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# Assignment No 2 Data communication (CS601) Solution and Discussion Spring 2014 Due Date: May 29, 2014

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Assignment :

Question 1:   (5 Marks)

Identify the TCP/IP layer against each of the protocols given in the

following table:

 Protocols TCP/IP Layers ICMP TCP SMTP UDP IP

Question 2: (5 Marks)

In Dolphins, the audible range of frequencies is usually 1000 to 130,000

Hz. You have to calculate the bit rate of upper limit assuming 6 bits

per sample.

Question 3: (10 Marks)

You are required to represent the data stream 1010001110 using the

following encoding schemes on different graphs separately.

• Manchester
• Differential Manchester

Deadline: Your assignment must be uploaded/submitted on or before 29th May 2014.

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### Replies to This Discussion

Our main purpose here discussion not just Solution

We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions.

Plz can you tell me that how to draw manchester graph on MS-word plz tell me

how to draw chart in ms office its not happening

In data transmission Manchester encoding is a method of transmitting bits that allows the receiver to easily synchronize with the sender. Manchester encoding splits each bit period into two, and ensures that there is always a transition between the signal levels in the middle of each bit. In Manchester encoding "1" is transmitted as 0 in the first half of the clock and 1 in the second half of the clock. And "0" is transmitted as 1 in the first half of the clock and 0 in the second half of the clock

Differential Manchester encoding is a line code in which data and clock signals are combined to form a single 2-level self-synchronizing data stream. It is a diferential encoding, using the presence or absence of transitions to indicate logical value. It is not necessary to know the polarity of the sent signal since the information is not kept in the actual values of the voltage but in their change: in other words it does not matter whether a logical 1 or 0 is received, but only whether the polarity is the same or different from the previous value; this makes synchronization easier

Bro can you tell me how to make graph for 101000110 as im unable to do for diff. manch. encoding.

ICMP is providing a mechanism for any IP device to send control messages to another device.

TCP is a is a connection oriented protocol that enables two machines which are communicating to control the status of the transmission.

SMTP (single mail transfer protocol) defining the electronic mail service on the internet.

IP (Internet Protocol) is the network layer protocol  suite governing connectionless transmission across packet-switching networks.

Question 1:   (5 Marks)

Identify the TCP/IP layer against each of the protocols given in the following table:

 Protocols TCP/IP Layers ICMP Network TCP Transport SMTP Application UDP Transport IP Network

Umer Jalil Mansoor, well done, keep it up

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