Write out common methods for network testing? List a few common network operation commands and expla

Enter in Start Running.

cmd, which enters the DOS session box after confirmation; Windows 98 system, you can enter the command in the "Start Run" to enter the DOS session box, or you can directly switch to DOS mode.

1. Check the IP address of your computer. , DNS address, and physical address (MAC address) of the network card Windows 98: WinIPCFG Windows 2000 XP: ipconfig all

2. Detect the physical connectivity of the line ping command is often used to test the connectivity of the network 3. The address resolution protocol ARP

4. netstat command: verify the network connection of each port.

The Complete Collection of cmd Commands (Part 1).

Winver --- check the Windows version to open the Windows Management Architecture (WMI).

Answer] :d This question tests the basic knowledge of online testing.

When testing a new network, there is no need to test the link transmission rate, end-to-end test, and all subnets and VLANs. For end-to-end link testing, throughput testing is one of the most important test items.

Answer]: A network system test is mainly to test whether the network provides a stable and efficient network platform for the application system, if the network system is not stable enough, the network application can not be quickly stable. For the system test of conventional Ethernet, the main simple touch should include basic functional tests such as system connectivity, link transmission rate, throughput rate, transmission delay and link layer health test.

All networked terminals must be fully connected according to the requirements of use. Connectivity test methods generally include: connecting the test tool to the port of the selected access layer device, i.e., the test point; Use test tools to test the network connectivity of key servers, core layers, and aggregation layer key network devices (such as switches and routers) at 1 second intervals.

The test path should cover all subnets and VLANs. Move the test tool to a different location test point and repeat the steps until all test sampling devices are traversed. The sampling rules shall be conducted in a proportion of not less than 10% of the total number of devices in the access layer, and if the sampling is less than 10 devices, all tests shall be conducted; Select at least one port in each sampled device, i.e. the test point should be able to cover different subnets and VLANs.

The qualification criteria are divided into two types: individual qualification criteria and comprehensive qualification criteria. Single qualification criterion: When the ping test connectivity from the test point to the key node reaches 100%, the single-point connectivity is judged to meet the requirements.

Comprehensive qualification criterion: when the connectivity of all test points reaches 100%, it is judged that the connectivity of the air-simplified system meets the requirements; Otherwise, the connectivity of the negotiation system does not meet the requirements.