ISO-OSI-layers

Question 1
The major functions of the presentation layer in OSI stack are :
A
Dialog presentation and control
B
Dealing with differences in data representation, encryption and compression
C
Presenting the full and half duplex services to the user
D
Enabling end to end error control presentation
Computer-NetworksISO-OSI-layersTNPSC-2017-Polytechnic-CS
Question 1 Explanation: 
The main function of presentation layer in OSI are translation, encryption and data compression.
Question 2
In the context of computer networks, which of the following is false?
A
In OSI model, network layer accepts messages from sessions layer and passes it to transport layer
B
Fiber optic devices for transmission have higher bandwidth than copper based devices
C
A set of layers and protocol
D
In the context of network architecture, a service is a set of primitive operations that a layer provides to the layer above it
Computer-NetworksISO-OSI-layersAPPSC-2012-DL-CS
Question 2 Explanation: 
is false.The correct statement will be the transport layer accepts the message from session layer and passes it to the network layer.
Question 3
The function of network layer of OSI model
A
Packet Routing
B
Congestion Control
C
Internetworking
D
All of these
Computer-NetworksISO-OSI-layersAPPSC-2012-DL-CS
Question 3 Explanation: 
All of the given options are the application of network layer of OSI model.Many more applications of network layer includes switching,fragmentation,etc.
Question 4
In which layer of the OSI model, DBMS and email software are found
A
Presentation Layer
B
Transport layer
C
Application Layer
D
Sessional layer
Computer-NetworksISO-OSI-layersAPPSC-2012-DL-CS
Question 4 Explanation: 
Both the end user and the application layer interact with the software applications.
There are 4 questions to complete.

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