MI0035 – COMPUTER NETWORKS

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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:Carrier Sense Multiple Access With Collision Detection (CSMA/CD) is a media access control method used most notably in local area networking using early Ethernet technology. It uses a carrier sensing scheme in which a transmitting data station detects other signals while transmitting a frame, and stops transmitting that frame, transmits a jam 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 (after a layer of insulation) by another concentric physical channel, both running along the same axis. The outer channel serves as a ground. Many of these cables or pairs of coaxial tubes can be placed in a single outer sheathing and, with repeaters, can carry information for a great distance.

b. Satellite

Answer: In the 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 (billions of cycles per second), corresponding to wavelength shorter than 30 centimeters.

Microwave signals propagate in straight lines and are affected very little by the troposphere. They are not refracted or reflected by ionized regions in the upper atmosphere. 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 other network services. Before the arrival of the World Wide Web, some companies hired value-added networks to move data from their company to other companies. With the arrival of the World Wide Web,

e. Web EDI

Answer: Web EDI is a web-based EDI subscription service that provides suppliers with an easy-to-use and cost effective solution for processing EDI documents using a web browser and internet connection.

For inbound EDI documents, such as purchase orders, Web EDI provides readable reports of the EDI data. For outbound

Q. 3. Write short notes on

a. Subnet:A subnetwork, or subnet, is a logical, 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 from the combination of two or more networks (or subnets) with a common Classless Inter-Domain Routing (CIDR) prefix. The new routing 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 address into network address and host address. Subnet Mask is made by setting network bits to all "1"s and setting

d. Dynamic NAT: Dynamic NAT is atype of NAT in which a private IP address 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:When we speak of applications, we simply mean the things a computer or other tool can be used for. You are familiar with many applications, like word processing, email, Web browsing, and spreadsheet processing.

Objectives:We can distinguish between 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) virtual machines – and other resources. (A hypervisor, such as Xen, 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 :

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Call us at : 08263069601