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Answer: (A) Internet connectivity and bandwidth
Explanation:
The internet connectivity and the bandwidth are the two main factors that are required to play an essential role for accessing the various web apps.
A web application are easily accessible by the internet by means of the web, so availability and transfer speed assume the most significant job in how accessing the application for the client.
By using high internet connectivity, it provide high accessibility to web app for accessing different type of services in the system. It also required high bandwidth for providing the easy accessibility to the web app.
Answer: EMI(Electromagnetic interference)
RFI(Radio frequency interference)
Explanation: Electromagnetic interference is the emission of the electromagnetic signal that can disturb the working of the other device.It invokes the disturbance that can create error, under-performance mechanism,distortion etc in the equipment.
Radio-frequency interference(RFI) is the radio-frequency signal that interferes the other device by creating noise and distortion. This leads to breaking of the operation and data error.
Other options are incorrect because cross talk is referred as undesired communication between signal ,attenuation is the degradation in the amplitude of any signal and extended length of cabling is increasing the length of the cable.Thus the correct answer is RFI and EMI.
Answer:
Device B is Router.
Explanation:
Router is the device that is used to connect different networks to communicate with each other to make possible for all devices of all networks to communicate with each other that are connected to that particular network.
In above case, Device A is 8 port switch that makes a network of 8 different computers. Device C is a 4 port hub that is connected with 4 computers. Both Device A and Device C are different Networks, router is used to connect both all devices of both networks so that they can communicate each other. So the Device B should be router.