Others

This article will introduce the differences between exports and module. exports in Node. js. For more information, see this article. In Node. js, what is the difference between exports and module. exports?You must be familiar with the exports object

Some traceroute & tracert usage traceroute is a routing tool used to track data packets arriving at the network host. traceroute is a gateway tool used to send packets between the host and the target host. The principle of traceroute is to try to

RIP Protocol troubleshooting 01. What protocol does RIP transmit information and what mechanism is used to calculate the optimal route? RIP updates route information based on UDP port 520 using the BELLMEN-FORD algorithm. The basic principle is to

ICMPv6 and ICMPv6 include error messages and notification messages. Error message: 1. Inaccessible destination; 2. Too large data packet; 3. Timeout; 4. parameter error. Notification Message: 1. Requests are sent; 2. Echo response; 1. multicast

Configure the KEYip OSPF authentication-key ciscosetp2 ospf interface to enable authentication under the ospf process of ospf virtual link authentication area 1 area 0 authenticationsetp3 enable authentication area 1 virtual-link 3.3.3.3

Frame Relay speed limit (to prevent excessive broadcast packets) configure the frame-relay network interface to prevent broadcast flooding by speed limit: maximum packet transmit rate: 240 packet per second; maximum byte transmission ratte: 260 k

Network Management and experiment (the route command and ip command are implemented respectively) A network-related file [plain] [root @ serv01 data] # vim/etc/sysconfig/network-scripts/ifcfg-eth0 [root @ serv01 data] # cd/etc/sysconfig/network-

Data communication and network note-congestion control in TCP 1. The size of the congestion window sender window depends not only on the receiver, but also on network congestion. The sender has two types of information: the size of the window

UDP Protocol Introduction UDP transmission is very similar to IP transmission. You can regard UDP as an interface that exposes the IP protocol to the transport layer. UDP also transmits data packets in the form of "Best Effort", so UDP is also

TCP fragment loss analysis the checksum receiver of the TCP header can check whether the TCP fragment has an error by verifying the checksum area in the TCP fragment header .. The checksum algorithm of TCP segments is similar to that of TCP segments.

Timeout resend analysis when the sender sends a TCP segment, the timer starts and waits for the ACK Reply of the TCP segment. If the receiver correctly receives the ordered fragments, the receiver uses the ACK fragments to reply to the sender. After

Network Address-IP protocol specifies the network address protocol, which is called IP protocol. The address defined by it is called an IP address. Currently, IPv4 is widely used in the fourth version of the IP protocol. This version requires that

Broadcast knowledge Simple Q & A first, how does one network card know the MAC address of another network card? The answer is: there is an ARP protocol that can solve this problem. This will be introduced later. Here, you only need to know that the

ARP protocol usageBecause IP packets are sent in Ethernet packets, we must know two addresses at the same time, one is the MAC address of the other and the other is the IP address of the other. Generally, the IP address of the other party is known,

Use the Ping command to verify that TCP/IP works properly. To do this, enter the following command at the command prompt to Ping the loop address (127.0.0.1): ping 127.0.0.1 you should receive a response similar to the following: Pinging 127.0.0.1

TCP transmission connection establishment and release detailsTCP transmission connection is a connection-oriented transport layer protocol. Therefore, a transmission connection must be established between the two parties before any data is sent to

TCP/IP protocol and subnet division methodI. questions to consider when dividing subnets: 1. number of subnets to be divided 2. number of hosts per subnet 2. to determine the subnet mask, follow these steps: 1. determine the number of subnets,

TCP/IP note 3. transport Layer (4) -- TCP Link Management and TCP state machine 1. establish A three-way handshake (1) tcp of a sends A connection request packet segment to B. Set the synchronous bit SYN in the header to 1, and select the serial

TCP/IP Note 3. Transport Layer (2) -- TCP traffic control and congestion control can be said to be integrated. Traffic control is implemented through a sliding window. Congestion Avoidance mainly includes the following two content: (1) slow start,

CCNA registration-basic network knowledge-1-2 by understanding the Internet architecture, we can help you understand the network! The Internet architecture solves four basic features: Fault Tolerance, scalability, service quality (Qos), and security.