Difference between IP and Network Access Layer in TCP Protocol

Prime Minister
Translator
Telephone Telephone
Translator
Prime Minister
Chinese Prime
Minister
Chinese Translator
English Translator English Translator
French Translator
French Prime
Minister
1. Describe the difference between IP and Network Access layer in TCP protocol and also
explain the control information embedded in these two layers.
 Network access layer is a combination of data link and physical layer, whereas, IP
layer is a network layer.
 First layer of the four layer TCP/IP model is the Network access layer, whereas,
IP layer is the second layer of the four layer TCP/IP model.
 The protocols included in Network access layer are Ethernet, Token Ring, FDDI,
X.25, etc, whereas, the protocols included in IP layer are internet control message
protocol (ICMP), address resolution protocol (ARP), internet group management
(IGMP), and reverse address resolution protocol (RARP).
 Network access layer is responsible for placement of data on the medium through
host, whereas, IP layer is responsible for routing of IP data grams.
 Network access layer defines the details of how the data is physically sent through
the network with the help of cables like coaxial cable, optical fiber and twisted
pair copper wire, whereas, the IP layer directs the host to insert data packets into
required network and to deliver them independently to the destination.
2. The French and Chinese prime ministers need to come to an agreement by telephone, but
neither speaks the other’s language. Further, neither has on hand a translator that can
translate to the language of the other. However, both prime ministers have English
translators on their staffs. Draw a diagram similar to Figure 1 to depict the situation, and
describe the interaction and each level.
Telephone line
Telephone line

 Chinese prime minister will talk to the Chinese translator via Chinese, and the Chinese
translator will talk to English translator.
 French prime minister will talk to the French translator via French, and the French
translator will talk to English translator.
 English translators from the both the sides will talk with each other in English through
the telephone.
3. From the following figures, compute the maximum amplitude, frequency, time period
and phase for each of the wave. The x-axis represents the time in sec and y-axis
represents the amplitude.
Amplitude: the height from center line to the crust or trough is called the amplitude. In
other words, the magnitude of wave is called the amplitude.
Time period: the distance between 2 troughs or crusts is the time period. In other words,
time the wave takes to complete one cycle.
Frequency: it is inversely proportional to the time period. Total number of waves passing
through a specific point is called the frequency.
Phase: phase is nothing but the angle. Phase shift is how far the function or wave shifted
from the center point. Mainly there are 2 types of shifts. Horizontal and vertical shifts.
Horizontal shift is how far the function or wave shifted horizontally from the center
point.
Vertical shift is how far the function or wave shifted vertically from the center point.
a.

Amplitude 15
Frequency 333.33
Time period 3
Phase 0
b.
Amplitude 4
Frequency 142.85
Time period 7
Phase 0
c.
Amplitude 7.8
Frequency 500
Time period 2
Phase 90

4. Compute the amplitude, frequency, time period and phase for each of the following
equations and also draw their respective waveforms.
a. 3𝑆𝑖𝑛(2𝜋(200)𝑡)
=3cos (2𝜋 (200) 𝑡-90)
Amplitude 3
Frequency 200
Time period 5
Phase -90
b. 14𝑆𝑖𝑛(2𝜋(50)𝑡 + 90)
=14cos (2𝜋 (50) 𝑡)
Amplitude 14
Frequency 50
Time period 20
Phase 0