Beej ’s Guide to Network Programming Using Internet Sockets Version 1.5.4 (17-May-1998) [http://www.ecst.csuchico.edu/~beej/guide/net] Intro Hey! Socket programming got you down? Is this stuff just a little too difficult to figure out from the man pages? You want to do cool Internet programming‚ but you don ’t have time to wade through a gob of structs trying to figure out if you have to call bind() before you connect()‚ etc.‚ etc. Well‚ guess what! I ’ve already done this nasty business
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Networks: Need for Networking - Service Description – Connectionless and Connection-Oriented Services – Circuit and Packet Switching – Access Networks and Physical Media – Wireless Links and Characteristics – Queuing Delay and Packet Loss – Internet Protocol stack – OSI Reference Model - Service Models – History of Computer Networking and the Internet. UNIT II Application Layer: Principles of Network Applications – The Web and HTTP – FTP – Electronic Mail – SMTP – Mail Message Formats and MIME
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Standard protocol is not router specific. It also gives some authentication at different layer. HDLC (High-Level Data Link Control) does not support any kind of authentication. It is personalized‚ router-specific protocol. It cannot be used toconnect routers of different vendors.So if traffic analyzer may not recognize Cisco’s HDLC than it might not be compatible with this protocol. 2. The Supervisory frame(S-frame) and Unnumbered (U-frame) frame are the two frames of HDLC Protocol Supervisory
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• Role of the Router • Role of the Switch • ARP (Address Resolution Protocol) – MAC address – Layer 2 (OSI Model)address – the mapping of a Layer 3 to Layer 2 address • The cables: UTP‚ Serial • The Interface: FastEthernet‚ Serial – What is an interface? – What is its purpose? – How is it identified? – DTE or DCE? 4 An IP Network - Overview • How do IP packets travel between networks? – The Routing Table – Building a Routing table using Static Routes 5 Building a Network - Packet Tracer
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GLOBAL WARMING : WHAT LIES AHEAD GLOBAL WARMING Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. In recent usage‚ especially in the context of environment policy‚ it is more generally known as "global warming"‚ which occurs due to increasing levels of greenhouse gases in the atmosphere. Most of the observed temperature increase has been caused by increasing concentrations of greenhouse gases‚ which result
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Topic 1 Level 1 Internal components of a computer. a. CPU b. GPU c. Motherboard d. Power supply e. RAM Level 2 explain in simple terms the I/O process a. You input information perhaps via a keyboard or mouse to the computer and you receive output via a monitor or printer or some such device Level 3 You type “abcd” but the locally attached printer prints garbled text. How do you go about resolving this issue? a. Check cables (physical layer first) b. Update print drivers (didn’t solve)
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networks. Network Security Protocols encompasses the basis for safe & reliable data transfer. These security devices should be able to provide accountability‚ access control‚ confidentiality‚ integrity‚ while all the time being cost effective. This provides us with different security protocols related to the transfer of data through a network. With a prevalent system of networks the frontier for world data communication‚ it is absolutely critical to be able to have these protocols provide the most secure
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present a few aspects regarding the Kyoto protocol. The Kyoto protocol is a protocol to the United Nations Framework Convention on Climate Change (UNFCCC or FCCC)‚ aimed at fighting global warming. The FCCC is an international environmental treaty with the goal of achieving “stabilization of greenhouse gas concentration in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system.” The protocol was initially adopted on 11 December 1997
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1. The process of obtaining an IP address for a computer name (for example‚ “Computer A”) is called __________. Name Resolution 2. The routing service included with Windows Server 2008 is better suited for ___________. Smaller network 3. Network Access Protection was introduced with which operating system? Windows Server 2008 4. Which feature is an integral part of IPv6‚ where as it was an optional feature under IPv4? IPSec 5. IPv4 addresses are commonly represented by using what type of notation
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NT1210 Labs 3.1 to 3.4 3.1.1 What would happen if wireless devices were not governed by the Wi-Fi Alliance and each vendor had its own standards and protocols? What impact would this have on your personal life or business communications? Personal information and business will slow down due to each vendor having its own standards/protocols. It will also be more vulnerable to attacks and make accessing more difficult. 3.1.2 Give another example of a model that is used to visualize something
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