Top 150+ Solved Data Communication and Networking MCQ Questions Answer
Q. Which layer links the network support layers and user support layers
a. session layer
b. data link layer
c. transport layer
d. network layer
Q. Which address is used in an internet employing the TCP/IP protocols?
a. physical address and logical address
b. port address
c. specific address
d. all of the mentioned
Q. Which address identifies a process on a host?
a. physical address
b. logical address
c. port address
d. specific address
Q. Transmission data rate is decided by
a. network layer
b. physical layer
c. data link layer
d. transport layer
Q. Physical layer provides
a. mechanical specifications of electrical connectors and cables
b. electrical specification of transmission line signal level
c. specification for IR over optical fiber
d. all of the mentioned
Q. The physical layer translates logical communication requests from the ______ intohardware specific operations.
a. data link layer
b. network layer
c. trasnport layer
d. application layer
Q. A single channel is shared by multiple signals by
a. analog modulation
b. digital modulation
c. multiplexing
d. none of the mentioned
Q. Wireless transmission can be done via
a. radio waves
b. microwaves
c. infrared
d. all of the mentioned
Q. In asynchronous serial communication the physical layer provides
a. start and stop signaling
b. flow control
c. both (a) and (b)
d. none of the mentioned
Q. The physical layer is responsible for
a. line coding
b. channel coding
c. modulation
d. all of the mentioned
Q. Attenuation means
a. loss of energy
b. change in form or shape of a signal
c. crosstalk
d. difference in frequency
Q. If r is the number of data elements carried per signal element, N is the data rate, and S isthe signal rate, then
a. S= N x r
b. S = N/r
c. N = S x r x r
d. None of the above