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Does the DNS root server store all the domain in the world?

Does the DNS root server store all the domain in the world?

2020-03-12

If I apply for a domain name for my personal website, have I taken up the resources of the DNS root server? If not, whose resources do I have?

Why can't I access the Internet with a fixed IP?

Why can't I access the Internet with a fixed IP?

2020-03-11

The network card is set to automatically obtain an IP to access the Internet, but it cannot be accessed by changing to a fixed IP. The internal network of our unit must be changed to obtain IP automatically. I set the network card to obtain IP automatically, and I can browse the internal

What is encrypted by HTTPS?

What is encrypted by HTTPS?

2020-03-09

They all say that HTTPS is secure. I read a lot of explanations,but I don’t know what is encrypted by HTTPS.  Can someone explain in easy terms? What I don't understand is:

Top 10 most common problems for network administrators

Top 10 most common problems for network administrators

2020-03-07

1.The port cannot connect to the network

Phenomenon: The computer, phone, wireless access point, or printer is plugged into a network jack on the wall, and the network connection is not working properly. Neither the connection indicator of the switch port nor the connection indicator of the network card is on.

The ten features of SD-WAN

The ten features of SD-WAN

2020-03-06

SD-WAN is a very popular new technology in the current network. Many distributed organizations have adopted or are about to adopt SD-WAN solutions.

Required to become a CCIE

Required to become a CCIE

2020-03-05

What is the necessary technology of CCIE?  That must be MPLS technology.  Today, let's briefly discuss MPLS. Before learning MPLS VPN, many students will ask what exactly is MPLS?  Why do we need MPLS?

Understanding the protocols of Cisco CGMP and RGMP

Understanding the protocols of Cisco CGMP and RGMP

2020-03-04

CGMP is used to limit multicast traffic on a Layer 2 network. Because the switch cannot view the Layer 3 data packets, it cannot distinguish IGMP packets. With CGMP, the router tells the switch the interface of the multicast group user. Only the router can generate CGMP packets, and the switch just listens for CGMP packets.

What is Mesh technology?

What is Mesh technology?

2020-03-04

Since its birth in the 1960s, the development of network technology has been extremely rapid. The star structure, ring structure, bus structure, distributed structure, and tree structure of traditional LANs have played a role in various fields, serving billions of people

3 minutes to get the vlan and vxlan

3 minutes to get the vlan and vxlan

2020-03-02

Traditional VLAN technology cannot support the strict requirements of cloud providers because it can only support a maximum of 4096 VLANs. This technology can effectively overcome the limitation of extension brought by VLAN.

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