Troubleshooting 3. A user reports that they cannot download a file from the internet. Using the OSI model‚ what are some of the questions a NSA may ask to troubleshoot this problem? a. Is the network cable plugged in? b. Does the PC in question have a valid IP address?
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in an IPv4 IP address? In an IPv6 IP address? 32 bits‚ 128 bits 3. How does a client application identify a server application on another computer on the network? By a port number 4. What are IP addresses called that begin with 10‚ 172.16‚ or 192.168? Private IP addresses 5. In what class is the IP address 185.75.255.10? Class B 6. In what class is the IP address 193.200.30.5? Class C 7. Describe the difference between public and private IP addresses. If a network is using private IP addresses‚ how
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OPC Protocol DI Objects PLC family DAServers Manufacturer I/O Server Wonderware Device Connectivity Server Allen Bradley Allen Bradley ABTCP DAServer ABDH+ Requires the use of AB 1784-KT and KTx card x x x x x x Connects via Ethernet TCP IP with Winsock interface Allen-Bradley PLC-5 and SLC 500 PLCs‚ which are connected to the Data Highway Plus Bridge Module (DH485‚ DH‚ or DF1). The DAServer does not require the Rockwell Software RSLinx™ OEM package. Requries AllenBradley 1784-KT or
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IT2301 ELECTRONIC COMMERCE UNIT – 1 INTRODUCTION Traditional Commerce and E-Commerce: Traditional Commerce: Traditional commerce perhaps started before recorded history when our ancestors first decided to specialise their everyday activities. Instead of each family unit having to grow crops‚ search for food‚ and make tools‚ families developed skills in one of these areas and traded some of their production for other needs. It started with bartering‚ which eventually gave
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Format: 20-30 MC; 6pages of short answers Review – labs • • Travel over the internet; TCP/UDP is from end to end‚ IP is in the middle‚ between hops o Write email – this is data o Data is sent to the transport layer and is SEGMENTED‚ adds s/d PORT # and sequence number o Network layer turns these into packets with s/d ip address o Data link layer turns these into frames with s/d mac address for default gateway o Frames go to switch and switch checks source mac and learns it if it
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Syllabus College of Information Systems & Technology IT/240 Version 4 Intro to LAN Technologies Copyright © 2012‚ 2009‚ 2007 by University of Phoenix. All rights reserved. Course Description This foundational course covers local area network topics including rationale for networking‚ the open systems interconnection (OSI) model‚ common network topologies and architecture‚ client/server concepts‚ basic hardware devices and usage‚ and basic networking security concepts. Policies Faculty
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-runlevel 0- shuts down the system‚ runlevel 1- brings the system to single-user/resue mode‚ runlevel 2‚3‚4- brings the system to multiuser textual mode‚ runlevel 5- brings the system to multiuser graphical mode‚ runlevel 6- reboots the system. by default Fedora uses 5‚ Telinit utility allows a user working with root privileges to bring the system down‚ reboot‚ or change between runlevels. who –r displays current runlevel -any directories you do not create file systems for automatically become part
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own Transmission Control Protocol‚ or TCP‚ takes the packet from the application layer and places it in a TCP packet along with whatever additional data the TCP segment requires‚ and passes it along to the Network Layer. The Network Layer‚ as with the previous layers‚ has its own protocols. In this case we’ll use the Internet Protocol‚ or IP. IP determines the next destination as the message is routed through the network‚ places the TCP packet inside an IP packet along with any additional required
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following factors: The type of IP address that you want to use: IPv4 or IPv6 The number of potential systems on your network The number of systems that are multihued or routers‚ which require multiple network interface cards (NICs) with their own individual IP addresses Whether to use private addresses on your network Whether to have a DHCP server that manages pools of IPv4 addresses The IP address management (IPAM) solutions streamline the management of the entire IP address lifecycle. The patented
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using gcc. Note that every code snippet was not individually tested. Contents: What is a socket? Two Types of Internet Sockets Low level Nonsense and Network Theory structs--Know these‚ or aliens will destroy the planet! Convert the Natives! IP Addresses and How to Deal With Them socket()--Get the File Descriptor! bind()--What port am I on? connect()--Hey‚ you! listen()--Will somebody please call me? 1 of 26 12.03.99 01:21 Beej ’s Guide to Network Programming file:///C|/Eigene Dateien/Manualz/not
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