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Network Architecture & Networks
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According to the Basic Reference Model we can state:
No P.D.U. is related to any layer.
The S.D.U. of a certain layer is not related to any P.D.U.
The P.D.U. of a certain layer is the S.D.U. of the previous higher layer.
The P.D.U. of a certain layer is the S.D.U. of the previous lower layer.
Clear selection
What is the goal of the transport layer?
The main function of this layer is to manage the transmission process through the different physical means which the message is due to pass through.
The main function of this layer is to allow the interconnection between different nets and to enroute data without dependence from the number of devices the data should pass through.
Its three main functions are: to adapt the information to the different operating systems, the encryption, and the data compression.
Its target is to follow communications between applications running in the sender node and in the receiver node.
Clear selection
Each network card has a unique identifier called:
IP address in the PC's and MAC address in the Apple Machintosh devices.
Gateway address.
MAC address.
IP address.
Clear selection
Which type of topology has a network with all the devices connected to a switch in charge of delivering the information?
Bus.
Ring.
Star.
Mesh.
Clear selection
Write in capital letters the name of the seven layers of the O.S.I. Model.(separate each layer name by a space " " and write them in order from the top to the bottom of the layers)
Your answer
A VPN is:
A private access net as the result of the interconnection of several private nets through a public net.
A public net with individual virtual access.
A Virtual Personal Network
A private net that can connect to a public net virtually.
Clear selection
GRUPO (1ºA, o 1ºB, o, 1ºD, o 1ºE, o 1ºF)
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Your answer
When a computer is connected to a network it is assigned an IP address. Which one of the following addresses could not be an IP address?
10.0.126.2
192.250.0.18
192.168.300.253
10000001.11101000.11010001.00111001
Clear selection
What is your name? (first of all write your surname and later your name)
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Your answer
Regarding a router we could state:
A router interconnects nets if they are based on the same technology and work with the same protocol.
A router interconnects nets regardeless their technology but only if they use the same protocol.
A router does not interconnect nets. They look for the best route only.
A router interconnects nets regardeless their technology and the communication protocol they work with.
Clear selection
Which layers of the Seven Layers Model correspond to the Sub-network of the T.C.P./I.P protocol architecture?
Physical and Data Link layers.
Application layer and Session layers.
Physical Data Link and Transport layers.
Transport and Network layers.
Clear selection
Which one of the following nets is the biggest one?
A MAN
A CAN
A LAN
A WAN
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