It beans class 8 th lesson 1 NETWORKING CONCEPTS

Lesson 1:- NETWORKING CONCEPTS

Fill in the blanks:

PANis a computer network created for an individual person.

COMMUNICATIONsystem allows us to talk to any person in the world at any time.

A computer network enables two or more computers to share DATAand hardware RESOURCES.

In a network modification or up gradation of the software or data is done at a SINGLE POINTonly.

The computer that communicate with each other are called NODE.

A network maintained without using wires is called WIRELESS NETWORKING.

LANand MAN rare the different types of networking.

State True or False:

Nodes and servers have the same function.    False

Wi-Fi stands for wireless fidelity.       True

Network cards are used to physically attach a computer to a network. True

WAN stands for Wide Ares networks.            True

In Client Server network, there is no central server.   False

Extranet refers to a computer network restricted to an organization.   False

Multiple Choice Question:

which is the most commonly used network card?

Wi-Fi                        b. Bluetooth                             c. Ethernet Network Card          [C]

The ……. Are the certain sets of rules that determine how data should be transferred over the network.

Protocols                      b. Network cards                       c. Both                                     [A]

What do we call the computers that are connected to the server?

Nodes                       b. laptop                                   c. PC                                        [A]

————– security means protecting data and resources from any unauthorized access

Network                    b. Information                          c. Resources Sharing                 [A]

………………. Is a device that connects wireless communication devices to form a wireless network.

WAN                        b. Wi-Fi                                                WAP                            [C]

Application Based Question:

Mr Hemant has set up his office with 50 computers. He wants to connect computers and peripheral device within his office building with wires. Which type of network will you suggest him to use?

Answer:- LAN Network

Which type of network architecture is the most suitable, when a few number of computers having similar power and capacity are to be networked together.

Answer:- Peer to Peer

Arpita wants to attach her computer to a network so that it can participate in network communication. Which card will you suggest her to use.

Answer:- Network Card

Raman wants to send a few photographs and songs to on of his friends by interconnecting mobile phone using short range wireless connection. Which technology would be the most suitable for her.

Answer:- Bluetooth.

Define the following terms:

WAP:-             Wireless Access Point is a device that connects wireless communication devices to from a wireless network

Bluetooth:-                   Bluetooth is a wireless technology used to interconnect mobile phones, computers, Printers using short-range wireless connection for more information visit.

Server:-                       A Server is a computer that provides services to clients and controls access to hardware, software and other resources.

Node:-              The computer in a network can communicate with each other as well as work independently . each computer in a network is called node.

Answer the following:-

Q.1. What is networking? Give some common relevant examples.

Answer:- A computer network can be defined as a group of computers and other peripheral devices that are linked together for the purpose of sharing data and hardware resources.

Q.2. List some advantages of Networking.

Answer:- 1. Efficient use of storage media                     2. Preserving information

 3. Reduction in hardware costs

 4. Efficiency Redundancy

 6. Quickest document delivery

Q.3. Differentiable between LAN and WAN

Answer:-

LAN WAN

Definition LAN is a computer network that connects computers in small areas. WAN is a network that covers a broad area using private or public network transports.

Data transfer rates LAN offers high data transfer rates. WAN has lower data transfer rates due to congestion

Speed 80-90 mbps 10-20 mbps

Bandwidth High bandwidth is available for transmission. Low bandwidth available for transmission.

Data Transmission Error Experiences fewer data transmission errors. Experiences more data transmission errors.

Cost Set-up costs are low as the devices required to set up the networks are cheap. Set-up costs are high, especially in remote locations where set-up is not done. However, WANs using public networks are cheap.

Maintenance costs Maintenance costs are low as the area coverage is small. Maintenance costs are high as the area coverage is world-wide.

Congestion Less congestion More congestion.

Q.4. What do you understand by network security?

Answer:- Networking  Security means protecting data and resources from any unauthorized access. It is the most important aspect in computer networking. since many users are accessing the same data, so we must ensure its proper security. Only authorized persons can access or modify data. Consider the following points that may happen in any organization

Q.5. Explain Clint-Server network.

Answer:- It is a network , where several computers. Called clients or workstations are connected to the main computer called the server.