Review For Exam 2. Internetworking. Summary Questions. School of Business Eastern Illinois University. School of Business Eastern Illinois University
|
|
|
- Leslie Jordan
- 5 years ago
- Views:
Transcription
1 School of Business Review For Exam 2 Wednesday 10/6/2004) Abdou Illia, Fall 2004 School of Business Internetworking 3 1. Name the two most known Medium Access Control Protocols found in LANs. How they differ? 2. (a) What are the primary reasons for internetworking two or more networks? (b) What are the basic functions of a bridge? 3. How does a Transparent bridge operate? Answer: (1) Observes traffic to create routing tables (backward learning), (2) When a message arrives at a port, looks at routing table to know where to send the message. 4. 2b) Filtering messages, Forwarding messages, conversion between different frame formats
2 Medium Access Control Protocols used in LANs 4 Ethernet or CSMA/CD Most common form of LAN today. Star-wired bus is most common topology Many standards (form 1Base5 to 1000BaseT) Token Ring For LAN that use Ring topology Offered at speeds of 4, 16 and 100 Mbps. More expensive components than CSMA/CD Losing ground quickly to CSMA/CD. Ethernet and Token ring 5 Created to answer two questions: How to identify sending & receiving computers in LANs? Which computer should send? At what time? Ethernet answer: Adding Sender s & Receiver s MAC address to packets Implement a rule known as CSMA/CD Token ring answer: Adding Sender s & Receiver s MAC address to packets Implement a Token passing method: a Token circulate in the ring. Only the computer that get the token will send. Internetworking? 6 Connecting separate Networks using internetworking devices (bridges, routers, hubs, switches) Reasons for internetworking: LAN performance decrease due to growth => Break & Interconnect Need to access resources available on another network Need to share software & hardware between networks Will focus on Interconnecting LANs to LANs Interconnecting LANs to WANs
3 School of Business Internetworking (Part II) 8 1. How a Source-routing bridge differ from a transparent bridge? Answer: With Source-routing bridges packets must contain the exact path of LAN-Bridge-LAN-Bridge Source-routing bridges are found with Token ring LANs. On the other hand Transparent bridges use Routing tables to forward messages and are used to connect two Ethernet LANs or to connect an Ethernet LAN to a Token ring LAN 2. What is the purpose of a discovery frame? Answer: Allows a station to discover the path of LAN-Bridge-LAN-Bridge.. when Source-routing bridges are used. 3. In what situation does one use a Remote bridge? (Slide #4 in Internetwkg 2) 4. What are the basic functions of a router? (See slide #8 in Internetworking 2) The local area network shown in Figure 8-21 (p. 268) has two hubs (X and Y) interconnecting the workstations and servers. What workstations and servers will receive a copy of a packet if the following workstations/servers transmit a message: Workstation 1 sends a message to workstation 3: Workstation 2 sends a message to Server 1: Server 1 sends a message to workstation 3: 7. Replace hub Y with a switch. Now what workstations and servers will receive a copy of a packet if the following workstations/servers transmit a message: Workstation 1 sends a message to workstation 3: Workstation 2 sends a message to Server 1: Server 1 sends a message to workstation 3:
4 10 Your supervisor at Network Inc. wants you to provide your expertise to help a client decide what kind of bridge to interconnect two LANs located in two separate buildings in town. One of the LANs uses CSMA/CD and the other one is a Token Ring LAN. What will be your recommendation? a) Use a Source-Routing bridge b) Use a Transparent bridge c) Use a Transparent bridge, but check the features to make sure that it has the appropriate conversion function. d) Use a Remote bridge. Routers 11 Device that connect a LAN to a WAN. Functions: Conversion between frame formats Forwarding frames Making routing decisions Often firewall functions (protection) School of Business Fundamentals of Data & Signals
5 1. Distinguish between digital and analog signals in Fundamentals of Data & Signals 2. Distinguish between digital and binary transmission What is the difference between the bit rate and the baud rate? 16 Bits and Baud 14 Baud Rate = Number of clock cycles/sec In this example, 4 baud (not 4 bauds/second) Note: Number of clock cycles, not actual line changes Bit Rate = Number of bits/second In this example, 8 bits/second Bit Rate = Baud Rate * Bits per clock cycle 1 Second 10 Possible Change Not Made Equations 15 # of states 2 Bits per clock cycle = Number of possible states (Eq. 1) Bit rate Bit rate = Baud Rate * Bits per clock cycle (Eq. 2) Exercise (See next slide)
6 Exercise 16 A) If a transmission line has a Baud rate of baud, and if there are eight possible line states, what is the Bit rate? B) If you wish to send two bits per clock cycle, how many possible states must you have? Translation Devices 17 Source of Data versus Line Translator Transmission Line Source of Data Analog Line Analog Device (e.g. Tel) Digital Line Codec Digital Device (e.g. Computer) Modem DSU School of Business Fundamentals of Data & Signals (Part 2)
7 Attenuation Attenuation = Loss of Signal Strength Function of Distance and Friction within the Medium If high signals get too weak, the receiver will not be able to detected it. Decibel (db) is a relative measure of signal loss or gain of strength. db = 10 log 10 (P2 / P1), Where P2 & P1 are ending and beginning power levels (in watt) 19 (Figure 2-10 in textbook) Overall gain or loss = -10 db + 20dB - 15dB = -5dB Attenuation 20 A signal starts at a transmitter with 10 watts of power and arrived at a receiver with 5 watts of power. Calculate the loss of power in db. 1. db = 10 log 10 (P2 / P1) 2. db = 10 log 10 (5/10) 3. db = 10 log 10 (0.5) 4. db = 10 (-0.3) 5. db = -3 Q: What is the decibel loss of a signal that starts at 50 watts and experiences a 10- watt loss over a given section of cable? Q: What is the decibel loss of a signal that loses half its power during the course of transmission? What is the main advantage of digital signals over analog signals? Answer: It s easier to remove noise from digital signals (Slide #4 in Fundamentals of Data & Signals -continued) 2. What are the Tree main components (characteristics) of signals? Answer: Amplitude, Frequency and Phase 3. What is the bandwidth of a signal? (See slide # 10 in Fundamentals of Data & Signals - continued) 4. (a) Name one technique for converting digital data into digital signals. (b) Name 3 techniques for converting digital data into analog signals 4a) NRZ-L or Differential Manchester. 4b) Amplitude modulation, Frequency modulation, Phase modulation
8 22 Check additional questions about data & signals on the course website at nalquestions1.ppt Check Quiz 1 School of Business Conducted and Wireless Media (Part 1) 24 What does cross talk interference mean? How can crosstalk interference be reduced? If transmission wires are placed side by side, electromagnetical radiation is emitted by one wire and picked up by the other. Twisting pair of wire reduce crosstalk interference. What categories of twisted pair are usually used in LANs? Categories 3, 4, 5, 6, 7, 8 What are the advantages and disadvantages of STP compared to UTP? Advantage: better level of isolation from interference. Disadvantage: cost What is the main difference between Baseband coaxial cable and Broadband coaxial cable? Baseband carries digital signals, whereas broadband carries analog signals. What are the advantages of Optical fiber compared twisted pair and coaxial cable? Speed, No significant noise, No interference, Long distance Can you transmit video signal over twisted pair wire? Explain You can, but noise is going to be a serious factor.
9 Case study 25 The following figure shows a common situation in LANs. Remember : Using Category 5 UTP, the maximum segment length is 100 meters. A wall jack is a passive device and does not regenerate a signal Cat 5-UTP Optical Fiber Case study 26 Cat 5-UTP Optical Fiber If the distance between the Workstation and the Hub is more than 100 meters, what will be the problem? What solution can be used? If the cable that connect the Workstation and the Hub pass through a noisy environment (Heating or cooling mechanical room), what solution can be used? Case study 27 Cat 5-UTP Optical Fiber If the needed data rate is higher than 100 Mbps, what are the possible solutions?
10 School of Business Conducted and Wireless Media (Part 2) 29 a) Wireless transmission can experience propagation problems due to shadow zones and multipath interference. Explain. b) Describe the elements in a typical Wireless LAN. See other questions in PPT notes titled Additional questions about Conducted and Wireless Media Wireless LAN ( standard) 30 Switch UTP Access Point A CSMA/CA+ACK Radio Link Laptop Client PC Wired LAN Server Access Point B Handoff If mobile computer moves to another access point, it switches service to that access point
Review For Exam 2. Fundamentals of Data & Signals. Summary Questions. School of Business Eastern Illinois University
School of Business Eastern Illinois University Review For Exam 2 March 9, 2010 Abdou Illia, Spring 2010 School of Business Eastern Illinois University Fundamentals of Data & Signals Summary Questions 3
Internetworking is connecting two or more computer networks with some sort of routing device to exchange traffic back and forth, and guide traffic on
CBCN4103 Internetworking is connecting two or more computer networks with some sort of routing device to exchange traffic back and forth, and guide traffic on the correct path across the complete network
FINAL EXAM REVIEW PLEASE NOTE THE MATERIAL FROM LECTURE #16 at the end. Exam 1 Review Material
FINAL EXAM REVIEW PLEASE NOTE THE MATERIAL FROM LECTURE #16 at the end Chapters in the book 1, 2, 3, 5, 6 Exam 1 Review Material Topics You are also responsible for the reading in the chapters understanding
Comp277 Assignment 1 Fall 2011 Due 20 th December 2011 at 11:00am
Question 1 1. Which of the following are related to two crucial tasks of a network interface cards? a. Establishes and manages the computer s network connection b. Connect the different parts of a motherboard
Chapter Seven. Local Area Networks: Part 1. Data Communications and Computer Networks: A Business User s Approach Seventh Edition
Chapter Seven Local Area Networks: Part 1 Data Communications and Computer Networks: A Business User s Approach Seventh Edition After reading this chapter, you should be able to: State the definition of
CS 3201 Computer Networks 2014/2015 Handout: Lab 3
Lab Content: - Network Devices - Ethernet Network - MAC Address Network Devices: - Hubs, MAU s, and Repeaters Hubs Hubs are one of the most important components of a network because they act as a central
2. LAN Topologies Gilbert Ndjatou Page 1
2. LAN Topologies Two basic categories of network topologies exist, physical topologies and logical topologies. The physical topology of a network is the cabling layout used to link devices. This refers
Introduction to Networking Devices
Introduction to Networking Devices Objectives Explain the uses, advantages, and disadvantages of repeaters, hubs, wireless access points, bridges, switches, and routers Define the standards associated
Integrating Information Systems: Technology, Strategy, and Organizational Factors
MASSACHUSETTS INSTITUTE OF TECHNOLOGY SLOAN SCHOOL OF MANAGEMENT 15.565 Integrating Information Systems: Technology, Strategy, and Organizational Factors 15.578 Global Information Systems: Communications
More on LANS. LAN Wiring, Interface
More on LANS Chapters 10-11 LAN Wiring, Interface Mostly covered this material already NIC = Network Interface Card Separate processor, buffers incoming/outgoing data CPU might not be able to keep up network
Lesson 1: Network Communications
Lesson 1: Network Communications This lesson introduces the basic building blocks of network communications and some of the structures used to construct data networks. There are many different kinds of
ก ก Information Technology II
ก ก 202103 Information Technology II ก ก ก ก ก (LAN), ก LAN, ก ก (LAN) ก ก ก LAN ก LAN ก LAN Topology Bus LAN Star LAN Ring LAN Wireless LAN Wireless LAN Wireless ก (LAN) ก ก ก LAN ก LAN WAN ก Random Access
TCP/IP and OSI Model Ethernet LAN Network Cables Network Devices Network Topologies Redundant Internet Connections VLANs Wireless LANs Upcoming
2 TCP/IP and OSI Model Ethernet LAN Network Cables Network Devices Network Topologies Redundant Internet Connections VLANs Wireless LANs Upcoming Network Technologies 3 4 Elements of the Network Sender
Physical Layer V What does the physical layer provide?
SEMESTER 1 Chapter 8 Physical Layer V 4.0 90 Points 8.1.1 What does the physical layer provide? What are the four elements of delivering frames across the media? 8.1.2 What are the three basic forms of
Introduction to LAN Topologies Cabling. 2000, Cisco Systems, Inc. 3-1
Introduction to LAN Topologies Cabling 2000, Cisco Systems, Inc. 3-1 Objectives Upon completion of this chapter, you will be able to perform the following tasks: Media / Cabling Local Area Network Cabling
Fundamentals of Networking Introduction to Networking Devices
Fundamentals of Networking Introduction to Networking Devices Kuldeep Sonar 1 NIC (Network Interface Card) A network interface provides connectivity from an end-user PC or laptop to the public network.
CHAPTER 2 - NETWORK DEVICES
CHAPTER 2 - NETWORK DEVICES TRUE/FALSE 1. Repeaters can reformat, resize, or otherwise manipulate the data packet. F PTS: 1 REF: 30 2. Because active hubs have multiple inbound and outbound connections,
Lecture 05 Chapter 16 High Speed LANs
NET 456 High Speed Networks Lecture 05 Chapter 16 High Speed LANs Dr. Anis Koubaa Reformatted slides from textbook Data and Computer Communications, Ninth Edition by William Stallings, 1 (c) Pearson Education
Chapter 4 NETWORK HARDWARE
Chapter 4 NETWORK HARDWARE 1 Network Devices As Organizations grow, so do their networks Growth in number of users Geographical Growth Network Devices : Are products used to expand or connect networks.
3 Chapter Introduction. 3.2 Copper Cable
3 Chapter 3 3.1 Introduction The Network Media is the device that physically carries the data from computer to computer. The three major types of network media are: Copper Cable Fiber-Optic Cable Wireless
Come & Join Us at VUSTUDENTS.net
Come & Join Us at VUSTUDENTS.net For Assignment Solution, GDB, Online Quizzes, Helping Study material, Past Solved Papers, Solved MCQs, Current Papers, E-Books & more. Go to http://www.vustudents.net and
Introduction to Networks and the Internet
Introduction to Networks and the Internet HTML tutorial today. Announcements CMPE 80N Spring 2003 Week 5 1 2 MAC Protocols MAC Protocols Round-robin. Scheduled-access. Contention-based. Contention-based
Full file at
ch02 True/False Indicate whether the statement is true or false. 1. The number of nodes on a network and the length of cable used influence the quality of communication on the network. 2. Repeaters and
The NIC is the main interface between the computer and the network cable.
The NIC is the main interface between the computer and the network cable. 50 Parallel data into serial data. Memory CPU Computer 10011001 Cable 1-0-0-1-1-0-0-1 NIC 51 Considerations when selecting the
IEEE 802 LANs SECTION C
IEEE 802 LANs SECTION C Outline of the Lecture Basic characteristics of LAN Topology Transmission Media MAC IEEE 802 LANs 802.3 - CSMA/CD based (Ethernet) 802.4 Token bus-based 802.5 Token ring-based Comparison
Unit 10. Networks. Copyright 2005 Heathkit Company, Inc. All rights reserved.
Unit 10 Networks Copyright 2005 Heathkit Company, Inc. All rights reserved. The basic components of a network: Connections (Physical Medium) Protocols (Common language) Services (Clients, Servers, and
(Network Programming) Basic Networking Hardware
EEE 448 Computer Networks with (Network Programming) Basic Networking Hardware Lecture #2 Dept of Electrical and Electronics Engineering Çukurova University Agenda What is a network device? Network Media
CARRIER SENSE MULTIPLE ACCESS (CSMA):
Lecture Handout Computer Networks Lecture No. 8 CARRIER SENSE MULTIPLE ACCESS (CSMA): There is no central control management when computers transmit on Ethernet. For this purpose the Ethernet employs CSMA
Data Communication. Introduction of Communication. Data Communication. Elements of Data Communication (Communication Model)
Data Communication Introduction of Communication The need to communicate is part of man s inherent being. Since the beginning of time the human race has communicated using different techniques and methods.
Introduction to LAN Protocols
CHAPTER 2 Introduction to LAN Protocols This chapter introduces the various media-access methods, transmission methods, topologies, and devices used in a local area network (LAN). Topics addressed focus
Data and Computer Communications
Data and Computer Communications Chapter 16 High Speed LANs Eighth Edition by William Stallings Why High Speed LANs? speed and power of PCs has risen graphics-intensive applications and GUIs see LANs as
Lecture #25: Networks and Communications. Communication and Networks. What will we learn?
Lecture #25: Networks and Communications Communication and Networks What will we learn? How a communications system works What a network is What networks used for What network operating systems do What
Local Area Networks. Aloha Slotted Aloha CSMA (non-persistent, 1-persistent, p-persistent) CSMA/CD Ethernet Token Ring
Local Area Networks Aloha Slotted Aloha CSMA (non-persistent, 1-persistent, p-persistent) CSMA/CD Ethernet Token Ring Networks: Local Area Networks 1 Network Layer Network Layer LLC 802.2 Logical Link
Goal and Outline. Computer Networking. What Do We Need? Today s Story Lecture 3: Packet Switched Networks Peter Steenkiste
Goal and Outline 15-441 15-641 Computer Networking Lecture 3: Packet Switched Networks Peter Steenkiste Fall 2016 www.cs.cmu.edu/~prs/15 441 F16 Goal: gain a basic understanding of how you can build a
CN [Network Devices]
![CN [Network Devices]](/thumbs/83/88538687.jpg "CN [Network Devices]")
Q`.1 Explain Repeater. A repeater is a device that operates only at the PHYSICAL layer. A repeater can be used to increase the length of the network by put the effect on the signal. It connects two segments
3.5 CONNECTING DEVICES
3.5 CONNECTING DEVICES LANs or WANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs and WANs together we use connecting devices. Connecting devices
NETWORK SECURITY ITEC 435
NETWORK SECURITY ITEC 435 Agenda Chapter 2: Introduction to Networking Introduction to Networking Networking Fundamentals Reasons to Network Getting the Message Across Analog Information on an Analog Medium
Network Media and Layer 1 Functionality
Network Media and Layer 1 Functionality BSAD 146 Dave Novak Dean, Chapter 3, pp 93-124 Objectives Introduction to transmission media Basic cabling Coaxial Twisted pair Optical fiber Basic wireless (NIC)
Local Area Network Overview
Local Area Network Overview Chapter 15 CS420/520 Axel Krings Page 1 LAN Applications (1) Personal computer LANs Low cost Limited data rate Back end networks Interconnecting large systems (mainframes and
RMIT University. Data Communication and Net-Centric Computing COSC 1111/2061/1110. Lecture 8. Medium Access Control Methods & LAN
RMIT University Data Communication and Net-Centric Computing COSC 1111/2061/1110 Medium Access Control Methods & LAN Technology Slide 1 Lecture Overview During this lecture, we will Look at several Multiple
with its cables, connectors, Switches, Hubs and topologies
Introduction to LAN www.mycsvtunotes.in with its cables, connectors, Switches, Hubs and topologies LAN Small interconnected computers or workstations within a building or small area up to 10 Kms. Small
Chapter 10: Local Area Networks
Chapter 10: Local Area Networks MULTIPLE CHOICE 1. CSMA stands for: a. Client-Server Multi-Access c. Carrier Server Master Application b. Carrier Sense Multiple Access d. none of the above 2. The CD in
LANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs, connecting devices are needed.
LAN interconnecting devices INTRODUCTION LANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs, connecting devices are needed. Connecting devices
LAN Systems. Bus topology LANs
Bus topology LANs LAN Systems Design problems: not only MAC algorithm, not only collision domain management, but at the Physical level the signal balancing problem (signal adjustment): Signal must be strong
This PDF document is a sample chapter from the book...
This PDF document is a sample chapter from the book... To order this book, print the last page of this document. Copyright 2001 Society of Manufacturing Engineers Chapter 37 Manufacturing Networks 37.1
Chapter 8 OSI Physical Layer
Chapter 8 OSI Physical Layer Upper OSI layer protocols prepare data from the human network for transmission to its destination. The Physical layer controls how data is placed on the communication media.
ET4254 Communications and Networking 1
Topic 10:- Local Area Network Overview Aims:- LAN topologies and media LAN protocol architecture bridges, hubs, layer 2 & 3 switches 1 LAN Applications (1) personal computer LANs low cost limited data
Chapter 4. The Medium Access Control Sublayer. Points and Questions to Consider. Multiple Access Protocols. The Channel Allocation Problem.
Dynamic Channel Allocation in LANs and MANs Chapter 4 The Medium Access Control Sublayer 1. Station Model. 2. Single Channel Assumption. 3. Collision Assumption. 4. (a) Continuous Time. (b) Slotted Time.
Contents. Introduction to Networking. Preface...i. Introduction... xix
Contents Introduction to Networking Introduction to Networking Preface...i Key Topics...i Course Objectives...ii Pedagogical Features...ii Learning Objectives, Unit Summaries, Discussion Questions, and
1. What type of network cable is used between a terminal and a console port? cross-over straight-through rollover patch cable 2.
1. What type of network cable is used between a terminal and a console port? cross-over straight-through rollover patch cable 2. Refer to the exhibit. A network administrator has decided to use packet
Module 5. Broadcast Communication Networks. Version 2 CSE IIT, Kharagpur
Module 5 Broadcast Communication Networks Lesson 5 High Speed LANs Token Ring Based Specific Instructional Objectives On completion, the student will be able to: Explain different categories of High Speed
Darshan Institute of Engineering & Technology for Diploma Studies
1. Explain different network devices in detail. Or Explain NIC (Network Interface Card) in detail. Network interface cards are add on cards as hardware cards on the motherboard. This is additional hardware
Introduction to LAN Protocols
CHAPTER 2 Chapter Goals Learn about different LAN protocols. Understand the different methods used to deal with media contention. Learn about different LAN topologies. This chapter introduces the various
Chapter 15 Local Area Network Overview
Chapter 15 Local Area Network Overview LAN Topologies Bus and Tree Bus: stations attach through tap to bus full duplex allows transmission and reception transmission propagates throughout medium heard
Getting Connected (Chapter 2 Part 4) Networking CS 3470, Section 1 Sarah Diesburg
Getting Connected (Chapter 2 Part 4) Networking CS 3470, Section 1 Sarah Diesburg Five Problems Encoding/decoding Framing Error Detection Error Correction Media Access Five Problems Encoding/decoding Framing
Data Communications. Course Design Data Communications. Pre/Post Test (80 Questions/80 Points) Upon Request None No No No
Data Communications Course Design 2005-2006 Course Information Organization Division EASTERN ARIZONA COLLEGE Business Course Number CMP 205 Title Credits 3 Developed by Lecture/Lab Ratio Transfer Status
Objectives. Learn how computers are connected. Become familiar with different types of transmission media
Objectives Learn how computers are connected Become familiar with different types of transmission media Learn the differences between guided and unguided media Learn how protocols enable networking 2 Objectives
Chapter 4: Network Access
4.0.1.1 Chapter 4: Network Access To support our communication, the OSI model divides the functions of a data network into layers. Each layer works with the layers above and below to transmit data. 4.0.1.2
end systems, access networks, links circuit switching, packet switching, network structure
Introduction Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge end systems, access networks, links 1.3 Network core circuit switching, packet switching, network structure 1.4 Delay, loss and
10- and 100-Mbps Ethernet
Ethernet Basics 10-Mbps Ethernet Three 10-Mbps Ethernet standards: 10BASE5 10BASE2 10BASE-T 10BASE2 and 10BASE5 were around more than 20 years and have been replaced by newer alternatives 10BASE-T s use
COMPUTER SKILLS COMP101
COMPUTER SKILLS COMP101 Chapter 4 Introduction to Computer Networks Definitions and Terminologies Computer Network A network consists of two or more computers that are linked in order to share resources
Local Area Networks (LANs) & Networks Inter-Connection Chapter 5
CT 1502 Planning and Design of Communication Networks Local Area Networks (LANs) & Networks Inter-Connection Chapter 5 Nada Al Dosary Aldosary.na@gmail.com http://ct1502.edublogs.org 1 Outlines Understanding
Introduction to Computer Science (I1100) Networks. Chapter 6
Networks Chapter 6 501 Outline How does Networks and Internet Work? Networking devices Physical Network topology Types of Network Intranets - extranets Copper Media IP Address 502 How does Networks and
Computer Networks and Internet
Computer Networks and Internet Objectives Computer Networks Internet 2 Computer Networks Introducing Computer Networks A computer network consists of two or more computers linked together to exchange data
Chapter 6 Connecting Device
Computer Networks Al-Mustansiryah University Elec. Eng. Department College of Engineering Fourth Year Class Chapter 6 Connecting Device 6.1 Functions of network devices Separating (connecting) networks
Full file at
Guide to Networking Essentials, Sixth Edition 2-1 Chapter 2 Network Hardware Essentials At a Glance Instructor s Manual Table of Contents Overview Objectives Tips Quick Quizzes Class Discussion Topics
We are going to see a basic definition of the devices you can find in a corporate wired network, so you can understand basic IT engineering jargon.
Computer network devices, also known as communication devices, are the backbone of a data communication network. In this category we can find routers, switches, hubs, LAN cards, gateways, modems, hardware
Different network topologies
Network Topology Network topology is the arrangement of the various elements of a communication network. It is the topological structure of a network and may be depicted physically or logically. Physical
Computer Networks. Week 04 Media and Devices. College of Information Science and Engineering Ritsumeikan University
Computer Networks Week 04 Media and Devices College of Information Science and Engineering Ritsumeikan University Network Media and Devices l When you build a network, the network hardware may be used
Computer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and
Computer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and Networking Technologies Mean? p. 3 What Is a Computer Network?
CCNA 1 Capítulo 8 OSI Physical Layer. 2004, Cisco Systems, Inc. All rights reserved.
CCNA 1 Capítulo 8 OSI Physical Layer 1 Physical Layer Protocols & Services There are three basic forms of network media on which data is represented: Copper cable Fiber Wireless 2 Physical Layer Protocols
MODEL ANSWER PAPER SUBJECT: COMPUTER ORGANIZATION & OPERATING SYSTEM (THEORY)
MODEL ANSWER PAPER SUBJECT: COMPUTER ORGANIZATION & OPERATING SYSTEM (THEORY) STD: XII Max Marks: 50 Course: Computer Technique Time: 2 hrs Q1A.) Fill in the blanks by choosing the appropriate words from
Lecture (07) Media & Switching III Ethernet Protocol & Network Hardware Components
Lecture (07) Media & Switching III Ethernet Protocol & Network Hardware Components By: Dr. Ahmed ElShafee ١ Agenda Ethernet Protocol Physical layer Physical layer devices The Data Link Layer ٢ Ethernet
Review: Networking Fall Final
Review: Networking Fall Final Question 1 of 43 You have implemented a network where each device provides shared files with all other devices on the network. What type of network do you have? Peer to peer
ROYAL INSTITUTE OF INFORMATION & MANAGEMENT
ROYAL INSTITUTE OF INFORMATION & MANAGEMENT BASICS NETWORKING CHAPTER 1 Networking Basics to Networking Advantages of Networking Types of Network 1 Local Area Network (LAN) LAN features Basic LAN components
Outline: Connecting Many Computers
Outline: Connecting Many Computers Last lecture: sending data between two computers This lecture: link-level network protocols (from last lecture) sending data among many computers 1 Review: A simple point-to-point
COMPONENTS OF DATA COMMUNICATION
COMPONENTS OF DATA COMMUNICATION ANALOG AND DIGITAL TRANSMISSION An analog signal is one that is continuous with respect to time and may take on any value within a given range of values. Eg Human voice.
A+ Guide to Managing & Maintaining Your PC, 8th Edition. Chapter 16 Networking Types, Devices, and Cabling
A+ Guide to Managing & Maintaining Your PC, Chapter 16 Networking Types, Devices, and Cabling Objectives Learn about network types and topologies Learn about the hardware used to build local networks Learn
Networking Fundamentals
Networking Fundamentals Cable types and connectors Fiber A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves. Fiber optics
What is a Network? A connection of two or more computers so that they can share resources.
NETWORKS What is a Network? A connection of two or more computers so that they can share resources. Network Benefits Remote access Sharing files & resources Communication Cost Maintenance Communication
Brief Summary of the Chapter: CHAPTER 1 NETWORKING AND OPEN STANDARDS In this chapter we are going to study about computer Networks, associated terminology and related concept along with network devices.
Concept Questions Demonstrate your knowledge of these concepts by answering the following questions in the space provided.
83 Chapter 6 Ethernet Technologies and Ethernet Switching Ethernet and its associated IEEE 802.3 protocols are part of the world's most important networking standards. Because of the great success of the
LAN Overview (part 2) Interconnecting LANs - Hubs
LAN Overview (part 2) CSE 3213 Fall 2011 1 November 2011 Interconnecting LANs - Hubs active central element of star layout each station connected to hub by two UTP lines hub acts as a repeater limited
Computer Networks. Lecture 8 Local Area Network, IEEE 802.x
Computer Networks Lecture 8 Local Area Network, IEEE 802.x Local area network A local area network (LAN) is a computer network that interconnects computers within a limited area such as a home, school,
ECE 333: Introduction to Communication Networks Fall Lecture 19: Medium Access Control VII
ECE : Introduction to Communication Networks Fall 2002 Lecture 9: Medium Access Control VII More on token ring networks LAN bridges and switches. More on token rings In the last lecture we began discussing
Data Communication. Chapter # 1: Introduction. By: William Stalling
Data Communication Chapter # 1: By: Introduction William Stalling Data Communication The exchange of data between two devices via some form of transmission medium such as cable wire. For data communications
Guide to Networking Essentials Fifth Edition. Chapter 2 Network Design Essentials
Guide to Networking Essentials Fifth Edition Chapter 2 Network Design Essentials Objectives Explain the basics of a network layout Describe the standard networking topologies Explain the variations on
Chapter 9 & 12: Wired LAN
hapter 9 & 12: Wired LAN Abdullah Konak School of Information Sciences and Technology Penn State Berks LAN Applications and Models LANs P LANs (Office/Home Networks) High Speed Office Networks Backend
end systems, access networks, links circuit switching, packet switching, network structure
Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge end systems, access networks, links 1.3 Network core circuit switching, packet switching, network structure 1.4 Delay, loss and throughput
IT4405 Computer Networks (Compulsory)
IT4405 Computer Networks (Compulsory) INTRODUCTION This course provides a comprehensive insight into the fundamental concepts in data communications, computer network systems and protocols both fixed and
Lecture 8: Switched Ethernet and Collision Domains
Lecture 8: Switched Ethernet and Collision Domains Dr. Mohammed Hawa Electrical Engineering Department University of Jordan EE426: Communication Networks Ethernet Installations 2 1 Twisted Pair and Fiber
CSC 8560 Computer Networks: Link and Physical Layers
CSC 8560 Computer Networks: Link and Physical Layers Professor Henry Carter Fall 2017 Link Layer 6.1 Introduction and services 6.2 Error detection and correction 6.3 Multiple access protocols 6.4 LANs
Data Link Layer, Part 5. Medium Access Control
CS 455 Medium Access Control, Page 1 Data Link Layer, Part 5 Medium Access Control These slides are created by Dr. Yih Huang of George Mason University. Students registered in Dr. Huang s courses at GMU
Data Communication. Introduction
Data Communication Introduction Course Information Assistant Instructor Reza Hassanpour Faris Serdar Taşel Office: L214 Office: L205 Phone: 2331338 Phone: 2331357 Email: reza@cankaya.edu.tr Email: fst@cankaya.edu.tr
High Level View. EE 122: Ethernet and Random Access protocols. Medium Access Protocols
High Level View EE 122: Ethernet and 802.11 Ion Stoica September 18, 2002 Goal: share a communication medium among multiple hosts connected to it Problem: arbitrate between connected hosts Solution goals:
06/02/2006. Local & Metropolitan Area Networks 1. INTRODUCTION. Why Study Local and Metropolitan Area Networks? ACOE322. Lecture 1 Introduction
Local & Metropolitan Area Networks ACOE322 Lecture 1 Introduction 1 1. INTRODUCTION In this section we will cover : 1. Overview of data communications and networking 2. Definition and overview of LANs,
M242 COMPUTER NETWORS AND SECURITY
M242 COMPUTER NETWORS AND SECURITY UNIT - I DATA COMMUNICATIONS 1.1 Data Communications 1. What is data communication? Explain its components Data communication is a process of transferring data electronically
Part3. Local Area Networks (LAN)
Part3 Local Area Networks (LAN) LAN Characteristics Small geographical area Relatively high data rate Single management Topologies Bus, star, ring Specifications at physical and data link layer mostly
LAN Topologies and Transmission Media
LAN Topologies and Transmission Media LANs performance Depends on:- LAN topology. Used transmission medium. Used medium access control (MAC) protocol. LANs performance Choice of the transmission medium
WEEK 9 TCP/IP, PHYSICAL AND DATA LINK LAYERS
WEEK 9 TCP/IP, PHYSICAL AND DATA LINK LAYERS PHYSICAL LAYER Physical (hardware) layer: lowest level layer of the Internet Model. - Contains the actual network hardware cables, antennas, network interfaces