OCR LEVEL 3 CAMBRIDGE TECHNICAL CERTIFICATE/DIPLOMA IN IT COMPUTER NETWORKS R/601/7320 LEVEL 3 UNIT 7 GUIDED LEARNING HOURS: 60 UNIT CREDIT VALUE: 10 COMPUTER NETWORKS R/601/7320 LEVEL 3 UNIT 7 AIM OF THE UNIT This unit aims to give the learners an understanding of the key components‚ the network protocols and the services provided by network systems. Learners will develop skills required to ensure network security‚ gain an understanding to the functions of hardware and software
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QUESTION1 Power Problems Alternating current (AC)‚ which is “food” to PCs and other network devices‚ is normally 110 volts and changes polarity 60 times a second (or 60 Hertz). These values are referred to as line voltage. Any deviation from these values can create problems for a PC or other network device. Power problems fall into three categories: * Overage * Underage * Quality Power Overage Problems During a power overage‚ too much power is coming into the computer. Power overage
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Axia College Material Appendix D Career Self-Reflection I Maintaining patient files occurs within various types of health care and health care settings. One goal of this course is to help you contemplate choices for your career. From what you’ve learned about medical records and health care settings so far‚ highlight the choices that best reflect your career interests and explain your reasons: 1. My career interest at this time is more oriented toward: · Primary care—point of first
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Appendix Cancer Cancer of the appendix‚ although not a common type of cancer‚ is a very serious cancer. Even though the appendix does not have a function in the body‚ cancer of the appendix will still harm the individual like any other cancer would. Appendix cancer begins with cells of the appendix proliferate abnormally and create a mass of cells‚ called a tumor. Various types of tumors can grow in the appendix and result in cancer. To begin‚ carcinoid tumors are small tumors that show no symptoms
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Models Network Management: Principles and Practice © Mani Subramanian 2000 1 Chapter 4 Case Histories • AT&T Network Management Centers • Network Operations Center • Network Control Centers • Monitors the network status • Self-healing • CNN World Headquarters • Performance Management • Fault Management • Monitoring alarms • Determines causes of failures (Artificial Intelligence) • Centralized troubleshooting of NIC (remotely) • Performance degradation due to NMS • Network may come down
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2. Identify one disadvantage of networking computers together. The disadvantages of networking computers are hacking and pirating in the networks is very easy and it can lead to information damage or robbery and also if one compute is affected by a virus it can spread to the other easily. 3. What technology allows computer networks without wires? Wireless networking allows computer networks without wires. 4. Describe the difference between a LAN and a WAN. LAN is local area network‚ it consists
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IPv4 and ipv6 Differences IPv6 Optional Extras: Fixed length (40 Bits‚ as opposed to 32)‚ but able to extend Header change to aid QoS Checksum: Removed checksum to reduce processing time at each hop. Motivation: Requirement of large number of addresses Stateless Auto-configuration Anycast address route to “best” of several servers – (No broadcast) provides flexibility where we don’t care about which route the data goes through Route Optimization: necessary to improve the internet performance
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------------------------------------------------- Associate Level Material Appendix B History Matrix Directions: Using the matrix‚ list at least five events or major concepts from each of the three periods in the history of modern personality psychology. 1930 - 1950 | 1950 - 1970 | 1970 - Present | Example: * Learning from animal responses. 1. “Personality Psychology was born within psychology departments in American universities.” 2. “The first issue of the journal Character
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COEN 233 Computer Networks Department of Computer Engineering Santa Clara University Dr. Ming-Hwa Wang Phone: (408) 525-2564 Course website: Office Hours: Fall Quarter 2012 Email address: mwang2@engr.scu.edu http://www.cse.scu.edu/~mwang2/network/ Monday & Wednesday 9:00-9:30pm Name: ID: Score: Due date: 7:10pm‚ January 14‚ 2013 Problem 1 What is the ISO OSI protocol stack? Please describe the functionality for each layer. ---------The answer is in your text book. Problem 2 Please give the
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Material Appendix G Wireless LAN Vulnerabilities Matrix Complete the following matrix by filling in the blank boxes in the table. Security protection Brief description Vulnerabilities Prevention (if any) MAC address filtering Only allows access to a device if its MAC address matches that of a pre-approved list on the router. MAC Spoofing Don’t rely on MAC filtering alone. Open system authentication (SSID beaconing) Disables SSID from being broadcast so wireless networks are harder
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