IT1707
TOPIC TITLE: COMMUNICATION AND NETWORKS
LEARNING OBJECTIVES:
At the end of the topic session, the students should be able to:
LO1: Illustrate the communication systems; LO2: Distinguish one network type from another; LO3: Determine the architecture of a certain network; and LO4: Connect nodes through a network.
MATERIALS/EQUIPMENT:
o Computer o LCD projector o File/s (06 Communication and Networks) 06 LCD Slide 1.ppsx 06 Handout 1.pdf 06 Laboratory Exercise 1.pdf 06 Activity 1.exe o Software requirements MS PowerPoint Oracle VM VirtualBox installed with two (2) Windows 7 o Whiteboard marker and eraser
TOPIC PREPARATION:
o The instructor is encouraged to research for materials that will help supplement the topics in this session. o Prepare the topic slides and handout for the topic. o Encourage the students to take notes and inform them that the handout for this topic can be downloaded from eLMS. o The instructor may use the suggested learning activities below to facilitate a thorough and creative discussion of the topic to create a student-centered class. However, it is imperative that you prepare additional examples or ideas as supplementary materials on the topic to be presented. o Motivate the students to participate in all class activities and let them feel they are important. Religiously follow all activities as these were geared towards the achievement of the course learning outcomes. o Anticipate possible questions that students might raise during the discussion. o The instructor is required to answer the seatwork and laboratory exercises. o Prepare the Oracle VM VirtualBox installed with two (2) Windows 7 operating system.
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PRESENTATION OVERVIEW:
A. Introduction 15 min B. Instructional Input Communication 25 min Define what are computer communications Explain communication systems Networks 15 min Define what computer networks are Define the special terms used to describe a computer network Network Types 30 min Discuss the different network types Network Architecture 25 min Define what network architecture is Explain the different topologies and strategies used in computer networks Organizational Networks 20 min Describe the different Internet technologies and network security used in organizational networks C. Generalization 15 min D. Application 150 min E. Assignment 5 min Total duration 300 min
TOPIC PRESENTATION:
A. Introduction
Slide 1 1. To start the discussion, show Slide 1 of 06 LCD Slides 1, then tell the students the following statements and present the topic coverage: Communication and Networks Communication The Internet has become one (1) of the most important Connection Devices Data Transmission components of our life. We browse the Web, check emails, make Networks VoIP phone calls, and have video conferences via computers. All Network Types Network Architecture of these applications are made possible by networking Organizational Networks computers together, and this complex network of computers is *Property4/16/2018 of STI IT1707 1 usually referred to as the Internet.
To efficiently and effectively user computers, you need to understand the concept of connectivity, wireless networking, and the elements that make up network and communications systems. Additionally, you need to understand the basics of connection devices, data transmission, network types, network architectures, and organizational networks.
2. Use 06 Activity 1 to assess’ the students understanding of basic networking. Select ten (10) students and divide them into two (2) groups. Select a group who will first to perform the activity. The two
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(2) groups will select and answer a question in the activity alternately. The first group to get three (3) in a row is the winner.
The following are the answers in no particular order:
Ethernet Internet Bluetooth
IP address Firewall Computer network
Wi-Fi Browser Satellite
Note: Acknowledge and assess the answers coming from the class. Slide 2 Communication B. Instructional Input
Communication
1. Ask at least three (3) students what is communication in computers. Encourage them to provide an explanation of their answers.
http://storage.brantfordexpositor.ca/v1/dynamic_resize/sws_path/suns -prod- *Property of STI IT1707 images/1297825405678_ORIGINAL.jpg?quality=80&size=650x&stmp 4/16/2018 =1460749411527 2 Note: Acknowledge and assess the answers coming from the class. Slide 3 Communication Systems 2. Refer students to Page 1 of 06 Handout 1 and show Slides 2-3. Define what are computer communications and explain communications
Sending Message Connection device Communication systems. Provide additional examples. device channel
(Telephone line) Step 3 Packets Activity: Seatwork
Connection Message Receiving Learning Objective(s): LO1 device device *Property of STI IT1707 4/16/2018 O’Leary, T., O’Leary L., and O’Leary3 D. (2017). Computing essentials 2017. USA: McGraw-Hill Education. 3. Afterwards, to assess the students’ understanding about communication systems, divide the class into five (5) groups and ask each group to choose their representative. Ask each group to perform the following:
Slide 4 Give each group five (5) minutes to illustrate a Activity communication system using the components shown in Slide 4. Tell them to draw their illustration on a paper and
e-mail e-mail label what are the sending device and receiving device, laptop computer modem the communication channels, and the connection smartphone Internet devices used.
cell tower
https://pixabay.com/p-35674/?no_redirect http://pluspng.com/img-png/laptop-png-black-and-white-laptop-clip-art-at-vector-image-1000.png https://cdn0.iconfinder.com/data/icons/wi-fi/100/wifi-10-512.png *Property of STI IT1707 http://cdn.onlinewebfonts.com/svg/img_563295.png 4/16/2018 http://images.clipartpanda.com/email4-icon-vector-27630.png https://cdn3.iconfinder.com/data/icons/mobile-devices/512/sgs4-256.png Ask each group’s representative to present their answer in the class. Encourage them to create an example scenario.
Note: Acknowledge and assess the answers coming from the class.
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Answer:
Figure 1. A simple communication system
Networks
Slide 5 1. Ask the students what computer network is. Networks Note: Acknowledge and assess the answers coming from the Directory server class.
Switch Router 2. Afterward, refer students to Pages 1-2 of the handout and using the Servers example of computer network diagram in Slide 5 define what computer networks are and the special terms used to describe a Clients
*Property of STI IT1707 4/16/2018 O’Leary, T., O’Leary L., and O’Leary5 D. (2017). Computing essentials 2017. USA: McGraw-Hill Education. computer network.
Network Types
1. Tell the students the following statements:
There are several different types of computer networks. Computer networks can be characterized by their size as well as their purpose.
The size of a network can be expressed by the geographic area they occupy and the number of computers that are part of the network. Networks can cover anything from a handful of devices within a single room to millions of devices spread across the entire globe.
For example, telephone lines may connect communications equipment within the same building or within a home. Networks also may citywide and even international, using both cable and wireless connections.
In this topic, we will discuss the different types of computer networks.
2. Refer students to Page 1 of the handout and show Slides 6-12, discuss the different network types using the provided simple diagrams and explain each using the given diagrams. Prepare example scenarios when explaining each type.
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Slide 6 Slide 7 Slide 8 Network Types Local Area Networks (LANs) Home Networks Different types of computer networks: Internet Printer Printer Modem • Local area networks (LANs) Server • Home networks • Wireless LANs (WLANs) Workstations Switch Switch Router Switch • Personal area networks (PANs) Access point • Metropolitan area networks (MANs) Workstations • Wide area networks (WANs) Office A Office B Personal computers *Property4/16/2018 of STI IT1707 6 *Property4/16/2018 of STI IT1707 7 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 8 http://clipart-library.com/
Slide 9 Slide 10 Slide 11
Wireless LAN (WLANs) Personal Area Networks (PANs) Metropolitan Area Networks (MANs)
Internet
Internet
Customer Customer
Modem Access point
Base station Customer Customer
*Property4/16/2018 of STI IT1707 9 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 10 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 11 http://clipart-library.com/
Slide 12 Wide Area Networks (WANs)
Internet
Provider Provider Provider
*Property4/16/2018 of STI IT1707 12 http://clipart-library.com/
Steps 3-4 Activity: Seatwork Learning Objective(s): LO2
3. Afterward, to assess the students understanding about different network types, ask at least three (3) students to distinguish what type of computer networks are shown on Slides 13-15. Encourage each student to explain their answer.
Note: Acknowledge and assess the answers coming from the class.
Answer: Item 1. Local Area Network (LAN) Item 2. Wide Area Network (WAN) Item 3. Metropolitan Area Network (MAN)
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Slide 13 Slide 14 Slide 15 Activity #1 (Item 1) Activity #1 (Item 2) Activity #1 (Item 3)
Internet Internet Internet
*Property4/16/2018 of STI IT1707 13 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 14 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 15 http://clipart-library.com/
4. To assess the students understanding about when to use a certain network type, ask the five (5) groups of students from the activity of the topic Communication to perform the following:
Slide 16 Give each group two (2) minutes to analyze and answer Activity #2 the problem scenario shown on Slide 16. Problem: Mr. Jess is a small business man that run a company that sells computer hardware, he have been experiences problem with his accounting department which he Tell them to create a simple diagram of their answer in a depends on to provide him with the sales reports. Mr. Jess wants to be able to shared information between his paper. computer and the six (6) computer station of the accounting department and have a central printing area. What type of network would you recommend to Mr. Jess? Ask each group’s representative to present and explain
*Property of STI IT1707 their answer in the class. 4/16/2018 16 Note: Acknowledge and assess the answers coming from the class.
Answer:
Network Architecture
1. Define what network architecture is and explain the different topologies and the strategies used in computer networks. Refers students to Pages 2-3 of the handout and show Slides 17-24. Provide additional example scenarios.
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Slide 17 Slide 18 Slide 19 Network Architecture Bus Network Ring Network Specifications of a computer network: • Topology . Bus network . Ring network . Star network . Tree network . Mesh network • Strategies . Client/server networks . Peer-to-peer network *Property4/16/2018 of STI IT1707 17 *Property4/16/2018 of STI IT1707 18 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 19 http://clipart-library.com/
Slide 20 Slide 21 Slide 22 Ring Network Tree Network Mesh Network
*Property4/16/2018 of STI IT1707 20 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 21 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 22 http://clipart-library.com/
Slide 23 Slide 24 Client/server Network Peer-to-Peer Network
Server
Shared printer
Clients
*Property4/16/2018 of STI IT1707 23 http://clipart-library.com/ *Property4/16/2018 of STI IT1707 24 http://clipart-library.com/
Step 2 Activity: Seatwork Learning Objective(s): LO3
2. Afterward, ask at least three (3) students what is the topology used in the school’s computer laboratory and what network strategy is used by the nodes to share resources.
Note: Acknowledge and assess the answers coming from the class.
Organizational Networks
1. Tell the students the following statements:
Computer networks in organizations have evolved over time. Most large organizations have a complex and wide range of different configurations, operating systems, and strategies. These organizations face the challenge of making these networks work together effectively and securely.
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In this topic, we will discuss what are the technologies used to Slide 25 support the effective communications within organizations and Organizational Networks to ensure network security. Some technologies used in organizations: • Internet technologies . Intranet 2. Refer students to Page 3-4 and show Slides 25-26. Describe the . Extranet • Network security . Firewall different Internet technologies and network security used in . Intrusion detection systems (IDS) . Virtual private networks (VPN) organizational networks. Provide additional examples.
*Property4/16/2018 of STI IT1707 25 C. Generalization Step 1 Slide 26 Assessment: Group Activity Learning Objective(s): LO2 and LO3 Organizational Networks (cont…)
Organizational Organizational intranet intranet 1. Show Slide 27 and ask the five (5) groups from the activity of the topic’s Communication and Network Types to perform the following: Proxy server Proxy server
Firewall Extranet Firewall connection Give each group five (5) minutes to analyze and answer the problem scenario. Create a diagram of their answer *Property4/16/2018 of STI IT1707 O’Leary, T., O’Leary L., and26 O’Leary D. (2017). Computing essentials 2017. USA: McGraw-Hill Education. in a paper.
Slide 27 Tell them to list down what is the network type, the Activity topology, and the strategy used in their diagram. Problem: A university ask their I.T. department to setup a network that connects the registrar’s office, the cashier’s office, and the server room. The registrar’s office has four (4) Afterward, ask each group’s representative to present desktop computers and centralized printer and scanner. The cashier’s office has three (3) desktop computers and their answer in the class. each has a printer. Note: Acknowledge and assess the answers coming from the
*Property of STI IT1707 class. The output of the students will be graded based on the 4/16/2018 27 given rubrics below.
Grading rubric for the illustration: Criteria Performance Indicators Points Design The illustration is well presented and 10 organized. Interface All elements interact with each other. 10 Components All elements are included and drawn 10 correctly. Label All elements labeled with reference and 10 value. Total 40
Grading rubric for the explanation: Criteria Performance Indicators Points Organization Expressed the points in clear and logical 10 of ideas arrangement of ideas in the explanation. Explanation Provided pieces of evidence, supporting 10 details, and factual scenarios. Total 20
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Answer:
2. Ask the students if there are any clarifications about the discussion.
D. Application Steps 2-3 Assessment: Hands-on activity Learning Objective(s): LO4 and LO5
1. Ask the students to individually perform the hands-on activities in 06 Laboratory Exercise 1. Give them ample time to finish. Move around the class to check their activities. Tell them that they can consult you about their concerns regarding the activities.
Note: The instructor must ensure that the two (2) installed Windows 7 in the Oracle VM VirtualBox has the correct network settings. To check the settings of each virtual machine, select the installed virtual machine > Settings > the Settings window will appear > select Network. The following are the correct settings: Check the Enable Network Adapter Set the Attached to label to Internal Network Click Advanced then set the Promiscuous Mode to Allow All Ensure that the two (2) virtual machines have different MAC Address
2. Collect and save each student’s activity.
Note: The activity of the students will be graded based on the given rubrics in 06 Laboratory Exercise 1.
E. Assignment Steps 1-2 Tool: eLMS (Neo - LMS) Learning Objective(s): LO1, LO2, and LO3
1. Ask the students to log on eLMS and answer the 06 eLMS Activity 1 under Communication and Networks topic.
2. Set specific timeline (date and time) for students to accomplish it.
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REFERENCES O’Leary, T., O’Leary L., and O’Leary D. (2017). Computing essentials 2017. USA: McGraw-Hill Education. Wempen, F. (2014). Computing fundamentals digital literacy edition. United Kingdom: John Wiley & Sons, Ltd.
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