Springer Link主页面出现的protocols，是什么意思？

显示根目录下etc目录内protocols文件的前30行

显示根目录下etc目录内protocols文件的前10行[root@RHEL7-1 etc]#

Bridges can interconnect two networks using different data link layer protocols, different transmission media and different transmission rates.

Which protocols would you want to use for secure VPN ？（） A: EAP B: Chap C: Ms-Chap D: PPTP E: PAP F: SPAP

下面哪条命令能够显示路由器接口IP地址？ A: show running-config B: show startup-config C: show interfaces D: show protocols

下面哪个命令可以查看RIPng数据库信息（） A: Ashow ipv6 protocols B: Bshow ipv6 interface C: Cshow ipv6 rip catabase

During the information flow of the smart house, what protocols can the Arduino main control module and the cloud platform communicate with? A: IIC B: LoRa C: WiFi D: NB-IoT

For data transmission to be successful,sending and receiving devices must follow a set of communication rules for the exchange of information. These rules are known as ______. A: E-mail B: Internet C: network D: protocols

Which three factors have the biggest influence on OSPF scalability？（） A: Flooding paths and redundancy B: Amount of routing information in the OSPF area or routing domain C: Number of routers with Cisco Express Forwarding enabled D: Number of neighbor adjacencies E: Other routing protocols in use F: OSPF timer reconstruction negotiation G: Redistribution with BGP neighbors H: Redistribution with other IGP routing protocols， such as RIP or EIGRP