subjects4u@gmail.com

1. Spring-2016
Get solved assignments at nominal price of Rs.125 each.
Mail us at: subjects4u@gmail.com or contact at
09882243490
Master of Business Administration- MBA Semester 3
MI0035-Computer Networks
(Book ID: B1973)
Assignment (60 Marks)
Note: Answer all questions must be written within 300 to 400 words each. Each Question carries 10
marks 6 X 10=60
Q1. Explain the concept of computer networks. Briefly explain the different types of networks.
Concept of computer networks - 6
Types of computer networks - 4
Answer. In a general sense “network” refers to a group of objects, individuals connected to each other.
Similarly a cluster of interconnected computers that communicate with one another through a shared
communication link for data exchange is known as a computer network.
A computer network requires two or more individual computers having some data to share. The individual
computers must be connected through a physical pathway called the transmission medium. All the
Q2. Write a brief note on seven layered OSI reference model. Explain the role of each layer.
Define seven layered OSI reference model - 3
Explain the role of 7 layers - 7
Answer. The OSI reference model emerged as a first step towards international standardisation of the
protocols used in the various layers by the ISO. The model is called the ISO OSI reference model as it deals
with connecting open systems, that is, systems open for communication with other systems. An open
system is a set of rules that is used for communication of two different systems (the difference is in their

2. Q3. Write short notes on the following:
a. Subnet
b. Super netting
c. Subnet masks
d. Dynamic NAT
e. Domain Name System
Answer. a. Subnets
A network that exists within the Class A, B, or C network is called a subnet. It can also be defined as a
network within a network. Subnets are created to extend network IDs by using host bits of one or more
Class A, B, or C. Therefore, subnets can have a network ID of any length. All devices that have IP addresses
with same prefix are defined as subnets. These are connected to the Internet by using the same shared
network.
Q4. What is Dense Wavelength Division Multiplexing (DWDM)? What are the pros and cons of DWDM?
Concept of DWDM
Four pros of DWDM
Four cons of DWDM
Answer. DWDM: This refers to a technique that enables more than one wavelength to be added to a
single-mode fiber to increase the capacity of the transmission path by a factor equal to the number of
wavelengths added.
Pros and Cons of DWDM
Apart from
Q5. Explain the working of Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Protocol.
Working of CSMA/CD in a Flowchart
Explain the working in detail
Answer. The CSMA/CD protocol can be compared with a typical life scenario such as a group discussion
during an interview. Suppose several candidates are sitting around the table. Every candidate must listen

3. to the instruction for a while before speaking (Carrier Sense). After listening to the instruction, during a
pause every candidate has an equal chance to participate in group discussion (Multiple Access). In the case
Q6. Briefly explain the functions of network management model.
Answer. Functions of network management model:
Fault Management
The main aim of fault management is to identify the network problems and notify it to the users. The fault
management system, if possible, automatically fixes network problems. Fault management is the most
widely implemented function of the network management systembecause faults frequently occur in a
network. These
Spring-2016
Get solved assignments at nominal price of Rs.125 each.
Mail us at: subjects4u@gmail.com or contact at
09882243490