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1. Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
“ help.mbaassignments@gmail.com ”
or
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ASSIGNMENT
DRIVE SPRING 2015
PROGRAM MBADS (SEM 3/SEM 5)MBAFLEX/ MBA (SEM 3)
PGDISMN (SEM 1)
SUBJECT CODE & NAME MI0035 – COMPUTER NETWORKS
BK ID B1973
CREDITS 4
MARKS 60
Note: Answer all questions. Kindly note that answers for 10 marks questions should be
approximately of 400 words. Each question is followed by evaluation scheme.
Q. 1. Explain the working of Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
Protocol.
Answer:CarrierSense Multiple AccessWithCollisionDetection(CSMA/CD) is a media access control
methodusedmostnotablyinlocal areanetworkingusingearlyEthernettechnology.It uses a carrier
sensingscheme inwhichatransmittingdatastationdetectsothersignalswhiletransmittingaframe,
and stopstransmittingthatframe,transmitsajam signal,and then waits for a random time interval
before trying to resend the frame.
CSMA/CD is a modification of pure carrier sense multiple access (CSMA). CSMA/CD is used to
improve CSMA performance by terminating
2. Write short notes on
a. Coaxial Cables
Answer: Coaxial cable is called "coaxial" because it includes one physical channel that carries the
signal surrounded(afteralayerof insulation) by another concentric physical channel, both running
alongthe same axis. The outer channel serves as a ground. Many of these cables or pairs of coaxial
tubescan be placedina single outersheathingand,withrepeaters,cancarry informationfora great
distance.

2. b. Satellite
Answer: Inthe context of spaceflight, a satellite is an artificial object which has been intentionally
placed into orbit. Such objects are sometimes called artificial satellites to distinguish them from
natural satellites such as the Moon.
The world's first artificial satellite, the Sputnik 1, was launched by the Soviet Union in 1957. Since
then, thousands of satellites have been launched into orbit around the Earth. Some satellites,
notably space stations, have been launched in
c. Microwave
Answer: The term microwave refers to electromagnetic energy having a frequency higher than 1
gigahertz(billionsof cyclespersecond), corresponding to wavelength shorter than 30 centimeters.
Microwave signals propagate in straight lines and are affected very little by the troposphere. They
are notrefractedor reflectedbyionizedregionsinthe upperatmosphere.Microwave beams do not
readily diffract around
d. Value-added Network
Answer: A value-added network (VAN) is a private network provider (sometimes called a turnkey
communications line) that is hired by a company to facilitate electronic data interchange (EDI) or
provide othernetwork services. Before the arrival of the World Wide Web, some companies hired
value-addednetworkstomove datafromtheircompanyto othercompanies.With the arrival of the
World Wide Web,
e. Web EDI
Answer: WebEDI is a web-basedEDIsubscriptionservice thatprovidessupplierswithaneasy-to-use
and cost effective solution for processing EDI documents using a web browser and internet
connection.
For inboundEDIdocuments,suchas purchase orders,Web EDI provides readable reports of the EDI
data. For outbound

3. Q. 3. Write short notes on
a. Subnet:A subnetwork,orsubnet,isalogical, visible subdivision of an IP network. The practice of
dividing a network into two or more networks is called subnetting. Computers that belong to a
subnet
b. Super netting:A supernetwork, or supernet, is an Internet Protocol (IP) network that is formed
fromthe combinationof twoormore networks(orsubnets) with a common Classless Inter-Domain
Routing(CIDR) prefix.The newrouting prefix for the combined network aggregates the prefixes of
the
c. Subnet masks: A Subnet mask is a 32-bit number that masks an IP address, and divides the IP
addressintonetworkaddress and host address. Subnet Mask is made by setting network bits to all
"1"s and setting
d. Dynamic NAT: DynamicNATisatype of NATin whicha private IPaddress is mapped to a public IP
address drawing from a pool of registered (public) IP addresses. Typically, the NAT router in a
network will
e. Domain Name System:The Domain Name System (DNS) is a hierarchical distributed naming
system for computers, services, or any resource connected to the Internet or a private network. It
associates various information with domain names assigned to each of the participating entities.
Most prominently, it translates domain names, which can be easily memorized by humans, to the
numerical IP
Q. 5. Briefly explain the networking applications in government sector
Answer:Whenwe speakof applications, we simplymeanthe things a computer or other tool can be
usedfor. You are familiar with many applications, like word processing, email, Web browsing, and
spreadsheet processing.
Objectives:We candistinguishbetween network and stand-alone applications. For example, if you
use Microsoft Word to write a letter and save
Q. 6. Explore the different models in cloud environment and their examples
Answer: Infrastructure as a Service: In the most basic cloud-service model & according to the IETF
(Internet Engineering Task Force), providers of IaaS offer computers – physical or (more often)

4. virtual machines –and otherresources.(A hypervisor,suchasXen,Oracle VirtualBox,KVM,VMware
ESX/ESXi, or Hyper-V runs the virtual machines as guests. Pools of hypervisors within the cloud
operational support-system can support large numbers of virtual machines and the ability to scale
services up and down according to
Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
“ help.mbaassignments@gmail.com ”
or
Call us at : 08263069601