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Something About Cables

In any wired LAN environment it becomes necessary to take utmost care while selecting cables for the network setup. Engineers and administrators may select cable types according to the requirements of the LAN setup, budget involved in the infrastructure installation and the scalability of the network. Since cables play important role in any wired network infrastructure it becomes important for the administrators and engineers to select appropriate cable types so as to meet and fulfill the requirements of the organizations. Any one among the three available types of cables can be used in order to establish a complete wired network infrastructure. The cable types that can be used are: Coaxial Cables  – These cables are no longer used in any network infrastructure today as they are obsolete. In earlier days these cables were used and they were available in two categories, namely 10Base2 and 10Base5. In these naming conventions, 10 represented the speed in Mbps or ...
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IPv4 and IPv6 Addressing

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As the Internet is a network of networks, addressing, is particularly important. This section provides an initial overview of the addressing problems through the first generation IP protocol IPv4 and IPv6 new generation.Internet machines have an IPv4 address represented on a 32-bit integer. The address consists of two parts: a network identifier and an identifier of the machine to the network. There are four classes of addresses, each for encoding a different number of networks and machines: • Class A: 128 networks and 16,777,216 hosts (7 bits for networks and 24 for hosts); • Class B: 16,384 networks and 65,535 hosts (14 bit and 16 for networks for hosts); • Class C: 2,097,152 networks and 256 hosts (21 bits for networks and 8 for hosts); • Class D: group addresses (28 bits for the hosts belonging to the same group). These addresses are detailed in Figure.   The IP addresses were defined to be processed quickly. Rou...
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HOW TO REFILL LASER TONER CARTRIDGE

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HP 12A cartridge is the most successful toner cartridge for hp laserset printers which can fit different models like HP LaserJet 1012, 1018, 1020, 1020+, 1022, 3015, 3020, 3030 printer series and 3050, 3052, 3055 AIO, M1319F MFP, printer series and also Canon 2900b. And I will show how to refill the cartridge with 100% successful way with photo demonstration. Material Required: 1)screw driver.Stanley 69-189 Ratcheting Multi-Bit Screwdriver 2)Tweezer.Compact Straight Extra Fine Point Slim Tweezer 3)Toner Powder.HP Toner Refill 12A 1018 1020 1022 3015 3050 3052 3055 for laserjet cartridge 4)Drum Gino Repairing Printer OPC Drum Part for HP 1010 1012 1015 if required. 5)Brush.Silver Brush 9090S-034 Faux Finish Short Handle Blending Mop, 3/4-Inch 6)Cloth Soft-Tek Micro Fiber Cleaning Cloth for cleaning. Step 1:Unscrew the both end of the hp 12 toner cartridge. Total you will find 4 screws. Step 2:Open the drum side cover by just pulling it from drum gear side. Step 3: Get out the drum by s...
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