Computer Network Mcqs

Page No. 6

Wireless transmission of signals can be done via ___________


aradio waves


bmicrowaves


cinfrared


dall of the mentioned


View Answer all of the mentioned

A single channel is shared by multiple signals by ____________


aanalog modulation


bdigital modulation


cmultiplexing


dphase modulation View Answer


View Answer multiplexing

The physical layer translates logical communication requests from the ______ into hardware specific operations.


adata link layer


bnetwork layer


ctrasnport layer


dapplication layer


View Answer data link layer

The physical layer is responsible for __________


aline coding


b channel coding


cmodulation


d all of the mentioned



In asynchronous serial communication the physical layer provides ___________


astart and stop signalling


bflow control


cboth start & stop signalling and flow control


donly start signalling



The physical layer provides __________


amechanical specifications of electrical connectors and cables


b electrical specification of transmission line signal level


cspecification for IR over optical fiber


d all of the mentioned



The portion of physical layer that interfaces with the media access control sublayer is called ___________


a physical signalling sublayer


bphysical data sublayer


cphysical address sublayer


dphysical transport sublayer



Bits can be sent over guided and unguided media as analog signal by ___________


adigital modulation


bamplitude modulation


cfrequency modulation


d phase modulation


View Answer digital modulation

Which transmission media provides the highest transmission speed in a network?


acoaxial cable


btwisted pair cable


coptical fiber


d electrical cable


View Answer optical fiber

The physical layer is concerned with ___________


abit-by-bit delivery


bprocess to process delivery


capplication to application delivery


dport to port delivery


View Answer bit-by-bit delivery

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