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What kind of global disaster on the Internet will the BGP route leak cause?

What kind of global disaster on the Internet will the BGP route leak cause?

2020-04-29

Routing rules

According to the "longest match" routing rule of the route, 104.20.0.0/21 or 104.20.8.0/21 is definitely better than 104.20.0.0/20, so the traffic on the Internet accessing "104.20.0.0/20" will pass DQE Transit.


What is Anycast technology?

What is Anycast technology?

2020-04-27

The implementation method of Anycast is generally to start the loopback of the same address on the server and implement it by the equivalent routing method. The problem is:

1. What is the need for network elements?

2. Is it simply announced on the routing protocol?

3. Is there a difference between different protocols (ospf, bgp)?

4. What is the impact of route convergence on services?


Is VLAN a Layer 2 technology or a Layer 3 technology?

Is VLAN a Layer 2 technology or a Layer 3 technology?

2020-04-26

The current project always mentions VLAN. No matter whether Party A has this requirement or not, VLAN must be switched at Layer 3. This brings a misunderstanding. Many people mistakenly believe that VLAN is a function only available for Layer 3 switches. I thought VLAN itself should belong to Layer 2 technology, and Layer 3 switching is only used for communication between VLANs. This talent is very shallow, and I also invite big coffee to discuss whether VLAN belongs to Layer 2 technology or Layer 3 technology?

How does network latency occur?

How does network latency occur?

2020-04-23

Network delay refers to the time elapsed since an IP packet is sent from the source host process and reaches the destination host process, in milliseconds.

The IP packet passes from the source host through multiple relay devices, such as switches and routers, and finally reaches the destination. The network delay is composed of the following three:

How to explain the cloud and cloud computing simply?

How to explain the cloud and cloud computing simply?

2020-04-22

I often see the words "cloud" and "cloud computing" on the Internet. I didn't know what these words meant, so I went to Baidu Encyclopedia and found that the more I looked at it, the more confused I was. Here, I would like to ask you to summarize the meaning of these two words in one or two simple and easy-to-understand words (try to explain in easy-to-understand words.

Will IPv6 replace the MAC address?

Will IPv6 replace the MAC address?

2020-04-19

Whether it is an IPv4 or IPv6 address, it is globally unique on the Internet. You can uniquely identify the host by relying on the IP address only. What else is the MAC address?

Does it make sense to fully popularize HTTPS?

Does it make sense to fully popularize HTTPS?

2020-04-18

That's because HTTP was hijacked and tampered with the page, and the TCP checksum was recalculated. The user's computer could not tell whether it was tampered with, and had to receive it passively.

Why should I ask TCP / IP / HTTP for these interviews?

Why should I ask TCP / IP / HTTP for these interviews?

2020-04-17

If both TCP parties send SYN signals at the same time, will one TCP connection or two TCP connections be established?

The interviewer learned from the textbook that TCP is a three-way handshake. Since both parties send a SYN signal at the same time, there will be two three-way message handshake and eventually two TCP connections will be generated. Let's look at an example first.

How to carry out network attacks on the intranet?

How to carry out network attacks on the intranet?

2020-04-16

1. Regarding the IP Spoofing attack, if the source IP of the packet is constructed by itself, how should this packet be sent out of the gateway? Because the source IP may not be in the gateway subnet.

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