Saturday, August 20, 2011

ENetwork Chapter 2

Which three statements best describe a Local Area Network (LAN)? (Choose three.)
  •     A LAN is usually in a single geographical area.
  •     The network is administered by a single organization.
  •     A LAN provides network services and access to applications for users within a common organization.
What are two functions of encapsulation? (Choose two.)
  •     identifies pieces of data as part of the same communication
  •     ensures that data pieces can be directed to the correct receiving end device

What is a primary function of the trailer information added by the data link layer encapsulation?
  •     supports error detection

Refer to the exhibit. "Cell A" at IP address has established an IP session with "IP Phone 1" at IP address Based upon the graphic, which device type best describes the function of wireless device "Cell A?"
  •     an end device

Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three.)

Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)
  •     Physical
  •     Data Link
What is the purpose of the TCP/IP Network Access layer?
  •     the division of segments into packets


Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?
  •     multiplexing
What can be identified by examining the network layer header?
  •     the destination host address
Select the statements that are correct concerning network protocols. (Choose three.)
  •     define the structure of layer specific PDU's
  •     outline the functions necessary for communications between layers
  •     require layer dependent encapsulations

Refer to the exhibit. Which term correctly identifies the device type that is included in the area B?
  •    intermediary

Which statements correctly identify the role of intermediary devices in the network? (Choose three.)
  •     determine pathways for data
  •     retime and retransmit data signals
  •     manage data flows

Refer to the exhibit. What type of network is shown?
  •     LAN
What is the primary purpose of Layer 4 port assignment?
  •     to identify the processes or services that are communicating within the end devices

During the encapsulation process, what occurs at the data link layer?
  •     The physical address is added.
What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?
  •     application, presentation, session, transport, network, data link, physical

Refer to the exhibit. Which set of devices contains only end devices?
  •     E, F, H, I, J

What is a PDU?
  •     a layer specific encapsulation

Which layer encapsulates the segment into packets?
  •     network
Which characteristic correctly refers to end devices in a network?
  •     originate data flow

What device is considered an intermediary device?
  •     switch

3 komentar:

DPY said...

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Anonymous said...

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Anonymous said...

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