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【判断题】
PLC是一种工业专用控制微机。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What is a benefit of Internet protocol (IP) telephony?（）
A.
Synchronizes password exchanges for call setup
B.
Eliminates the need for physical cabling in a TCP/IP network
C.
Enables two-way voice transmission over a packet-switched TCP/IP network
D.
Creates an encrypted tunnel for voice through a Transmission Control Protocol (TCP)/IP network
【简答题】简述Spark的特点。
【简答题】IP 是Internet Protocol （网间网互联协议）的简写。
【单选题】What is a benefit of Internet protocol (IP) telephony?（）
A.
Synchronizes password exchanges for call setup
B.
Creates an encrypted tunnel for voice through a Transmission Control Protocol (TCP)/IP network
C.
Enables two-way voice transmission over a packet-switched TCP/IP network
D.
Eliminates the need for physical cabling in a TCP/IP network
【简答题】Internet Protocol(IP)
【单选题】Which protocol automates all of the following functions for hosts on a network: IP configuration, IP addresses, subnet masks, default gateways, and DNS server information?
A.
CDP
B.
SNMP
C.
DHCP
D.
ARP
E.
DNS
F.
None of the above
【简答题】简述Spark的特点。
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