ICT Computer Systems Servicing Grade 10 Past Paper PDF, Quarter 3, Week 2

Department Of Education National Capital Region Schools Division of Paranaque City Self-Learning Module ICT - COMPUTER SYSTEMS SERVICING GRADE 10 QUARTER 3 – WEEK 2 Learning Competencies (Essent...

Department Of Education National Capital Region Schools Division of Paranaque City Self-Learning Module ICT - COMPUTER SYSTEMS SERVICING GRADE 10 QUARTER 3 – WEEK 2 Learning Competencies (Essential Competencies) LO 1 Install network cables (TLE_IACSS912SUCN-IVa-j-33) Objectives At the end of the lesson, the learners will be able to: - identify necessary network materials in accordance with established procedures and check against system requirements - perform copper cable splicing based on Electronic Industries Alliance/ Telecommunications Industry Association (EIA/TIA) standards - appreciate the importance of network cabling Let’s Recall (Review) Direction: Choose the letter of the best answer. Write your answer in your answer sheet for this lesson (1 whole intermediate pad). 1. Are responsible for translating mnemonic textual Internet addresses into hard numeric Internet addresses. a. DNS c. Ports b. IP d. WNS 2. It identifies a host machine on the internet. a. IP c. Port Number b. Ports d. WNS 3. DNS stands for a. Digital Numeric System c. Domain Name System b. Different Name System d. Double Number System 4. IP stands for a. Internal Privacy c. Interdependent Protocol b. Internet Protocol d. Inverted Protocol 5. computer or device that links two similar LANs based on the same protocol. a. Bridge c. Lan b. Gateway d. Router Let’s Understand (Study the Concept) Network Equipment and Cables An IT network connects all your devices, plus other peripheral equipment such as printers. To build a network you will need a range of equipment including the following: Cables and connectors. These link together the computers, printers, servers and other equipment on your network. 1  A router. This manages network traffic, ensuring devices can communicate with each other via both wired and wireless connections, and provides internet connectivity. A wireless access point (optional). This will extend your wireless network if the router is incapable of offering coverage in certain parts of the building. An internet connection. This could be a faster fiber connection or dedicated leased line. A hardware firewall. This creates a secure barrier between your network and the internet, blocking security threats. Networks sometimes include an on-site network server which runs central applications, acts as an email server and provides file storage. Network Hardware Building Blocks Some businesses still build their network with cables because they're very reliable and fast. The most common type is Ethernet cable, which is rated for speed. Cat 6 cables can carry data fast enough for any business purpose. When building their network most businesses install network sockets at convenient locations in their premises, so computers and other devices can be plugged into the network. The Router: A vital network component The router acts as a signpost, indicating where data on your network should go and enables devices to communicate with one another. Routers, also connect directly to the internet and share the connection via cable or Wi-Fi with devices on the network. Going Wireless Routers also include Wi-Fi capability, enabling people to connect laptops, smartphones, tablets and other devices to the network wirelessly. Wi-Fi is ideal for providing network access to staff with mobile devices and in meeting rooms or common areas. It's also useful for offering internet access to visitors, with many routers including a separate 'guest' network for the purpose. Network equipment speeds Most network equipment complies with common standards, so you can combine routers, cables and firewalls from different manufacturers. However, the speed of your network might be governed by the slowest element. For example, if all your cables and computers are rated to Cat 6, make sure your router is rated to Cat 6 too. There are a number of wireless networking standards to take into account, although the majority of modern devices will include support for the latest versions. Try to get a wireless router or access point rated to 'Wireless n' or '802.11n'; it's the fastest type available, but will still work with older wireless equipment, too. Steps in Installing network cable 1. Unroll the required length of network cable and add a little extra wire, just in case. If a boot is to be fitted, do so before stripping away the sleeve and ensure the boot faces the correct way. Please note that the cable length should not be more that 100 meters to prevent attenuation (i.e. Degradation of signal strength due to losses as signal travel down the length of the cable). Keeping the length within 100 meters from the access point (i.e. face plate) to the patch panel or network switch will ensure good signal strength/quality. 2. Carefully remove the outer jacket of the cable. Be careful when stripping the jacket as to not nick or cut the internal wiring. One good way to do this is to cut lengthwise with snips or a knife along the side of the cable, away from yourself, about an inch toward the open end. This reduces the risk of nicking the wires' insulation. 2 Locate the string inside with the wires, or if no string is found, use the wires themselves to unzip the sheath of the cable by holding the sheath in one hand and pulling sideways with the string or wire. Cut away the unzipped sheath and cut the twisted pairs about 1 1/4" (30 mm). You will notice 8 wires twisted in 4 pairs. Each pair will have one wire of a certain color and another wire that is white with a colored stripe matching its partner (this wire is called a tracer). 3. Inspect the newly revealed wires for any cuts or scrapes that expose the copper wire inside. If you have breached the protective sheath of any wire, you will need to cut the entire segment of wires off and start over at step one. Exposed copper wire will lead to cross-talk, poor performance or no connectivity at all. It is important that the jacket for all network cables remains intact. 4. Untwist the pairs so they will lay flat between your fingers. The white piece of thread can be cut off even with the jacket and disposed (see Warnings). For easier handling, cut the wires so that they are 3/4" (19 mm) long from the base of the jacket and even in length. 5. Arrange the wires based on the wiring specifications you are following. 6. There are two methods set by the TIA, 568A and 568B. Which one you use will depend on what is being connected. A straight-through cable is used to connect two different-layer devices (e.g. a hub and a PC). Two like devices normally require a cross-over cable. The difference between the two is that a straight-through cable has both ends wired identically with 568B, while a cross-over cable has one end wired 568A and the other end wired 568B. For our demonstration in the following steps, we will use 568B, but the instructions can easily be adapted to 568A. ▪ 568B - Put the wires in the following order, from left to right: white orange orange white green blue white blue green white brown brown ▪ 568A – from left to right: white/green green white/orange blue white/blue orange white/brown brown 3 6. You can also use the numeric number 1-2-3-6/3-6-1-2 to remember which wires are switched. 7. Press all the wires flat and parallel between your thumb and forefinger. Verify the colors have remained in the correct order. Cut the top of the wires even with one another so that they are 1/2" (12.5 mm) long from the base of the jacket, as the jacket needs to go into the 8P8C connector by about 1/8", meaning that you only have a 1/2" of room for the individual cables. Leaving more than 1/2" untwisted can jeopardize connectivity and quality. Ensure that the cut leaves the wires even and clean; failure to do so may cause the wire not to make contact inside the jack and could lead to wrongly guided cores inside the plug. 8. Keep the wires flat and in order as you push them into the RJ- 45 plug with the flat surface of the plug on top. The white/orange wire should be on the left if you're looking down at the jack. You can tell if all the wires made it into the jack and maintain their positions by looking head-on at the plug. You should be able to see a wire located in each hole, as seen at the bottom right. You may have to use a little effort to push the pairs firmly into the plug. The cabling jacket should also enter the rear of the jack about 1/4" (6 mm) to help secure the cable once the plug is crimped. You may need to stretch the sleeve to the proper length. Verify that the sequence is still correct before crimping. 8. Place the wired plug into the crimping tool. Give the handle a firm squeeze. You should hear a ratcheting noise as you continue. Once you have completed the crimp, the handle will reset to the open position. To ensure all pins are set, some prefer to double- crimp by repeating this step. 9. Repeat all of the above steps with the other end of the cable. The way you wire the other end (568A or 568B) will depend on whether you're making a straight- through, rollover, or cross-over cable (see Tips). 10. Test the cable to ensure that it will function in the field. Mis- wired and incomplete network cables could lead to headaches down the road. In addition, with power-over-Ethernet (PoE) making its way into the marketplace, crossed wire pairs could lead to physical damage of computers or phone system equipment, making it even more crucial that the pairs are in the correct order. A simple cable tester can quickly verify that information for you. Should you not have a network cable tester on hand, simply test connectivity pin to pin. 4  Let’s Apply Directions: On your answer sheets, create a flowchart on how to install network cables be guided by the scoring rubric below. Needs Excellent Very Good Good CRITERIA Improvements (10-8)=100% (7-5)=95% (4-3)=86% (2-1)=80% Most of the The content of Correctness All the content of content of the Few of the the illustrations & the illustration is illustrations is illustrations is is somewhat Accuracy correct. somewhat somewhat correct correct correct Most of the All the required Some of the required The required steps to install required installation steps installation steps Organization network cable installation steps were found in were found in the were found in the were found in the the submitted submitted work. submitted work submitted work. work. Some of All the Most of Few of illustration are Use of illustrations used illustrations are illustration are not attractive Graphics are attractive & attractive and not attractive but but easy to easy to read. easy to read. easy to read. read. Let’s Analyze Directions: Read and answer the following questions below. Write your answer in your answer sheet. 1. Why is it important to test the cables? __________________________________________________________ __________________________________________________________ 2. What will happen if you crimp the cable incorrectly? __________________________________________________________ __________________________________________________________ 3. Why is it important to place the cable on a safe location? __________________________________________________________ __________________________________________________________ 4. How can a desktop computer connect to the internet? __________________________________________________________ __________________________________________________________ 5. How can a Laptop or Cellphone connect to the internet? Explain you answer briefly. __________________________________________________________ __________________________________________________________ 5  Let’s Try (Evaluation) Directions: Match Column A to Column B. Write your answer on your answer sheet. A B 1. Manages network traffic A. Cable and Connectors 2. Ability of individuals and organizations B. Fire Wall to connect to the Internet C. Hardware Firewall 3. creates a secure barrier between your network D. Internet Connection and the internet E. RJ-45 4. Links computer, printer or routers together F. Router 5. An 8-pin/8-position plug or jack is commonly G. Wi-Fi used to connect computers onto Ethernet-based local area networks (LAN). Let’s Create Directions: Create a presentation on how to install network cable on PC/Laptop. You will attach your picture while making your activity. Be guided by a scoring rubric below. Excellent Needs Very Good Good CRITERIA (10-8=94%- Improvements (7-5=87%-93%) (4-3=80%-86) 100%) (2-1=75%-79%) All content Most of the The content is Content is typically throughout content is generally accurate, confusing or the presentation is accurate but but one piece of contains more than Content & accurate. There there is one piece information is one factual error. It Accuracy are no factual of information clearly flawed or is difficult to errors. that might be inaccurate. understand the time inaccurate. period that was chosen. All graphics are A few graphics All graphics are Several graphics attractive (size are not attractive, attractive but a few are unattractive Use of and colors) and but all support do not seem to AND detract Graphics support the the theme / support the from the content of theme/content of content of the theme/content of the presentation. the presentation. presentation. the presentation. Font formats (e.g., Font formats Font formatting has Font formatting color, bold, italic) have been been carefully makes it Text - Font have been carefully planned planned to very difficult to read Choice & carefully planned to enhance complement the the material. Formatting to enhance readability. content. It may be a readability little hard to read. and content. Background does Background does Background does Background makes not detract from not detract from not detract from text it difficult to see text text or other text or other or other graphics. or competes with Background graphics. Choice graphics. Choice Choice of other graphics on of background is of background background foes the page. appropriate for this could have been not fit project. project. better suited for the project. 6