introduction to networking computers and software in networks – overview introduction lesson 1...

Introduction to NetworkingComputers and Software in Networks – Overview

Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lessons in Unit 1:

– Types of Computers

– Internal Computer Components:CPUs, Memory, andAccessory Cards

– System Software

– Application Software

– Management and Utility Software

– From Applications to the Network

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7

Lesson 5

Lesson 6

Unit 8

At the end of Lesson 1, you shouldbe able to:

– Identify the primary function of each class of computer

– Understand where each type of computer is typically found in a network

Computers are the endpoints of the networks.Computer types perform unique tasks based on their sizes.

Key Point

This lesson looks at classifications of computers found in networks and the primary purpose of each type.

Introduction to NetworkingComputers and Software in Networks – Types of Computers

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8

Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Desktop Computers Desktop computers are sometimes divided

into two broad categories:– Personal computers (PCs and Macs)

– Workstations


PCs usually run Microsoft Windows operating systems. They can also run Linux and UNIX. Macs run the Apple O/S.

A workstation typically runs a version of the UNIX operating system.

Workstations typically have more graphics capabilities and other high-end hardware.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


Mid-Range Computers and Servers The term “mid-range” covers a wide range of computer

systems that support more than one user.

Mid-range computers include:

– High-end Reduced Instruction Set Computer (RISC) CPU-based servers (IBM AS/400)

– Intel-based servers (Compaq, Dell, and Hewlett-Packard)

– UNIX-based servers of all types


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


Mid-Range Computers and Servers Mid-range and server systems are commonly used in small to

medium organizations, such as departmental information processing.

Typical applications include:

– Finance and accounting (AS/400)

– Database (Intel-based or UNIX-based)

– Printer servers (Intel or UNIX-based)


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


Mainframe Computers Mainframe computers (also referred to as super computers) and associated

client/server products can manage large organization-wide networks.

The unique and inherent capabilities of leading-edge mainframe systems include:

– Constant availability

– Rigorous backup, recovery, and security

– Huge economies of scale

– High bandwidth I/O facilities


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


Others Laptops, palmtops or PDAs, and thin client

terminals.

Thin client terminals have staged a comeback.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


Activities

1) Match the characteristics with the computer type; choose all that apply.

Constant availability___

Single user ___

Mobility___

High-end graphics___

Windows operating system___

UNIX___

A. Desktop

B. Mainframe

C. PDAs

D. Server

E. Workstation

F. PC


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

1) The class members will break into four focus groups to discuss computer types. Each group will champion a type of computer, research the applications where they are found, and make a short presentation to the other groups.

The computer types are:

a Desktop computers

b Mid-range computers (including server-based systems)

c Mainframe computers

d Other computers (laptops and PDAs)



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

2) Go to various Web sites and evaluate computer products in each of the categories presented in this lesson. Start with the following:

a Desktop computers (http://www.compaq.com, http://www.dell.com, http://www.gateway.com, and http://www.micron.com)

b Mid-range computers (http://www.hp.com, http://www.ibm.com, and http://www.sun.com)

c Mainframes (http://www.ibm.com, http://www.amdahl.com, and http://www.hitachi.com)



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

d Other computers (http://www.3com.com, http://www.apple.com, http://www.hp.com, http://www.ncsa.uiuc.edu, and http://www.oracle.com)

3) List other companies, as well as devices not covered in this lesson, such as specialized process-control computers.

4) Break into discussion groups and examine the various ways PCs have impacted how we interact at home, work, school, and leisure.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Introduction to NetworkingComputers and Software in Networks – Internal Computer

Components:CPUs, I/O, Memory, and Accessory Cards

At the end of Lesson 2, you shouldbe able to demonstrate an understanding of:

– The function of a CPU in a computer

– The role memory plays in a computer and its impact in the operation of a computer

– I/O of a computer

– Types of storage found in computers

– NICs and how computers connect to a networkAll internal computer components have multiple options for speed and capacity.

Key Point

This lesson reviews important aspects of clients and servers that attach to a network.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Central Processing Unit (CPU) The microprocessor is the brain of any computer.

The terms microprocessor and CPU are used interchangeably.

There are two basic characteristics that differentiate microprocessors:

– Data bus size is the number of bits that a CPU can send or receive in a single instruction.

– Given in MHz, the clock speed determines how many instructions per second the processor can execute.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Central Processing Unit (CPU) A 64-bit microprocessor that runs at 450 MHz is more

powerful than a 16-bit microprocessor that runs at 100 MHz.

The vast majority of all desktop PCs incorporate a single Intel architecture processor (such as Pentium).

AMD (Advanced Micro Devices) also manufactures compatible CPUs


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Input/Output A bus is a collection of wires that transmit data from

one part of a computer to another.

The term bus usually refers to aninternal bus.

An internal bus connects appropriate internal computer components to the CPU and main memory.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Input/Output The size of a bus, known as its width, determines how

much data can be transmitted at one time

A 16-bit bus can transmit 16 bits of data, or two bytes

A 32-bit bus can transmit 32 bits of data, or four bytes

A 64-bit bus can transmit 64 bits of data, or eight bytes


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Input/Output Every bus has a clock speed measured in MHz.

PCs made today include a local bus for data

The local bus is a high-speed pathway that connects directly to the processor.

Bus Width Speed (MHz) Bandwidth (bits) (MB/sec)

8-bit ISA 8 8.33 8.316-bit ISA 16 8.33 16.6EISA 32 8.33 33.3PCI 32 33 13264-bit PCI 64 66 528


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Memory The system’s internal, board-mounted

storage area in the computer

Virtual memory expands the amount of memory for an application beyond the actual physical.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Memory There are several different types of memory:

– RAM

– ROM

– Programmable read-only memory (PROM)

– Erasable programmable read-only memory (EPROM)


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Network Interface Cards A NIC is the hardware component that

provides connectivity to a network.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Network Interface Cards

NIC Characteristics

The NIC fits into an expansion slot on the motherboards I/O bus.

LANs

Computer Bus Supported

RAM Buffer Size

Bus Size

Data Rate

Media Type Supported

O/S Supported

Processor Capability

Ethernet, FDDI, Fast Ethernet, ISDN, Token Ring, etc.

MCA,ISA, EISA, PCI, NuBus, VME

8 KB, 16 KB, 32 bit, etc.

8 bit, 16 bit, 32 bit, etc.

10 Mbps, 4 Mbps, 16 Mbps, 100 Mbps, 1Gbps

10Base2, 10BaseT, UTP, STP, Optical/Fiber

VINEs, NetWare, Appletalk, Windows NT, etc.

386, 486, Pentium, Pentium II, Pentium III, etc.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Activities

1) List three speeds at which a CPU might operate.

2) The function of a CPU is to store programs. TRUE / FALSE

3) The amount of RAM determines the speed at which a CPU executes instructions. TRUE / FALSE

4) List at least three types of memory.




Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

ActivitiesChoose the correct answer in items five through eight.

5) Which device is associated with short-term storage: hard disk or RAM?

6) What determines the size of a bus: length or width?

7) Which is faster: an ISA or a PCI bus?

8) Draw a rough sketch of a NIC connecting a PC to a network using an RJ-45 connector.




Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities1) Acquire the following components and use them for

a “show and tell” session: motherboards, CPU chips, NICs, EISA-type cards, PCI-type cards, video cards, PCMCIA cards, memory (SIMM and DIMM chips), and anything else you might find interesting.

2) Go to a Web site (e.g., http://www.dell.com) and find prices for RAM. Pay particular attention to the various sizes offered, such as 8 MB, 16 MB, 32 MB, and 128 MB. Calculate the price per MB for the different sizes. Visit other Web sites for price comparisons.




Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

3) Use the Web to look up memory terms such as SIMM, DIMM, EDO, SDRAM, SGRAM. Can you think of any others?

4) Look up information on “plug-and-play” devices. Can any type of expansion card be used in a plug-and-play environment?

5) Go to a Web site such as http://www.webopedia.com and find information on the accelerated graphics port (AGP) interface. Discuss how this is being used.




Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


– What an operating system is used for in a computer

– The basic functions of an operating system

– The most common types of operating systems

– What a device driver is used for in a computer

System software manages the hardware and software interoperability within a computer.

Key Point

Two primary types of system software are discussed in this lesson, operating systems and device drivers.

Introduction to NetworkingComputers and Software in Networks – System Software


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Operating Systems Operating systems perform the most basic of computer tasks.

The tasks of an operating system include:

– Managing the operation of computer programs

– Interpreting keyboard input

– Displaying data to the computer screen

– File I/O

– Controlling peripheral devices, such as floppy disks, hard disks, and printers



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Operating Systems Operating systems can be classified as follows:

– Multitasking

– Multithreading

– Multiuse

– Multiprocessing



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Operating Systems

Operating systems provide a software platform that can run other programs, called application programs.

The application programs must be written to run on top of a particular operating system.

Applications must be “ported” to run in a different operating system environment



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Operating Systems Microsoft has generally dominated the PC operating

system market.

Microsoft Windows was the initial GUI that ran on top of DOS.

Windows for Workgroups 3.11 was Microsoft’s first peer-to-peer network operating system.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Operating Systems Windows 95 is a true operating system, not

just a GUI as found in standard Windows.

Windows 98 is another version of Microsoft Windows.

Windows NT is Microsoft’s 32-bit operating system. Windows 2000 is another O/S product.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Operating Systems There are two Windows NT options:

– Windows NT Workstation

– Windows NT Server

Windows 2000 has several products such as Windows 2000 Professional and Windows 2000 Server


The mid-range software market is characterized by competition between UNIX.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Device Drivers A device driver is special-purpose software used to

control specific hardware devices in a computer system.

Device drivers for NICs control the operation of the NIC and provide an interface for the computer’s operating system.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Activities

1) _______________ enables running a program on multiple CPUs.

2) _______________ allows more than one program to run at a time.

3) A _______________ operating system allows many concurrent users.

4) List three tasks accomplished by operating systems.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Activities

5) List five operating systems that run on PCs or PC servers.

6) A _______________ _______________ is written for and controls hardware.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

1) Using a research tool, such as an Internet search engine, list how many different “flavors” of operating systems exist.

2) Classify the operating systems found in terms of:

a Hardware platform (e.g., desktop)

b Type of application environment normally found

c Specialized operating systems (for handling graphics, etc.)



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

3) UNIX systems are sometimes classified as somewhat cryptic regarding their user interface. List what GUIs, such as Xwindows, are available for UNIX-type operating systems.

4) How would you go about getting the latest version of a device driver for a 3Com 3C905 NIC?



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


– Single-user applications

– Network applications

Application programs are used to accomplish a task or enhance productivity.

Key Point

Applications are computer programs that are used for productivity and automation of tasks. Networks are used to move application information from source to destination.

Introduction to NetworkingComputers and Software in Networks – Application Software


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Types of Applications Single-user applications include:

– Word processors

– Desktop publishing

– Graphics

– Database

– Spreadsheets

– Web Browsers



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Types of Applications Network applications include:

– Database access

– Print services

– E-mail

– Fax services



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Activities

For each function, choose the type of program and program name (from the next page).

1) Categorize information _______________

2) Document processing _______________

3) Document publishing _______________

4) Manipulate numbers _______________

5) Create artwork _______________

6) Internet retrieval _______________



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Activitiesa Spreadsheet b Adobe Illustrator c Netscape Communicatord Graphicse Microsoft Accessf Databaseg Word processorh Adobe Framemakeri Lotus Notesj Microsoft Wordk Web browser



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Activities

7) List three network applications.

8) Contrast the functions/characteristics of an application program with an operating system.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

1) Using the Web, list the kind of applications available for LINUX.

2) Go to http://www.netcraft.com and list the usage rates for the various Web server software programs.

3) What are the major database products? Where are these typically being used (e.g., large organizations, small businesses)?



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6


– Different types of communication and management software

– Usage of communication programs and processes

– Basic functionality of network management software

Not all computer programs are for individual user productivity.

Key Point

This lesson looks at another category of software, communication and management software.

Introduction to NetworkingComputers and Software in Networks –

Management and Utility Software


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Management and Utility Software Communication and management software includes:

– System Status Messaging Services

– Network Communications

– Network Security Utilities

– Network Management Tools

– Remote Access Services

– Backup and Recovery Utilities


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



System Status Messaging Services The network operating system (NOS)

typically provides software on the client workstation to open windows for status messages from remote servers.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Network Communications Clients access the network through the use

of communication protocols such as Internetwork Packet Exchange (IPX), Transmission Control Protocol/Internet Protocol (TCP/IP), and Ethernet.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Network Security Utilities Network security utilities come in several forms and can often prevent

network failures and damage to an organization’s assets.

Network security specialists classify these threats as follows:

– Hackers

– Bandits

– Trojan horses

– Viruses


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Network Management Tools Network management tools generally consists of the

following functions:

– Network configuration

– Troubleshooting

– Event notification

– Metrics and planning


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Remote Access Services The ability to work anywhere at any time is

creating an urgent need for more secure remote LAN access.

Virtual Private Networks (VPNs) which provide a secure “tunnel” through the Internet are increasing in popularity


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Backup and Recovery Utilities Backup and recovery procedures and

software are extremely important for organizations that rely on stored information.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Activities

1) List at least three utility programs you are familiar with or have heard of.

2) Describe the purpose of a virus protection program.

3) List five things you would like a network management program to provide.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Extended Activities

1) Using the Web, look up information on computer viruses. Start with http://www.nai.com.

2) How many known viruses are there?

3) On average, how many new viruses are found every month?


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Extended Activities

4) Break into focus groups and research and present information on common network management software, such as HP OpenView, 3Com Transcend, Bay Networks Optivity, and Sun Microsystems Solstice.

5) Research firewall products and list the security issues they address.


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

At the end of Lesson 6, you shouldunderstand:

– How applications use the operating system

– How application information is sent from one computer system to another

Applications are closelytied to the underlying operating system.

Key Point

This lesson looks at how application information makes its way from an application in a computer to the network.


From Applications to the Network


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Application-to-Application Communication The following three items must be installed on the local

machine by the local operating system to provide for communication across a network:

– NIC and NIC device driver

– Client software

– Communication software


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6



Application-to-Application Communication


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Activities

1) Draw a diagram illustrating a small network (two nodes). Include thorough information on CPU type, memory, type of operating system, NIC, and application(s).




Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

1) Break into groups. One group will represent services offered by a multiuser operating system. The other groups will represent different applications, such as e-mail clients, Internet browsers, Web servers, and word processors. Each application group will list the various functions they perform. The operating system group will list the services they offer.




Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Extended Activities

2) The operating system group will further divide into two groups: a desktop operating system and a server operating system. List the appropriate functions of each group.

3) The various groups (applications) will make requests of the local operating system and the server operating system.

4) Discuss the flow of information at the desktop computer, and from the client to the server.




Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

Unit 1 Summary Quiz

1) List the four computer classifications in order of processing power typically associated with each type.

Introduction to NetworkingComputers and Software in Networks – Summary Quiz


Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

2) List four capabilities of a mainframe.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

3) What are four common components of a computer system?



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

4) What does I/O stand for?



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

5) Which is an example of a processors clock speed?

a. 400Mhz

b. 64 bit



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

6) What is the difference between RAM and ROM?



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

7) Which of the following I/O bus types support NICs?

a. MCA

b. ISA

c. EISA

d. PCMCIA

e. RAM



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

8) List three different classifications for operating systems.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

9) Which of the following are managed by the operating system?

a. Keyboard input

b. Screen display

c. File I/O

d. Peripheral control



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

10) List at least two GUI-based operating systems.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

11) What is the primary purpose of a device driver?



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

12) List three types of devices that use drivers.



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

13) Which of the following is communication/management software?

a. Groupware

b. Backup

c. Remote access

d. Virus protector

e. Java



Introduction

Lesson 1

Lesson 2

Lesson 3

Lesson 4

SummaryQuiz

Lesson 5

Lesson 6

introduction to networking computers and software in networks – overview introduction lesson 1...

Documents

end of lesson

key pointthis lesson

super computers

classifications of computers

computer types

personal computers pcs

wide range of computer

type of computer