Question

25. A reduction in strength as signal is transmitted from source to destination is referred to attenuation 26. In simplex communication, transmission signals are transmitted in both directions 27. The peak amplitude is the maximum value or strength of the signal over time; typically, this value is measured in volts. 28. The Spectrum of a signal is the range of frequencies that it contains. 29. The place where telephone companies terminate customer lines and locate switching equipment to interconnect those lines with other networks is the called NAP 30. Gateway-Device that nodes use for access to other PC' s within the same network 31. Total number of IP addresses in a Class B network is 22

Answer 1

25. True : Reduction in strength is called attenuation

26. False. Simplex is one direction communication. Duplex is both ways.

27. False. Actually partially true. Amplitude means strength but unit may be anything depending on signal. For voltage it is volts.

28. True. It shows the graph of Fourier transform.

29. False. It is called Network interface device or NID.

30. True. They are used as communication media in computer networks.

31. False. It should be 2¹⁴ .