Shulou(Shulou.com)06/03 Report--

Notebook at the same time connected to the wired wireless network, there is a priority, can be set.

TTL: lifetime of the packet, TTL minus 1 for each hop of the packet

Each hop is a translation of a network address, usually a router

Static route: is in the fixed routing table set up in the router. Suitable for small networks. Priority is higher than dynamic routing.

Dynamic routing: a process in which routers communicate with each other, transmit routing information, and update the routing table with the received information. It can adapt to the change of network structure in real time. Suitable for more than 50 sets, large-scale network topology complex environment.

Wang Yuehui wrote on 2017-09-27

CAT category 5 line

568A line sequence: green-white, green, orange-white, blue-white, orange-white, brown-white

568B line sequence: orange white, orange, green white, blue, blue white, green, brown white, brown

Cross lines are also called reverse lines: 568A and 568B are used between the same network devices.

Direct connection is also called main line or standard line: 568B and 568B are used between different network devices.

The switch can intelligently identify the wire sequence, so it is possible to use both cross-line and direct-connected lines.

Network cable port: RJ-45

Video transmission port:

VGA (Video Graphics Array) video graphics array is a computer display standard using analog signals proposed by IBM in 1987. Hot swappable is supported.

DVI (Digital Visual Interface) digital video interface to transmit digital signals. Suitable for high-definition and 3D scenes, high resolution, generally does not support hot swapping. DVI-A (Analog) only transmits analog signals, DVI-I (Intergrated) transmits analog signals and digital signals, DVI-D (Digital) has three types, and there are VGA--DVI adapters.

HDMI (High Definition Multimedia Interface), high definition multimedia interface, integrated output of video and audio signals. There is no analog signal and digital signal conversion. There is a mini HDMI port.

Common printer brands: Canon, Hewlett-Packard HP, Epson Epson Fuji Xerox Fuji Xerox, Lenovo, Brothers Brother Common PC brands differences: Acer Acer, ASUS Asustek

Wang Yuehui wrote on 2017-09-23

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