[Fall,
2014] ASSIGNMENT
PROGRAM - Master of Science in Information
Technology (MSc IT)
SEMESTER - 2
SUBJECT CODE & NAME - MIT204– Data
Communication & Networking
CREDIT –
4 BK ID - B1389 MAX. MARKS - 60
Get fully solved assignment, plz drop a mail with your sub code
computeroperator4@gmail.com
Charges for mba rs 125/subject and rs 700/semester only.
For other rs 125/subject only
if urgent then call us
on 08791490301, 08273413412
Q1.
a) Give
the classification of computer network.
b)
Mention the advantages of a linear bus topology.
Answer:
a.
A computer
network is a system for communication among two or more computers. Computer
networks can be categorized by
range, functional relationship, network topology and specialized function.
By range
Q2. Write
about transmission impairments.
Answer:
Analog signal
consist of varying a voltage with time to represent an information steam. If
the transmission media were perfectly, the receiver could receive exactly the
same signal that the transmitter sent. But communication lines are usually not
perfect, so the receive signal is not the same as the transmitted signal. For
digital data this difference can lead to errors. Transmission lines suffers
from three major problems
Q3 Explain
a) Character stuffing b) bit stuffing [5+5] 10
Answer:
a)
Character stuffing
This method
gets around the problem of synchronization after an error by having each frame
start and end with special bytes. This method operates on bytes. The special
bytes are reserved characters to indicate the start and end of a frame. A
serious problem occurs when binary data like floating point numbers or object
programs are transmitted. In such cases For instance, use the two-character
sequence DLE STX (Data-Link Escape, Start of Text) to signal the beginning of a
frame, and the sequence DLE ETX
Q4.Write a note on Point-to-Point
Protocol (PPP).
Answer:
PPP (Point-to-Point Protocol)
is a protocol for communication between two computers using a serial interface,
typically a personal computer connected by phone line to a server. For example,
your Internet server provider may provide you with a PPP connection so that the
provider's server can respond to your
Q5. Explain
the following
a)
Class A networks
b)
Class B networks [5+5] 10
Answer:
Class A
networks
Each Class A
network address has an 8-bit network-prefix with the highest order bit set to 0
and a seven-bit network number, followed by a 24-bit host-number. Today, it is
no longer considered 'modern' to refer to a Class A network. Class A networks
are now referred to as "/8s" (pronounced "slash eight" or
just
Q6.Explain
the following.
a) Open
loop congestion control
b)
Closed loop congestion control
Answer: Open
Loop Congestion Control
• In this
method, policies are used to prevent the congestion before it happens.
• Congestion
control is handled either by the source or by the destination.
• The
various methods used for open loop congestion control are:
1. Retransmission Policy
• The sender
retransmits a packet, if it feels that the packet it has sent is lost or
corrupted.
Q7. List
the various categories of network security problems. Explain any two.
Answer: Network security problems
can be divided roughly into four categories:
1) Secrecy:
2) Authentication
3) Non-repudiation
4) Integrity control
1) Secrecy: It is also called confidentially. It has
to do with keeping information out of hands of unauthorised users.
2) Authentication: It deals with determining who the
destination or recipient is before revealing sensitive information or entering
into a business deal.
Get fully solved assignment, plz drop a mail with your sub code
computeroperator4@gmail.com
Charges for mba rs 125/subject and rs 700/semester only.
For other rs 125/subject only
if urgent then call us
on 08791490301, 08273413412
No comments:
Post a Comment