MI0035 – COMPUTER NETWORKS

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ASSIGNMENT

DRIVE	SUMMER 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. a. Discuss computer networks categorically.

Answer:A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices exchange data with each other along network links (data connections). The connections between nodes are established using either cable media or wireless media. The best-known computer network is the Internet.

Network computer devices that originate, route and terminate the data are called network nodes.[1] Nodes can include hosts such as personal computers, phones, servers as well as networking hardware. Two such devices can be said to be

b. Define Network protocols. What are the various types of computer network?

Answer:Network congestion occurs when a link or node is carrying so much data that its quality of service deteriorates. Typical effects include queueing delay, packet loss or the blocking of new connections. A consequence of these latter two is that incremental increases in offered load lead either only to small increase in network throughput, or to an actual reduction in network throughput.

Q. 2. Explain the following terms:

a. Video Compression

Answer:Video compression uses modern coding techniques to reduce redundancy in video data. Most video compression algorithms and codecs combine spatial image compression and temporal motion compensation. Video compression is a practical implementation of source coding in information theory. In practice, most video codecs also use audio compression techniques in parallel to compress the separate, but combined data streams as one package.

b. Audio Compression

Answer:Audio data compression, as distinguished from dynamic range compression, has the potential to reduce the transmission bandwidth and storage requirements of audio data. Audio compression algorithms are implemented in software as audio codecs. Lossy audio compression algorithms provide higher compression at the cost of fidelity and are used in numerous audio applications. These algorithms almost all rely on psychoacoustics to eliminate less audible or meaningful sounds, thereby reducing the

Q. 3. Discuss the features of the Bluetooth technology and how they all make it work.

Answer:Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz]) from fixed and mobile devices, and building personal area networks (PANs). Invented by telecom vendor Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization.  Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more

Q. 4. Explain the network configuration of Dense wavelength division multiplexing (DWDM) and its pros and cons.

Answer:Dense wavelength division multiplexing (DWDM) is wavelength division multiplexing (WDM) with typical channel spacing of 100 GHz for 40 channels and 50 GHz for 80 channels. Each channel contains a TDM (time division multiplex) signal. And each of up to 80 channels can carry 2.5 Gbps for a total of 200 billion bits per second by the optical fiber. These signals use the 3rd transmission window, called the C-Band, meaning the light beam

Q. 5. Shed light on User-to-network and Network-to-network connectivity and the technologies used.

Answer:A wireless network is any type of computer network that uses wireless data connections for connecting network nodes.  Wireless networking is a method by which homes, telecommunications networks and enterprise (business) installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations. Wireless telecommunications networks are generally implemented and

Q. 6. What are the benefits and drawbacks of Cloud computing?

Answer:There is no doubt that businesses can reap huge benefits from cloud computing. However, with the many advantages, come some drawbacks as well. Take time to understand the advantages and disadvantages of cloud computing, so that you can get the most out of your business technology, whichever provider you choose.

Advantages of Cloud Computing

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