Friday, 19 January 2018


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FALL 2017

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.

Question.1. Elaborate the concept of computer networks. Briefly explain the different types of networks.

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

Question.2. Write Short notes on:

a) Connectors

Answer:An electrical connector, is an electro-mechanical device used to join electrical terminations and create an electrical circuit. Electrical connectors consist of plugs (male-ended) and jacks (female-ended). The connection may be temporary, as for portable equipment, require a tool for assembly and removal, or serve as a permanent electrical joint

b) PC Cards

Answer:In computing, PC Card is a configuration for computer parallel communication peripheral interface, designed for laptop computers. Originally introduced as PCMCIA, the PC Card standard as well as its successors like CardBus were defined and

c) Hubs

Answer:A hub is a common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Hubs and switches serve as a central connection for all

d) Bridges

Answer:When referring to computers, a bridge is a device that connects two local-area networks (LANs), or two segments of the same LAN. Unlike a router, bridges are protocol -independent. They forward packets without analyzing and re-routing messages.

A network bridge is a computer networking device that creates a single aggregate network from multiple communication networks or network segments. This function is called network bridging. Bridging is distinct from routing, which allows multiple different networks to communicate independently while remaining separate. In the OSI model, bridging is performed in the first two layers, below the network layer (layer 3

Question.3. Explain the Elements of Communication System. Elaborate on Modulation/Demodulation(Modem)

Answer:The purpose of a communication system is to transmit intelligence signal from a source to a destination at some point away from the source. Figure 1 is a block diagram of a communication system. This system consists three basic components: transmitter, channel, and receiver.

Question.4. Identify and explain the five types of classes of IP Address. Also write few points on Privateand Public IP Addresses.

Answer:IP address classes

1st Octet Decimal Range
1st Octet High Order Bits
Network/Host ID (N=Network, H=Host)
Default Subnet Mask
Number of Networks
Hosts per Network (Usable Addresses)
1 – 126*
126 (27 – 2)
16,777,214 (224 – 2)

Question.5. Briefly discuss concept of Network Management Tools and Applications.

Answer:The Network Management toolset of the OpUtils software monitors network performance, calculates the bandwidth utilization, and scans the traffic for errors through SNMP. The tool also provides asset details such as the OS, installed software, and hardware and informs you about the general availability and performance of the network

Question.6. Explain the Working, benefits and limitations of Cloud Computing.

Answer:Cloud computing is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand. It is a model for enabling ubiquitous, on-demand access to a shared pool of configurable computing resources (e.g., computer networks, servers, storage, applications and services), which can be rapidly provisioned and released with minimal management effort. Cloud computing and storage solutions provide users and enterprises with various capabilities to store and process their data in either privately owned, or third-party data centers that may be located far from the
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