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  • Publicado : 28 de septiembre de 2010
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1
What are the key functions of encapsulation? (Choose three.)
allows modification of the original data before transmission
identifies pieces of data as part of the same communication
enablesconsistent network paths for communication
ensures that data pieces can be directed to the correct receiving end device
enables the reassembly of complete messages
tracks delay between end devices2
Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)
Network
Transport
Physical
Data Link
Session

3
According to the OSI model,FTP, TFTP, Telnet, and HTTP are used to check connectivity up to which layer?
Network
Transport
Session
Presentation
Application

4
What is true of data as it flows across the internetwork?(Choose three.)
A single email transaction segmented into multiple packets will take the same path across a WAN from source to destination.
Overhead is used to notify devices on a network that errorshave been detected in data transmission.
Path selection is important for optimizing data flow and increasing performance.
Managing data flow and regulating traffic types is handled by intermediarydevices.
Application data is altered as network devices analyze and determine the best path to the destination.
End devices such as hubs and routers are used to originate the flow of data.

5Which devices connect individual hosts to the network and can connect multiple individual networks to form an internetwork? (Choose three.)
communication server
firewall
network printer
PDA
routerVoIP phone

6
What are the primary functions of the header and trailer information resulting from encapsulation? (Choose three.)
prevent data from being captured or altered
assist intermediarydevices with processing and path selection
uniquely identifies source and destination devices
ensure ordered arrival of data
assist intermediary devices with the modification of data
manage error...
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