Chapter :- 1 Computer Network

June 30, 2023 chinu

Chapter :- 1 Computer Network

Tick the correct answer

1. A computer network is a collection of Computer and devices connected by ________ channels.
a. Internal
b. Communication
c. External

2.________ provide a high-speed wireless signal transmission.
a. Infrared
b. Celluar Radio
c. Microwaves

3.A network consisting of small and large computers over a vast geographical area is called _______
a. LAN
b. WAN
c. MAN

4. The computer connected to the server is called _________
a. Host
b. Workstation
c. Workgroup

5._______ network is desgined primarly for small to medium local area network.
a. Client
b. Peer-to-Peer
c. Server

6._______ server managers printers and documents being printed on network.
a. Print
b. Web
c. Mail

Write True and False Statement

1. Each computer on a network cannot access hardware available on the network False
2. You can transfer songs from laptop to smartphone using PAN. True
3. Landline phone networks and LANS often use twisted-pair cable. True
4. A client is sometimes called the host computer. False
5. A peer-to-peer network works best in a large working environment. False

6. SMTP is an email protocol for receiving messages. False
7. Network allows user to exchange money from one bank account to another via Electronic Fund Transfer. True

Fill in the blanks

1.Each Computer or device on the network is called node
2.A client is a computer system that relies on a server for all the resources.
3. Server are powerful computers in the network
4.A Switch is a devices that provides a central point for cables in a networks.
5. Physical transmission media use wire or cable to send communction signals.
6.Many big companies use fiber optics cables in high-traffic networks.

Define the Following.

1.Network :- A computer network is a collection of computer and devices are connected by communcation channel.

2.Protocol :- A protocol is a set of rules that outline characteristics of how two devices communicate ove the network.

3.Router :- A router is a device that connects multiple computers together and transmits data to its correct destination on a network through a process known as routing.

4.FTP :- File Transfer Protocol): This is a set of rules that allows file uploading to and download from other computers on the Internet.

5.SMTP :- This is an email protocol for sending email messag across the internet.

Answer the following Question in short

1. What is Communication ?
Ans :- Communication involves a sender transmitting an idea, information, or feeling to a recevier.

2.What is a computer network?
Ans :- A Computer network is a collection of computers and devices connected by communcation channels.

3.What is Network Interface Card?
Ans :- Network Interface card mediate between the computer and the physical media such as cables over which data travels.

4.What is network architecture?
Ans :- The network architecture refers to how computers are organised and how tasks are allocated among these computers.

5. What is the meaning of communication channels?
Ans :- Communcation channel is a medium on which the data, instructions, or inforamation can travel. It can be cables, microwave station, or satellites.

6.How does a communication satellite work?
Ans :- It is a space station that recevies microwave signals from an earth-based station, amplifies the signals , and broadcasts the signals back over a wide area to any number of earth-based stations.

Answer Briefly

1. What are the basic requirement for computer communcation?
Ans :- computer communication, you need the following components:

(a)SENDER: It is a sending device that initiates to send data, instructions or information. It can be a computer or mobile device.

(b)TRANSMISSION MEDIA: It is a medium on which the data, instructions, or information can travel. It can be cables, microwave stations, or satellites.

(c)RECEIVER: It is a receiving device that accepts the transmission of data, instructions, or information. It can be a computer or mobile device.

(d)PROTOCOL: It is a set of rules that outlines characteristics of how two devices communicate.Without protocol, two devices may be connected, but cannot transfer or exchange the data.

2.What are different types of networks? Explain MAN and PAN.
Ans :- There are many types of network: Local Area Network (LAN), Metropolitan Area Network (MAN), Wide Area Network (WAN) and Personal Area Network (PAN).

MAN is a network that connects the Local Area Networks in a metropolitan area such as a city or a town.A MAN typically includes one or more LANS but covers a smaller geographical area than a WAN. Telephone companies, cable television operators, and other organizations us MAN network.

A Personal Area Network (PAN) is a network that connects personal devices like laptop, smartphones, digital cameras, printers, etc. in an individual’s workspace using wired and wireless technology.
A PAN may connect devices through a router using network cables or by using Bluetooth or Wi-Fi technology. You can transfer files and songs from laptop to a smartphone using PAN.

3.What are different types of network architecture? Explain.
Ans :-The network architecture refers to how computers are organised and how tasks are allocated among these computers. It is mainly categorized into two major types:

a. Peer-to-Peer :- A network of two or more computers that uses the same type of programs to communicate and share data is called a Peer-to-Peer network.Peer-to-Peer networks work best in a small environment. These networks are designed primarily for small to medium local area networks

b.Client/Server Network :- A network in which one or more computers are designated as server(s), and the other computers on the network, called clients, can request services from the server, is known as Client/Server Network.

c.Server :- A server, sometimes called the host computer, controls access to the hardware and software on the network, and provides a centralized storage area for programs, data, and information, When a user connects to the server, then applications, files, printers, etc.A web server is a computer that delivers requested web pages to your computer.

d.Client :- A Client is a computer system that relies on a server for all the resources.

4.What is Network topology? Explain Bus topology.
Ans :- In networking, the term topology refers to the layout structure of connected computers and devices on a network. A network topology has two levels ie. physical and logical.

BUS Topology :- In this kind of topology, all the computers and their devices are connected to one single cable called the Bus. This Bus network is also called linear network. It transmits data, instructions and information in both directions.

5.Write the different types of Wireless transmission media.
Ans :- Wireless transmission media send communication signals through the air.This media because it is more convenient than installing cables. Types of wireless transmission media used in communications include infrared, broadcast radio, cellular radio, microwaves, and communication satellites.