Table of contents
The realization of TCP reliable transmission depends on the following mechanism
overview
TCP/IP
POP3: Receive mail
SMTP: Simple Mail Transfer Protocol
DNS: There is a one-to-one correspondence between domain names and IP addresses
DHCP: mainly to quickly and automatically assign IP addresses to the network
TFTP is Trivial File Transfer Protocol
Telnet protocol, the standard protocol and main method of remote login service
ICMP: Most widely used is the ping application
IGMP: Internet Group Management Protocol, a protocol responsible for IPV4 multicast member management
ARP: IP address --- "mac address
RARP: mac address---"IP address
SNMP stands for Simple Network Management Protocol . It is an Internet standard protocol for dealing with devices on IP networks. Devices that typically provide SNMP include routers, switches, servers, workstations, printers, modem racks, etc.
The realization of TCP reliable transmission depends on the following mechanism
DNS
DNS: There is a one-to-one correspondence between domain names and IP addresses
ps: The query to the root domain name server generally does not use "recursive query", which will increase its burden.
Practice questions:
DHCP
DHCP: mainly to quickly and automatically assign IP addresses to the network
Network Planning and Design
Note: product
logical network design
Note: No physical equipment selection is involved at this time
physical network design
ps: Pay attention to tasks and products
Practice questions:
Hierarchical Network Design
PS: The core layer focuses on speed and will not do some checks
Network Redundancy Design
network storage technology
Classification:
Since DAS directly connects the storage device to the server , it is limited in transmission distance, number of connections, transmission rate, etc.
NAS can economically solve the problem of insufficient storage capacity, but it is difficult to obtain satisfactory performance.
