QUIZ 7:

1. Discuss the components required for successful communications.

2. Identify various sending and receiving devices.

3. Describe uses of computer communications.

4. List advantages of using a network.

5. Differentiate among client/server, peer-to-peer, and P2P networks.

6. Describe the various network communications standards.

7. Explain the purpose of communications software.

8. Describe various types of lines for communications over the telephone network.

9. Describe commonly used communications devices.

10. Discuss different ways to set up a home network.

                                                            ANSWER:

1.Components for a successful communication:

• sender
• receiver
• medium

2. Sending and Receiving Devices:

• microcomputer
• minicomputers
• mainframes
• cellular telephones
• pagers 

3.Uses of Computer communication- impression formation, deception, group dynamics, disinhibition and especially relationship formation.

4.Advantages of using a Network:

• share software
• share information with others on networks
• share peripherals
• speed of sharing software and information files
• cheaper than buying individual software and hardware for each standalone especially if for a school, network software often offers deals for amount being purchased
• security, files can be copy inhibit mode
• centralized software management- software being loaded onto one computer but also this loads software to entire network at one time
• electronic mail(e-mail) between network users, ideal for office memos
• flexible access- access you files from any computer on the network unlike standalone which would mean only being able to access your data from the one computer you uploaded data onto.

5. Client/ Server-describes the relationship between two computer programs in which one program, the client, makes a service request from another program, the server, which fulfills the request.


Peer-to-Peer-a distributed application architecture that partitions tasks or workloads between peers.


P2P network-a type of network in which each workstation has equivalent capabilities and responsibilities.


6.Network Communication Standards:

Ethernet- network standard that specifies no central computer or device on the network (nodes) should control when data can be transmitted; that is, each node attempts to transmit data when it determines the network is available to receive communications.

Token Ring- specifies that computers and devices on the network share or pass a special signal in an unidirectional manner and in a preset order.

TCP/IP- a network standard that defines how messages or data are routed from one end of the network to the other, ensuring the data arrives correctly.

Wi-Fi-is a series of network standards that specifies how two wireless devices communicate over the air with each other.

Bluetooth- a network standard, specifically a protocol, that defines how Bluetooth devices use short-range radio waves to transmit data.

Radio wave identification- is a standard, specifically a protocol, that defines how a network uses radio signals to communicate with a tag placed in or attached to an object, animal, or person.

WiMax-Short for World Wide Interoperability for Microwave Access,also known as 802.16, a network standard developed by IEEE that specifies how wireless devises communicate over the air in a wide area.

7.Comminication Software- used to provide remote access to systems and exchange files and messages in text, audio and/or video formats between different computers or user IDs.

8.Types of lines for communication over telephone network:

• Fiber Optics-is a core glass that is coated with carbon black to reflect the light beam with the core and a protective paint coating of plastic.
• Unshielded Twisted Pair- to prevent interference (so-called cross talk) by four pairs of 22-gauge wire around each other in the main cable.
• Shielded Twisted Pair- consists of four pairs of wires that are wrapped around each other.  
• Coxial- uses a single copper line that is in the middle.