Ch1 2ed 29_dec03
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The document discusses slides created by authors JFK and KWR for their networking textbook. It states that the slides can be freely used and modified by others as long as the source and copyright are mentioned if used substantially unaltered or posted online. The authors thank readers for using the slides and enjoying them.
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![[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 1 Computer Networks and the Internet Computer Networking: A Top Down Approach Featuring the Internet , 2 nd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2002.](https://image.slidesharecdn.com/ch12ed29dec03-120225112552-phpapp01/85/Ch1-2ed-29_dec03-1-320.jpg)
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- It provides an overview of topics to be covered in the chapter including what the Internet is, its structure at the network edge and core, performance issues, protocol layers, security, and history.
- The presentation will use examples from the Internet to help students understand networking concepts and terminology at a high level before covering them in more depth later.
Chapter_1 V6.1 absolute java original slides
The document introduces a set of slides for a lecture on computer networking, noting that the slides can be freely used and modified provided proper attribution is given. It includes a title slide with the course name and authors, as well as an overview slide of the topics that will be covered in the chapter, including what the Internet is, network edge components, the network core, performance factors, protocol layers, security, and the history of networking.
Lecture 01
This document outlines the syllabus for the 15-744 Computer Networking course. It introduces the professor, TAs, and course objectives. The course will cover networking from the network layer to application layer, focusing on protocol rules, algorithms, and tradeoffs. Topics will include routing, transport, naming systems, and recent areas like multicast, mobility, and security. Assignments include problem sets, reading responses, a class project, and exams. The next lecture will discuss design considerations for splitting functionality across layers and nodes.
lec 3 4 Core Delays Thruput Net Arch.ppt
The document provides an overview of key topics from Chapter 1 of the textbook "Computer Networking: A Top Down Approach". It discusses the basic structure of networks including end systems, access networks, and the network core. It describes two fundamental methods for transferring data through a network: circuit switching and packet switching. Circuit switching reserves resources along the transmission path for the duration while packet switching uses network resources on demand. The document also examines concepts like delay, loss, throughput, and the layered structure of network protocols.
preKnowledge-InternetNetworking.ppt
This document provides an overview of the CIS 3360: Security in Computing course being taught by Cliff Zou in Spring 2012. The objectives of the course are to obtain basic knowledge of computer networking, the Internet, network applications and protocols like TCP/IP. It introduces some key concepts like the layered Internet protocol stack, packet switching, and the hierarchical structure of the Internet as a network of networks consisting of end systems, routers, and communication links. Example applications and protocols for each layer are also discussed at a high level.
preKnowledge-InternetNetworking Android's mobile operating system is based on...
This document provides an overview of the objectives and topics to be covered in the CIS 3360: Security in Computing course. The objectives include obtaining basic knowledge of computer networking, the Internet, network protocols like TCP/IP, and assigned reading materials. The lecture materials will cover topics like a brief history of the Internet, components and applications of the Internet, the hierarchical structure of networks, protocols like TCP and IP, and addressing processes using ports and IP addresses.
Chapter 1 v6.1
The document discusses the structure of the Internet as a network of networks. It describes how access ISPs connect end systems to the Internet. To scale efficiently, access ISPs connect to regional ISPs, which in turn connect to global transit ISPs. This hierarchy of interconnections forms the complex network of networks that is the Internet. Economic agreements between customer and provider ISPs drive this evolved structure.
nv.ppt
Everything you need to know about network troubleshooting can be learned in elementary school. Networking involves hardware and software that allows computers to communicate. No two networks are exactly alike. Basic network components include end stations, applications, and the network itself. The OSI model provides a standard way to understand how data moves through a network via different layers. TCP/IP is the most common network protocol and uses IP for addressing and routing and TCP for reliable data delivery. Gathering basic network statistics is an important part of troubleshooting.
Review Questions -11.Is web server an end system A. There is no.pdf
Review Questions -1
1.Is web server an end system ?
A. There is no difference between a host and an end system. In the internet, all devices are called
hosts and end systems. So, hosts and end systems are used interchangeably. The types of end
systems are PCs, Workstations, Web servers, email servers, PDAs, TVs, Cell Phones, Tablets,
etc
2. which service was invented first place them in order -web, first email
program,Ethernet,TCP/IP
A. 1980: Ethernet standard introduced
1982: TCP/IP protocol suite formalized
1991: World Wide Web (WWW)
1996: Hotmail free web-based e-mail
3. packet switching the store-and-forward feature why?
A. Prior to the deployment of the Internet, computers were connected via a variety of point-to-
point techniques, with many smaller computers using dial-up connections. The UUCP store-and-
forward protocols allowed a message (typically e-mail) to move across the collection of
computers and eventually reach its destination. Late in the 20th century, store and forward
techniques evolved into packet switching which replaced it for most purposes.
4. our internet has a full mesh topology true or false Why?
A.True, A mesh network is a local area network (LAN), wireless local area network (WLAN) or
virtual LAN (VLAN) that employs one of two decentralized connection arrangements: full mesh
topology or partial mesh topology. In a full mesh topology, each network node(workstation or
other device) is connected directly to each of the others. In a partial mesh topology, some nodes
are connected to all the others, but others are only connected to those nodes with which they
exchange the most data.
5. how many types of network delays? What are they?
A. Network delay is an important design and performance characteristic of a computer network
or telecommunications network. All of us want Internet and its services to be able to move as
much data as we want between two end users or hosts, instantaneously and without any loss of
data. Unfortunately, this is just an imaginary perception that is cannot be done in reality. Infact
computer networks necessarily introduce delays between hosts and can actually lose packets.
· Processing delay – time routers take to process the packet header
· Queuing delay – time the packet spends in routing queues
· Transmission delay – time it takes to push the packet\'s bits onto the link
· Propagation delay – time for a signal to reach its destination
6. what are the difference between transmission and propagation delay?
A. Propagation delay is the time taken by a bit(Mostly MSB ,Here 1) to reach from sender(A) to
receiver(B). Transmission Delay: This is the amount of time required to transmit all of the
packet\'s bits into the link. Transmission delays are typically on the order of microseconds or less
in practice
Propagation delay is how long it takes one bit to travel from one end of the \"wire\" to the other
(it\'s proportional to the length of the wire, crudely).
Transmission delay is how long it takes to.
Networks (Distributed computing)
This document discusses data networking and client-server communication. It covers distributed systems, network protocols, the OSI reference model, networking terminology like LANs and topologies, transmission networks, Ethernet, connecting to the internet, transport protocols like TCP and UDP, and IP addressing. Key concepts include layered network protocols, circuit-switched vs packet-switched networks, and connection-oriented vs connectionless protocols.
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preKnowledge-InternetNetworking Android's mobile operating system is based on...
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Ch1 2ed 29_dec03
- 5. “Cool” internet appliances World’s smallest web server http://www-ccs.cs.umass.edu/~shri/iPic.html IP picture frame http://www.ceiva.com/ Web-enabled toaster+weather forecaster
- 19. Circuit Switching: TDMA and TDMA FDMA frequency time TDMA frequency time 4 users Example:
- 39. Physical Media
- 42. Tier-1 ISP: e.g., Sprint Sprint US backbone network
- 55. “ Real” Internet delays and routes 1 cs-gw (128.119.240.254) 1 ms 1 ms 2 ms 2 border1-rt-fa5-1-0.gw.umass.edu (128.119.3.145) 1 ms 1 ms 2 ms 3 cht-vbns.gw.umass.edu (128.119.3.130) 6 ms 5 ms 5 ms 4 jn1-at1-0-0-19.wor.vbns.net (204.147.132.129) 16 ms 11 ms 13 ms 5 jn1-so7-0-0-0.wae.vbns.net (204.147.136.136) 21 ms 18 ms 18 ms 6 abilene-vbns.abilene.ucaid.edu (198.32.11.9) 22 ms 18 ms 22 ms 7 nycm-wash.abilene.ucaid.edu (198.32.8.46) 22 ms 22 ms 22 ms 8 62.40.103.253 (62.40.103.253) 104 ms 109 ms 106 ms 9 de2-1.de1.de.geant.net (62.40.96.129) 109 ms 102 ms 104 ms 10 de.fr1.fr.geant.net (62.40.96.50) 113 ms 121 ms 114 ms 11 renater-gw.fr1.fr.geant.net (62.40.103.54) 112 ms 114 ms 112 ms 12 nio-n2.cssi.renater.fr (193.51.206.13) 111 ms 114 ms 116 ms 13 nice.cssi.renater.fr (195.220.98.102) 123 ms 125 ms 124 ms 14 r3t2-nice.cssi.renater.fr (195.220.98.110) 126 ms 126 ms 124 ms 15 eurecom-valbonne.r3t2.ft.net (193.48.50.54) 135 ms 128 ms 133 ms 16 194.214.211.25 (194.214.211.25) 126 ms 128 ms 126 ms 17 * * * 18 * * * 19 fantasia.eurecom.fr (193.55.113.142) 132 ms 128 ms 136 ms traceroute: gaia.cs.umass.edu to www.eurecom.fr Three delay measurements from gaia.cs.umass.edu to cs-gw.cs.umass.edu * means no response (probe lost, router not replying) trans-oceanic link
- 63. Layering: physical communication application transport network link physical application transport network link physical application transport network link physical application transport network link physical network link physical data data
- 64. Layering: physical communication Switching Hub application transport network link physical application transport network link physical application transport network link physical application transport network link physical network link physical data data link physical
Editor's Notes
- Two simple multiple access control techniques. Each mobile’s share of the bandwidth is divided into portions for the uplink and the downlink. Also, possibly, out of band signaling. As we will see, used in AMPS, GSM, IS-54/136