seven layers. Each layer adds a
header and sends to the next level. The next application level then strips the header.
Seven OSI Layers - Answer-Application, Presentation, Session, Transport, Network, Datalink, Physical
Application - Answer-Provides network services to user applications. Ex: web server (oscar.utk.edu)
Session - Answer-Communication with another device. Also sets up, manages, and ends communication
between apps
Presentation - Answer-Converts presentation data for incoming and outgoing data. deals with the
syntax of the data
Transport - Answer-Take data and break it into pieces, preparing it to send over the network
Network - Answer-Where you see the IP software address. They transmit easily and are everywhere
, Datalink - Answer-Adds a hardware address. Ex: every stop that the mail needs to take. Ex: what
network card uses either wifi or ethernet
Physical - Answer-How data is transported. Ex: radio waves, fiberoptics, microwaves
Transport Layer - Answer-Host to Host Ex: PC --> Server
Internet Layer - Answer-PC --> Router 1 --> Router 2 --> Server
Ports - Answer-Unique application/service that send and receive data. Can range from 0 - 65,356
TCP Segment - Answer-Shows data in a stack. Does not lose data and check to make sure recipient gets
all data. Checksum helps with integrity of data.
UDP Datagram - Answer-All you get is port #s. Adds little data and it can be lost. Ex: netflix with bad
resolution
Internet Protocol (IP) Packet - Answer-IP addresses are added as software addresses
Ethernet Frame (Packet) - Answer-Lowest level. It is sent out over the network. MAC addresses are
always visible.
Network Devices - Answer-Hub, Bridge, Switch, Router, Gateway
Hub (Physical) - Answer-Extends the network at a physical layer
Bridge (Datalink) - Answer-Datalink layer that can convert ethernet into wifi
