哈密“绣郎”：用灵巧双手“绣出”美好生活

百度 这就是为什么屠呦呦要在发现青蒿素几十年后才得奖，因为要等到青蒿素大规模使用、成为世界首选的抗疟疾特效药之后。

This lesson covers Internet protocols.

Objectives and Skills

Objectives and skills for the Internet protocols portion of Linux+ certification include:

• Fundamentals of Internet protocols
  • Demonstrate an understanding of network masks and CIDR notation
  • Knowledge of the differences between private and public “dotted quad” IP addresses
  • Knowledge about common TCP and UDP ports (20, 21, 22, 23, 25, 53, 80, 110, 123, 139, 143, 161, 162, 389, 443, 465, 514, 636, 993, 995)
  • Knowledge about the differences and major features of UDP, TCP and ICMP
  • Knowledge of the major differences between IPv4 and IPv6
  • Knowledge of the basic features of IPv6
  • The following is a partial list of the used files, terms and utilities:
    • /etc/services
    • IPv4, IPv6
    • Subnetting
    • TCP, UDP, ICMP

References

Linux Administration/Networking

Configuration →